Crosslinking components for paint binders and process for their

Details Crosslinking components for paint binders and process for their Crosslinking components for paint binders and process for their

1989-07-05

1991-10-22

Kight, III, John

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

528 45, C08G 1828, C08G 1880, C09D16700, C09D17500

Patent

active

050596527

ABSTRACT:
Crosslinking components for paint binders containing hydroxyl groups, tertiary and/or secondary and/or primary amino groups, particularly for cathodically depositable paints, which can be crosslinked by transesterification and/or transamidation and/or transurethanization, containing for each molecule at least 0.5 transesterifiable groups obtained from CH-activated esters and at least 0.5 blocked isocyanate groups. The crosslinking components are produced by partial transesterification of a polyol, preferably a triol, with a CH-activated ester, preferably a malonic acid diester, and subsequent reaction with a partially blocked polyisocyanate. Paint binders containing the crosslinking components cure at low-bake temperatures to provide films with good surface characteristics.

REFERENCES:
patent: 4373081 (1983-02-01), Nachtkamp et al.
patent: 4554188 (1985-11-01), Holubka et al.
patent: 4559383 (1985-12-01), Holubka et al.
patent: 4789696 (1988-12-01), Paar et al.
patent: 4857581 (1989-08-01), Paar et al.
patent: 4906692 (1990-03-01), Plum et al.

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