Polyurethane pressure-sensitive adhesives

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – At least one aryl ring which is part of a fused or bridged...

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524589, 528 44, 528 76, 528 77, 528 85, 602 54, C08J 300, C08K 320, C08L 7500, C08G 1800

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active

059524227

ABSTRACT:
Method for forming a polyurethane based adhesive composition in which a reaction mixture of at least one NCO-terminated prepolymer and a polyhydroxy compound is heated at a temperature and for a length of time sufficient to provide a gel content of from about 30 to 42% by weight and a molecular weight of extractables of at least about 45,000. Polyurethane based adhesives prepared by the method and medical devices employing the same are also disclosed.

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Odian, G., Principles of Polymerization, 1981, pp. 20-25.

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