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:
Apr. 28, 1987
Filed:
Jun. 03, 1985
Jonathan Seaborne, Corcoran, MN (US);
David C Egberg, Plymouth, MN (US);
General Mills, Inc., Minneapolis, MN (US);
Abstract
Disclosed are edible film coating compositions of low moisture permeability and their methods of preparation. The compositions comprise cross-linked, refined shellac and hydroxypropyl cellulose (HPC) in a weight ratio of 1:0.001 to 1:2. Highly preferred compositions additionally comprise mono- or di-carboxylic acid adducts such as adipic, succinic, lauric, or stearic acids in a weight ratio of acid to combined weight of shellac and cellulose of 1:33 to 1:10. In the preferred method of preparing, the shellac is cross-linked in a dry, molten mixture with the HPC by heating at 130.degree. to 175.degree. C. for 2 to 15 minutes. The coating compound while molten is dissolved in a food grade solvent, applied to a substrate, and dried. The coating compositions are particularly useful as a moisture barrier in composite food articles having phases in contact which differ substantially in water activity. Effective films range from 0.1 to 5 mils in thickness.