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Composite with gloss reducing polymer composition

  • US 20090191400A1
  • Filed: 03/31/2009
  • Published: 07/30/2009
  • Est. Priority Date: 09/15/2004
  • Status: Active Grant
First Claim
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1. A synthetic composite comprising:

  • (a) an extrudable thermoplastic substrate layer and(b) an extrudable thermoplastic capstock layer disposed thereon comprising(i) a core/shell polymer wherein (i) the core comprises 45 to 99.9, parts by weight of units derived from at least one C1-C8 alkyl acrylate monomer, and from 0.1 to 5 parts by weight of units derived from at least one crosslinker, and(ii) the shell comprises 80 to 99 parts by weight of units derived from at least one C1-C8 alkyl methacrylate monomer, and 1 to 20 by weight of units derived from at least one ethylenically unsaturated copolymerizable monomer different from the at least one C1-C8 alkyl methacrylate monomer and wherein the shell has a Tg above 20°

    C.; and

    (ii) at least 1% by weight of an acrylic polymer that contains 1-15%, by weight of the acrylic polymer, of one or more monomers selected from thegroup consisting of (mono, di, tri alkoxysilyl) alkyl(meth)acrylate, methylolacrylamide, methylol methacrylamide, methyl acrylamidoglycolate methylether, and acrylamidoglycolic acid.

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