Method for producing transparent block copolymer resin

Details Method for producing transparent block copolymer resin Method for producing transparent block copolymer resin

1977-08-23

1978-10-24

Michl, Paul R.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C08F29704

Patent

active

041221346

ABSTRACT:
By block-copolymerizing a vinyl aromatic compound and a conjugated diene in a hydrocarbon solvent with an organolithium compound as initiator, there is obtained a block copolymer which comprises in the molecule three blocks of homopolymerized vinyl aromatic compound, randomly copolymerized vinyl aromatic compound and conjugated diene, and homopolymerized diene, respectively. The resulting block copolymer is transparent and excellent in mechanical properties, and is suitable for use in the manufacture of sheeting, film, and various molded articles.

REFERENCES:
patent: 3251905 (1966-05-01), Zelinski
patent: 3778490 (1973-12-01), Hsieh
patent: 3853978 (1974-12-01), Horiie
patent: 3872068 (1975-03-01), Horiie
patent: 4054616 (1977-10-01), Miki

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