The Dow Chemical Company

Kimbley A Bushman

Michael K Laughner

Robert B Turner

Ralph D Priester, Jr

Richard D Peffley

Raymond A Plepys

Manuel Gonzales, Jr

This invention is a polyurethane and/or polyurea elastomer prepared in the reaction of:

Polyurethane elastomers from EO/BO polyether polyols

This invention comprises a process whereby an amine functional compound having an equivalent weight of at least about 400 is reacted with an excess of a polyisocyanate to form an isocyanate-terminated prepolymer or quasi prepolymer, which polymer or quasi prepolymer is reacted with an isocyanate-reactive material which is preferably a relatively low equivalent weight polyol or mixture thereof with an additional amount of said amine functional compound or a relatively high equivalent weight polyol to form a polyurea containing polymer which is preferably non-cellular or microcellular.

Polyurea polymers prepared from urea containing prepolymers

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Lake Jackson, TX, United States of America

Kimbley A Bushman