Laminate including layer of ethylene-α-olefin-nonconjugated polyene copolymer composition, and application thereof

Patent metadata

Field	Value
Publication number	US-12036778-B2
Application number	US-201917289435-A
Country	US
Kind code	B2
Filing date	Oct 31, 2019
Priority date	Nov 2, 2018
Publication date	Jul 16, 2024
Grant date	Jul 16, 2024

Abstract

The present invention has an object of providing a laminate which is composed of a layer containing a melt shapable fluororesin and a layer of an ethylene-α-olefin-nonconjugated polyene copolymer composition, and is excellent in adhesiveness, and the present invention relates to a laminate including: a layer including an ethylene-α-olefin-nonconjugated polyene copolymer composition, and a layer comprising a melt shapable fluororesin; wherein the ethylene-α-olefin-nonconjugated polyene copolymer composition includes 100 parts by mass of an ethylene-α-olefin-nonconjugated polyene copolymer (A), 1.0 to 6.0 parts by mass of at least one compound (C) selected from the group consisting of 1,8-diazabicyclo(5.4.0)undecene-7 salts, 1,5-diazabicyclo(4.3.0)nonene-5 salts, 1,8-diazabicyclo(5.4.0)undecene-7 and 1,5-diazabicyclo(4.3.0)nonene-5, and 3 to 20 parts by mass of magnesium oxide.

First claim

The invention claimed is:

1. A laminate comprising: a layer comprising an ethylene-α-olefin-nonconjugated polyene copolymer composition, and a layer comprising a melt shapable fluororesin; wherein the ethylene-α-olefin-nonconjugated polyene copolymer composition comprises
100 parts by mass of an ethylene-α-olefin-nonconjugated polyene copolymer (A),
1.0 to 6.0 parts by mass of at least one compound (C) selected from the group consisting of 1,8-diazabicyclo(5.4.0)undecene-7 salts, 1,5-diazabicyclo(4.3.0)nonene-5 salts, 1,8-diazabicyclo(5.4.0)undecene-7 and 1,5-diazabicyclo(4.3.0)nonene-5,
3 to 20 parts by mass of magnesium oxide, and
25 to 200 parts by mass of a mineral oil-based softener (B) selected from naphthenic process oils and aromatic process oil; and
wherein the ethylene-α-olefin-nonconjugated polyene copolymer composition further comprises a crosslinking agent, the crosslinking agent being a sulfur-based compound.

2. The laminate according to claim 1 , wherein the compound (C) is a 1,8-diazabicyclo(5.4.0)undecene-7 salt and/or a 1,5-diazabicyclo(4.3.0)nonene-5 salt and is contained in an amount of 1.5 to 6.0 parts by mass, and the laminate further comprises 0.1 to 10 parts by mass of a dialkylcarbamic acid metal salt, with respect to 100 parts by mass of the ethylene-α-olefin-nonconjugated polyene copolymer (A).

3. The laminate according to claim 2 , wherein the dialkylcarbamic acid metal salt is a copper salt of dimethyldithiocarbamic acid or a zinc salt of dibutyldithiocarbamic acid.

4. The laminate according to claim 1 , wherein the ethylene-α-olefin-nonconjugated polyene copolymer composition further comprises
up to 100 parts by mass of a basic silica,
with respect to 100 parts by mass of the ethylene-α-olefin-nonconjugated polyene copolymer (A).

5. The laminate according to claim 1 , wherein the melt shapable fluororesin is at least one selected from the group consisting of polychlorotrifluoroethylene, chlorotrifluoroethylene-based copolymers and tetrafluoroethylene/hexafluoropropylene/vinylidene fluoride copolymers.

6. The laminate according to claim 1 , wherein a layer comprising the ethylene-α-olefin-nonconjugated polyene copolymer composition is laminated on each of both sides of a layer comprising the melt shapable fluororesin.

7. The laminate according to claim 1 , wherein a layer comprising the melt shapable fluororesin is laminated on each of both sides of a layer comprising the ethylene-α-olefin-nonconjugated polyene copolymer composition.

8. A laminate, obtained by vulcanizing a laminate according to claim 1 , wherein both the layers are vulcanizedly adhered.

9. A fuel line tube or hose comprising a laminate according to claim 1 .

10. A product comprising a laminate according to claim 1 .

11. The laminate according to claim 1 , wherein the total amount of the ethylene-α-olefin-nonconjugated polyene copolymer composition is 216.7 parts by mass or more, with respect to 100 parts by mass of the ethylene-α-olefin-nonconjugated polyene copolymer (A).

Assignees

• Mitsui Chemicals Inc
• Daikin Ind Ltd

Inventors

• Kikuchi Yoshiharu
• Ichino Kotaro
• Osawa Kozue
• Kuwajima yuki

Classifications

• C08L23/16

  Ethylene-propylene or ethylene-propylene-diene copolymers · CPC title

• C08K2003/222

  Magnesia, i.e. magnesium oxide · CPC title

• C08K5/39

  Thiocarbamic acids; Derivatives thereof, e.g. dithiocarbamates · CPC title

• C08K5/235

  Diazo and polyazo compounds · CPC title

• C08K3/36

  Silica · CPC title