Patent · US Expired

Assistants for the preparation of pigment pastes and high-concentration, low viscosity pigment pastes

US4373964A · kind A · utility

3Cited by

1References

7Claims

0Family size

Assignee

Henkel Kommanditgesellschaft auf Aktien · DE

Inventors

Heinrich Linden · Hilden, DE
Hans Bornmann · Düsseldorf, DE
Wolfgang Gress · Wuppertal, DE
Bernd Wegemund · Haan, DE

Key dates

Filing date	Aug 7, 1981
Grant date	Feb 15, 1983
Priority date	—
Expiry date	Aug 7, 2001

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC09D17/002
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

In the process for the preparation of high concentration, low-viscosity liquid pigment pastes comprising mixing pigments, a substantially non-volatile liquid organic media, a suspension assistant, and, optionally, fillers, the improvement consisting of using acidic reaction products of the reaction of: PA0 (A) unsaturated dicarboxylic acid compounds, and PA0 (B) an unsaturated ester of a dicarboxylic acid, which reaction product is produced by heating said component A and said component B in a weight ratio of 1:7 to 1:35 for from 1 to 25 hours at a temperature in the range of 200.degree. to 250.degree., as said suspension assistant; as well as the high concentration, low-viscosity pigment pastes and solutions of said acidic reaction products in organic liquid media.

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