Laminate
AssigneeMitsui Chemicals, Inc.
InventorsYoshiharu Kikuchi, Kotaro Ichino
Life of this patent
Estimating the term…
Abstract
An object of the present invention is to provide a laminate of an olefin-type rubber, which is non-polar or has a small polarity and which is difficult to bond with a different material, and a rubber comprising Group 15 elements, which is a different kind of rubber. The laminate according to the present invention includes a structure including, in order, an olefin-type rubber layer (A); an adhesive resin layer (B) containing at least one selected from the group consisting of an ethylene/vinyl acetate copolymer, a silane-modified ethylene/vinyl acetate copolymer, an ethylene/acrylic acid copolymer and an ionomer thereof, and an ethylene/methacrylic acid copolymer and an ionomer thereof; and a layer (C) containing a rubber containing Group 15 elements.
Claims8
A laminate comprising a structure comprising, in order,
- an olefin-type rubber layer (A);
- an adhesive resin layer (B) consisting of at least one selected from the group consisting of an ethylene/vinyl acetate copolymer, and a silane-modified ethylene/vinyl acetate copolymer;
- and
- a layer (C) containing a rubber containing Group 15 elements;
- wherein the laminate has a layer structure of layer (A)/layer (B)/layer (C),
- wherein the adhesive resin layer (B) is in direct contact with the olefin-type rubber layer (A) and the layer (C),
- wherein the olefin-type rubber layer (A) contains an ethylene/α-olefin/non-conjugated polyene copolymer having a weight-average molecular weight (Mw) within the range of from 10,000 to 600,000, and
- wherein the ethylene/vinyl acetate copolymer has a density in the range of from 930 kg/m3 to 980 kg/m3, has a melt flow rate (MFR) at 190° C. under a load of 2.16 kg of from 0.8 g/10 minutes to 30 g/10 minutes, and has a vinyl acetate content of in the range of from 10% by mass to 50% by mass.
Dependencies are inferred from the claim text.