US Patent 8013081 Method for preparing polymer particles

Patent 8013081 was granted and assigned to Valspar on September, 2011 by the United States Patent and Trademark Office.

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Patent

Patent attributes

Current Assignee

Valspar

Patent Jurisdiction

United States Patent and Trademark Office

Patent Number

80130810

Patent Inventor Names

Archie W. Garner0

Martin Peter Joseph Heuts0

Date of Patent

September 6, 2011

Patent Application Number

120839950

Date Filed

October 13, 2006

Patent Primary Examiner

‌

Kelechi C. Egwim

Patent abstract

A polymer particle (10) useful for opacifying includes a polymer core (12) and a polymer sheath (16) surrounding the polymer core (12). The polymer core (12) is produced by polymerizing the polymer sheath (16) around the polymer core (12) in an emulsion. After at least a portion of the polymer core (12) is formed, a non-homopolymerizing monomer is added to the emulsion.

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