B - Operations – Transporting – 05 – D
Patent
B - Operations, Transporting
05
D
117/113, 117/143
B05D 3/02 (2006.01) A61L 27/18 (2006.01) B05D 7/02 (2006.01) B32B 25/20 (2006.01) C08J 7/04 (2006.01)
Patent
CA 2011268
METHODS OF FORMING PERMEATION-RESISTANT, SILICONE ELASTOMER-CONTAINING COMPOSITE LAMINATES AND DEVICES PRODUCED THEREBY ABSTRACT A method of making a permeation-resistant silicone elastomer-containing laminate useful for making fluid- containing implants such as mammary prostheses and gastric balloons. The method is accomplished by a) applying a layer of an unvulcanized heat-curable silicone elastomer composition to a cured silicone elastomer substrate, b) applying a layer of a solvent dispersion of a permeation- resistant elastomer and a solvent on the layer of unvulcanized silicone elastomer composition to form a three-layered laminate, and c) exposing the three-layered laminate to heat until the unvulcanized silicone elastomer composition is vulcanized. The unvulcanized silicone elastomer composition must be bondable to the cured silicone elastomer substrate, the permeation-resistant elastomer is selected from the group consisting of polyurethane, silicone- polyurethane copolymer and silicone-polycarbonate copolymer, and the permeation-resistant elastomer solvent must be compatible with both the permeation-resistant elastomer and the unvulcanized silicone elastomer composition.
Frisch Eldon E.
Dow Corning Wright Corporation
Gowling Lafleur Henderson Llp
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