Patent · US Expired

Process for the preparation of water-dilutable coating binders and their use

US5494956A · kind A · utility

3Cited by

10References

10Claims

0Family size

Assignee

Vianova Kunstharz, AG · AU

Inventors

Gert Dworak · Graz, AT
Werner Staritzbichler · Graz, AT
Wolfgang Goldner · Heiligenhaus, DE

Key dates

Filing date	Mar 10, 1994
Grant date	Feb 27, 1996
Priority date	—
Expiry date	Mar 10, 2014

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC09D175/04
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

The invention relates to a process for producing water-dilutable varnish binders and their use in manufacturing water-dilutable fillers for automobile paintwork. The binders contain a reaction product, which is dilutable with water after the neutralization of the carboxyl groups, of a polyurethane resin having carboxyl groups and at least one terminally blocked isocyanate group (polycarboxyl component) with a polyester having a hydroxyl group (polyhydroxyl component) and a cross-linking component. Further improvements in the shelf-life of the varnishes can be attained by specially selecting the binder components and special processing steps for the combination thereof.

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