Block copolymers of alkadienes and monovinyl arenes

Details Block copolymers of alkadienes and monovinyl arenes Block copolymers of alkadienes and monovinyl arenes

1975-11-20

1977-11-08

Michl, Paul R.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C08L 5302

Patent

active

040576019

ABSTRACT:
A copolymer having the formula A--B--C is disclosed, which becomes a thermoplastic elastomer after essentially all the olefinic unsaturation therein has been removed by hydrogenation. A is a low vinyl poly-1,3-butadiene block, C is a poly(monovinyl arene) block, and B is either a block of acyclic, conjugated alkadiene containing 5-12 carbon atoms or a random copolymer block of at least one acyclic, conjugated alkadiene containing 4-12 carbon atoms, and at least one monovinyl arene containing 8-16 carbon atoms. The hydrogenated copolymer has the structure D--E--C in which D is essentially completely hydrogenated A, and E is block B from which the olefinic unsaturation is essentially removed by hydrogenation.

REFERENCES:
patent: RE27145 (1971-06-01), Jones
patent: 3598886 (1971-08-01), Hoeg
patent: 3670054 (1972-06-01), De La Mare
patent: 3686366 (1972-08-01), Winkler
patent: 3700748 (1972-10-01), Winkler
patent: 3830880 (1974-08-01), De La Mare

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