Continuous process for producing hot melt adhesive compositions

Details Continuous process for producing hot melt adhesive compositions Continuous process for producing hot melt adhesive compositions

C - Chemistry, Metallurgy

09

J

C09J 183/04 (2006.01) C09J 183/14 (2006.01)

Patent

CA 2503137

A continuous method for producing moisture curable hot melt adhesive compositions includes feeding a molten mixture of an organopolysiloxane, silicone resin, silane crosslinker, catalyst and solvent into an extruder and removing the volatiles. By using a continuous process it is possible to control the non-volatile content and produce a consistent product. Upon exposure to moisture the holt melt adhesive composition cures resulting in adhesion between two substrates.

La présente invention concerne un procédé continu de production de compositions d'adhésif thermofusible durcissable à l'humidité qui consiste à alimenter un mélange fondu d'un organopolysiloxane, de résine de silicone, d'un agent de réticulation, d'un catalyseur et d'un solvant dans une extrudeuse et d'en retirer les éléments volatils. Grâce à ce processus continu, il est possible de commander le contenu non volatile et de produire un produit stable. Lorsqu'on expose cette composition d'adhésif thermofusible à l'humidité, celle-ci durcit, ce qui permet d'obtenir une adhésion entre deux substrats.

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