Adhesive polyethylene oxide hydrogel sheet and its production

Details Adhesive polyethylene oxide hydrogel sheet and its production Adhesive polyethylene oxide hydrogel sheet and its production

C - Chemistry, Metallurgy

08

J

18/12, 204/91.79

C08J 3/28 (2006.01) C08J 5/18 (2006.01) C09J 7/00 (2006.01)

Patent

CA 1300079

"ADHESIVE POLYETHYLENE OXIDE HYDROGEL SHEET AND ITS PRODUCTION" Abstract of the Disclosure A solid sheet of adhesive hydrophilic gel which is a homogeneous aqueous mixture, substantially free of unbound water, monomers and crosslinking agents, con- sisting essentially of an amount dispersed uniformly in water of from about 4 to 35 wt% of a crosslinked poly- ethylene oxide, effective to form with the water a tacky surfaced viscoelastic solid which sheet of hydrophilic gel is produced by subjecting a liquid film of an aqueous solution having a viscosity of about 2-2,000 x 103 cps of a linear water soluble polyethylene oxide having a weight average molecular weight from about 0.02-6 x 106 Daltons to an amount of high energy radia- tion effective to convert the liquid film to a sheet of the viscoelastic solid having an adhesive face.

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