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:
Nov. 01, 1988
Filed:
Apr. 14, 1987
Applicant:
Inventors:
Robert E Hefner, Jr, Lake Jackson, TX (US);
Deborah I Haynes, Freeport, TX (US);
Manuel C Tyler, Jr, Angleton, TX (US);
Assignee:
The Dow Chemical Company, Midland, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08F / ; C08L / ;
U.S. Cl.
CPC ...
525463 ; 525523 ;
Abstract
Modified epoxy resins are prepared by the reaction of one or more epoxy resins with polycarbonate resins or oligomers. One or more monoalcohols and/or monophenols can also be used in the modification reaction. The epoxy resins also can be advanced by inclusion of a polyphenol during the reaction. The modified epoxy resins have a chain branching and/or crosslinking due to carbonate bonding of polycarbonate chain scission products to the epoxy resin. The epoxy resins are useful to make powder coatings with enhanced adhesion to metal and resistance to cathodic disbondment.