Eastman Chemical introduces non-chlorinated adhesion promoting primer

Eastman Chemical Co. (Kingsport, TN) has developed a non-chlorinated adhesion promoter that improves paint adhesion to thermoplastic polyolefin (TPO) and polypropylene substrates. Called Eastman AP 440-1 25% xylene, this primer was developed in response to customer requests for a non-chlorinated adhesion promoter over the last couple of years.

A proprietary blend of 25% AP 440-1 and 75% xylene, Eastman AP 440-1 serves as an adhesion promoting primer for low-temperature cure applications (between 80°C and 120°C). Eastman says its new primer performs well under melamine-cured base coat/polyurethane clear coat (1K/2K) and polyurethane base coat/polyurethane clear coat (2K/2K) systems commonly found in the painting of automotive bumpers and other TPO parts. In addition, the use of this primer can help manufacturers reduce processing and recycling costs due to the fact that TPO parts themselves are easier to process and recycle.

According to the manufacturer, when used under 1K/2K or 2K/2K low-temperature cure systems, primers based on Eastman AP 440-1 offer exceptional gasoline and humidity resistance. The product is part of Eastman's program to create coatings products for polyolefin-based plastics. Mike Callahan, business market manager for the company's coatings business, Eastman is continuing to research new formulations for waterborne and solventborne coatings.

The new formulation is being produced at Eastman's Batesville, AR, manufacturing facility and is available in 55-gal drums.

For more information, contact +1 (423) 229-4315.