PRESS RELEASE: Time for Another Look at the Newest Version of BioCorr® Biobased Rust Preventative!

Traditional rust preventatives present two major challenges. One is the issue of environmental and worker hazards from using hazardous mineral oils and flammable solvents. The other is the lack of cleanliness and workability involved in applying and removing greasy rust preventatives. Ready to meet this need is BioCorr® HP, the newest generation of Cortec® Corporation’s game-changing biobased, dry-film rust preventative! First released in 2021, BioCorr® HP is worth taking another look at for advantages that go beyond environmental benefits.

Streamline the Rust Preventative Process

BioCorr® HP is a water-based, biobased rust preventative designed to preserve metals in storage and during transportation. Unlike rust preventative oils, this product leaves a dry, virtually undetectable film on the metal surface. The film displaces water and oils and also actively inhibits corrosion. BioCorr® HP helps promote a cleaner workplace and prevent material waste. It also streamlines processes because it does not require removal by the end user in most cases. This ready-to-use formulation can protect multi-metals for up to two years of indoor storage (or during shipment when combined with VpCI® packaging materials).

One Dry Film, Many Possibilities

Because BioCorr® HP is so thin and undetectable, it can also be used in areas where there are tight tolerances. One great example is the protection of threaded mating surfaces on equipment where temporary rust prevention is needed, but where a thick greasy substance is not practical. BioCorr® HP is able to provide this interim protection without being noticed or requiring cleaning later. Since BioCorr® HP does not interfere with automatic transmission fluids, it can be used to protect transmissions as they await installation or assembly. There are countless other applications where it can be used, as well:

  • Automotive components
  • Pipes, flanges, and gears
  • Sheets, coils, and castings
  • Valve stems
  • Equipment internals
  • Various other manufactured components

Avoid the Hassle of Greasy Rust Preventatives

Whatever the application happens to be, BioCorr® HP is an excellent way to provide interim corrosion protection in an unobtrusive way without the mess and hassle of greasy rust preventatives. Contact Cortec® to discuss your application in detail:

Keywords: biobased rust preventative, rust preventatives, preserve metals, inhibit corrosion, Cortec, BioCorr, alternative to greasy rust preventatives, corrosion protection, USDA certified biobased product, alternative to petroleum-based products

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PRESS RELEASE: VpCI®-395 Primer: A Little Extra Effort Goes a Long Way to Greater Anticorrosion Coating Durability!

Each coating job has different priorities-whether convenience, corrosion protection, outdoor durability, or chemical resistance. In the first case, single-component, one-coat, direct-to-metal (DTM) coatings systems are great for applications that need quick protection without a lot of time to wait for primers and multiple coats to dry and cure. However, when time does allow, it is best to put in a little extra effort—using 2K products, primers, and multiple coats-in order to achieve the best coating performance possible. That is where VpCI®-395 comes in as Cortec’s first-class, 2K metal primer for corrosion protection!

Why Use VpCI®-395?
There are many great reasons to use VpCI®-395 Water-Based Epoxy Primer. For starters, VpCI®-395 is Cortec’s most durable anticorrosion primer. It not only promotes good surface adhesion between the metal and topcoats, but it also has greater strength as a 2K (two-component) primer. The extra effort that goes into mixing two parts together at the jobsite translates into greater durability because it allows crosslinking, i.e., greater chemical bonding, between the active ingredients in the primer. VpCI®-395 shows excellent performance in salt spray and humidity testing. In addition to promoting a stronger coatings system that inhibits corrosion, VpCI®-395 has the worker and environmental advantage of being water-based. Water-based coatings typically make cleanup easier and are often associated with lower VOCs (0.2 lbs/gal [24 g/L] in the case of VpCI®-395). Thus, VpCI®-395 reduces worker exposure to solvents both in the painting and cleanup process.

Where to Use VpCI®-395
VpCI®-395 is excellent for use in immersion applications and chemical plants because of the toughness of its epoxy. It can be applied as a primer inside tanks and on handrails and metal walkways. Indoors, VpCI®-395 can also be used as a topcoat (since UV resistance is not needed) and tinted to match the plant’s color scheme. Outdoors, VpCI®-395 can be combined with EcoShield® VpCI®-386 to create one of Cortec’s best water-based anticorrosion coatings system. It can also be used with a 2K urethane one-coat system such as VpCI®-384 for even greater durability if a water-based topcoat is not needed.

Going the Extra Mile for Coatings System Success
Often, the most difficult part of a job is the prep-work-whether surface prep, additional mixing, or extra effort to apply a primer. However, these tasks can offer invaluable payoffs in terms of adhesion and overall coating durability. In the case of VpCI®-395, the extra mixing of two components rewards users with a stronger primer to help maximize the success and corrosion protection of the entire coatings system. Next time your coating project can afford to go the extra mile for greater coating durability, be sure to contact Cortec® about VpCI®-395 Water-Based Epoxy Primer for a great start to your coatings system:

Keywords: anticorrosion coating, coating durability, corrosion protection, DTM coatings, water-based epoxy primer, anticorrosion primer, crosslinking coatings, 2K metal primer, Cortec, good surface adhesion

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PRESS RELEASE: VpCI®-391: Inconspicuous Removable Coating Offers Convenient Corrosion Protection

VpCI-391 Tractor with front end loader scored feed for cows. View of the side on the background of bales with silage. Necessary equipment for a dairy farm.

Corrosion is an irreversible process that costs industries time and money to deal with the effects. Corrosion prevention is therefore in the best interest of manufacturers and asset owners responsible for covering losses from deteriorating assets. While protective VCI packaging solves many metal shipping and storage needs, it is not always the optimal choice for certain metal shapes or storage/transit settings. When this is the case, Cortec’s VpCI®-391 is an excellent removable coating to consider for temporary or even long-term corrosion protection.

Unnoticeable Dry Film Rust Preventative Coating

VpCI®-391 is a fast-drying water-based temporary coating that dries to a thin, clear, virtually unnoticeable non-tacky film. It is perfect for protecting bare metal surfaces from corrosion in transit or temporary storage but can also be applied directly over painted surfaces. VpCI®-391 provides protection indoors and outdoors and is easy to remove with an alkaline cleaner if desired. These features have made it a popular temporary rust preventative coating that displaces traditional greasy, oily rust preventatives with an unnoticeable temporary protective coating that is drastically more convenient.

Clean, Convenient Corrosion Protection

There are many advantages to using VpCI®-391. In addition to its corrosion protection, the dry, non-tacky surface finish stays much cleaner than traditional oily/greasy rust preventatives that tend to collect insects, dust, and other contaminants on their sticky surfaces. It also weathers much better in outdoor applications. Furthermore, testing has found that VpCI®-391 does not negatively impact weld geometry or mechanical properties of the weld, allowing welders to easily keep surfaces corrosion-free prior to welding without extensive surface-prep hassle.

When and Where to Use VpCI®-391

The possibilities for using VpCI®-391 are endless. Examples include the following:

  • Heavy Equipment
  • Machinery
  • Vehicles
  • Piping
  • Structural Steel

Transit is one period in which VpCI®-391 is beneficial for safeguarding brand-new metal components—whether fire trucks, valves, or front-end loaders—from unpredictable exposure to harsh weather conditions on land and sea. It can be sprayed over unpainted bolts and metal tubes as well as metal wheel rims or entire painted vehicles. Since VpCI®-391 is relatively unnoticeable, distributors often leave it on new equipment until resale.

VpCI®-391 is also great for storage and layup. For example, VpCI®-391 can be applied right over painted railings and equipment on offshore platforms for extra corrosion protection during rig-stacking. Pipeline segments stored in laydown yards may be coated with VpCI®-391 to protect weld ends from rusting. At the time of assembly or installation, the welder can simply clean off the coating or weld directly over it, instead of spending extra time grinding away opportunistic rust that could otherwise set in.

A third purpose for VpCI®-391 is preventative maintenance. For instance, one company that uses front-end loaders to move high volumes of deicing salts or fertilizers has adopted VpCI®-391 as part of their annual preventative maintenance routine. By applying VpCI®-391 over the vehicles once a year during the slow season, the equipment lasts longer and does not look 10 years old after just one year of use.

Effective, Easy, and Inconspicuous

Anyone who needs a dry temporary corrosion protection coating should consider VpCI®-391 as an easy, effective, versatile, and inconspicuous option. It looks good and performs well even in outdoor environments, allowing users the advantage of unobtrusive corrosion protection during the transit, storage, or maintenance phase. Contact Cortec® today to learn more about using VpCI®-391:

Keywords: rust preventative coating, VCI packaging, corrosion prevention, metal shipping and storage needs, removable coating, keep weld surfaces corrosion free, preventative maintenance, Cortec, Cortec Coatings, transit coatings

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PRESS RELEASE: VpCI®-373 Wash Primer: The Path to Good Coatings Adhesion on Galvanized Steel and Aluminum

Good adhesion is critical to the success of a coatings system, especially when painting metal to protect it from corrosion. Although many of Cortec’s Micro-Corrosion Inhibiting Coatings™ are designed to be applied direct to metal (DTM coatings), a primer is often recommended for improved adhesion. Extra care must be taken for galvanized steel, aluminum, and other metals where adhesion is more difficult. Cortec’s VpCI®-373 serves this purpose as an excellent wash primer for creating a strong bond between metal surfaces and the paint that protects them.

Common Methods for Improving Coating Adhesion
Common methods for improving adhesion on galvanized steel and aluminum include the following:

• Chromate pretreatment/conversion coatings for unpainted aluminum
• Lead and zinc chromate primers for galvanized steel
• Acid etching on galvanized steel
• Applying a wash primer

The first three options have obvious downfalls due to the use of heavy metals and harsh acids that could be harmful for workers. The fourth is an excellent way to keep paint application simple. Wash primers typically are very thin yet promote good adhesion between the metal surface and the chosen topcoat. This can help the protective coating last longer instead of failing prematurely. Without good adhesion, the coating is destined to peel or flake early, giving corrosives free access to the metal surfaces.

VpCI®-373 Wash Primer
VpCI®-373 is a water-based wash primer that creates a good bond on metal surfaces such as galvanized steel or aluminum where adhesion is difficult. VpCI®-373 can be applied at an extremely thin DFT (dry film thickness) of 0.5-1.0 mils (12.5-25 µm) and top-coated with a wide range of water-based or solvent-based Cortec® MicroCorrosion Inhibiting Coatings™ for corrosion protection. It creates a strong bond between the metal and its protective coating to enhance durability and longevity. It can replace chromate treatments and conversion coatings and is an excellent alternative to acid etching in terms of both safety and convenience.

Coating Galvanized Roofing Sheets
VpCI®-373 was used to answer the adhesion question when painting a galvanized roof over a liquid nitrogen loading dock at an industrial site in the Philippines. Lead and zinc chromate based primers had not been enough to avoid adhesion problems, and etching of the galvanized coating with phosphoric acid was expected to lead to coatings failure within a year. This time, the customer chose to clean the new roofing material and apply VpCI®– 373 as a primer, followed by a topcoat of VpCI®-386. VpCI®-373 worked better than standard red lead or zinc chromate primers and was found to fully adhere to galvanized iron roofing sheets.

Good Adhesion or Failed Protection
Corrosion inhibitor coatings lose their value as soon as they begin to peel off the metal they are designed to protect. When special alloys such as galvanized steel or aluminum make adhesion more difficult than normal, VpCI®-373 steps in to provide a proper bond between the metal and the chosen paint, uniting them in a powerful anticorrosion coatings system to make protection more effective. Contact Cortec® to learn more about VpCI®-373 and the means of achieving good coating adhesion:

Keywords: wash primer, good coatings adhesion, painting metal, corrosion, corrosion inhibiting coatings, Cortec, direct to metal coatings, corrosion protection, improving coating adhesion, coating galvanized roofing sheets

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How to Avoid Mud Cracking When Applying Anticorrosion Coatings

No one wants to apply a paint or anticorrosion coating only to come back later and find that it has dried to look like cracked mud. Not only does the texture look bad, but it also leaves behind cracks that go down to the metal surface, making it more susceptible to corrosion. While the problem of mud cracking can only be resolved by removing and reapplying the coating, it is very easy to prevent by following the guidelines below!

Why Does Mud Cracking Happen?

No matter how good a coating is, mud cracking can occur when the coating is applied too thickly. This is because solvents and water evaporate out of the paint at a certain rate as the coating dries. If the coating is too thick, the surface of the coating dries more quickly than the volatiles underneath can evaporate. Once the surface dries, the volatiles are trapped below, and the only way they can escape is by cracking the dry surface layer to get out. While mud cracking can happen with either solvent-based or water-based coatings, it is more common in water-based coatings because water evaporates more slowly.

How Can You Prevent Mud Cracking?

The solution for preventing mud cracking is extremely simple: follow the manufacturer’s recommendations for coating thickness. The coating manufacturer already knows how the coating will behave and usually provides both a wet film thickness (WFT) and a dry film thickness (DFT) recommendation on the product data sheet. To avoid mud cracking, the coating applicator simply needs to apply the recommended WFT, measuring coating thickness with a WFT gauge to make sure it is correct.

If only the DFT is listed, the painter can figure out the proper WFT based on the recommended DFT and the percent volume of solids. This percentage tells how much of the coating will remain after the volatiles have evaporated. For example, an approximately 50% volume solids coating such as VpCI®-395 will lose about half of its WFT by the time it dries. To get 3 mils (75 µm) DFT, the coating will need to be applied at 6 mils (150 µm) WFT. A coating such as EcoShield® VpCI®-386 with a 31% volume of solids will lose a little more than two-thirds of WFT by the time it dries, meaning 9.6 mils (240 µm) WFT are needed to achieve 3 mils (75 µm) DFT.

What If You Need a Thicker Coating?

Sometimes, it is necessary to apply a thicker coating than normal. If this is the case, the painter can avoid mud cracking by applying the paint in multiple coats and allowing them to dry in between each application.

Remember to Follow Instructions!

Often the best way to achieve success is right in front of us. By following WFT recommendations on a coating’s technical data sheet, painters can avoid unnecessary problems and rework caused by mud cracking. Contact Cortec® for more coating application tips and advice on selecting an anticorrosion coating for your specific application:

Keywords: Cortec, Cortec coatings, anticorrosion coatings, mud cracking, how to avoid mud cracking, measuring coating thickness, water-based coatings, solvent-based coatings, coating application tips, measuring WFT

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PRESS RELEASE: Paint On, Peel Off: Are You Ready to Try VpCI®-372 Peelable Coating for Corrosion Protection?

When choosing a coating, painters typically want one with good adhesion that will not peel quickly. But in some cases, a peelable, strippable coating is exactly what users need for a temporary coating application. Factor in corrosion protection, and manufacturers and maintenance crews have VpCI®-372, a flexible option for removable metal coatings applications.

How VpCI®-372 Works

VpCI®-372 from Cortec® Corporation is a fast-drying, water-based, low VOC acrylic peelable coating that provides corrosion protection in sheltered applications. It can be applied to metal surfaces by spray, brush, or dip. It dries quickly to a clear coat or can be tinted to match some existing color schemes or to provide easy identification of parts. When protection is no longer needed, the user can peel the coating off by hand and discard it as solid waste. This is an exceptional advantage, allowing workers to keep the metal clean, dry, and protected without having to expose themselves to solvents and paint removers.

When to Use VpCI®-372

VpCI®-372 should be used when packaging and other rust preventative coatings are not optimal. The following questions can be helpful in guiding the decision:

  • Does the shape of the metal make packaging difficult?
  • Would packaging removal at the end of preservation interrupt the workflow?
  • Do I need temporary protection rather than a permanent topcoat?
  • Do I want to be able to remove the coating without solvents or cleaners?
  • Will my component be exposed to light physical abrasion (e.g., gravel bouncing off the road)?
  • Do I have metal parts that need to be masked off?

If the answer to any of these questions is “yes,” the application is a good candidate for VpCI®-372 corrosion protection.

Where to Use VpCI®-372

VpCI®-372 peelable coating can be used on equipment in transit, in storage, and sometimes even in operation. For example, instead of applying a greasy rust preventative to new parts being shipped to the assembly plant, a manufacturer can spray the bare metal components with VpCI®-372, which can be peeled off clean and dry when the end user is ready to assemble the parts. Other applications include:

  • Threads, Splines, and Dynamic Profiles – VpCI®-372E is an extra thick version of Cortec’s coating that can be painted on to protect threads, splines, machined areas, or other metal surfaces with dynamic profiles.
  • Winter Equipment Storage –Maintenance crews putting away metal boats or other equipment for the winter can spray metal surfaces with VpCI®-372 and simply peel it off in the spring.
  • Component Masking – Coating applicators in a paint booth can mask off specific areas of a part with VpCI®-372 before spraying the rest of the component with a permanent coat. The VpCI®-372 collects the overspray and can be peeled off to reveal a clean, bare metal surface after the paint application.
  • Heavy Equipment Storage – VpCI®-372 can even be sprayed on dump truck beds, forklift tines, or grader blades of heavy equipment that has to sit in storage for extended timeframes. The equipment will be protected but ready to drive off at a moment’s notice, with or without removing the coating.

Give Peelable Coatings a Try

Peelable coatings work better in some applications than in others. The key is to determine what factors are at play for a particular preservation need. If your application calls for temporary corrosion protection and is not suited to packaging, it may be time to put peelable, strippable coating to work by ordering a sample of VpCI®-372 or VpCI®-372E. Contact Cortec® for advice today:

Keywords: corrosion protection, peelable coating, strippable coating, low VOC coating, transit coating, heavy equipment storage, winter equipment storage, Cortec, Cortec coating, metal coatings

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CorrVerter® MCI® Rust Primer Wins Concrete Contractor 2022 Top Product Award!

Cortec® Corporation is pleased to announce the receipt of a Concrete Contractor 2022 Top Products award for CorrVerter® MCI® Rust Primer! Concrete Contractor uses these awards to recognize innovative industry products that have captured the attention of construction professionals who read their magazine or website. In an announcement listing this year’s award winners, the editor of Concrete Contractor explained, “These solutions were designed to not only help overcome the challenges contractors face on a daily basis but do so with innovative ideas and the ingenuity for them to be successful in the years to come.” Here is how CorrVerter® MCI® Rust Primer does that for the concrete industry.

Making Life Easier for Concrete Repair Contractors

CorrVerter® MCI® Rust Primer makes life easier for contractors performing concrete repairs by providing an alternative to grinding and abrasive blasting of rusty rebar. In order to ensure the soundness of a concrete repair, the contractor must make sure that the exposed reinforcing metal will bond properly to the new concrete patch material. The ICRI 310.1R-2008 “Guideline for Surface Preparation for the Repair of Deteriorated Concrete Resulting from Reinforcing Steel Corrosion” calls for a clean metal surface with no concrete, dirt, or corrosion products that could interfere with adhesion, noting that a layer of tightly bonded light rust is usually not a problem. CorrVerter® MCI® Rust Primer falls within these guidelines and circumvents the need for labor-intensive blasting by passivating the rust with rust converting primer.

How CorrVerter® Works on Rusty Rebar

CorrVerter® MCI® is a single component, fast-drying, water-based primer that converts rusted surfaces to a passive layer. It contains a unique formulation of
chelating agents combined with a high solids waterborne latex with extremely low water vapor permeability. The combination of these materials converts the surface rust into a hydrophobic passive layer with excellent protection against re-rusting. This is perfect for concrete repair applications where rusty steel reinforcement has been exposed, where further corrosion protection is required, and where good surface prep is difficult to achieve. CorrVerter
® is a low-labor alternative to sandblasting and is easy to paint onto corroded rebar after loose rust has been removed with a wire brush. When properly applied, it shows bond strength similar to that of uncoated rebar.

Implementing a High Performance Repair System (HPRS®)

CorrVerter® is an important part of Cortec’s five-step MCI® High Performance Repair System (HPRS®):

  1. Prepare the Substrate
  2. Treat and Clean Rusted Rebars (e.g., apply CorrVerter®)
  3. Apply Repair Materials
  4. Apply Surface Applied Corrosion Inhibitors (SACIs)
  5. Apply Final Coating (optional)

The MCI® HPRS® is designed to help concrete repairs last longer by incorporating Migrating Corrosion Inhibitors that slow the progression of corrosion and the ring-anode/halo effect. CorrVerter® is a low-labor surface prep option that makes it much easier to get the repair off to a good start.

Honored and Eager to Get Effective Solutions into the Hands of Concrete Contractors

Cortec® is eager to get effective, easy-to-use concrete corrosion protection solutions into the hands of contractors and building owners around the world to extend the service life of reinforced concrete structures. Cortec® is especially honored to be recognized for CorrVerter® MCI® Rust Primer by the Concrete Contractor 2022 Top Products awards and looks forward to continuing to make life easier for concrete contractors with this simple and effective method of rebar surface prep! Learn more about CorrVerter®MCI® Rust Primer here:

Keywords: CorrVerter, MCI, From Grey to Green, Concrete Contractor 2022 top products, concrete repair, alternative to sandblasting, surface applied corrosion inhibitors, corrosion protection, extend service life, rebar surface prep

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When and Why to Choose MCI®-2026 Floor Coating for Concrete Longevity

April 13, 2022

Extending concrete service life takes a multi-faceted approach, but the underlying principles are always the same: (1) properly understand the conditions and environment, (2) select the appropriate treatment, and (3) apply the chosen solution properly for best results. Many outstanding options exist in Cortec’s line of MCI® Technologies, but not all treatments are equally suited to every application. It is therefore important to know when and why to choose a product such as MCI®-2026 Floor Coating for concrete longevity.

 Choosing the Right Product for the Application
The first step in selecting a product to extend service life is considering the structure and its environment. For example, an engineer planning a new parking ramp in a harsh winter environment where deicing salts are used could extend service life by specifying Migrating Corrosion Inhibitor admixtures for the concrete mix. Workers performing concrete repairs can help the repair last longer by incorporating MCI® Mini Grenades into repair mortars. Facility managers can ward off corrosion on existing structures through periodic application of surface applied corrosion inhibitors (SACIs) such as MCI®-2020. While these products could also be used for concrete floors, often the biggest concern in an industrial environment is the risk of external concrete damage from heavy traffic and exposure to harsh chemicals. It is chiefly after this kind of damage that corrosion is more likely to occur by allowing corrosives to enter the substrate. MCI®-2026 Floor Coating is an excellent first line of defense against these problems.

Benefits of MCI®-2026 Floor Coating
There are three main areas where MCI®-2026 Floor Coating is especially helpful:

  • Applications with strict VOC limits
  • Federally inspected plants
  • Areas with heavy traffic and/or chemical spillage

MCI®-2026 Floor Coating addresses the first concern by being a 100% solids, two-component novolac epoxy coating with zero VOCs. This is perfect for maintaining VOC compliance and is a great advantage for workers applying the coating. In the second case, MCI®-2026 meets all USDA/FDA guidelines for use in federally inspected facilities. In regard to the third case, MCI®-2026 Floor Coating achieves a high degree of physical and chemical resistance while maintaining excellent adhesion to properly placed primers. In so doing, it protects concrete surfaces from aggressive industrial environments and prevents the intrusion of corrosive elements that would cause further concrete deterioration at the reinforcement level. MCI®-2026 Floor Coating can be used alone as a body/basecoat or as a topcoat if additional internal moisture resistance is needed by priming the floor below.

Best Practices for Good Concrete Coatings Performance
Next in importance to choosing an appropriate technology is applying it properly. As for any coating, good surface preparation is critical to ensuring the best performance possible. Before applying MCI®-2026 Floor Coating, workers should make sure that the concrete floor is clean and sound with a minimum surface profile of CSP-2. Existing coatings should be removed to ensure proper adhesion. As a two-component product (a feature that allows crosslinking for an overall stronger coating chemistry), MCI®-2026 Floor Coating should be properly mixed and applied at the right temperatures per manufacturer’s instructions to work as designed.

Choosing Physical and Chemical Durability for Concrete Floors
By choosing to apply MCI®-2026 Floor Coating, facility owners and managers are left with concrete floors with a high degree of physical and chemical resistance. These qualities make the floor more durable and help it last longer primarily by protecting against physical and chemical damage and secondarily by blocking the intrusion of corrosives in an aggressive environment. All this is achieved with a low VOC coating that can be used in federally inspected facilities. Contact Cortec® to see if MCI®-2026 Floor Coating is the right choice for your industrial concrete floor application:

Keywords: Cortec, From Grey to Green, MCI, extend service life, concrete deterioration, concrete damage, low VOC coatings, concrete longevity, concrete coatings, concrete floor durability

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PRESS RELEASE: An Easy Corrosion Inhibitor Add-In for Water-Based Paint Formulation

Paint formulators have much to think about when designing water-based coatings for metal. One key decision is the choice of corrosion inhibitor. Fortunately, Cortec® makes it easy for formulators to add the power of Cortec® Micro-Corrosion Inhibiting Coatings™ to their own paints at any stage of the production process with M-120 corrosion inhibiting additive for water-based paints.

A Unique Approach to Corrosion Protection
Where many coatings rely on sacrificial metals for corrosion protection, M-120 takes a different approach. It does not contain any heavy metals or zinc. Rather, it relies on the power of Cortec® VpCI® amine carboxylate based technology to form a microscopic corrosion inhibiting layer to protect metals at the microcavity level. This is where traditional inhibitors leave microscopic gaps due to their large relative particle size. M-120 helps fill in the gaps and can be used alone or in conjunction with traditional corrosion inhibitors or pigments to maximize the corrosion inhibiting ability of the paint. This VpCI® Technology has at least two direct corrosion inhibiting benefits.

Protect Against In-Can Corrosion
The first benefit relates to the challenges of waterbased paints. While water-based coatings present environmental advantages, such as the replacement of solvents with low VOC paint options, they also have inherent complications. For example, in-can corrosion is a common problem for water-based coatings that sit in a can unused for an extended period of time. Without protection, the user may pop the lid off after a year only to find the inside of the can rusted. At minimum, this reflects a bad image on the paint company. At maximum, it introduces possible paint contamination from rust flaking off inside the can. Adding M-120 can help protect against these potentially serious problems. Because M-120 contains both contact and vapor-phase protection, it offers comprehensive corrosion protection inside the can above and below the level of the paint.

Reduce Scribe Creep
Another great benefit of M-120 is its ability to reduce scribe creep thanks to its micro-corrosion inhibiting technology. Scribe creep is a standard test method used to measure corrosion when coated panels undergo salt spray or humidity testing. Any chip or minor damage to a coating can create a corrosion starting point from where rust can easily begin to spread underneath the coating and cause coating failure. If the rust does not creep very far from the coating scribe during testing, the additive/coating has a better chance of avoiding this type of coating failure in the field. M-120 performs well on this aspect.

Easy for Formulators to Use
Beyond corrosion protection, one of the beauties of M-120 is its versatility and ease of use. It can be added to many types of water-based resin systems—epoxies, urethanes, acrylics, and alkyds. It provides corrosion protection for both carbon steel and aluminum. It is also very easy for formulators to mix into their coating to boost the level of corrosion protection at any phase of manufacturing, unlike many inhibitors that cannot be post-added.

  • Mill Base: M-120 can be added to the mill base after the addition of a wetting agent and co-solvents; or it can be added to the resin prior to adding other components.
  • Letdown: M-120 can be added at the end of the mixing process after all other raw materials have been added.
  • Finished Product: M-120 can be used as in add-in even after the product has been made.

The last option is especially beneficial to formulators who have already made their coating, only to test it and find that the level of corrosion protection did not meet their expectations. At this point, formulators can easily mix in M-120 after the fact to enhance the corrosion protection of the finished coating without remaking the entire batch.

M-120 is a great option for any formulator looking for a unique corrosion inhibitor with multiple advantages—easy to add vapor-phase protection without heavy metals. Contact Cortec today to learn more about M-120:

Keywords: coatings, corrosion inhibitors, corrosion inhibitor additives, water-based coating additives, in-can corrosion, Cortec, water based paint formulation, low VOC paint, scribe creep, corrosion protection

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PRESS RELEASE: EcoAir® Biobased Outdoor Coating: New Addition to Cortec® Sustainable Corrosion Solutions!

Cortec® is pleased to announce the release of EcoAir® Biobased Outdoor Coating powered by Nano VpCI®. Since its inception, Cortec® Corporation has been looking for ways to make corrosion prevention more environmentally responsible. Sometimes this takes place in giant steps. Other times it is done by baby steps, such as replacing a petroleum-based chemical with a biobased ingredient to improve sustainability. With the release of EcoAir® Biobased Outdoor Coating powered by Nano VpCI®, Cortec® has addressed two aspects of environmental responsibility while expanding its options for user convenience.

Biobased Temporary Protective Coating

EcoAir® Biobased Outdoor Coating powered by Nano VpCI® is a ready-to-use temporary coating designed for severe marine and high humidity conditions. It comes in a convenient EcoAir® spray can, and it is classified as non-flammable. It provides multi-metal corrosion protection that is temperature stable to 180°F (82 °C). It leaves behind an oily protective film that does not dry and offers outstanding rust prevention in outdoor applications.* When the protection period is over, EcoAir® Biobased Outdoor Coating can be removed by rinsing with a Cortec® VpCI®-41x series cleaner degreaser. In addition to its key corrosion inhibiting quality, the most significant fact about EcoAir® Biobased Outdoor Coating by Nano VpCI® is its classification as a USDA Certified Biobased Product that contains 65% USDA biobased content. This high level has been achieved by combining renewably sourced oil and solvent materials with Cortec’s proprietary VpCI® corrosion inhibitor formulation for effective protection.

EcoAir® Spray Can Benefits

While Cortec® has offered biobased coating technology similar to EcoAir® Biobased Outdoor Coating in the past, now is the first time Cortec® has packaged it in an EcoAir® bag-on-valve spray can. This makes the coating easy to carry around and spray where needed, even in remote locations that do not have readily available electricity to run power spray equipment. EcoAir® cans can be sprayed in any direction, even upside down, making it easy to apply the coating in hard-to-reach areas.

EcoAir® cans also have environmental, health, and safety benefits. Instead of using traditional chemical propellants such as COor flammable propane/isobutane, EcoAir® Biobased Outdoor Coating is powered by compressed air and is classified as nonflammable. An EcoPouch® inserted into the pressurized can contains the liquid, which is expelled by the surrounding pressure as the valve is depressed. When the can is empty, the metal can be recycled after the pouch is removed.

Where to Use

EcoAir® Biobased Outdoor Coating powered by Nano VpCI® is a convenient, more sustainable option for temporary protection of metal parts almost any place a wet film corrosion inhibitor is desired. For example, tube manufacturers who need to temporarily store piping on sheltered outdoor racking can protect unpainted ends with a quick spray of EcoAir® Biobased Outdoor Coating. Offshore layup crews in the habit of protecting bare metal moving equipment parts with a petroleum-based wet film corrosion inhibitor can substitute EcoAir® Biobased Outdoor Coating while still getting a high level of protection in a marine environment. EcoAir® Biobased Outdoor Coating is also a great option for manufacturers who want to spray a light oily biobased protective coating on metal components before shipping or storage (e.g., automotive service parts).

Take Advantage of Biobased Options

For anyone who wants a biobased rust preventative temporary coating in convenient spray can format, EcoAir® Biobased Outdoor Coating powered by Nano VpCI® is an exciting addition to the market. EcoAir® Biobased Outdoor Coating helps users achieve wet film corrosion protection with a biobased, air-powered spray can alternative to petroleum-based corrosion inhibitors packaged in traditional aerosols.

Contact Cortec® to learn more about this new release:

View the product data sheet here:

Keywords: biobased coating, temporary coating, rust preventatives, Cortec, VpCI, bag on valve, spray can coatings, nonflammable aerosols, sustainable corrosion solutions, environmental responsibility

*Users should take care not to expose the coated materials to environments where the coating could be washed off by rain or similar elements.

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