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:
Sep. 04, 1984
Filed:
Dec. 16, 1982
Manfred Schneider, Eppstein, DE;
Reinhold Deubel, Bad Soden am Taunus, DE;
Rainer Schunck, Kelkheim, DE;
Hoechst Aktiengesellschaft, Frankfurt, DE;
Abstract
Aryl-pararosaniline sulfonic acid pigments can be transformed into a pigment preparation having high tinctorial strength and being easily dispersible by dissolving them in aqueous alkali, adding a water-soluble synthetic resin (being a reaction product or mixture of (I) maleic anhydride addition product of an unsaturated fatty acid or fatty acid polyol ester, said addition product being partially esterified with a polyol, and (II) a low-molecular curable and partially etherified aminoplast and optionally an anionic or nonionic surfactant and precipitating the preparation with a mineral acid. These preparations are especially useful for pigmenting printing inks, carbon paper, duplicating papers and typewriter ribbons.