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:
Jan. 26, 1993
Filed:
Apr. 23, 1991
Applicant:
Inventor:
Theodore L Parker, Walnut Creek, CA (US);
Assignee:
The Dow Chemical Company, Midland, MI (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C08L / ; C08L / ; C08L / ; C08L / ;
U.S. Cl.
CPC ...
525438 ; 525463 ;
Abstract
Thermoformable, thermosettable resins essentially free of secondary alcohol groups are obtained by reaction of oxiranes in active hydrogen-free polyepoxide with carboxylate and/or carbonate groups in active hydrogen-free aryl polyesters, polycarbonates or copolyestercarbonates in the presence of catalytically effective amounts of certain polyorgano phosphonium or phosphine iminium salts.