Patent ID: 7556822
Filing Date: 2009-07-07
Classification: A61L,C08G,G02B

Abstract:
1. A biomedical polymer formed from polymerizing a mixture comprising: (a) an ethylenically unsaturated macromonomer comprising a random or block copolymer of Formula I: wherein: L is a linear, branched, or cyclic hydrocarbyl chain, optionally containing heteroatoms as well as carbonyl; Z is an ethylenically unsaturated free radical polymerizable group which is provided by a moiety selected from the group consisting of (meth)acrylamide, (meth)acrylate, and styrenic moieties; y is ≧2; x is ≧200 and x is at least 100 times greater than y; and (b) a cross-linking initiator; wherein the biomedical polymer has a shear modulus as measured by a Bohlin controlled stress rheometer in the range of 0.01-100 kPa.