Surface-coating binders containing blocked isocyanate groups, an

Details Surface-coating binders containing blocked isocyanate groups, an Surface-coating binders containing blocked isocyanate groups, an

1981-04-07

1983-08-16

Lieberman, Paul

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

Synthetic resins

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

523406, 525528, C08L 6300

Patent

active

043992560

ABSTRACT:
Surface-coating binders based on a copolymer which contains tertiary amino groups, blocked isocyanate groups, hydroxyl groups and ether groups and which, due to partial or complete salification with an acid, is water-soluble or water-dispersible.
This copolymer contains, as copolymerized units, one or more olefinically unsaturated compounds possessing a tertiary amino group, an N-(1-alkenyl) isocyanate blocked with a CH--, OH-- or NH-acidic blocking agent, an adduct of an epoxy resin based on bisphenol A and epichlorohydrin, and having a molecular weight of from 380 to 3,500, with an olefinically unsaturated alcohol of 3 to 20 carbon atoms, and one or more other copolymerizable olefinically unsaturated compounds, and has a mean molecular weight of from 1,000 to 20,000.
The novel surface-coating binder is used for the cathodic electrocoating of metallic articles.

REFERENCES:
patent: 3692746 (1972-09-01), Woo
patent: 3883483 (1975-05-01), Anderson
patent: 3930051 (1976-02-01), Anderson
patent: 3976615 (1976-08-01), Sekmakas
patent: 4009133 (1977-02-01), Jones
patent: 4085161 (1978-04-01), Sekmakas
patent: 4150211 (1979-04-01), Muller
patent: 4260716 (1981-04-01), Christenson
Houben-Weyl; "Methoden der organischen Chemie", vol. 14/2 (1963), pp. 61-70.
W. Machu: "Elektrotauchlackierung", (1974), pp. 155-179.

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