Packaged glass sealants

Details Packaged glass sealants Packaged glass sealants

C - Chemistry, Metallurgy

09

J

C09J 123/00 (2006.01)

Patent

CA 2580458

A packaged glass sealant product, is formed of a sealant composition having a processing temperature in the range of from greater than 70~C up to 220~C and a skin of thermoplastic polymeric material around said sealant composition. The skin constitutes no more than 10 wt% of the total weight of said product, and said polymeric material has a minimum film forming temperature of at least 50~C and a softening point which is lower than the processing temperature for application of said sealant composition by a difference of more than 10~C. The product alleviates the necessity of disposing of non-recyclable, silicone coated packaging by environmentally unfriendly methods in particular land-fill.

Cette invention concerne un produit d'étanchéité pour vitres prêt à l'emploi formé à partir d'une composition de mastic dont la température de traitement est comprise entre au moins 70 °C et au plus 220 °C et d'une pellicule de matériau polymère thermoplastique appliquée autour de cette composition de mastic. La pellicule ne constitue pas plus de 10 % en poids du poids total dudit produit. Le matériau polymère présente une température de formation de pellicule minimum d'au moins 50 °C et un point de ramollissement qui est inférieur à la température de traitement pour application de cette composition de mastic d'au moins 10 °C. Ce produit permet d'éviter d'avoir éliminer des emballages recouverts de silicone non recyclables par des procédés nuisibles pour l'environnement, en particulier la mise en décharge.

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