Hydantoin-polyester coating compositions
AssigneeGeneral Electric Company
InventorsDenis R. Pauze, Donald G. Pucci
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Abstract
The invention relates to polymeric coating compositions which are at least partially soluble in water. Polyesters, polyesterimides, polyesteramides, polyesteramideimides, polyester hydantoins and polyester urethanes are prepared with free carboxyl or carboxylic acid groups. At least part of the carboxylic acid groups are neutralized with amine containing material producing a coating composition which is at least partially soluble in water. The coating compositions are particularly useful as electric insulating coatings or wire enamels which are readily coated on a metallic or other substrate and when cured from coatings having good electrical and physical properties.
Claims15
A coating composition comprising a polyester hydantoin containing free carboxyl groups, at least part of the free carboxyl groups in the polyester moiety being neutralized with a compound selected from the group consisting of an amine, ammonia, and ammonium hydroxide.
A coating composition comprising a polyester hydantoin containing free carboxyl groups, at least part of the free carboxyl groups in the polyester moiety being neutralized with an amine.
The process of preparing a water soluble polyester containing coating composition which comprises reacting a polybasic acid material, polyhydric alcohol having at least three hydroxyl groups, diol, and a hydantoin group containing material selected from the group consisting of hydantoin group containing moiety having two or more hydroxyl groups, hydantoin group containing moiety having two or more carboxylic acid groups, and hydantoin group containing moiety having at least two carboxylic acid groups and at least two hydroxyl groups to form a polyester hydantoin having an acid number of about 20 to 60 and further reacting said polyester hydantoin with a compound selected from the group consisting of an amine, ammonia and ammonium hydroxide to neutralize at least part of the free carboxyl groups.
Dependencies are inferred from the claim text.