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US 4,070,349 AGranted
Aromatic sulfide/sulfone polymer production
AssigneePhillips Petroleum Company
InventorRobert W. Campbell
Life of this patent
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Abstract
High molecular weight aromatic sulfide/sulfone polymers are produced by contacting a dihalo aromatic sulfone, an alkali metal sulfide other than lithium sulfide, a heterocyclic amine, and, optionally, an alkali metal carboxylate. Use of at least one heterocyclic amine with or without an alkali metal carboxylate during the contacting results in polymers of high molecular weight having utility as coatings, films, molded objects, fibers, and the like.
Claims10
A process for the production of high molecular weight aromatic sulfide/sulfone polymers which comprises contacting
- a. at least one dihalo aromatic sulfone,
- b. at least one alkali metal sulfide selected from the group consisting of sodium sulfide, potassium sulfide, rubidium sulfide, and cesium sulfide, and
- c. at least one heterocyclic amine represented by a formula selected from ##STR6## where each R' is selected from the group consisting of hydrogen and alkyl radicals, the total number of carbon atoms in each of the heterocyclic amine molecules being up to about 15, under polymerization conditions for a period of time sufficient to form an aromatic sulfide/sulfone polymer.
Dependencies are inferred from the claim text.