The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 01, 2018
Filed:
Jul. 21, 2016
Dow Global Technologies Llc, Midland, MI (US);
The Regents of the University of California, Oakland, CA (US);
Rohm and Haas Company, Philadelphia, PA (US);
Joseph Jankolovits, Berkeley, CA (US);
Alexander Katz, Richmond, CA (US);
James C. Bohling, Collegeville, PA (US);
Clayton J. Radke, El Cerrito, CA (US);
Antony K. Van Dyk, Collegeville, PA (US);
John A. Roper, III, Midland, MI (US);
The Regents of the University of California, Oakland, CA (US);
Dow Global Technologies LLC, Midland, MI (US);
Rohm and Haas Company, Philadelphia, PA (US);
Abstract
The present invention relates to a composition comprising a) a stable aqueous dispersion of inorganic pigment particles hydrophobically modified with covalently bonded polysiloxane or silyl groups; and b) a polymeric anionic dispersant; wherein the hydrophobically modified inorganic pigment particles have an average particle size in the range of from 200 nm to 10 μm, and the solids content of the hydrophobically modified inorganic pigment particles is from 10 to 80 weight percent, based on the weight of inorganic pigment particles and water. The composition of the present invention provides a way to improve water resistance in coatings formulations.