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. 08, 2018
Filed:
Dec. 06, 2016
Rohm and Haas Company, Philadelphia, PA (US);
Dow Global Technologies Llc, Midland, MI (US);
Jonathan DeRocher, Coopersburg, PA (US);
Kevin J. Henderson, Phoenixville, PA (US);
Lidaris San Miguel Rivera, Midland, MI (US);
Antony K. Van Dyk, Blue Bell, PA (US);
Dow Global Technologies LLC, Midland, unknown;
Rohm and Haas Company, Philadelphia, PA (US);
Abstract
The present invention relates to a stable aqueous pigment dispersion including: an aqueous medium, pigment particles, and from 0.1% to 15%, by weight based on the weight of pigment, of a certain first water-soluble polymer; and 2) a certain second water-soluble polymer; wherein the dispersant comprises a proportion of the first polymer to the second polymer of from 0.1:1 to 10:1 on a solids basis, and the first polymer and the second polymer are miscible in those proportions; and wherein the dispersant is substantially free of structural units of phosphorus acid monomers and their salts. The invention also relates to a method for forming the stable aqueous dispersion and a dry coating formed from the aqueous dispersion. The stable aqueous dispersion is useful, inter alia, for forming certain composite particles.