Polycaprolactone-epoxide adducts and coating compositions thereo

Details Polycaprolactone-epoxide adducts and coating compositions thereo Polycaprolactone-epoxide adducts and coating compositions thereo

1976-05-26

1978-04-25

Anderson, Harold D.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260 292EP, 260 292E, 260 783R, 560180, C08G 6376, C08G 6302, C08L 6704

Patent

active

040862941

ABSTRACT:
Water insoluble polycaprolactone-epoxide adducts are produced comprising the reaction product of a polycaprolactone polyol, a diepoxide and an anhydride of a polycarboxylic acid. The polycaprolactone polyol reacted with the diepoxide and the anhydride of the polycarboxylic acid has at least two hydroxyl groups in the molecule, a hydroxyl number of from about 15 to about 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 polycaprolactone-epoxide adducts on reaction with an inorganic or organic base produce water soluble, carboxyl modifier polycarprolactone-epoxide 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.

REFERENCES:
patent: 3408421 (1968-10-01), Kurka
patent: 3576903 (1971-04-01), Groff
patent: 3723569 (1973-03-01), Hoeschle
patent: 3896303 (1975-07-01), Gerkin et al.
Noshay et al., "Epoxy/Modifier Block Copolymers", J. Poly. Sci.; Poly. Chem. 12 (3), 689-705 (1974).

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