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:
Aug. 05, 1980
Filed:
Mar. 22, 1979
Applicant:
Inventor:
Rudolph H Boeckeler, Grafton, WI (US);
Assignee:
Freeman Chemical Corporation, Port Washington, WI (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C08G / ;
U.S. Cl.
CPC ...
528115 ; 20415911 ; 20415922 ; 260 / ; 528112 ; 528220 ;
Abstract
A film-forming polymerizable resin is produced from combining acrylic acid, the diglycidyl ether of N-butyl diol and 3,3',4,4'-benzophenone tetracarboxylic dianhydride (BTDA). The diglycidyl ether of N-butyl diol is combined with BTDA and sufficient acrylic acid to combine with unreacted epoxide groups. The BTDA constitutes 2 to 10 percent by weight of the three ingredients. The ingredients are heated to a low acid number where the epoxy equivalent of the mixture is greater than 3,500. The resulting film-forming resin can be pigmented and can be cured in the presence of ultraviolet radiation.