Self-crosslinking cationic paint binders from amine modified epo

Details Self-crosslinking cationic paint binders from amine modified epo Self-crosslinking cationic paint binders from amine modified epo

1987-06-19

1989-06-06

Kight, John

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

Synthetic resins

From reactant having at least one -n=c=x group as well as...

525504, 523415, C08G 1832, C08G 1858

Patent

active

048372919

ABSTRACT:
Cationic paint binders, water-dilutable upon protonation, which crosslink internally at elevated temperatures are obtained through reaction of beta-hydroxyamines of the general formula- ##STR1## wherein R.sub.1 is a (cyclo)alkyl radical and/or a hydroxyalkyl radical and/or a tertiary amino(cyclo)alkyl radical, or optionally a radical resulting from the reaction of glycidyl groups with a primary-secondary amine or a diprimary amine and R.sub.2 is an aliphatic and/or aromatic radical of a polyepoxy compound, with partially blocked polyisocyanates and subsequent reaction with formaldehyde. In addition to having excellent film properties, the products show particularly favorable characteristics for processing, since they do not exhibit the thixotropy effects normal with such systems. The products are particularly suited for the formulation of cathodically depositable electrodeposition paints.

REFERENCES:
patent: 3326894 (1967-06-01), Enders et al.
patent: 3336247 (1967-08-01), Williams
patent: 3922253 (1975-11-01), Jerabek et al.
patent: 4101486 (1978-06-01), Bosso et al.

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