Process for the preparation of a nylon block copolymer

Details Process for the preparation of a nylon block copolymer Process for the preparation of a nylon block copolymer

C - Chemistry, Metallurgy

08

G

400/2016

C08G 69/18 (2006.01) C08G 18/80 (2006.01)

Patent

CA 1318050

22772-1130 A B S T R A C T This invention relates to a process for the pre- paration of a nylon block copolymer in which two or more reaction streams consisting of molten lactam are combined in a mould, said reaction streams containing one or more poly- ols, lactam blocked polyisocyanates and catalysts, and the catalysts and polyisocyanates being in different streams, which reaction, streams having a temperature of 68°C - 95°C intro- duced into a mould having a temperature of 100°C - 180°C. The advantage of this process is that now the polyol is homo- geneously distributed throughout the nylon matrix, and as a consequence a nylon block copolymer with excellent notched resistance is obtained.

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