Adhesive and marking compositions made from interpolymers of...

Details Adhesive and marking compositions made from interpolymers of... Adhesive and marking compositions made from interpolymers of...

C - Chemistry, Metallurgy

08

F

C08F 297/08 (2006.01) C08F 2/38 (2006.01) C08F 4/646 (2006.01) C08F 295/00 (2006.01) C09J 123/08 (2006.01)

Patent

CA 2601273

An adhesive composition comprises: (i) at least one ethylene/.alpha.-olefin interpolymer, (ii) at least one tackifÊer; and (iii) optionally at least one additive, such as a plasticizer, wax and antioxidant. Preferably, the ethylene/.alpha.-olefm interpolymer has a Mw/Mn from about 1.7 to about 3.5, at least one melting point, Tm, in degrees Celsius, and a density, d, in grams/cubic centimeter, wherein the numerical values of Tm and d correspond to the relationship: Tm >= 858.91 - 1825.3(d) + 1112.8(d)2. The composition has relatively higher SAFT temperature and can be used in hot melt adhesives pressure-sensitive adhesives, and thermoplastic marking paints.

Une composition adhésive comprend: (i) au moins un interpolymère d'éthylène/ a-oléfine; (ii) au moins un agent donnant du collant; et (iii) éventuellement au moins un additif tel que plastifiant, cire ou antioxydant. De préférence, l'interpolymère d'éthylène/a-oléfine présente un rapport Mw/Mn d'environ 1,7 à environ 3,5, et une densité "d" exprimée en g/cm3 tels que les valeurs numériques de "Tm" et "d" respectent la relation: Tm = 858,91 1825,3(d) + 1112,8(d)2. La composition présente une température SAFT ("Shear Adhesion Failure Temperature" c'est-à-dire "température de rupture d'adhésion par cisaillement") relativement élevée. Cette composition convient particulièrement pour les colles autocollantes à chaud et pour les peintures de marquage thermoplastiques.

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