Process for production of high to ultra-high molecular weight li

Details Process for production of high to ultra-high molecular weight li Process for production of high to ultra-high molecular weight li

1985-06-18

1987-02-24

Marquis, Melvyn I.

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

Synthetic resins

From sulfur-containing reactant

525537, C08G 7514

Patent

active

046458263

ABSTRACT:
By maintaining an arylenesulfide prepolymer with a melt viscosity of 5 to 3,000 poise at a temperature of 245.degree. to 290.degree. C. under a liquid-liquid two-phase separated state in a solvent for 1 to 50 hours, the molecular weight of said prepolymer is increased to a high to ultra-high value while the linearity of the polymer is retained.

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