Encapsulation

B - Operations – Transporting – 01 – J

Patent

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Details

B01J 13/02 (2006.01)

Patent

CA 2275377

A colloidal aggregate suitable for use in the curing of resins comprises a continuous phase of a water based encapsulent material and a dispersed phase comprising one or more strong acids. The continuous phase advantageously comprises a mixture of gelatin and xanthan gum. The aggregate is sonicated to encapsulate the acid in the encapsulent material. The encapsulated acid is mixed with a curable resin. The acid capsules may be ruptured by any suitable means, but particularly ultrasound, to release the acid to initiate curing of the resin.

La présente invention concerne un agrégat colloïdal utilisé pour le traitement de résines, comprenant une phase continue d'un matériau agent d'encapsulation à base d'eau et une phase dispersée comprenant un ou plusieurs acides forts. La phase continue comprend avantageusement un mélange de gélatine et de gomme xanthane. L'agrégat est soumis à un traitement ultrasonique de manière à encapsuler l'acide dans le matériau agent d'encapsulation. L'acide encapsulé est mélangé avec une résine polymérisable. Les capsules d'acide peuvent être rompues par tout moyen approprié mais plus particulièrement par des ultrasons, de manière à libérer l'acide pour amorcer le traitement de la résine.

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