Title: Water-soluble coating composition and method for making same

Abstract: A method is described for preparation of an adduct product for use as a binder medium for paints to be applied by electrodeposition. This product is the adduct resulting from the solution of a solid polycycloalkadiene polymer having a molecular weight of 700-800 in a liquid polyalkadiene polymer of 500-5000 molecular weight after the initiation of the adduct formation reaction by the addition of an unsaturated polycarboxylic acid or its anhydride. The adduct is formed by adding the acid or anhydride to the solution of the solid polymer in the liquid. The resulting adduct product is suitable for use as a paint binder for electrodeposited paints when diluted with water. The paint composition may be formed by mixing of pigments into the binder and then suspending the mixture in water.

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Inventors: Schein, Charles
Le Minez, Jean-Jacques (R, UE)

Application Number: 446310
Filing Date: 1974-02-27
Publication_date: 1976-03-09
Assignee:
Primary Class(es): 524/532 204/493, 524/531, 524/901, 525/285, 525/297
Other Classes:
US Patent Ref:

3240762	Mar, 1966	Wilks et al.	260/78.
3518213	Jun, 1970	Miyoshi et al.	260/22.
3689446	Dec, 1969	Furuya et al.	260/23.
3766215	Oct, 1973	Hesse et al.	260/346.

Other Refs:
Primary Examiner: Kight, III, John
Assistant Examiner:
Attorney: Burns; Robert E., Lobato; Emmanuel J., Adams; Bruce L.