Patent · US Active

Method of finishing organic pigments

US8123851B2 · kind B2 · utility

0Cited by

8References

11Claims

0Family size

Assignee

BASF SE

Inventors

Joachim Jesse · Bad Dürkheim, DE
Matthias Klueglein · Ludwigshafen, DE
Richard van Gelder · Heerlen, NL
Wolfgang Best · Freinsheim, DE

Key dates

Filing date	Jul 30, 2008
Grant date	Feb 28, 2012
Priority date	—
Expiry date	Feb 24, 2029

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC09D7/41
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

A method of finishing an organic pigment by dry-comminuting said pigment in the presence of a sulfonato-functional condensation product of an arylsulfonic acid and at least one aliphatic aldehyde having 1 to 6 C atoms as crystallization modifier, dispersing the resulting mixture of pigment and crystallization modifier in mineral acid, and swelling the pigment in the presence of the crystallization modifier in mineral acid.

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