Process for the production of polyarylene sulfides with lithium

Details Process for the production of polyarylene sulfides with lithium Process for the production of polyarylene sulfides with lithium

1989-06-12

1992-04-28

Anderson, Harold D.

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

Synthetic resins

From sulfur-containing reactant

528 86, 528271, 528364, C08G 7516

Patent

active

051091100

ABSTRACT:
Polyarylene sulfides are produced by polymerizing a dihalogen aromatic compound with an alkali metal hydrosulfide in the presence of a lithium halide in an organic polar solvent. In this polymerization, an alkali metal hydroxide and/or carbonate is added and a branching agent such as a trihalogen aromatic compound or a halogen aromatic nitro compound is used, if desired.
The polyarylene sulfides have a high molecular weight and a less salt contents and a high degree of whiteness.

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patent: 4025496 (1977-05-01), Anderson et al.
patent: 4038263 (1977-07-01), Edmonds, Jr.
patent: 4038266 (1977-07-01), Marchant et al.
patent: 4039518 (1977-08-01), Campbell
patent: 4071509 (1978-01-01), Edmonds, Jr.
patent: 4373091 (1983-02-01), Edmonds, Jr.
patent: 4810773 (1989-03-01), Ogata et al.
patent: 4837301 (1989-06-01), Glock et al.

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