Patent Number: 7,101,590

Title: Extrusion coating compositions and method

Abstract: 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.

Inventors: Schmid; Christian (Jona, CH), Jung; Rolf (Meilen, CH), Widmer; Hans (Wolfhausen-Bubikon, CH), Lu; Martin (Mundelein, IL), Jimenez; Artemia (Hanover Park, IL), Sharp; Louis (Libertyville, IL), Postle; Stephen (Lindenhurst, IL)

Assignee: Valspar Corporation

International Classification: B05D 3/02 (20060101)

Expiration Date: 9/05/02018