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US 3,943,086 AGranted
Water-soluble coating composition and method for making same
OwnerCharles Schein, Jean-Jacques Le Minezinventors
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OwnerCharles Schein, Jean-Jacques Le Minezinventors
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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.
A method for the preparation of an addition product binder suitable for a water-soluble coating composition capable of being applied by electrodeposition, wherein at least one solid polycycloalkadiene having a ball and ring melting point of from 70.degree. to 100.degree.C and a molecular weight of from 700 to 800 is dissolved in at least one liquid polyalkadiene conjugated polymer of molecular weight from 500 to 5000 by mixing;
An adduct product formed from the reaction initiated by the addition of an ethylenically unsaturated polycarboxylic acid or its anhydride to a solution of a solid polycycloalkadiene polymer of ball and ring melting point of 70.degree.-100.degree.C and molecular weight of 700 to 800, in a liquid polyalkadiene conjugated polymer of 500-5000 molecular weight.
Dependencies are inferred from the claim text.