Expandable microspheres and process for producing the same

Details Expandable microspheres and process for producing the same Expandable microspheres and process for producing the same

C - Chemistry, Metallurgy

08

J

C08J 9/20 (2006.01) B01J 13/02 (2006.01) B01J 13/14 (2006.01)

Patent

CA 2320966

Expandable microspheres which each comprises a polymer shell and a foaming agent encapsulated therein, characterized by having an average particle diameter of 3 to 100 µm and a coefficient of variation in particle diameter distribution of 1.50 % or lower; and a process for producing the expandable microspheres through suspension polymerization.

L'invention concerne des microsphères expansibles, chacune de ces microsphères comprenant une coque polymère et un agent moussant encapsulé dans cette coque. Ces microsphères présentent un diamètre de particules moyen situé entre 3 et 100 µm, et un coefficient de variation de la distribution du diamètre de particules inférieur ou égal à 1,50 %. L'invention concerne également un procédé de production de ces microsphères expansibles par polymérisation en suspension.

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