Low VOC non-aqueous dispersion coatings
OwnerMatthew V. Croyle, Joseph L. McJunkins +2inventors
InventorsMatthew V. Croyle, Joseph L. McJunkins, Madhukar Rao, Richard F. Tomko
Life of this patent
Estimating the term…
Abstract
A non-aqueous dispersion (NAD) resin from natural oils having solids content of greater than 90%, and more preferably, greater than 95%, fast cure, low VOC, and low bake temperatures, and wherein the inclusion of multifunctional isocyanates provide faster dry times and harder films.
Claims17
A non-aqueous dispersion which is formed in an alkyd medium by reactions comprising free radical polymerization of:
- (i) an alkyd formed from an acidolysis reaction product of a triglyceride oil with a trifunctional carboxylic acid or trifunctional anhydride, wherein the acidolysis reaction product is further reacted with a multi-functional alcohol;
- (ii) at least one hydroxy-functional monomer;
- (iii) at least one monomer capable of copolymerizing with the hydroxy-functional monomer by a free radical addition reaction mechanism;
- wherein the alkyd and a natural oil are used as a polymerization medium for the polymerizable monomers;
- wherein the non-aqueous dispersion has a non-volatile materials content of greater than 90%.
A non-aqueous dispersion obtained by polymerizing under free radical addition polymerization conditions, in a polymerization medium comprising an alkyd and optionally a natural oil, a polymerization mixture comprising:
- (i) at least one hydroxy-functional unsaturated monomer;
- and
- (ii) at least one unsaturated monomer capable of copolymerizing with the hydroxy-functional monomer;
- and wherein the alkyd is formed from an acidolysis reaction product of a triglyceride oil with a trifunctional carboxylic acid or trifunctional anhydride, wherein the acidolysis reaction product is further reacted with a multifunctional alcohol.
A coating composition comprising:
- (a) a non-aqueous dispersion which is formed in an alkyd medium by reactions comprising free radical polymerization of:
- (i) an alkyd formed from an acidolysis reaction product of a triglyceride oil with a trifunctional carboxylic acid or trifunctional anhydride, wherein the acidolysis reaction product is further reacted with a multi-functional alcohol;
- (ii) at least one hydroxy-functional monomer;
- (iii) at least one monomer capable of copolymerizing with the hydroxy-functional monomer by a free radical addition reaction mechanism;
- wherein the alkyd and a natural oil are used as a polymerization medium for the polymerizable monomers;
- and wherein the non-aqueous dispersion has a non-volatile materials content of greater than 90%.
An alkyd comprising an acidolysis reaction product of a triglyceride oil with a trifunctional carboxylic acid or trifunctional anhydride, wherein the acidolysis reaction product is further reacted with a multi-functional alcohol.
Dependencies are inferred from the claim text.