Welcome Guest to Coatings World    Login || Register
Last Updated Tuesday, October 6 2015

DuPont patents low temp curable melamine coating

Published June 5, 2012
U.S. 8,114,481 B2
E.I. du Pont de Nemours and Company has been awarded a patent for a process for producing a coating on a substrate. The process is comprised of the steps of:
(A) mixing components of a coating composition to form a pot mix, wherein the coating composition consists of: i) a crosslinkable component consisting of 15% to 99% weight of total solid weight of the crosslinkable component a polyester having hydroxyl crosslinkable groups and a weight average molecular weight in a range of 1,500 to 100,000, and 1% to 35% weight of total solid weight of the crosslinkable component a melamine having crosslinkable groups selected from an —NH group, a hydroxyl group, or a combination thereof; and ii) a crosslinking component consisting of a polyisocyanate compound having two or more isocyanate groups that react with the crosslinkable groups at temperatures in a range of from 40° F (4° C) to 200° F (93° C); iii) one or more pigments or effect pigments; and iv) one or more additives selected from conductive additives, viscosity adjuster, catalyst, one or more solvents, or a combination thereof; wherein the coating composition is formulated as a primer, or a color matched primer; (B) applying the pot mix over the substrate to form a layer; and (C) curing the layer on the substrate to form the coating.

blog comments powered by Disqus

Receive free Coatings World emails
Sign up now to receive the weekly newsletter, and more!

Enter your email address:
Company Spotlight
Micro Powders, Inc.
580 White Plains Rd.
Tarrytown, NY, 10591
View Profile
AZ Electronic Materials Co., Ltd.
No. 458-6, Sinsing Road Hu Kou Township Hsinchu Country 303, Taiwan
Hsinchu Country, Taiwan, 303
View Profile
18F, No.85, Sec. 1, Chung-Shiao E. Rd.
Taipei, Taiwan, 100
View Profile
Siltech Corporation
225 Wicksteed Avenue
Toronto, ON, M4H 1G5
View Profile
Houchi Chemical Co., Ltd
No.56, Fu Chow Street
Taipei, Taipei, 100
View Profile
Sunin Machine Co., Ltd.
No.96, Chiao Ho Rd ,Chungho Dist
New Taipei City, Taiwan , 235
Taiwan Roc
View Profile
BASF Corporation
100 Campus Drive
Florham Park, NJ, 07932
View Profile
Follow Coatings World On