Patent · US Expired

Isocyanatocarboxylic acids, a process for their preparation and their use in coating compositions as cross-linking agents

US5334637A · kind A · utility

11Cited by

12References

7Claims

0Family size

Assignee

BAYER HEALTHCARE LLC · DE

Inventors

Christian Zwiener · Cologne, DE
Rainer Rettig · Amagasaki, JP
Klaus Nachtkamp · Cologne, DE
Josef Pedain · Cologne, DE
Dieter Arlt · Cologne, DE

Key dates

Filing date	Dec 10, 1992
Grant date	Aug 2, 1994
Priority date	—
Expiry date	Dec 10, 2012

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07C2601/14
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

The present invention relates to isocyanatocarboxylic acids containing PA1 a) 1 to 30% by weight of isocyanate groups attached to (cyclo)aliphatic tertiary carbon atoms and PA1 b) 0.5 to 500 milliequivalents, per 100 g of isocyanatocarboxylic acids, of carboxyl groups which may be at least partially present in carboxylate salt form. The present invention also relates to a process for the preparation of these isocyanatocarboxylic acids and to their use as cross-linking agents for aqueous coating compositions.

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