# US 2008/0187701 A1 · Tpe/Pp/Reinforcement Multilayer Tube

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- Number: US 2008/0187701 A1
- Document ID: US20080187701A1
- Status: Published application
- Kind: A1
- Application number: 11/577,574
- Filed: 2005-10-19
- Published: 2008-08-07
- Earliest claimed: 2004-10-19
- Inventors: Johann Dabouineau
- Web page: https://patentgrep.com/patent/US20080187701A1

## CPC

- B32B 27/32: comprising polyolefins {(comprising vinyl (co)polymers or acrylic (co)polymers B32B27/30)}
- B32B 1/08: Tubular products
- B32B 7/12: using interposed adhesives or interposed materials with bonding properties
- B32B 27/08: of synthetic resin
- B32B 27/34: comprising polyamides
- F16L 11/045: {with four or more layers without reinforcement}
- B32B 2305/72: Cured, e.g. vulcanised, cross-linked
- B32B 2597/00: Tubular articles, e.g. hoses, pipes
- Y10T 428/1393: Multilayer [continuous layer]
- B32B: LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- F16L: PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

A multilayer tube that comprises, from the inside to the outside: an inner layer of thermoplastic elastomer (1) that is compatible with polypropylene; an intermediate layer of polypropylene (2) that is in direct contact with the inner layer; and an outer reinforcement layer (4).

## Claims

### Claim 1

multilayer tube that comprises, from the inside to the outside:
an inner layer of thermoplastic elastomer (1) that is compatible with polypropylene;
an intermediate layer of polypropylene (2) that is in direct contact with the inner layer; and
an outer reinforcement layer (4)

### Claim 2 (depends on 1)

A tube according to claim 1, wherein the outer layer (4) is of polyamide.

### Claim 3 (depends on 1)

A tube according to claim 1, wherein the outer layer (4) is of polyamide 6-12.

### Claim 4 (depends on 1)

A tube according to claim 1, wherein the outer layer (4) has a majority phase of polyphenylene sulfone.

### Claim 5 (depends on 1)

A tube according to claim 1, the tube having a binder layer (3) of maleic anhydride grafted polyolefin.

### Claim 6 (depends on 1)

A tube according to claim 1, wherein the inner layer (1) is of a vulcanized thermoplastic elastomer.

### Claim 7 (depends on 1)

A tube according to claim 1, wherein the inner layer (1) is of a thermoplastic elastomer and olefin alloy.

### Claim 8 (depends on 1)

A tube according to claim 1, wherein the inner layer is of a thermoplastic elastomer and styrene alloy.

### Claim 9 (depends on 8)

A tube according to claim 8, wherein the styrene thermoplastic elastomer comprises a base of polypropylene in which styrene-butadiene-styrene is dispersed.

### Claim 10 (depends on 8)

A tube according to claim 8, wherein the styrene thermoplastic elastomer comprises a base of polypropylene in which styrene-ethylene-butadiene-styrene is dispersed.