Polyolefin compositions with improved bonding behavior

Details Polyolefin compositions with improved bonding behavior Polyolefin compositions with improved bonding behavior

C - Chemistry, Metallurgy

08

L

C08L 23/02 (2006.01) C08J 5/12 (2006.01) C08K 5/34 (2006.01) C08L 23/00 (2006.01)

Patent

CA 2256397

The invention relates to polyolefines with improved adhesivity, especially to cyanacrylate adhesives. An improvement in adhesion to such adhesives is obtained by incorporated polymerisation initiators, especially sterically inhibited bases like diazabicyclo[5.4.0]undec-7-ene(DBU) and 1,5- diazabicyclo[4.3.0]-non-5-ene(DBN). The invention also relates to a process for improving the adhesivity of polyolefines in which polymerisation initiators like DBU or DBN are incorporated during extrusion or injection, for example.

L'invention concerne des polyoléfines à adhésivité améliorée, notamment vis-à-vis des colles au cyanacrylate. Une adhérence accrue vis-à-vis de ces colles s'obtient par l'incorporation d'initiateurs de polymérisation, notamment des bases à empêchement stérique comme le diazabicyclo[5.4.0]undec-7-ène(DBU) et le 1,5-diazabicyclo[4.3.0]-non-5-ène(DBN). L'invention concerne également un procédé pour améliorer l'adhésivité des polyoléfines en y incorporant des initiateurs de polymérisation comme le DBU ou le DBN, par exemple pendant l'extrusion ou l'injection.

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