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Abrasion resistant silicone coated polycarbonate article

  • US 4,210,699 A
  • Filed: 11/01/1978
  • Issued: 07/01/1980
  • Est. Priority Date: 11/01/1978
  • Status: Expired due to Term
First Claim
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1. A shaped non-opaque coated polycarbonate article having improved abrasion and chemical solvent resistance comprising a polycarbonate substrate having on at least one surface thereof (i) an adhesion promoting primer layer consisting essentially of a thermoplastic acrylic polymer containing functional groups;

  • and (ii) having disposed on said primer layer a tenaciously and durably adhered top coat consisting essentially of a colloidal silica filled thermoset organopolysiloxane which is the condensation product of a silanol of the formula RSi(OH)3 in which R is selected from the group consisting of alkyl radicals of 1 to 3 carbon atoms, the vinyl radical, the 3,3,3-trifluoropropyl radical, the gamma-glycidoxypropyl radical and the gamma-methacryloxypropyl radical, at least 70 weight percent of the silanol being CH3 Si(OH)3 .

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