Tire comprising a multilayer laminated composite

Patent metadata

Field	Value
Publication number	US-2016311201-A1
Application number	US-201415104407-A
Country	US
Kind code	A1
Filing date	Dec 11, 2014
Priority date	Dec 17, 2013
Publication date	Oct 27, 2016
Grant date	—

Abstract

A tire comprises an elastomer laminate, said laminate comprising at least two superposed elastomer layers, namely, a first layer, or aromatic polyester-block copolymer (APBC) layer, consisting of a composition based on at least one aromatic polyester-block copolymer (APBC) thermoplastic elastomer, the content of aromatic polyester-block copolymer (APBC) being within a range extending from more than 50 to 100 phr (parts by weight per 100 parts by weight of elastomer) and a second layer, or diene layer, consisting of a composition based on at least one diene elastomer, the content of diene elastomer being in a range extending from more than 50 to 100 phr.

First claim

1 - 17 . (canceled)

18 . A tire comprising an elastomer laminate, said laminate comprising at least two superposed elastomer layers:
a first layer, or aromatic polyester-block copolymer layer, consisting of a composition based on at least one aromatic polyester-block copolymer thermoplastic elastomer, the content of aromatic polyester-block copolymer being within a range extending from more than 50 to 100 phr; and a second layer, or diene layer, consisting of a composition based on at least one diene elastomer, the content of diene elastomer being in a range extending from more than 50 to 100 phr.

19 . The tire according to claim 18 , wherein the elastomer block of the at least one aromatic polyester-block copolymer thermoplastic elastomer of the first layer is selected from the group consisting of polyethers, aliphatic polyesters, polycarbonates and mixtures thereof.

20 . The tire according to claim 19 , wherein the at least one aromatic polyester-block copolymer thermoplastic elastomer of the first layer is selected from the group consisting of copolymers of aromatic polyester, copolymers of polyether and mixtures thereof.

21 . The tire according to claim 20 , wherein the at least one aromatic polyester-block copolymer thermoplastic elastomer of the first layer is selected from the group consisting of copolymers of aromatic polyester, copolymers of aliphatic polyether and mixtures thereof.

22 . The tire according to claim 18 , wherein the number-average molecular weight of the aromatic polyester-block copolymer is between 15,000 and 500,000 g/mol.

23 . The tire according to claim 18 , wherein the at least one aromatic polyester-block copolymer thermoplastic elastomer of the first layer has a glass transition temperature (T g ) which is less than or equal to 25° C.

24 . The tire according to claim 23 , wherein the at least one aromatic polyester-block copolymer thermoplastic elastomer of the first layer has a glass transition temperature (T g ) which is less than or equal to 10° C.

25 . The tire according to claim 18 , wherein the melting point (T m ) of the aromatic polyester-block copolymer is between 140° C. and 210° C.

26 . The tire according to claim 18 , wherein the content of aromatic polyester-block copolymer in the composition of the first layer is within a range extending from 70 to 100 phr.

27 . The tire according to claim 26 , wherein the content of aromatic polyester-block copolymer in the composition of the first layer is within a range extending from 80 to 100 phr.

28 . The tire according to claim 18 , wherein the aromatic polyester-block copolymer is the only elastomer of the first layer.

29 . The tire according to claim 18 , wherein the first layer does not contain a crosslinking system.

30 . The tire according to claim 18 , wherein the diene elastomer of the second layer is selected from the group consisting of essentially unsaturated diene elastomers and mixtures thereof.

31 . The tire according to claim 30 , wherein the diene elastomer of the second layer is selected from the group consisting of homopolymers obtained by polymerization of a conjugated diene monomer having from 4 to 12 carbon atoms, copolymers obtained by copolymerization of one or more conjugated dienes with one another or with one or more vinyl aromatic compounds having from 8 to 20 carbon atoms, and mixtures thereof.

32 . The tire according to claim 31 , wherein the diene elastomer of the second layer is selected from the group consisting of polybutadienes, synthetic polyisoprenes, natural rubber, butadiene copolymers, isoprene copolymers and mixtures thereof.

33 . The tire according to claim 18 , wherein the second layer comprises a reinforcing filler.

34 . The tire according to claim 33 , wherein the reinforcing filler is carbon black, silica, or a combination thereof.

35 . The tire according to claim 34 , wherein the predominant reinforcing filler is carbon black.

Assignees

• Michelin & Cie
• Michelin Rech Tech
• Michelin & Cie

Inventors

• Abad Vincent

Classifications

• C08L9/06 Primary

  Copolymers with styrene · CPC title

• B32B25/16

  comprising polydienes {homopolymers} or poly-halodienes {homopolymers (B32B25/12 takes precedence)} · CPC title

• B60C1/00

  Tyres characterised by the chemical composition or the physical arrangement or mixture of the composition · CPC title

• B32B25/14

  comprising {synthetic rubber copolymers (B32B25/18 and B32B25/20 take precedence)} · CPC title

• B32B25/02

  with fibres or particles {being present as additives in the layer} · CPC title