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:
Apr. 01, 2025
Filed:
Aug. 10, 2020
Dow Global Technologies Llc, Midland, MI (US);
Dow Silicones Corporation, Midland, MI (US);
Rohm and Haas Company, Collegeville, PA (US);
Hilda G. Buss, Norristown, PA (US);
Matthew Carter, Bala Cynwyd, PA (US);
Ralph C. Even, Blue Bell, PA (US);
Bryan L. McCulloch, Olympia, WA (US);
Jodi Mecca, Midland, MI (US);
Richard P. Woodworth, North Wales, PA (US);
Fanwen Zeng, Audubon, PA (US);
Rohm and Haas Company, Collegeville, PA (US);
Dow Silicones Corporation, Midland, MI (US);
Abstract
The present invention relates to a method for preparing an aqueous dispersion of acrylate-siloxane copolymer particles as described herein. The polymer particles comprise structural units of an acrylate monomer; an acid monomer; and a siloxane acrylate monomer of formula I: where R, R, R, Y and x are as defined herein. The method provides an efficient way to prepare a high solids content aqueous dispersion of siloxane-acrylate hybrid copolymers with efficient incorporation of siloxane acrylate monomers, low residual monomer, and low generation of unwanted coagulum. The dispersion is useful for forming coatings with improved hydrophobicity, stain resistance, and aesthetic/haptic properties compared with conventional all-acrylic compositions.