ABA type block copolymers

Details ABA type block copolymers ABA type block copolymers

1993-06-29

1994-05-24

Berman, Susan

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

Synthetic resins

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

525294, 525299, 525 92, 525 94, 522 57, 522116, 522176, 522182, 522183, C08F29300, C08F29700, C08F 248

Patent

active

053149629

ABSTRACT:
An acrylate is polymerized by the photo-decomposition of ##STR1## to make a polymeric intermediate containing dithiocarbamate groups at both its ends, and a hard polymer-forming monomer is polymerized by the photo-decomposition of this dithiocarbamate group-containing polymeric intermediate to form blocks of a polymer of said hard polymer-forming monomer on both sides of said polymeric intermediate, thereby forming an ABA type block copolymer.

REFERENCES:
patent: 3287298 (1966-11-01), D'Alelio
patent: 4045517 (1977-08-01), Guerin et al.
Polymer Bulletin, vol. 7, pp. 197-203, 1982, T. Otsu, et al., "Efficient Synthesis of Two or Multi Component Block Copolymers through Living Radical Polymerization with Polymeric Photoiniferters".
Otsu et al, "Living Mono and Biradical Polymerizations in Homogeneous System Synthesis of AB and ABA Type Block Copolymers" Polymer Bulletin 11, 135-142, (1984).

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