Adhesive composition
AssigneeBorealis AG
InventorsKurt Stubenrauch, Mark Jeruzal, Yi Liu
Life of this patent
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Abstract
The present invention relates to an adhesive composition comprising a. a polyethylene resin (A) which has been grafted with an acid grafting agent and b. an epoxy resin (B) in an amount of 0.01 to 15 wt. % of the adhesive total composition, wherein the adhesive composition is having a MFR5 of 0.1 to 12 g/10 min. Furthermore, the invention relates to an article, in particular a multilayer pipe, comprising an adhesive layer which comprises said adhesive composition and the use of said adhesive composition for the production of an adhesive layer, in particular of an adhesive layer of a pipe.
Claims17
A pipe comprising an adhesive layer comprising an adhesive composition comprising
- a. a polyethylene resin (A) which has been grafted with an acid grafting agent and
- b. an epoxy resin (B) in an amount of 0.01 to 20 wt. % of the adhesive total composition,
- wherein the adhesive composition has a MFR5 of 0.1 to 12 g/10 min;
- and wherein the polyethylene resin (A) comprises:
- a low molecular weight ethylene polymer having a density of 900 to 950 kg/m3 and an MFR2 of 25 to 300 g/10 min;
- and a high molecular weight polymer having a density of 870 to 940 kg/m3 and an MFR2 of 0.1 to 3.0 g/10 min.
A pipe comprising an adhesive layer comprising an adhesive composition comprising
- a polyethylene resin (A) which has been grafted with an acid grafting agent, the polyethylene resin (A) comprising:
- 44 to 50 wt. % based on the weight of the polyethylene resin (A) of a low molecular weight ethylene polymer having a density of 900 to 950 kg/m3 and an MFR2 of 25 to 300 g/10 min;
- and
- 50 to 56 wt. % based on the weight of the polyethylene resin (A) of a high molecular weight ethylene polymer having a density of 870 to 940 kg/m3 and an MFR2 of 0.1 to 3.0 g/10 min;
- 0.2 to 6 wt. % of an epoxy resin (B) based on the overall adhesive composition;
- and
- 20 to 40 wt. % of an elastomeric resin (C) based on the overall adhesive composition;
- wherein the adhesive composition has a MFR5 of 0.1 to 12 g/10 min.
Dependencies are inferred from the claim text.