Solvent-free shellac coating composition
AssigneeMantrose-Haeuser Co., Inc.
InventorsKatie L. Fontaine, Margaret McWeeney, Stephen A. Santos, Bin Zhong, Paul J. Pothier
Life of this patent
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Abstract
A shellac coating composition for producing a shellac coating on a substrate comprises a fatty acid component, shellac and little or no volatile carrier liquid. Because the fatty acid inhibits the polymerization of the shellac when molten, the composition can be converted into a liquid state for coating purposes by simple heating, thereby eliminating the need for the volatile carrier liquid.
Claims26
A process for providing a shellac coating on a bakery product substrate comprising applying to the bakery product substrate a molten shellac coating composition comprising a fatty acid component and shellac, wherein the weight ratio of the fatty acid component to the shellac is 5:95 to 95:5, wherein the coating composition has been made without dissolving or dispersing the shellac in more than 10 wt. % of a volatile carrier liquid having an equilibrium vapor pressure at 25° C. above 0.02 atm (15.9 torr), this percent being based on the weight of the shellac coating composition as a whole, and further wherein the molten coating composition is formulated in a manner which inhibits polymerization of the shellac when the coating composition is heated to molten form thereby providing a shellac coating on said substrate, wherein the shellac coating composition comprises a total of no more than 25 wt. % of additional ingredients other than the fatty acid component and the shellac, based on the weight of the entire coating composition.
A process for providing a shellac coating on a bakery product substrate comprising
- (a) heating a mixture of a fatty acid component and shellac to transform the mixture from solid to molten form without dissolving or dispersing the mixture in a volatile carrier liquid having an equilibrium vapor pressure at 25° C. above 0.02 atm (15.9 torr),
- (b) applying the molten mixture so formed to the bakery product substrate, thereby forming a molten shellac coating on the substrate, and
- (c) allowing the molten shellac coating to solidify,
- wherein the mixture comprises a total of no more than 25 wt. % of additional ingredients other than the fatty acid component and the shellac, based on the weight of the entire mixture.
A process for providing a shellac coating on a bakery product substrate comprising
- (a) heating a mixture of a fatty acid component and shellac to transform the mixture from solid to molten form without dissolving or dispersing the mixture in more than 10 wt. % of a volatile carrier liquid having an equilibrium vapor pressure at 25° C. above 0.02 atm (15.9 torr), this weight percent being based on the weight of the mixture as a whole,
- (b) applying the molten mixture so formed to the bakery product substrate, thereby forming a molten shellac coating on the substrate, and
- (c) allowing the molten shellac coating to solidify,
- wherein the mixture comprises a total of no more than 25 wt. % of additional ingredients other than the fatty acid component and the shellac, based on the weight of the entire mixture.
Dependencies are inferred from the claim text.