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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 9255163 B1

PDFFull Text
Date of Patent:
Feb. 09, 2016

Filed:

Jan. 30, 2013

Dispersed phase polymerization of halogenated vinyl monomers in the presence of live reactive stabilizers

Applicant:

Rhodia Operations, Paris, FR;

Inventors:

Mathias Destarac, Toulouse, FR;

James Wilson, Coye la Foret, FR;

Assignee:

Rhodia Operations, Paris, FR;

Attorney:

Osha • Liang LLP

Primary Examiner:

William Cheung

Int. Cl.
CPC ...
C08F 2/00 (2006.01); C08F 12/20 (2006.01); C08F 14/18 (2006.01); C08F 14/04 (2006.01); C08F 14/06 (2006.01); C08L 53/00 (2006.01); C08F 259/04 (2006.01); C08F 14/08 (2006.01); C08F 293/00 (2006.01); C09D 153/00 (2006.01); C09J 153/00 (2006.01); C08F 2/20 (2006.01); C08F 214/08 (2006.01); C08F 2/38 (2006.01); C08F 214/22 (2006.01); C08L 27/08 (2006.01);
U.S. Cl.
CPC ...
C08F 14/08 (2013.01); C08F 2/20 (2013.01); C08F 2/38 (2013.01); C08F 214/08 (2013.01); C08F 214/22 (2013.01); C08F 214/225 (2013.01); C08F 293/005 (2013.01); C08L 27/08 (2013.01); C09D 153/00 (2013.01); C09J 153/00 (2013.01); C08F 2438/03 (2013.01);
Abstract

The present invention concerns a method for the dispersed phase polymerization of halogenated vinyl compounds, having the formula RRC═CXX, where: X═F or CI, X═H, F or CI, each of Rand R, separately represents: —H, CI, F; or—an alkyl group, preferably chlorinated and/or fluorinated, and more advantageously perchlorinated or perfluorinated, comprising a step (E1) wherein said monomers are introduced into an aqueous phase together with—at least one source of free radicals; and—at least one reactive stabilizer comprising a polymer chain and a thiocarbonylthio-S group (C═S)—, said polymer chain comprising non-(N vinyl lactam)monomer units.

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