Microcellular elastomers with improved processability and proper

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Cellular products or processes of preparing a cellular...

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521137, 521914, C08G 1810

Patent

active

058563725

ABSTRACT:
Microcellular polyurethane elastomer shoe sole components have exceptional physical properties may be prepared from isocyanate-terminated prepolymers derived from polyoxypropylene diols having a molecular weight of from about 2000 Da to 8000 Da, an unsaturation less than about 0.02 meq/g, and a random oxyethylene content of from about 5 to about 15 weight percent. The shoe sole components exhibit high tensile strength, elongation, resilience, and in addition have excellent tear strength, particularly 90.degree. angle tear.

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ASTM D-2849-69 "Testing of Polyurethane Polyol Raw Materials" Dec. 19, 1969.
R.L. Mascioli, "Urethane Applications for Novel High Molecular Weight Polyols" 32nd Annular Polyurethane Technical/Marketing Conf., Oct. 1-4, 1989, pp. 139-142.

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