Method of treating a poly(arylene sulfide/sulfone) resin, and co

Details Method of treating a poly(arylene sulfide/sulfone) resin, and co Method of treating a poly(arylene sulfide/sulfone) resin, and co

1990-04-23

1991-08-20

Anderson, Harold D.

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

Synthetic resins

Treating polymer containing material or treating a solid...

528388, 528481, 528502, C08G 7516, C08G 7520

Patent

active

050415328

ABSTRACT:
A method of making a poly(arylene sulfide/sulfone) resin comprises heating amorphous poly(arylene sulfide/sulfone) resin at an elevated temperature but below the melting temperature of the resin in a vacuum environment so that extrudate made from the resin is smooth and has reduced gas bubble content. The invention also relates to poly(arylene sulfide/sulfone) resin made in accordance with the method.

REFERENCES:
patent: 3478000 (1969-11-01), Saunders et al.
patent: 3524835 (1970-08-01), Edmonds, Jr. et al.
patent: 3562199 (1971-02-01), Hill, Jr. et al.
patent: 4016145 (1977-05-01), Campbell
patent: 4113698 (1978-09-01), Staniland
patent: 4274993 (1981-06-01), Narisawa et al.
patent: 4301274 (1981-11-01), Campbell

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