The Valspar Corporation

The Dexter Corporation

Christian Schmid

Rolf Jung

Louis J Sharp

Martin Lu

Stephen Postle

Hans Widmer

Artemia Jimenez

Paul Bohler

Artemio Jimenez

Raffaele Martinoni

Solid extrusion coating compositions for metal substrates, a method of extrusion coating a metal substrate, and a metal article are disclosed. The extrusion coating composition is a thermoplastic material and comprises: (a) a polyester having a weight average molecular weight of about 10,000 to about 50,000, and optionally, (b) a modifying resin, such as an epoxy resin having an epoxy equivalent weight of about 500 to about 15,000. The extrusion coating composition is applied to a metal substrate in an extrusion process to provide a composition film having a thickness of about 1 to about 40 microns.

Extrusion coating compositions and method

Powder coating compositions for metal substrates, a method of powder coating a metal substrate, and a metal article are disclosed. The powder coating composition is a thermoplastic material and comprises: (a) a first polyester having a weight average molecular weight of about 10,000 to about 80,000 and a Tg of greater than 45&deg; C. to about 100&deg; C., (b) a second polyester having a weight average molecular weight of about 10,000 to about 70,000 and a Tg of about &minus;10&deg; C. to about 45&deg; C., and optionally, (c) a modifying resin, such as an epoxy resin having an epoxy equivalent weight of about 500 to about 15,000, wherein the Tg of the first and second polyesters differ by about 5&deg; C. to about 60&deg; C. The powder coating composition is applied to a metal substrate to provide a composition film having a thickness of about 1 to about 200 microns.

Powder coating compositions and method

Powder coating compositions for metal substrates, a method of powder coating a metal substrate, and a metal article are disclosed. The powder coating composition is a thermoplastic material and comprises: (a) a first polyester having a weight average molecular weight of about 10,000 to about 80,000 and a Tg of greater than 45&deg; C. to about 100&deg; C., (b) a second polyester having a weight average molecular weight of about 10,000 to about 70,000 and a Tg of about &minus;10&deg; C. to about 45&deg; C., and optionally, (c) a modifying resin, such as an epoxy resin having an epoxy equivalent weight of about 500 to about 15,000, wherein the Tg of the first and second polyesters differ by about 5 &deg; C. to about 60 &deg; C. The powder coating composition is applied to a metal substrate to provide a composition film having a thickness of about 1 to about 200 microns.

Powder coating compositions and methods

Solid extrusion coating compositions for metal substrates, a method of extrusion coating a metal substrate, and a metal article are disclosed. The extrusion coating composition is a thermoplastic material and comprises: (a) a polyester having a weight average molecular weight of about 10,000 to about 35,000, and (b) a modifying resin, such as an epoxy resin having an epoxy equivalent weight of about 500 to about 15,000. The extrusion coating composition is applied to a metal substrate in an extrusion process to provide a composition film having a thickness of about 1 to about 40 microns.

A method and apparatus that prevents premature drying of a layer of a water-based coating composition on a substrate are disclosed.

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Jona, Switzerland

Christian Schmid