Patent · US Expired

Pigment preparations; process for their manufacture and their use

US4469516A · kind A · utility

7Cited by

3References

14Claims

0Family size

Assignee

Hoechst GmbH · DE

Inventors

Manfred Schneider · Lichtenfels, DE
Reinhold Deubel · Bad Soden am Taunus, DE
Rainer Schunck · Bad Soden am Taunus, DE

Key dates

Filing date	Dec 16, 1982
Grant date	Sep 4, 1984
Priority date	—
Expiry date	Dec 16, 2002

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/31964
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

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.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.