C - Chemistry – Metallurgy – 08 – G
Patent
C - Chemistry, Metallurgy
08
G
402/151, 402/157
C08G 18/16 (2006.01) C08G 18/10 (2006.01) C08G 18/32 (2006.01) C08G 18/50 (2006.01)
Patent
CA 1243145
ABSTRACT This invention is directed to a process whereby an amine functional compound having an equi- valent weight of at least about 400 is reacted with an excess of a polyisocyanate to form an isocyanate-ter- minated prepolymer or quasi prepolymer, which prepolymer or quasi prepolymer is reacted with an isocyanate-reac- tive material to form a polyurea and/or polyurea-poly- urethane polymer. The amine functional compound and the polyisocyanate are employed in proportions such that the isocyanate-terminated prepolymer or quasi prepolymer has an isocyanate content of from 3 to 12 percent by weight.
504813
Bushman Kimbley A.
Gonzales Manuel Jr.
Peffley Richard D.
Plepys Raymond A.
Priester Ralph D.
Smart & Biggar
The Dow Chemical Company
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