Hose

• US 20080041484A1
• Filed: 08/17/2006
• Published: 02/21/2008
• Est. Priority Date: 08/17/2006
• Status: Active Grant

• Current Assignee: ContiTech USA, Inc. (Continental AG)
• Original Assignee: Veyance Technologies Incorporated (Continental AG)
• Inventors: Haines, Bradley James
• Granted Patent: US 7,478,654 B2
• Time in Patent Office: Days
• US Class Current: 138/126
• CPC Class Codes: B32B 1/08 Tubular products
• CPC Class Codes: B32B 2264/10 Inorganic particles
• CPC Class Codes: B32B 2305/55 Liquid crystals
• CPC Class Codes: B32B 25/10 next to a fibrous or filamentary layer
• CPC Class Codes: B32B 27/08 of synthetic resin
• CPC Class Codes: B32B 27/18 characterised by the use of special additives
• CPC Class Codes: B32B 27/306 comprising vinyl acetate or vinyl alcohol (co)polymers
• CPC Class Codes: F16L 11/08 with reinforcements embedded in the wall F16L11/11 takes precedence
• CPC Class Codes: F16L 2011/047 with a diffusion barrier layer
• CPC Class Codes: Y10S 138/07 Resins

Abstract

A hose including at least one permeation resistant layer, an elastomeric layer overlaying each at least one permeation resisting layer, at least one reinforcement layer overlaying an elastomeric layer, and a cover layer overlaying the at least one reinforcement layer, wherein the at least one permeation resistant layer includes plurality of sublayers of at least two different thermoplastics wherein the sublayers have a thickness of less than 2500 nanometers.

Claims

1. A hose comprising:

at least one permeation resistant layer;

an elastomeric layer overlaying the at least one permeation resisting layer;

at least one reinforcement layer overlaying the elastomeric layer; and

a cover layer overlaying the at least one reinforcement layer,

wherein the at least one permeation resistant layer is comprised of a plurality of sublayers of first and second thermoplastics in a weight ratio ranging from 5;

1 to 1;

5, and each of the sublayers has a thickness of less than 2500 nanometers.

2. The hose of claim 1 wherein the thickness is less than 1000 nanometers.

3. The hose of claim 1 wherein the thickness is less than 500 nanometers.

4. The hose of claim 1 wherein the thickness is less than 250 nanometers.

5. The hose of claim 1 wherein the first and second thermoplastics are selected from the group consisting of high density polyethylene (HDPE), ultrahigh molecular weight polyethylene (UHMWPE), polypropylene (PP), and ethylene propylene copolymer thermoplastic resin;

nylon 6 (N6), nylon 66 (N66), nylon 46 (N46), nylon 11 (N11), nylon 12 (N12), nylon 610 (N610), nylon 612 (N612), nylon 6/66 copolymer (N6/66), nylon 6/66/610 copolymer (N6/66/610), nylon MXD6 (MXD6), nylon 6T, nylon 6/6T copolymer, nylon 66/PP copolymer, and nylon 66/PPS copolymer;

polybutylene terephthalate (PBT), polyethylene terephthalate (PET), polyethylene isophthalate (PEI), PET/PEI copolymer, polyacrylate (PAR), polybutylenenaphthalate (PBN), polyoxyalkylenediimidate/polybutyrateterephthalate copolymer, and other aromatic polyesters;

polyacrylonitrile (PAN), polymethacrylonitrile, acrylonitrile/styrene copolymer (AS), methacrylonitrile/styrene copolymer,

methacrylonitrile/styrene/butadiene copolymer;

polymethacrylate thermoplastic resins such as polymethyl methacrylate (PMMA), and polyethylmethacrylate;

vinyl acetate (EVA), polyvinylalcohol (PVA), vinylalcohol/ethylene copolymer (EVOH), polyvinylidene chloride (PVDC), polyvinyl chloride (PVC), vinyl chloride/vinylidene chloride copolymer, and vinylidene chloride/methylacrylate copolymer;

cellulose acetate, cellulose acetate butyrate;

polyvinylidene fluoride (PVDF), polyvinyl fluoride (PVF), polychlorofluoroethylene (PCTFE), and tetrachloroethylene/ethylene copolymer (ETFE), tetrafluoroethylene-hexafluoropropylene/vinylidene fluoride terpolymer (THV); and

aromatic polyimide (PI).

6. The hose of claim 1 wherein one of the sublayers is an innermost layer of the hose.

7. The hose of claim 1 further comprising:

another elastomeric layer radially inside of the at least one permeation resistant layer.

8. The hose of claim 1 wherein the first thermoplastic is ethylene vinyl alcohol copolymer.

9. The hose of claim 1 wherein the first thermoplastic is a liquid crystal polymer.

11. The hose of claim 1 wherein the weight ratio ranges from 2:

1 to 1;

2.

12. A hose of claim 1, wherein comprising:

at least one permeation resistant layer;

an elastomeric layer overlaying the at least one permeation resisting layer;

at least one reinforcement layer overlaying the elastomeric layer; and

a cover layer overlaying the at least one reinforcement layer,

wherein the at least one permeation resistant layer is comprised of a plurality of sublayers of at least two different thermoplastics, each of the sublayers has a thickness of less than 2500 nanometers, and the permeation resistant layer further contains a particulate selected from clay and mica.

13. The hose of claim 12 wherein the thickness is less than 1000 nanometers.

14. The hose of claim 12 wherein the thickness is less than 500 nanometers.

15. The hose of claim 12 wherein the thickness is less than 250 nanometers.

16. The hose of claim 12 wherein the at least two different thermoplastics are selected from the group consisting of high density polyethylene (HDPE), ultrahigh molecular weight polyethylene (UHMWPE), polypropylene (PP), and ethylene propylene copolymer thermoplastic resin;

nylon 6 (N6), nylon 66 (N66), nylon 46 (N46), nylon 11 (N11), nylon 12 (N12), nylon 610 (N610), nylon 612 (N612), nylon 6/66 copolymer (N6/66), nylon 6/66/610 copolymer (N6/66/610), nylon MXD6 (MXD6), nylon 6T, nylon 6/6T copolymer, nylon 66/PP copolymer, and nylon 66/PPS copolymer;

polybutylene terephthalate (PBT), polyethylene terephthalate (PET), polyethylene isophthalate (PEI), PET/PEI copolymer, polyacrylate (PAR), polybutylenenaphthalate (PBN), polyoxyalkylenediimidate/polybutyrateterephthalate copolymer, and other aromatic polyesters;

polyacrylonitrile (PAN), polymethacrylonitrile, acrylonitrile/styrene copolymer (AS), methacrylonitrile/styrene copolymer, methacrylonitrile/styrene/butadiene copolymer;

polymethacrylate thermoplastic resins such as polymethyl methacrylate (PMMA), and polyethylmethacrylate;

vinly acetate (EVA), polyvinylalcohol (PVA), vinylalcohol/ethylene copolymer (EVOH), polyvinylidene chloride (PVDC), polyvinyl chloride (PVC), vinyl chloride/vinylidene chloride copolymer, and vinylidene chloride/methylacrylate copolymer;

cellulose acetate, cellulose acetate butyrate;

polyvinylidene fluoride (PVDF), polyvinyl fluoride (PVF), polychlorofluoroethylene (PCTFE), and tetrachloroethylene/ethylene copolymer (ETFE), tetrafluoroethylene-hexafluoropropylene/vinylidene fluoride terpolymer (THV); and

aromatic polyimide (PI).

17. The hose of claim 12 wherein one of the sublayers is an innermost layer of the hose.

18. The hose of claim 12 further comprising:

another elastomeric layer radially inside of the at least one permeation resistant layer.

19. The hose of claim 12 wherein one of the at least two different thermoplastics is ethylene vinyl alcohol copolymer.

20. The hose of claim 12 wherein one of the at least two different thermoplastics is a liquid crystal polymer.

21. The hose of claim 12 wherein the at least two different thermoplastics include first and second thermoplastics in a weight ratio ranging from 5:

1 to 1;

5.

22. The hose of claim 12 wherein the at least two different thermoplastics include first and second thermoplastics in a weight ratio ranging from 2:

1 to 1;

2.

10. (canceled)