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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 9725589 B1

PDFFull Text
Date of Patent:
Aug. 08, 2017

Filed:

Dec. 17, 2012

Method of preparing acrylic polymers and products produced thereby

Applicant:

Lubrizol Advanced Materials, Inc., Cleveland, OH (US);

Inventor:

Wei-Yeih Yang, Brecksville, OH (US);

Assignee:

Lubrizol Advanced Materials, Inc., Cleveland, OH (US);

Attorney:

Thoburn T. Dunlap

Primary Examiner:

Ling Choi

Assistant Examiner:

David L Miller

Int. Cl.
CPC ...
C08L 39/06 (2006.01); C08L 33/08 (2006.01); C08L 33/10 (2006.01); C08L 33/12 (2006.01); C08L 33/02 (2006.01); C08F 2/14 (2006.01); C08F 2/08 (2006.01); C08F 226/10 (2006.01); C08F 265/02 (2006.01); C08F 285/00 (2006.01); C08F 222/02 (2006.01); C08F 220/62 (2006.01); C08F 220/04 (2006.01); C08F 220/06 (2006.01); C08F 120/04 (2006.01); C08F 220/02 (2006.01); C08F 120/08 (2006.01); C08F 120/02 (2006.01); C08F 120/06 (2006.01); C08F 122/06 (2006.01); C08F 122/04 (2006.01); C08F 122/02 (2006.01); C08F 271/02 (2006.01);
U.S. Cl.
CPC ...
C08L 39/06 (2013.01); C08F 2/08 (2013.01); C08F 2/14 (2013.01); C08F 226/10 (2013.01); C08F 265/02 (2013.01); C08F 285/00 (2013.01); C08L 33/02 (2013.01); C08L 33/08 (2013.01); C08L 33/10 (2013.01); C08L 33/12 (2013.01); C08F 120/02 (2013.01); C08F 120/04 (2013.01); C08F 120/06 (2013.01); C08F 120/08 (2013.01); C08F 122/02 (2013.01); C08F 122/04 (2013.01); C08F 122/06 (2013.01); C08F 220/02 (2013.01); C08F 220/04 (2013.01); C08F 220/06 (2013.01); C08F 220/62 (2013.01); C08F 222/02 (2013.01); C08F 271/02 (2013.01);
Abstract

A process for preparing a composition by free-radical polymerization of a monomer composition comprising: a) at least one ethylenically unsaturated carboxylic acid containing monomer or anhydride thereof; b) optionally at least one ethylenically unsaturated monomer different from a) but copolymerizable therewith; and c) at least one crosslinking monomer containing at least two ethylenically unsaturated groups. The monomer composition is polymerized in an organic medium having a solubilizing effect on one or more of the monomeric ingredients, but substantially none on the resulting polymer. The polymerization is conducted in the presence of a free radical forming catalyst and at least one steric stabilizing polymer polymerized from a vinyl lactam and a copolymerizable monomer selected from a short chain alkyl ester of (meth)acrylic acid, a long chain alkyl ester of (meth)acrylic acid, and combinations thereof.

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