Back to results
US 5,633,330 AGranted
Coating composition of non-cyclic polyanhydride and glycidyl oligomer
AssigneeThe Dow Chemical Company
InventorsMichael L. Gould, David A. Grilli, Marvin L. Dettloff, Richard A. Hickner, James A. Rabon
Life of this patent
Estimating the term…
Abstract
A coating composition with a solids content of at least about 65% by weight comprises a polyanhydride having more than one non-cyclic anhydride moiety, a glycidyl groups-containing oligomer, a catalyst and a surfactant or flow-control agent.
Claims9
A curable coating composition comprising organic solvent and:
- (a) a polyanhydride having a molecular weight of no more than about 1,500 that contains:
- (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 moieties bonded to the divalent organic moieties;
- (b) an oligomer containing at least two glycidyl groups and having an epoxy equivalent weight of no more than about 1,500;
- (c) a functional amount of at least one catalyst;
- and
- (d) at least one surfactant or flow-control agent,
- wherein the composition has a solids content of at least about 65 weight percent and wherein the eqivalent ratio of epoxy to anhydride is about from 0.8 to 1.3.
7 more elements
Dependencies are inferred from the claim text.