Poly(arylene sulfide sulfone) polymer containing ether groups

Details Poly(arylene sulfide sulfone) polymer containing ether groups Poly(arylene sulfide sulfone) polymer containing ether groups

1990-02-28

1992-08-11

Kight, III, John

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

528126, 528171, 528174, C08G 2300, C08L 8104

Patent

active

051380196

ABSTRACT:
A two-step process to make a poly(arylene sulfide sulfone) polymer containing ether groups having high molecular weights is described. In the first step an aromatic diphenol, a dihaloaromatic sulfone, a polar organic compound and an alkali metal base are reacted at an elevated temperature. During the first step the reactor is vented. Subsequently, a sulfur source is added to form a poly(arylene sulfide sulfone) polymer containing ether groups. An alkali metal carboxylate is also present in the second step. The polymers prepared by the invention method exhibit higher inherent viscosities, indicating higher molecular weight.

REFERENCES:
patent: 4016145 (1977-04-01), Campbell
patent: 4108837 (1978-08-01), Johnson et al.
patent: 4175175 (1979-11-01), Johnson et al.
patent: 4808694 (1989-02-01), Edmonds et al.

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