Patent · US Expired

Pigment preparations and water-borne effect base coats prepared therewith

US6409814B1 · kind B1 · utility

5Cited by

5References

9Claims

0Family size

Assignee

E.I. DU PONT DE NEMOURS AND COMPANY · US

Inventors

Werner Bosch · Wuppertal, DE
Georg Antonio Cuddemi · Wuppertal, DE
Frank Mueller · Cincinnati, US
Marco Taschner · Sprockhövel, DE

Key dates

Filing date	Apr 19, 2000
Grant date	Jun 25, 2002
Priority date	—
Expiry date	Apr 19, 2020

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC01P2004/84
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

Pigment preparations, having a solid content of 10 to 60 wt-%, obtainable by mixing together, in the presence of at least one water-miscible organic solvent, pigments coated with a silicon-oxygen-matrix with at least one resin having carboxyl groups sufficient to provide an acid value of 10 to 100 mg KOH/g resin and having an number average molecular mass of 500 to 5000, wherein the ratio of pigment to resin is in the range of 1:0.3 to 1:10, can be used for the preparation of water-borne effect base coats with shear stability.

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