Polyphenylene sulfide/polyphenylene sulfide sulfone block copoly

Details Polyphenylene sulfide/polyphenylene sulfide sulfone block copoly Polyphenylene sulfide/polyphenylene sulfide sulfone block copoly

1988-12-30

1990-10-02

Marquis, Melvyn I.

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

Synthetic resins

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

528388, 525310, 525420, 525462, 525437, 524609, C08G 7514

Patent

active

049608410

ABSTRACT:
A process for producing a block copolymer composed of polyphenylene sulfide segments and polyphenylene sulfide sulfone segments comprises reacting a polyphenylene sulfide prepolymer with a mixture of a dihalodiphenyl sulfone and a sulfidization agent, or a polyphenylene sulfide sulfone prepolymer with a mixture of a polyhalogenated aromatic compound and a sulfidization agent.

REFERENCES:
patent: 4654410 (1987-03-01), Kashiwami et al.
patent: 4659789 (1987-04-01), Katto et al.
patent: 4678831 (1987-07-01), Kawabata et al.
patent: 4734470 (1988-03-01), Kawabata et al.
patent: 4785057 (1988-11-01), Shiiki et al.

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