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Frequently Asked Questions


Why Are LUMIFLON Resins So Weatherable?

The ultra-weatherability of LUMIFLON resins is the reason for their popularity in many exterior coating applications. This question of why they work so well is frequent among our potential customers. The outstanding weatherability of FEVE-based coatings is attributable to the high bond energy of the carbon-fluorine bond. These carbon-flourine bonds have the capability to absorb much greater amounts of UV energy and will keep this energy from affecting the weaker bonds/ linkages in the LUMIFLON polymer structure. This means that it is difficult for the UV energy to generate free radicals in FEVE resins, the method by which degradation of coatings by UV energy is propagated.

Knowing this, you can see why the presence of the fluorine bonds needs to be equally spread out along the polymer backbone so as to insure protection of the entire backbone. The alternating structure created in all of the LUMIFLON resins – every fluoroethylene monomer segment sandwiched between the vinyl ether monomer segments – makes the achievement of a 30-60 year coating attainable.

The laboratory testing of this property is quite extensive. For the accelerated weathering in the laboratory, we utilize the QUV Weatherometer and the Xenon Arc Weatherometer. For the long term outside exposure, we send test panels to both South Florida testing sites and to Arizona testing sites for the EMMAQUA exposure (EMMAQUA stands for “Equatorial Mount with Mirrors for Acceleration with Water”). We also monitor actual LUMIFLON coating applications on structures as they age.

What Are The Pros And Cons of The Three Types of FEVE Resins? Can All Of Them Can Be Applied On Site?

FEVE resins are advantageous because they can be field applied. The solvent based products can be used in many industrial and OEM applications also. The water based products are useful in field applications and are appropriate for applications requiring low VOC.

How Does Hardness Compare To Conventional Systems?

2K FEVE is comparable to other conventional 2K systems.

What, If Any, Are The Bio-Hazard Ramifications Of The FEVE Coating?

FEVE polymers are non-hazardous; however, some resins may contain hazardous carrier solvents. Please refer to the MSDS.

Are There Any Health Concerns Using “FEVE” Polyols Compared To Typical Polyester Polyols?

FEVE polymers are non-hazardous; however, some resins may contain hazardous carrier solvents. Please refer to the MSDS.

What Is Life Expectancy If Correctly Applied?

It depends on what is expected during the life of the coating. FEVE coatings are superior in gloss retention and color retention. Coated structures in Japan still display good gloss and color retention after 28 years. It is estimated that these coatings will last 60 years before the structure needs to be recoated. If FEVE coatings are used in combination with the appropriate primers, they should have the same life expectancy for ample corrosion protection.

What Is The Life Cycle Advantage Against Polysiloxane Based Resins?

We have seen greater gloss retention and better cracking resistance in accelerated UV exposures – both QUV-A and Xenon Arc weatherometers.

Why Is Gloss Retention Important?

Gloss retention is a measure of coating durability. As a coating degrades, the surface becomes rough and the gloss decreases. A coating that withstands this degradation will retain its gloss.

Can Graffiti Be Removed Easily From The Coating Without Reducing The Coatings Longevity?

FEVE based coatings have been shown to be easier to clean than conventional coatings. These coatings are also highly chemical resistant. These properties suggest that an FEVE based coating will maintain longevity after graffiti removal.

Have You Tested The FEVE Emulsions Or Dispersions For Oil And Water Based Stains Like Motor Oil, Mustard, Coffee, Etc?

Yes. We have tested the water based and solvent borne FEVE resins for stain resistance. We see excellent resistance to staining from mustard, red wine, coffee to motor oil and vegetable oil.

Has There Been Any Work Done With The FEVE Emulsions Or Dispersions In Architectural Formulations At Small Loadings Or Does Cost Prohibit This? If So, What Properties Would Be Enhanced? Can You Make ‘Brushable’ Formulations With The FEVE Materials?

Most markets have cost restraints and the architectural paint market is one such market. To address this, we have studied our water based resins in blended systems, typically with industry standard acrylic polyols. We have tested down to levels of 2.5% FEVE resin. We have seen in improvements in accelerated weathering and water resistance. FEVE resins can be used in brushable paints that are common in the architectural paint market.

Do The FEVE Coatings Offer Superior Resistance To Weathering And Loss Of Adhesion In Concrete And Precast Concrete Structures?

FEVE coatings have been used to coat concrete structures successfully. The main purpose of FEVE coatings on concrete is both protection and long-term appearance. However, when you mention “loss of adhesion”, FEVE coatings cannot correct this problem if it is caused by improper surface preparation or a recurring moisture problem of the concrete itself.

How Do FEVE Coatings Work For Anti Graffiti Paints?

FEVE coatings may enhance anti-graffiti paint formulations. The formulations usually contain other ingredients to boost the anti-graffiti properties

How Does The Second Generation Coatings Compare To Kynar?

There are many ways to compare these two coating types. The fact that that you can field apply the FEVE-based coatings is a big advantage over the PVDF-based coatings.

What Are FEVE’s Advantages Over PVDF Coating Systems?

FEVE resins are hydroxyl functional, allowing them to be used in 2K crosslinked systems. They also are curable at ambient temperatures so they can be applied outside of a factory for applications like bridge repair. Finally, the FEVE chemistry yields coatings with high gloss levels upwards of 90 degrees (measured at a 60o angle).

How Do FEVE Resin Technologies Compare To Fluoroacrylate Emulsions In Terms Of Durability?

Specifically the durability of FEVE compared to perfluorinated fluoroacrylate emulsions and are there any issues with PFOA or PFOS with the FEVE resins?

Our weathering studies show superior performance of fluorinated resins compared to other coating resins. The durability of FEVE resins to other fluorinated resins is comparable.  The difference is seen in the high gloss achieved with FEVE resins and the ability of FEVE resin based coatings to be cured at ambient conditions. FEVE resins have no issues with PFOA or PFOS.

Regarding The Life Cycle Costs: Are Surface Preparation Requirements Comparable For Each Of The Products Being Compared?

Yes.  FEVE based coatings require no special or unusual surface preparation compared to conventional or traditional coatings sytems.

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