Abstract: Disclosed is an orthopedic casting material comprising a fabric coated or impregnated with a blend of polyisocyanate prepolymer and an effective detackifying quantity of one or more hydrophilic bisurethanes. In a preferred embodiment, the hydrophilic bisurethane is derived from the reaction of a polyethylene glycol having a molecular weight of about 4000 and methylene-4,4'- bis(phenylisocyanate) to form an isocyanate-terminated prepolymer which is then reacted with ethanol.
Type:
Grant
Filed:
December 18, 1989
Date of Patent:
January 19, 1993
Assignee:
Carapace
Inventors:
Martin Edenbaum, Kurt C. Frisch, Aisa Sendijarevic, Shaio-wen Wong
Abstract: An orthopedic casting material comprising a fabric impregnated and/or coated with a reactive fluid polyisocyanate prepolymer which hardens when wetted with water is treated with a mixture of oil and polymeric micro-powder to produce a material with reduced tack, reduced slip and reduced foaming properties compared to similar commercially available products. The material is further preferably coated or impregnated with a filler such as amorphous silicate.
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