Patent ID: 7368163
Filing Date: 2008-05-06
Classification: B01J,B01L,B32B,C08F,C08J,F04B,Y10T

Abstract:
1. A polymer article comprising: a plurality of bulk polymer layers that includes a first polymer layer formed from a first silicone elastomer having a first functional group, and a second layer formed from a second silicone elastomer having a second-functional group, wherein the first and second functional groups are complementary functional groups that react to form a covalent bond, wherein the first reactive functional group is contributed by a polymer used to prepare the first silicone elastomer, and the second reactive-functional group is contributed by a crosslinking agent used to prepare the second silicone elastomer, wherein the first and second silicone elastomers are derived from the same polymer and crosslinking agent, with the first elastomer having an excess of the group contributed by the polymer and the second elastomer having an excess of the group contributed by the crosslinking agent, and wherein the two polymer layers are covalently bonded together through the reaction of the complementary functional groups in each of the layers.