Mixture of isocyanate-terminated polyurethane prepolymers...

Details Mixture of isocyanate-terminated polyurethane prepolymers... Mixture of isocyanate-terminated polyurethane prepolymers...

C - Chemistry, Metallurgy

08

L

C08L 75/04 (2006.01) C08G 18/12 (2006.01) C08G 18/40 (2006.01) C08G 18/42 (2006.01)

Patent

CA 2097796

2097796 9213017 PCTABS00014 A blend of isocyanate-terminated polyurethane prepolymers comprising: (a) a fist prepolymer which comprises the reaction product of an at least essentially semicrystalline hydroxy-functional material and a polyisocyanate; (b) a second prepolymer which comprises the reaction product of a poly(tetramethylene glycol) ether and a polyisocyanate; and (c) a third prepolymer which comprises the reaction product of an essentially amorphous hydroxy-functional material and a polyisocyanate. The blend may also include a fourth prepolymer which comprises the reaction product of a slightly branched hydroxy-functional material and a polyisocyanate.

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