Melt curing arylene sulfide polymers with oxygen

Details Melt curing arylene sulfide polymers with oxygen Melt curing arylene sulfide polymers with oxygen

1984-01-12

1985-04-09

Anderson, Harold D.

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

Synthetic resins

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

C08G 7514

Patent

active

045102970

ABSTRACT:
A method for treating arylene sulfide polymer in which the polymer is melted and the hot melt stirred in a vessel while contacting the polymer with oxygen for a time sufficient to obtain a product of increased viscosity. In an embodiment of the invention, the product of increased viscosity is transferred to an extruder where contact of the melted polymer with oxygen is continued further to increase the viscosity of the material.

REFERENCES:
patent: 3524835 (1970-08-01), Edmonds, Jr. et al.
patent: 3717620 (1973-02-01), Rohlfing
patent: 3725362 (1973-04-01), Walker

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