Patent ID: 6258918
Filing Date: 2001-07-10
Classification: B32B,C08G,C09D,Y10T

Abstract:
A polyurethane with primary aliphatic isocyanate crosslinking, wherein about 25% or more of the total crosslink density is contributed by a polyisocyanate component, said polyurethane exhibiting at least one of the properties selected from the group consisting of a flexural modulus of 1.0.times.10.sup.8 pascals or less, a storage modulus of 1.0.times.10.sup.8 pascals or less, a Shore A hardness of less than 94, a Hoffman scratch-hardness test result of 2 or less, and a color shift, in accordance with heat aging test ASTM D2244-79, within 1 delta E.