Modified Acrylic Latex Binders Are Designed for Restoration of TPO Roofing Membranes

Arkema Coating Resins, a business unit of Arkema, has added to its line of waterborne binders for use in formulating roof coatings. The new product is ENCOR Flex 192, a modified acrylic latex binder designed for coatings used in the restoration of low-slope, commercial thermoplastic polyolefin (TPO) roofing membranes. Properly formulated, ENCOR Flex 192 offers outstanding dirt pickup resistance and adhesion to TPO, and can eliminate the need for a solvent primer to help lower roof maintenance and restoration costs.

The AC Cool Roof Binder systems are based on Kynar Aquatec PVDF binders, developed by Arkema’s fluoropolymer group, and ENCOR Flex polymers from Arkema Coating Resins.

Currently three systems are available, allowing greater formulation flexibility across different applications:

• AC III Binder System – This system uses a Kynar Aquatec FMA-12 PVDF based topcoat and ENCOR Flex 187 all acrylic or ENCOR Flex 192 modified acrylic basecoat to provide the highest possible level of performance and durability. It is designed primarily for the most demanding cool roof coating applications.
• AC II Binder System – Utilizing a proprietary ENCOR Flex 187 all acrylic polymer or ENCOR Flex 192 modified acrylic latex, this base and topcoat system delivers excellent performance and meets ASTM D-6083, “Standard Specification for Liquid Applied Acrylic Coating Used in Roofing.”
• AC I Binder System – This ENCOR Flex 3186 styrene acrylic system provides a good mix of performance and value for less demanding applications.