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. 11, 1997
Filed:
Feb. 28, 1995
Applicant:
Inventors:
Michael L Gould, Lake Jackson, TX (US);
David A Grilli, Lake Jackson, TX (US);
Marvin L Dettloff, Lake Jackson, TX (US);
Richard A Hickner, Lake Jackson, TX (US);
James A Rabon, West Columbia, TX (US);
Assignee:
The Dow Chemical Company, Midland, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ; C08G / ;
U.S. Cl.
CPC ...
360126 ; 5253297 ; 525404 ; 525445 ; 560 64 ; 560 73 ; 560181 ; 560185 ;
Abstract
A polyanhydride having a molecular weight of no more than about 2000 is useful in a coating composition with a coreactant resin such as an epoxy resin and comprises: (a) a polyvalent organic moiety; (b) a plurality of ester linkages bonded to the polyvalent organic moiety; (c) divalent organic moieties bonded to the ester linkages; and (d) non-cyclic anhydride moleties bonded to the divalent organic moleties.