Silicone-Urethane Copolymers
AssigneeAdvansource Biomaterials Corporation
InventorJoseph Rega
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Abstract
The invention relates to silicone-urethane copolymers and methods for making the copolymers. The silicone-urethane copolymers can have many physical properties usually associated with polyurethanes but also the feel and characteristics of silicones.
Claims20
A silicone-urethane copolymer obtained from a one-step reaction of reactants comprising a diisocyanate, a polycarbonate diol, a polysiloxane, and a C2-8 diol chain extender, wherein the copolymer comprises polycarbonate internal segments, polysiloxane internal segments, polyurethane internal segments, and siloxane terminating segments, and wherein the copolymer comprises between about 5% by weight and about 30% by weight of polysiloxane.
Dependencies are inferred from the claim text.