Welcome Guest to Coatings World    Login || Register
Last Updated Wednesday, October 7 2015

PPG Patents Organic and Inorganic Pigments with Acrylic Resins

Published May 6, 2014
U.S. 8,575,242 B2
PPG has obtained a patent for a method of preparing a water-based paint comprised of melting at least one acrylic resin, wherein the resin has an acidity number higher than 30, an average molecular weight of between 800 and 5000 Da and a melting point of between 75° and 130° C., wetting of the entire surface of pigment with the melted acrylic resin extruding the mixture thus obtained, characterized in that extrusion is performed at an internal temperature of the extruder 5 to 20° C higher than the melting temperature of the resin, cooling thereof and subsequent granulation in the wet state and drying, to obtain a granule composition comprised of pigments coated with the at least one acrylic resin, wherein the granule composition contains from 80 to 20 percent by weight of the pigment and from 80 to 20 percent by weight of the acrylic resin, wherein the granule composition defines granules having a diameter from 1.0 to 2.2 mm, wherein the granule composition is dust-free, and adding the obtained granule composition to a water-based formulation having a basic pH.

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
18F, No.85, Sec. 1, Chung-Shiao E. Rd.
Taipei, Taiwan, 100
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
Micro Powders, Inc.
580 White Plains Rd.
Tarrytown, NY, 10591
View Profile
Siltech Corporation
225 Wicksteed Avenue
Toronto, ON, M4H 1G5
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
Houchi Chemical Co., Ltd
No.56, Fu Chow Street
Taipei, Taipei, 100
View Profile
Follow Coatings World On