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:
Nov. 30, 2021
Filed:
Jul. 13, 2018
Applicant:
Rohm and Haas Company, Philadelphia, PA (US);
Inventors:
Assignee:
Rohm and Haas Company, Philadelphia, PA (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C08K 3/36 (2006.01); C08F 220/14 (2006.01); C08F 2/26 (2006.01); C08F 2/44 (2006.01); C08F 292/00 (2006.01); C09D 5/00 (2006.01); C09D 133/02 (2006.01); C09D 133/10 (2006.01); C09D 133/12 (2006.01); C09D 151/10 (2006.01);
U.S. Cl.
CPC ...
C08K 3/36 (2013.01); C08F 2/26 (2013.01); C08F 2/44 (2013.01); C08F 220/14 (2013.01); C08F 292/00 (2013.01); C09D 5/00 (2013.01); C09D 133/02 (2013.01); C09D 133/10 (2013.01); C09D 133/12 (2013.01); C09D 151/10 (2013.01); C08L 2201/54 (2013.01);
Abstract
A method of preparing a polymer dispersion comprising (i) contacting an aqueous dispersion of de-ionized acidic colloidal silica particles with a first mixture of monomers to form a combination; (ii) polymerizing such combination at an initial pH of from 2 to 5 to at least 90% in completion; and (iii) adding a second mixture of monomers at a rate substantially equal to the rate of consumption of such second mixture of monomers to continue and complete the polymerization. The present invention further provides a polymer dispersion made from the above method.