Title: Resinous compositions curable through a transesterification curing mechanism

Abstract: Coating compositions comprising a polymeric polyol with a polyester crosslinking agent having at least two beta- and/or gamma-ester ester groups per molecule are disclosed. The compositions, when applied to a substrate and cured in the presence of a transesterification catalyst, give solvent-resistant coatings.

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Inventors: Valko, Joseph T. (Gibsonia, PA)

Application Number: 06/288240
Filing Date: 1981-07-29
Publication_date: 1983-12-27
Assignee: PPG INDUSTRIES INC (US)

Primary Class(es): 523/414 525/176, 525/444, 204/501, 204/500, 525/533, 523/402,
Other Classes: C08G63/12; C09D163/00; C09D167/00; C09D201/06; C08G63/00; C09D201/02; C08L63/02
US Patent Ref:

3937679	February, 1976	Bosso et al.	260/29.3	Electrodepositable compositions
4101486	July, 1978	Bosso et al.	260/29.2TN	Cationic electrodepositable compositions
4307153	December, 1981	Bernelin et al.	428/413	Cross-linkable, saturated polyester coating compositions
4332711	June, 1982	Kooymans et al.	523/402	Thermosetting resinous binder compositions, their preparation and use as coating materials

Other Refs: EP0008262EP0012463EP0040867GB739701GB1283653GB1525331GB1531046

February, 1980	SATURATED CROSSLINKABLE COMPOSITIONS FOR POWDER COATINGS, PREPARATION OF PAINTS CONTAINING THEM AND
June, 1980	Thermosetting resinous binder compositions, their preparation, and use as coating materials.
December, 1981	THERMOSETTING RESINOUS BINDER COMPOSITIONS, THEIR PREPARATION, AND USE AS COATING MATERIALS
November, 1955
August, 1972
September, 1978
November, 1978

Other References: J. Prakt. Chem. 312, 1970, pp. 660-668, "On the Chemistry of Metal-Ion Catalyzed Transesterification Reactions" by H. Zimmermann and E. Schaaf.

Primary Examiner: Pertilla, Theodore E.
Assistant Examiner:
Attorney: Uhl, William J.

Claims:

I claim: