Patent ID: 7005143

Claim:
A medical article comprising a gel material comprising a copolymer of a difunctional poly(alkylene oxide) macromonomer, a polar monomer, a monofunctional poly(alkylene oxide) monomer, and a hydrophobic monomer, wherein the hydrophobic monomer is alpha-methylstyrene; and wherein the difunctional macromonomer has a weight average molecular weight of at least about 2000, and is of the formula: XO—(—CH(R 1 )—CH 2 —O—) m . . . (—CH 2 —CH 2 —O—) n —Y wherein; the mole ratio of m:n is within a range of about 1:9 to about 9:1; and R 1 is a (C1–C4) alkyl group; and X and Y are each independently selected from the group consisting of wherein R 2 is H or CH 3, R 3 is an aromatic group, aliphatic group, alicylic group, or combinations thereof, W is an alkylene or alkylene oxide group, and r =2–10.