Self-crosslinking cationic paint binders containing urea groups

Details Self-crosslinking cationic paint binders containing urea groups Self-crosslinking cationic paint binders containing urea groups

1987-12-03

1989-07-04

Pertilla, Theodore E.

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

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

2041817, 523414, 523415, 524901, 525481, 525488, 525528, C08F 4000, C08L 6300

Patent

active

048451703

ABSTRACT:
A process for producing self-crosslinking cationic paint binders, water-dilutable upon protonation, on the basis of urea group carrying reaction products of modified phenols and epoxy resins as well as with the binders produced according to the process and their use in stoving paints, particularly in electrodeposition paints is described. The process is characterized in that either an aminoalkylation product of a phenol and a semi-blocked diisocyanate carrying an average of at least one secondary amino group, or a substituted urea prepared from a semi-blocked diisocyanate and an amine, which is further reacted with formaldehyde and a phenol, are reacted with an epoxy compound. The paints formulated with these products, at stoving temperatures of from 150.degree. to 170.degree. C., give films with excellent corrosion resistance and adhesion.

REFERENCES:
patent: 3994989 (1976-11-01), Kempter et al.
patent: 4086292 (1978-04-01), Kempter et al.
patent: 4134932 (1979-01-01), Kempter et al.
patent: 4310646 (1982-01-01), Kempter et al.
patent: 4393179 (1983-07-01), Hoppe et al.

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