Hot melt adhesive composition based on a blend of amorphous...

C - Chemistry – Metallurgy – 09 – J

Patent

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C09J 123/10 (2006.01)

Patent

CA 2463430

A hot melt adhesive composition based on a polymer blend of syndiotactic polypropylene (SPP) and atactic poly-.alpha.-olefin (APAO). The composition contains about 15%-80% by weight of the SPP/APAO blend, about 15%-65% by weight of a compatible tackifier, about 0%-35% by weight of a plasticizer, about 0%-3% by weight of a stabilizer, and optionally, about 0%-30% by weight of a wax. The adhesive composition may be used in a number of applications such as, for example, in disposable nonwoven hygienic articles, paper converting, flexible packaging, wood working, carton and case sealing, labeling and other assembly applications.

L'invention concerne une composition adhésive thermofusible fondée sur un mélange polymère de polypropylène syndiotactique (SPP) et de poly-.alpha.-oléfine atactique (APAO). La composition décrite dans cette invention contient environ 15% à 80% en poids du mélange SPP/APAO, environ 15% à 65% en poids d'un agent donnant du collant compatible, environ 0% à 35% en poids d'un plastifiant, environ 0% à 3% en poids d'un stabilisant, et éventuellement, environ 0% à 30% en poids d'une cire. Cette composition adhésive peut être utilisée dans plusieurs applications, telles que, par exemple, dans des articles hygiéniques nontissés jetables, dans la transformation du papier, dans des emballages souples, pour le travail du bois, pour la fermeture des cartons et des caisses, pour l'étiquetage, ainsi que pour d'autres applications d'assemblage.

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