Process for producing granular carboxylated-polymer particle...

Details Process for producing granular carboxylated-polymer particle... Process for producing granular carboxylated-polymer particle...

C - Chemistry, Metallurgy

08

J

C08J 3/12 (2006.01)

Patent

CA 2650198

A process for easily producing granular carboxylated-polymer particles which have a high bulk density and readily swell in water. The process for producing granular carboxylated-polymer particles comprises: a step in which carboxylated-polymer particles are produced; a step in which the carboxylated-polymer particles are moistened so as to have a water content of 5-25 wt.% to thereby produce agglomerates of the carboxylated-polymer particles; and a step in which the agglomerates of the carboxylated-polymer particles are dried and then pulverized.

L'invention concerne un procédé permettant de produire facilement des particules de polymère carboxylé ayant une densité apparente élevée et gonflant facilement dans l'eau. Ledit procédé comprend : une étape consistant à produire les particules de polymère carboxylé ; une étape consistant à humidifier les particules de polymère carboxylé pour leur conférer une teneur en eau allant de 5 à 25 % en poids et ainsi produire des agrégats de particules de polymère carboxylé ; et enfin une étape consistant à sécher et pulvériser les agrégats de particules de polymère carboxylé.

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