Patent · US Expired

Surface coating binders which are self-crosslinking when heated, their preparation and their use

US4542173A · kind A · utility

18Cited by

2References

5Claims

0Family size

Assignee

BASF SE

Inventors

Eberhard Schupp · Schwetzingen, DE
Werner Loch · Erpolzheim, DE
Rolf Osterloh · Lechenich, DE
Klaas Ahlers · Munster, DE

Key dates

Filing date	Oct 31, 1983
Grant date	Sep 17, 1985
Priority date	—
Expiry date	Oct 31, 2003

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S524/901
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

The present invention relates to surface coating binders which are self-crosslinking when heated and are based on resin-like polyadducts, polycondensates or polymers. These binders have a mean molecular weight M.sub.n of from 500 to 10,000 and contain, on average per molecule, at least two groups of the general formula ##STR1## wherein R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are identical or different and are each hydrogen or a methyl or ethyl radical, and additionally contain hydroxyl and/or primary and/or secondary amino groups and may or may not contain tertiary amino groups. They can be prepared by reacting appropriate resins containing primary amino groups with cyclic carbonates, and can be used, in solution in an organic solvent, as baking finishes, as well as for the preparation of cathodic electrocoating finishes.

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