Process for producing transparent block copolymer resin

Details Process for producing transparent block copolymer resin Process for producing transparent block copolymer resin

1976-01-16

1978-05-02

Michl, Paul R.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260 297E, 260 297N, C08F29704

Patent

active

040874842

ABSTRACT:
An aromatic vinyl compound and a conjugated diene are block-copolymerized in a hydrocarbon solvent using an organolithium compound as an initiator to form a hydrocarbon solution of a block copolymer resin which is then steam-stripped off the solvent in the presence of a specified block polyether type dispersing agent to yield a granular polymer. The block copolymer thus obtained has favorable properties as granules and can be fabricated into articles being highly transparent and having excellent mechanical properties.

REFERENCES:
patent: 2965678 (1960-12-01), Sundberg
patent: 3726824 (1973-04-01), Saunders
patent: 3923707 (1975-12-01), Berg
Sisley & Wood, "Encyclopdia of Surface-Active Agents", Chemical Pub. Co., 1964, p. 406.
Schwartz & Perry, "Surface Active Agents and Detergents Vol. II", Interscience Pub. Inc., New York, 1958, pp. 163-166.

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