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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 10207446 B1

PDFFull Text
Date of Patent:
Feb. 19, 2019

Filed:

Dec. 07, 2015

Continuous esterification and/or amidification method, without organic solvent, of an acid homopolymer or copolymer

Applicant:

Coatex, Genay, FR;

Inventors:

Jean-Marc Suau, Lucenay, FR;

David Platel, Saint Maurice de Gourdans, FR;

Clementine Champagne, Caluire-et-Cuire, FR;

Yves Matter, Quincieux, FR;

Assignee:

COATEX, Genay, FR;

Attorney:

Oblon, McClelland, Maier & Neustadt, L.L.P.

Primary Examiner:

Vu A Nguyen

Int. Cl.
CPC ...
C08F 8/14 (2006.01); C08F 8/32 (2006.01); C08F 265/02 (2006.01); B29C 47/80 (2006.01); C04B 24/26 (2006.01); C08G 81/02 (2006.01); C08L 71/02 (2006.01); C04B 28/04 (2006.01); B29C 47/40 (2006.01); B29C 47/92 (2006.01); C08K 5/18 (2006.01); C08L 33/02 (2006.01); B29B 7/38 (2006.01); C04B 103/32 (2006.01); C04B 103/00 (2006.01); C04B 103/30 (2006.01); C04B 103/40 (2006.01);
U.S. Cl.
CPC ...
B29C 47/807 (2013.01); B29C 47/402 (2013.01); B29C 47/92 (2013.01); C04B 24/2647 (2013.01); C04B 28/04 (2013.01); C08G 81/025 (2013.01); C08K 5/18 (2013.01); C08L 33/02 (2013.01); C08L 71/02 (2013.01); B29B 7/38 (2013.01); B29C 2947/92704 (2013.01); C04B 2103/006 (2013.01); C04B 2103/30 (2013.01); C04B 2103/32 (2013.01); C04B 2103/40 (2013.01); C08G 2261/128 (2013.01); C08L 2205/05 (2013.01);
Abstract

The present invention relates to a continuous process for preparing a comb polymer, without organic solvent, by esterification and/or amidification of an acidic homopolymer or copolymer, which consists in performing the esterification and/or amidification of said homopolymer/copolymer by reaction at elevated temperature in the mixing and transportation zone of a tubular reactor, optionally equipped with a water removal system, in the presence of at least one poly(alkylene glycol) in solid or molten form and of an antioxidant, said esterification and/or amidification taking place at a temperature greater than or equal to 170° C.

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