Method of polymer impregnation

摘要

PCT No. PCT/US94/01557 Sec. 371 Date Sep. 19, 1994 Sec. 102(e) Date Sep. 19, 1994 PCT Filed Feb. 10, 1994 PCT Pub. No. WO94/18264 PCT Pub. Date Aug. 18, 1994.Methods of impregnating various polymer substrates with an impregnation additive, by simultaneously contacting the polymer substrate with an impregnation additive, carrier liquid, and supercritical fluid are provided. The impregnation additive is substantially insoluble in the supercritical fluid, and the carrier liquid is preferably substantially insoluble in the supercritical fluid.