Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Cellular products or processes of preparing a cellular...
Patent
1993-10-18
1995-01-31
Nakarani, D. S.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Cellular products or processes of preparing a cellular...
152452, 4283155, 4283179, 428327, 428328, 428330, 428331, 4284239, 521128, 521131, 521137, 524507, 525130, B32B 522, B60C 501, C08L 7500
Patent
active
053859537
ABSTRACT:
A microcellular polyurethane composite material comprising desiccated rubber particles embedded in a microcellular matrix of polyurethane. Rubber particles derived from tires and other sources are combined with a desiccant to remove moisture present in the particles. The resulting desiccated rubber particles and desiccant are mixed with a polyol, polyisocyanate, catalyst, and blowing agent to form a precursor blend which is cured to produce a microcellular polyurethane composite. The resulting microcellular rubber-polyurethane composite may be used for tires, shoe and boot soles, surface coatings, and other applications requiring a material which is structurally strong and wear resistant. The desiccated rubber particles may be premixed with the polyol and/or added simultaneously with the polyol, polyisocyanate, catalyst, and blowing agent during composite molding.
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Nakarani D. S.
Urethane Technologies, Inc.
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