Star block copolymer from lactam and polyol and process for the

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

1985-08-06

1987-03-17

Anderson, Harold D.

Organic compounds -- part of the class 532-570 series

Organic compounds

Unsubstituted hydrocarbyl chain between the ring and the -c-...

528312, 528323, 528425, 546243, 548543, 548550, 548551, 540525, C08G 6700, C07D21000

Patent

active

046506080

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: 4507465 (1985-03-01), Chiba et al.

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