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:
Jan. 17, 2017
Filed:
Dec. 17, 2013
Applicant:
Akzo Nobel Coatings International B.v., Arnhem, NL;
Inventors:
Neal St. John Williams, Berkshire, GB;
Stephen Arthur Wheeler, Berkshire, GB;
Robert David Bradley, Berkshire, GB;
Assignee:
AKZO NOBEL COATINGS INTERNATIONAL B.V., Arnhem, NL;
Primary Examiner:
Int. Cl.
CPC ...
C09D 133/10 (2006.01); C08K 3/22 (2006.01); C09C 1/36 (2006.01); C09C 3/10 (2006.01); C09D 7/12 (2006.01);
U.S. Cl.
CPC ...
C09D 133/10 (2013.01); C08K 3/22 (2013.01); C09C 1/3676 (2013.01); C09C 3/10 (2013.01); C09D 7/1225 (2013.01); C09D 7/1291 (2013.01); C01P 2004/62 (2013.01); C01P 2006/33 (2013.01); C08K 2003/2241 (2013.01);
Abstract
A method of preparing an aqueous dispersion of opacifying polymer particles containing inorganic pigment particles therein is disclosed. The method yields hollow polymer particles containing pigment particles therein using a non-RAFT emulsion polymerization process by free radical polymerization. The technique is much faster and simpler than known RAFT methods.