Star block polyol lactam copolymer and process for the productio

Details Star block polyol lactam copolymer and process for the productio Star block polyol lactam copolymer and process for the productio

1986-10-17

1988-06-14

Anderson, Harold D.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From carboxylic acid or derivative thereof

528312, 528319, C08G 6914

Patent

active

047512822

ABSTRACT:
A novel star block copolymer represented by the general formula as shown below and a process for the production thereof are described. The copolymer has superior physical properties, particularly impact strength and, furthermore, is reduced in coloration. Thus the copolymer can find numerous uses; for example, it can be used in preparation of fibers, foams, automotive parts, and electrical components. The copolymer is produced by copolymerizing a star-shaped polyether prepolymer and a lactam, said prepolymer being prepared by reacting a star-shaped polyoxyalkylene having at least 3 terminal hydroxy groups and an N-chlorocarbonyl lactam, in the presence of an anionic polymerization catalyst. ##STR1## In this formula, all the symbols are as defined hereinbefore.

REFERENCES:
patent: 4650608 (1987-03-01), Takeo et al.

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