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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.:

US 10287450 B1

PDFFull Text
Date of Patent:
May. 14, 2019

Filed:

Dec. 04, 2017

Aqueous dispersion of polymer particles with acorn morphology

Applicant:

Rohm and Haas Company, Collegeville, PA (US);

Inventors:

James C. Bohling, Lansdale, PA (US);

Arnold S. Brownell, Lansdale, PA (US);

Andrew Swartz, Fleetwood, PA (US);

Assignee:

Rohm and Haas Company, Philadelphia, PA (US);

Attorney:

Reid S. Willis

Primary Examiner:

Hannah J Pak

Int. Cl.
CPC ...
C08L 33/08 (2006.01); C09D 143/02 (2006.01); C09D 7/40 (2018.01); C09D 125/14 (2006.01); C09D 133/08 (2006.01); C09D 133/12 (2006.01); C08F 265/06 (2006.01); C09D 151/00 (2006.01); C08F 2/22 (2006.01); C08F 212/08 (2006.01); C08F 220/14 (2006.01); C08F 220/18 (2006.01); C08K 3/22 (2006.01); B82Y 30/00 (2011.01); C08F 12/30 (2006.01);
U.S. Cl.
CPC ...
C09D 143/02 (2013.01); C08F 2/22 (2013.01); C08F 265/06 (2013.01); C09D 7/70 (2018.01); C09D 125/14 (2013.01); C09D 133/08 (2013.01); C09D 133/12 (2013.01); C09D 151/003 (2013.01); B82Y 30/00 (2013.01); C08F 12/30 (2013.01); C08F 212/08 (2013.01); C08F 220/14 (2013.01); C08F 2220/1825 (2013.01); C08K 2003/2241 (2013.01); C08L 2207/53 (2013.01);
Abstract

The present invention relates to a composition comprising 1) an aqueous dispersion of polymer particles having a core-shell morphology wherein the core protuberates from the shell and comprises less than 0.09 structural units of a phosphorus acid monomer, based on the weight of the core; and 2) pigment particles with a refractive index in the range of from 2.0 and 3.0, wherein the pigment volume concentration of the pigment particles is at least 11. The composition of the present invention is useful for improving block resistance in coatings applications.

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