Ppg Industries Ohio, Inc.

The Pittsburgh Paints Co.

Theodore Frank Novitsky, Jr

Edward Richard Millero, Jr

Scott J Moravek

John W Burgman

Michael G Olah

Daniel Connor

William H Retsch

Matthew William Skinner

Peter Alan Lukus

A coating system includes as separate components: (a) a first tintable base composition including: a first resin, a first liquid carrier, and a first pigment package; and (b) a second tintable base composition including: a second resin, a second liquid carrier, and optionally a second pigment package. The pigment volume concentration and/or the sheen and/or the gloss of the first tintable base composition and the second tintable base composition are substantially different. The components (a) and (b) are not mixed together.

Coating system

There is described a method for the production of a functional polyester having functional group X. The method comprises the step of melt blending a composition comprising (i) a high number average molecular weight (Mn) polyester having a Mn of ≥6,000 Da; and (ii) a functional compound comprising functional group Y which may be the same as functional group X or be different to functional group X but be operable to form functional group X in the functional polyester. The composition is melt blended such that the high Mn polyester and the functional compound react to produce the functional polyester. The high Mn polyester has a Mn that is higher than the Mn of the functional compound. The present invention extends to functional polyesters produced by the method; aqueous, solventborne and powder coating compositions containing the functional polyester, and articles coated with the said coating compositions.

Functional polyester and method of producing the same

Growing community of inventors

Butler, PA, United States of America

Theodore Frank Novitsky, Jr