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:
Mar. 08, 1988
Filed:
Oct. 14, 1981
Reinhold Deubel, Bad Soden am Taunus, DE;
Christa Uhde nee Schilling, Kriftel, DE;
Werner Marx, Bad Soden am Taunus, DE;
Hoechst Aktiengesellschaft, Frankfurt am Main, DE;
Abstract
Easily dispersible dust-free pigment granules of high tinctorial strength are obtained by adding to the aqueous suspension of a finely divided pigment, an alkaline solution of from 25 to 90 weight percent based on the weight of the granules obtained, of colophony or a colophony derivative, acidifying the mixture, subjecting it to a flush process while stirring and heating to a temperature, above the softening point of the resin, up to 100.degree. C. and isolatng the granules obtained. The granules are particularly suitable for preparing printing inks which are distinguished by a very high tinctorial strength, a good transparency and a low viscosity.