The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 20, 1978
Filed:
May. 27, 1975
Applicant:
Inventor:
James T Edmonds, Jr, Bartlesville, OK (US);
Assignee:
Phillips Petroleum Company, Bartlesville, OK (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08F / ;
U.S. Cl.
CPC ...
260 791 ; 260 79 ;
Abstract
A method is provided for producing a p-phenylene sulfide polymer by contacting at least one p-dihalobenzene, at least one alkali metal sulfide, at least one alkali metal carboxylate, at least one organic amide and at least one alkali metal hydroxide to form a composition at polymerization conditions. The use of an alkali metal hydroxide in addition to the other compounds used in the reaction mixture results in p-phenylene sulfide polymers of higher molecular weight than produced without the alkali metal hydroxide, as evidenced by lower melt flow of the polymer than produced by the compared methods.