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:
Apr. 03, 1979
Filed:
Feb. 21, 1978
Edward T Sabourin, Allison Park, PA (US);
Walter P Barie, Jr, Glenshaw, PA (US);
Gulf Research & Development Company, Pittsburgh, PA (US);
Abstract
A new composition capable of being cured to a solid resin highly resistant to boiling acetone which comprises: (a) a 1,2-epoxy resin containing on the average more than one 1,2-epoxy group per molecule; (b) a residue remaining from the process wherein cumene (C) is reacted with maleic anhydride (MA) to obtain a reaction product containing dimethylbenzyl succinic anhydride (DMBSA), 5-phenyl-5-methylhexane-1,2,3,4-tetracarboxylic acid dianhydride (PMTD) and addition products of C and MA containing more than two anhydride groups per molecule (AP) and wherein a sufficient amount of said DMBSA is removed from said reaction product to give a residue containing a maximum of 25 weight percent DMBSA; and (c) an accelerator.