Patent ID: 7791788
Filing Date: 2010-09-07
Classification: C08G,C09D,G02F

Abstract:
1. A film suitable for use as the light-modulating element of an SPD light valve, said film comprising a cross-linked polymer matrix and having droplets of a liquid light valve suspension distributed in the cross-linked polymer matrix, said liquid light valve suspension comprising particles suspended in a liquid suspending medium, wherein the polymer matrix includes at least one siloxane co-polymer comprised of one or more of each of the following units, (a) at least one selected from the group consisting of a silicon-containing, non cross-linkable monomer, a silicon-containing non cross-linkable oligomer and a combination of both said monomer and said oligomer; (b) at least one silicon-containing cross-linkable monomer; and (c) at least one silicon-containing monomer including a non-cross-linking pendent moiety comprising one or more unhindered polar groups capable of bonding to a substrate, wherein the polar groups do not prevent the matrix polymer as a whole from being cross-linked, wherein said film exhibits a greater degree of adhesion to substrates in contact therewith than films which do not include a unit as recited in (c) above.