Method for production of particulate polymers

Details Method for production of particulate polymers Method for production of particulate polymers

C - Chemistry, Metallurgy

08

G

402/131, 400/740

C08G 18/08 (2006.01) C08G 18/38 (2006.01) C08G 18/48 (2006.01) C08L 75/04 (2006.01)

Patent

CA 2024798

This invention relates to a method of producing particulate polymers. This production method is characterized in that a mixture of an isocyanate compound containing two or more isocyanato groups per molecule and a surfactant containing two or more hydroxyl groups per molecule is emulsified and allowed to cure in a dispersing medium which does not dissolve the isocyanate compound without use of a protective colloid. According to the production method of the invention, there occurs no aggregation of polymer particles during and after the curing reaction.

Méthode pour l'obtention de polymères en particules. Cette méthode est caractérisée par le fait qu'un mélange d'un isocyanate renfermant deux ou plusieurs groupes isocyanato par molécule et un surfactif contenant deux ou plusieurs groupes hydroxyle par molécule est émulsifié et réticulé dans un milieu de dispersion qui ne dissout pas l'isocyanate sans l'emploi d'un colloïde protecteur. Selon la méthode de l'invention, il n'y a pas d'agrégation de particules polymériques pendant et après la réaction de réticulation.

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