Invention Grant
- Patent Title: Continuous esterification and/or amidification method, without organic solvent, of an acid homopolymer or copolymer
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Application No.: US15516733Application Date: 2015-12-07
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Publication No.: US10207446B2Publication Date: 2019-02-19
- Inventor: Jean-Marc Suau , David Platel , Clementine Champagne , Yves Matter
- Applicant: COATEX
- Applicant Address: FR Genay
- Assignee: COATEX
- Current Assignee: COATEX
- Current Assignee Address: FR Genay
- Agency: Oblon, McClelland, Maier & Neustadt, L.L.P.
- Priority: FR1462027 20141208
- International Application: PCT/FR2015/053349 WO 20151207
- International Announcement: WO2016/092190 WO 20160616
- Main IPC: C08F8/14
- IPC: C08F8/14 ; C08F8/32 ; C08F265/02 ; B29C47/80 ; C04B24/26 ; C08G81/02 ; C08L71/02 ; C04B28/04 ; B29C47/40 ; B29C47/92 ; C08K5/18 ; C08L33/02 ; B29B7/38 ; C04B103/32 ; C04B103/00 ; C04B103/30 ; C04B103/40
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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