Patent ID: 8815404
Filing Date: 2014-08-26
Classification: C08G,C08J,C09D,Y10T

Abstract:
1. A protective film comprising one or more pairs of a first coating film and a second coating film, wherein the first coating film contains a polysilazane-based polymer and the second coating film contains a polysiloxane-based polymer comprising a C wherein the first and second coating films form alternating layers in the protective film, wherein the polysilazane-based polymer is represented by Formula 1: wherein n is a number from 500 to 1,000,000, wherein the polysiloxane-based polymer is prepared by hydrolysis and polycondensation of at least one compound represented by Formula 6: wherein R is C 1 -C 3 alkyl group, X 1 , X 2 and X 3 are each independently a C 1 -C 10 alkoxy group, n is an integer from 3 to 8 and m is an integer from 1 to 10, and at least one compound represented by Formula 7: wherein R is C 1 -C 3 alkyl group, and X 1 , X 2 and X 3 are each independently a C 1 -C 10 alkoxy group, and wherein the second coating film further comprises a multi-functional cyclic siloxane compound represented by Formulas 10 or 13,