Heat curing arylene sulfide polymer

Details Heat curing arylene sulfide polymer Heat curing arylene sulfide polymer

1981-05-06

1983-01-25

Marquis, Melvyn I.

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

Synthetic resins

From sulfur-containing reactant

C08G 7514

Patent

active

043704719

ABSTRACT:
A method for curing particulate arylene sulfide polymer in which the particulate polymer is preheated from ambient temperature to a skin temperature within the range of about 230.degree. to about 260.degree. C. by agitating the particulate polymer in a polisher apparatus, transferring the preheated particles to a curing vessel, and further heating the preheated particulate polymer in the curing vessel for a time and at a temperature to produce cured polymer having a pre-selected melt flow range. Preferably, preheating is carried out continuously with the heated polymer delivered to alternative curing vessels wherein the curing is carried out batch wise.

REFERENCES:
patent: 3229022 (1966-01-01), Feder
patent: 3472491 (1969-10-01), Feder
patent: 3524835 (1970-08-01), Edmonds, Jr. et al.
patent: 3717620 (1973-02-01), Rohlfing
patent: 3793256 (1974-02-01), Scoggin
patent: 4025480 (1977-05-01), Larsen

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