CONTINUOUS ESTERIFICATION AND/OR AMIDIFICATION METHOD, WITHOUT ORGANIC SOLVENT, OF AN ACID HOMOPOLYMER OR COPOLYMER
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.
» Number: US2017297255A1 (A1)
» Publication Date: 19/10/2017
» Applicant: COATEX SAS?[FR]
» Inventor: SUAU JEAN-MARC?[FR]; PLATEL DAVID?[FR] (2)
This project has received funding from the European Union's Horizon 2020 research and innovation programme under grant agreement Nº 768737