Polypropylene-based adhesive compositions

Details Polypropylene-based adhesive compositions Polypropylene-based adhesive compositions

C - Chemistry, Metallurgy

09

J

C09J 123/16 (2006.01) C09J 11/02 (2006.01) C09J 123/12 (2006.01) C09J 123/14 (2006.01)

Patent

CA 2590871

An adhesive composition comprising a copolymer of propylene and at least one comonomer selected from the group consisting of ethylene and C4-20 .alpha.- olefins, the copolymer having (i) a content of units derived from propylene of greater than about 50 mole percent, (ii) a Brookfield viscosity at 190C from about 50 to about 100,000 cP, (iii) an MWD from about 1.5 to about 15, and (iv) containing less than about 50 ppm residual catalyst metal.

L'invention concerne une composition adhésive qui comprend un copolymère de propylène et au moins un comonomère sélectionné dans le groupe comprenant éthylène et C4-20 .alpha.-oléfines. Le copolymère comprend : (i) une teneur en unités dérivées de propylène supérieure à environ 50 % molaire ; (ii) une viscosité Brookfield à 190 °C comprise entre environ 50 et environ 100000 cP ; (iii) une répartition du poids moléculaire comprise entre environ 1,5 et environ 15 ; et (iv) contient moins d'environ 50 ppm de métal catalyseur résiduel.

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