Diamond Shamrock Corporation

Paul H Goble

Richard L Harris

Improved shaped polymeric articles, including ostomy seals, are obtained by radiation crosslinking an acrylamide polymer composition comprising a water-soluble acrylamide polymer plasticized with a quantity of a water-miscible polyol (containing water) that provides a soft, flexible and elastomeric composition.

Radiation crosslinked acrylamide polymer compositions and shaped

Disclosed is a process for preparing alkenyl ethers from high molecular weight polyols in a liquid phase system containing concentrated alkali metal hydroxide, water, water immiscible hydrocarbon solvent and high molecular weight polyol such that the addition of an alkenyl halide results in a reaction which yields an alkenyl ether product which is not readily distillable from the reaction solution at slightly elevated temperatures and atmospheric pressures.

Alkenyl ethers from high molecular weight polyols

Disclosed is a polymercaptan material and method for preparation thereof useful in the curing of epoxy resins to impart a more hydrophobic characteristic to the resultant thermoset polymers for use in applications where there is frequent contact with water. The compound described and prepared is a propoxylated ether polythiol of the structure: ##STR1## WHEREIN Y IS AN INTEGER OF AT LEAST 1, X IS AN INTEGER OF AT LEAST 2, R is a polyol consisting of atoms of carbon, hydrogen and oxygen and free of reactive functional groups and the total number carbon atoms in R and ##STR2## IS GREATER THAN 15.

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Painesville, OH, United States of America

Paul H Goble