Binders for cathodic electrocoating which contain non-tertiary b

Details Binders for cathodic electrocoating which contain non-tertiary b Binders for cathodic electrocoating which contain non-tertiary b

1985-06-13

1988-01-26

Lieberman, Allan M.

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

Synthetic resins

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

525138, 525428, C08L 6114, C08L 6134, C08L 6100, C08L 3308

Patent

active

047217588

ABSTRACT:
The present invention relates to binders for cathodic electrocoating. These binders contain non-tertiary basic amino groups in addition to phenolic Mannich bases and consist of a mixture or precondensate of a polymer, polycondensate or polyadduct which has a mean molecular weight of 800 to 8,000 and a content of basic, primary and/or secondary amino groups of 0.8 to 8 equivalents per 1,000 molecular weight units and one or more phenolic Mannich bases prepared from one or more polynuclear polyphenols, formaldehyde or a formaldehyde donor and one or more secondary aliphatic amines, not more than one equivalent of a secondary amine and not more than 2 equivalents of formaldehyde being employed per equivalent of phenol for the preparation of component (B). These binders can be rendered water-dilutable by the addition of an acid and are suitable for the cathodic electrocoating of electrically conductive articles.

REFERENCES:
patent: 3994989 (1976-11-01), Kempter et al.
patent: 4225479 (1980-09-01), Hicks
patent: 4312799 (1982-01-01), Sekmakas et al.
patent: 4369290 (1983-01-01), Evans et al.
patent: 4396732 (1983-08-01), Sekmakas et al.
patent: 4544687 (1985-10-01), Schupp et al.
patent: 4565838 (1986-01-01), Paar et al.

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