[化工外语] Low VOC waterborne primer with high film smoothness

smoothness, primer, VOC, Low, film

Low VOC waterborne primer with high film smoothness

Document Type and Number: United States Patent 7297742

Link to this page: http://www.freepatentsonline.com/7297742.html

Abstract:

An aqueous thermosetting primer composition includes a polyurethane polymer, an acrylic polymer polymerized in a wax having crosslinkable functionality, and a crosslinking component that is reactive with the wax and at least one of the polyurethane polymer and the acrylic polymer. The polyurethane polymer has a glass transition temperature of 0° C. or less. The acrylic polymer has a glass transition temperature that is at least about 20° C. higher than the glass transition temperature of polyurethane resin. The invention further provides a composite coating having as a primer layer a cured layer of the primer composition of the invention and having at least one topcoat layer.

Inventors:

Ohrbom, Walter H. (Hartland Township, MI, US)
December, Timothy S. (Rochester Hills, MI, US)
Lanza, Joann (Farmington Hills, MI, US)
Weise, Robert D. (Harper Woods, MI, US)

Application Number: 10/843105

Filing Date: 05/11/2004

Publication Date: 11/20/2007

[ 本帖最后由 kuaiche 于 2008-4-5 22:34 编辑 ]