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:
Oct. 16, 2001
Filed:
Jan. 31, 2000
Karin Golz-Berner, Monaco, MC;
Leonhard Zastrow, Monaco, MC;
Lancaster Group GmbH, Mainz, DE;
Abstract
The invention relates to an aqueous solution or dispersion with high shellac content. The aqueous shellac solution or dispersion is characterized in that it has a pH value of 2 to 4.2, and contains: 1 to 60% wt. shellac; 0.1 to 3% wt. of at least one water-soluble film former; 0.1 to 1% wt. of at least acid-resistant gel former; and water bringing the total to 100% wt. In accordance with the invention, the solution is produced by the following method: particle-shaped shellac is added to an aqueous solution and homogenized by stirring at 10 to 1500 rev/min., at a temperature of 5 to 20° C. The aqueous solution has a pH value of 2 to 4.2 and contains at least one water-soluble film former and at least one acid-resistant gel former. The shellac solution or dispersion can be used in the paint and varnish industry, the food industry and in cosmetics.