US 6,982,299 B2
Weatherable resin compositions having low gloss appearances
Moh-Ching Oliver Chang, Wexford, Pa. (US); Allen R. Padwa, Worcester, Mass. (US); Chuan-Ju Chen, Amherst, Mass. (US); and Daniel Dufour, Langenfeld (Germany)
Assigned to Lanxess Corporation, Pittsburgh, Pa. (US); and Bayer Aktiengesellschaft, Leverkusen (Germany)
Filed on Aug. 29, 2002, as Appl. No. 10/230,769.
Prior Publication US 2004/0044129 A1, Mar. 04, 2004
This patent is subject to a terminal disclaimer.
Int. Cl. C08G 63/48 (2006.01)
U.S. Cl. 525—64 19 Claims
 
1. A thermoplastic molding composition comprising a grafted acrylate rubber and an effective amount of a gloss reducing agent, said agent being the reaction product of
(i) a compound having two or more maleic anhydride groups per molecule, and
(ii) a compound having two or more terminal primary amine groups per molecule wherein
the grafted acrylate rubber is present in the composition in an amount of at least 85% and less than 98.4% and the gloss reducing agent is present in an amount greater than 1.6% and up to 15% the percents being relative to the weight of the composition.