OK
The Universal Selection Source:
Coatings Ingredients
Product News

Bayhydrol® Line of Commercial Products Expanded

Published on 2005-05-25. Author : SpecialChem

LEVERKUSEN -- Bayer MaterialScience AG is making six new coating raw materials from the broad Bayhydrol® range available for commercial sale after successfully establishing them on the market as trial products. By so doing, the Coatings, Adhesives, Sealants (CAS) Business Unit is emphasizing to its customers the growing importance of these dispersions.

"Three of the new commercial products are used primarily as binders for soft-feel coatings. Plastic components coated with an ultra-thin layer of these coatings feel pleasantly soft and warm, conveying a sense of quality," says Dr. Torsten Pohl of Bayer MaterialScience. Bayhydrol® PR 650, a solvent-free, aliphatic polyurethane dispersion previously sold as Bayhydrol® XP 2419, can be used to formulate soft-feel coatings which offer long-lasting resistance even in hot, damp climates, and also adhere better than conventional coatings to certain plastics. Soft-feel coatings based on Bayhydrol® PT 355 (previously XP 2429) and PT 475 (previously XP 2441) impress with their excellent haptic properties coupled with good chemical resistance. Bayhydrol® PT 475 is available in solution form to allow the formulation of waterborne soft-feel coatings with high solids contents.

The fourth new commercial product, the polyurethane dispersion Bayhydrol® UV 2282, is a universal binder for physically drying, waterborne UV coatings. Formerly available as Bayhydrol® VP LS 2282, it is used primarily as a raw material for wood coatings. This is also one of the applications for Bayhydrol® A 242, a hydroxy-functional polyacrylic dispersion which really shines, however, when combined with polyisocyanates from the Bayhydur® and Desmodur® N lines for use on mineral substrates as an anti-graffiti coating, for example.

Last but not least: "Bayhydrol® D 356 is a water-reducible, oil-free, saturated polyester characterized by very good hydrolytic stability," says Dr. Ulrich Freudenberg, an industrial coatings expert at Bayer MaterialScience. This new commerical product can be combined with amino resins, for example, for the formulation of water-reducible, single-layer baking coatings and primers. Combined with hexamethoxymethylmelamine (HMMM) resins, Bayhydrol® D 356 can also be used to formulate highly flexible topcoats for spray and dip application.

Source: Bayer MaterialScience AG


Back to Top