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:
Feb. 24, 1998
Filed:
Jul. 03, 1996
Michael Alan Masse, Richmond, TX (US);
Kailash Dangayach, Houston, TX (US);
James Robert Erickson, Katy, TX (US);
Shell Oil Company, Houston, TX (US);
Abstract
A process for incorporation of epoxidized polydienes into aromatic epoxy resins which comprises (a) blending the epoxidized polydiene into a curing agent in a ratio of 1:20 to 1:4, (b) reacting the epoxidized polydiene and a curing agent at a temperature of from 100.degree. to 150.degree. C. over a time from 10 to 100 minutes, (c) mixing the pre-reacted epoxidized polydiene and curing agent with the aromatic epoxy resin and accelerator, and (d) curing the aromatic epoxy resin by heating the full mixture of paragraph (c) to a temperature of from 110.degree. to 170.degree. C. for from 2 to 6 hours.