METHOD FOR PRODUCING AN EMULSION OF ALKENYL SUCCINIC ANHYDRIDE (ASA) IN AN AQUEOUS SOLUTION OF A CATIONIC AMYLACEOUS SUBSTANCE, RESULTING EMULSION, AND USE THEREOF

A method for producing an emulsion of ASA in an aqueous solution of a cationic amylaceous substance, without having to use a loop for recirculating the product at the emulsification unit. The produced emulsion is characterized by both a fine and monodisperse particle size, and no overheating is involved that could lead to negative phenomena of hydrolyzing the ASA. The corresponding production device is also described. 2. The process for manufacturing an emulsion of ASA in an aqueous solution of cationic starchy material as claimed in claim 1 , characterized in that: a unit (a′) for storing an aqueous solution of cationic starchy material to perform step a),', 'a unit (b′) for mixing ASA and the aqueous solution of cationic starchy material, connected to the unit (a′), to perform step b),', 'a unit (c′) for emulsifying the mixture of ASA and of the aqueous solution of cationic starchy material, connected to the unit (b′), to perform step c),, 'said process is performed in a device consisting ofsaid device not containing a recirculation loop in the emulsification unit (c′).3. The process as claimed in claim 1 , characterized in that the aqueous solution of cationic starchy material has a content of fixed nitrogen of less than 3.5% claim 1 , preferentially between 0.3% and 3.5% and very preferentially between 0.7% and 2% by dry weight of nitrogen relative to the total dry weight of cationic starchy material.4. The process as claimed in claim 1 , characterized in that the ASA is a product of synthetic origin.5. The process as claimed in claim 1 , characterized in that the cationic starchy material is modified by means of an operation chosen from hydrolysis claim 1 , chemical and physical claim 1 , mechanical claim 1 , thermomechanical or thermal transformations.7. The process as claimed in claim 2 , characterized in that the aqueous solution of cationic starchy material has a content of fixed nitrogen of less than 3.5% claim 2 , preferentially between 0.3% and 3.5% and ...

PROCESS FOR PRODUCING SUCCINIC ALKENYL ANHYDRIDE (ASA) EMULSION IN AQUEOUS SOLUTION OF CATIONIC AMYLACEOUS MATERIAL, EMULSION OBTAINED AND USE THEREOF

Method for producing an emulsion of alkenyl succinic anhydride (ASA) in an aqueous solution of a cationic amylaceous substance, resulting emulsion, and use thereof

A method for producing an emulsion of ASA in an aqueous solution of a cationic amylaceous substance, without having to use a loop for recirculating the product at the emulsification unit. The produced emulsion is characterized by both a fine and monodisperse particle size, and no overheating is involved that could lead to negative phenomena of hydrolyzing the ASA. The corresponding production device is also described.