Patent · US Expired

Less abrasive pigment or printing ink, and method of reducing abrasion caused by pigments and printing inks

US4462832A · kind A · utility

5Cited by

9References

3Claims

0Family size

Assignee

BASF SE

Inventors

Werner Jettmar · Weiden am See, AT
Hans Olschner · Weinheim, DE
Helmut Junge

Key dates

Filing date	Nov 27, 1981
Grant date	Jul 31, 1984
Priority date	—
Expiry date	Nov 27, 2001

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC09D11/03
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

The abrasiveness of a pigment or printing ink is reduced by incorporation of one or more finely divided substances which are insoluble in printing inks and have a Mohs hardness of from 4.5 to 8, suitable compounds being iron powder, compounds of iron, zirconium, silicon and magnesium, aluminum silicates, oxides of manganese, tin and cerium, or mixtures of these. The printing inks obtained cause substantially less, or virtually no, abrasion of gravure printing cylinders.

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