Patent · US Expired

Polyacrylate resin solutions having improved color number, and their use in coating compositions

US5916938A · kind A · utility

3Cited by

5References

16Claims

0Family size

Assignee

BASF COATINGS GMBH · DE

Inventors

Michael Brunnemann · Munster, DE
Heinz-Peter Rink · Hachenburg, DE
Harald Borgholte · Munster, DE
Werner-Alfons Jung · Ascheberg, DE
Peter Hoffmann · Senden, DE

Key dates

Filing date	Jan 15, 1997
Grant date	Jun 29, 1999
Priority date	—
Expiry date	Jan 15, 2017

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08J2333/04
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

The present invention relates to a solution of a polyacrylate resin in one or more organic solvents, containing one or more phosphites, characterized in that the solution contains from 0.05 to 1.0% by weight, based on the solids content of the acrylate resin solution, of one or more phosphites and in that the phosphite has been added, either partially or entirely, after the polymerization reaction, at a temperature below the polymerization temperature. The present invention further relates to coating compositions which contain these polyacrylate resin solutions, their use in processes for producing a multilayer protective and/or decorative coating on a substrate surface, and the use of the coating compositions in the automotive refinishing sector.

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