Patent ID: 7879449
Filing Date: 2011-02-01
Classification: A47J,B05D,B82Y,C23C,Y10T

Abstract:
1. A non-stick coating composition comprising; a colored base layer for bonding to a substrate and a transparent top layer superimposed on and bonded to the base layer; the base layer composed of 70 to 85% by weight of a first matrix comprising the condensation reaction product of a silica sol and methyltrihydroxysilane and from 15 to 30% by wt of a colorant, with about 5 to about 20% by wt of the first matrix being substituted by hydroxy-terminated polydimethylsiloxane having a molecular weight of from about 400 to 6000; said base layer having a distinct lower portion composed principally of the first matrix and colorant, and a distinct upper portion composed principally of said hydroxy-terminated polydimethylsiloxane and said first matrix and colorant, and the top layer composed of a second matrix comprising the condensation reaction product of a silica sol and methyltrihydroxysilane with from about 5 to about 20% by wt of the second matrix being substituted by hydroxy-terminated polydimethylsiloxane having a molecular weight of from about 400 to 6000, and with from about 0.3 to about 12% by wt of the second matrix being substituted by fluoroalkoxysilane.