Preparation, composition, and use of block polymers

Details Preparation, composition, and use of block polymers Preparation, composition, and use of block polymers

1978-02-09

1979-05-01

Michl, Paul R.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C08F29704

Patent

active

041523709

ABSTRACT:
Linear block copolymers having the formula A-B/A'-C and C-B/A'-A are prepared, wherein terminal block A is a poly(monovinylarene) block, terminal block C is a block of low vinyl poly(1,3-butadiene), having less than about 30 mole percent vinyl pendant groups, and the center block B/A' is a block composed of monovinylarene monomer units and of monomer units of certain conjugated dienes. Center block B/A' has a tapered structure.

REFERENCES:
patent: 3670054 (1972-06-01), De La Mare
patent: 4086298 (1978-04-01), Fahrbach

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