Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Patent
1982-08-23
1984-07-24
Bleutge, John C.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
525111, 523406, C08L 6300
Patent
active
044618808
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.
The copolymer contains, as copolymerized units, an olefinically unsaturated compound possessing a tertiary amino group, an N-(alk-1-enyl) isocyanate blocked with a CH-, OH- or NH-acidic blocking agent, and an adduct of an epoxy resin based on bisphenol A and epichlorohydrin, andhaving a molecular weight of from 380 to 3,500, with an olefinically unsaturated alcohol of 3 to 20 carbon atoms, and with an olefinically unsaturated carboxylic acid of 3 to 20 carbon atoms, with or without 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 useful, either as a self-crosslinking binder or as a binder which needs an external crosslinking agent, for the cathodic electrocoating of metallic articles.
REFERENCES:
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patent: 3883483 (1975-05-01), Anderson et al.
patent: 3976615 (1976-08-01), Sekmakas
patent: 4085161 (1978-04-01), Sekmakas et al.
patent: 4336346 (1982-06-01), Gimpel et al.
Houben-Weyl, "Methoden der Organischen Chemie", vol. 14/2, (1963), pp. 61-70.
W. Machu "Elektrotauchlackierung", (1974), pp. 155-179.
Gimpel Juergen
Gulbins Erich
Schenck Hans-Uwe
Schwendemann Volker
BASF - Aktiengesellschaft
Bleutge John C.
Carrillo A. L.
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