Preparation process of block copolymers and resulting block copo

Details Preparation process of block copolymers and resulting block copo Preparation process of block copolymers and resulting block copo

1989-07-19

1993-02-16

Dean, Jr., Ralph H.

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

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

526190, 526192, 528 16, 528 19, 528 21, 528 23, 528 26, C08F28312

Patent

active

051872447

ABSTRACT:
A preparation process of block copolymers which comprises conducting living polymerization of a (meth)acrylic ester substantially in the absence of water, by using a macromolecular compound having a functional end group represented by the formula (1): ##STR1## Wherein R is H or an n-alkyl group having from 1 to 3 carbon atoms and R' is H or an alkyl group having from 1 to 6 carbon atoms, as a polymerization initiator and in the presence of a Lewis acid or in the presence of a donor compound of an anion selected from HF.sub.2.sup.-, (CH.sub.3).sub.3 SiF.sub.2.sup.- or F.sup.-, as well as novel block copolymers prepared therefrom are disclosed.

REFERENCES:
patent: 3862097 (1975-01-01), Milkovich et al.
patent: 4588795 (1986-05-01), Dicker et al.
patent: 4711942 (1987-12-01), Webster
patent: 4940760 (1990-07-01), Boettcher et al.

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