Method for preparing microparticles of a thermoplastic resin...

Details Method for preparing microparticles of a thermoplastic resin... Method for preparing microparticles of a thermoplastic resin...

B - Operations, Transporting

01

J

B01J 37/02 (2006.01) B01J 2/04 (2006.01) B01J 33/00 (2006.01) B29B 9/00 (2006.01) C08J 3/12 (2006.01) C08K 9/10 (2006.01)

Patent

CA 2043157

Microparticles of a hydrosilylation catalyst encapsulated in a thermoplastic resin are prepared by forming a solution containing the hydrosilylation catalyst and a thermoplastic resin with a glass-transition temperature or softening point of 40 to 200° C dissolved in a solvent, and then spraying this solution as droplets into a hot gas current in order to volatilize the solvent while solidifying said thermoplastic resin during entrainment of the droplets in the gas current.

Des microparticules d'un catalyseur de l'hydrosilylation encapsulées dans une résine thermoplastique sont obtenues en formant une solution du catalyseur de l'hydrosilylation et d'une résine thermoplastique ayant une température de transition vitreuse ou point de ramolissement de 40 à 200 oC dissoute dans un solvant, et en pulvérisant cette solution en gouttelettes dans un flux gazeux chaud afin de faire se volatiliser le solvant et solidifier la résine thermoplastique pendant que les gouttelettes sont entraînées dans le flux gazeux.

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