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POLYESTER RESINS BASED ON FATTY ACIDS THAT HAVE A SHORT OIL LENGTH, AQUEOUS DISPERSIONS AND ASSOCIAT

Wednesday, July 31, 2013   (0 Comments)
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United States Patent Application 20130197152

Abstract

The invention relates to a polyester resin which is based on at least one fatty acid, with a zero oil length (0%) or an oil length of between 0 and 35%, with a weight ratio of oxidizable fatty acids (monoacids), relative to the overall fatty acids, of 0 or greater than 0 and ranging up to 1, and which is based on an acid component comprising, in addition to said fatty acid, from 30% to 85% by weight, relative to the total weight of said resin, of rosin and/or of derivatives thereof bearing at least one carboxylic acid function.

The resin of the invention is used as binder in coatings and in particular in water-based coatings such as paints, varnishes and surface coatings, in the form of an aqueous dispersion of resin, with particular performance in terms of aqueous dispersibility, development of hardness over time in the absence of siccativating agent during drying, and of resistance to yellowing and to water.

*Patent
Herve, Grégoire (Verberie, FR), Beurdeley, Patricia (Montmorency, FR), Kurczak, Michael (Liancourt, FR),    2013    POLYESTER RESINS BASED ON FATTY ACIDS THAT HAVE A SHORT OIL LENGTH, AQUEOUS DISPERSIONS AND ASSOCIATED COATINGS    United States    Arkema France (Colombes, FR)    20130197152  

 http://www.freepatentsonline.com/y2013/0197152.html