Polycaprolactone derivatives and coating compositions thereof
First Claim
1. A water insoluble adduct comprising the reaction product of a polycaprolactone polyol and an intramolecular anhydride of a polycarboxylic acid, wherein said polycaprolactone polyol has at least two hydroxyl groups in the molecule, a hydroxyl number of from 15 to 600 and an average molecular weight of from 290 to about 6,000, and wherein said anhydride has at least one intramolecular carboxylic anhydride group.
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Accused Products
Abstract
Water insoluble adducts are produced comprising the reaction product of a polycaprolactone polyol and an anhydride of a polycarboxylic acid. The polycaprolactone polyol reacted with the anhydride of the polycarboxylic acid has an average of at least two hydroxyl groups in the molecule, a hydroxyl number of from about 15 to 600 and an average molecular weight of from about 290 to about 6,000. The carboxylic acid anhydride has at least one intramolecular carboxylic anhydride group. These water insoluble adducts on reaction with an inorganic or organic base produce water soluble, carboxyl modified oligomer addition reaction products which are eminently suitable for the production of aqueous coatings compositions. Exceptionally good coatings compositions are obtained when a crosslinker is present in the coating composition.
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Citations
75 Claims
- 1. A water insoluble adduct comprising the reaction product of a polycaprolactone polyol and an intramolecular anhydride of a polycarboxylic acid, wherein said polycaprolactone polyol has at least two hydroxyl groups in the molecule, a hydroxyl number of from 15 to 600 and an average molecular weight of from 290 to about 6,000, and wherein said anhydride has at least one intramolecular carboxylic anhydride group.
- 26. A water soluble composition comprising the adduct reaction product of a polycaprolactone polyol and an intramolecular anhydride of a polycarboxylic acid, wherein said polycaprolactone polyol has at least two hydroxyl groups in the molecule, a hydroxyl number of from 15 to 600 and an average molecular weight of from 290 to about 6,000, and wherein said anhydride has at least one intramolecular carboxylic anhydride group and an inorganic or organic base in an amount sufficient to neutralize the free carboxyl groups of said adduct.
Specification