Elastomer compositions for use in a hydrocarbon resistant hose

a technology of elastomer composition and hydrocarbon resistant hose, which is applied in the direction of pipes, mechanical equipment, fibre treatment, etc., can solve the problems of unplanned, unsatisfactory, and inability to achieve the typical effects of dilution, and achieve excellent oil resistance, temperature and pressure resistance, and tensile strength

Inactive Publication Date: 2006-11-30
YH AMERICA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0017] In another embodiment of the present invention, there is provided a hose especially useful if the automotive industry to transport fuel, oil and various fluids. The hose of the present invention is manufactured from a blend of a first vinyl ester copolymer and a second copolymer selected from the group consisting of ethylene-acrylic elastomer (AEM), alkyl-acrylate copolymer (ACM), and mixtures thereof. As indicated above, other polymers such as chlorosulfonated polyethylene (CSM), chlorinated polyethylene (CPE), polychloroprene (CR), polyvinyl acetate (PVA), nitrile-butadiene rubber (NBR), hydrogenated nitrile-butadien

Problems solved by technology

However, the blending of two ore more of these materials to obtain the beneficial characteristics of each material, more often than not, is only marginally successful, because the blending of the two materials simply dilutes their characteristics in the blend as compared to the individual components alone.
It has now been discovered that blends of an ethylene-vinyl ester, e.g., vinyl acetate, with certain other polymers, particularly, ethylene-acrylic elastomers (AEM) or alkyl-acrylate copolymer (ACM) or mixtures thereof, not only provide a material for use in the manufacture of hoses which meet government standards with regard to permeability rates, has good tensile strength, has go

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0063]

Parts per hundred of polymer (phr)Levapren ® 500 HV100809090Hypalon ® 4085 (CSM)1010Tyrin ® CM0136 (CPE)1010Stearic Acid1111Magnesium Oxide10101010N650 Carbon Black75757575Silicon Dioxide5555Trioctyl Trimellitate101010101-Octadecanamine1111Triallyl Cyanurate, 72% Dispersion1111N,N′-m-Phenylene Dimaleimide1111Dicumyl Peroxide; 60% Active44444,4′-Di(methylbenzyl)diphenylamine2222Polyethylene2222Polyethylene Glycol2222Cured 20 minutes @ 175° C.Original PropertiesTensile Strength; psi1699208320591873Elongation %242195213243100% Modulus; psi78511871074923Hardness; Shore A77797979Compression Set, 70 h. @ 175° C.48735851After 336 hours @ 175° C. in AirTensile Strength; psi1497199325142114Elongation %13611424100% Modulus; psi1407n / an / an / aHardness; Shore A54474743After 70 hours @ 175° C.in Chrysler MS9602Automatic Transmission FluidTensile Strength; psi145598611531099Elongation %274116149175100% Modulus; psi446813670480Hardness; Shore A54474743Volume Change; %29525153

Levapren is a trad...

example 2

[0064]

Parts per hundred of polymer (phr)Levapren ® 600 HV100755025755025Vamac ® PE 2166255075100Vamac ® DLS255075100Stearic Acid111111111Magnesium Oxide101010101010101010N650 Carbon Black707070707070707070Silicon Dioxide555555555Trioctyl Trimellitate7.57.57.57.57.57.57.57.57.5Adipate Plasticizer2.52.52.52.52.52.52.52.52.51-Octadecanamine111111111Poly(oxy-1,2-ethanediyl),alpha-111111111octadecyl-omega-hydroxy,-phosphateTriallyl Cyanurate, 72% Dispersion111111111N,N′-m-Phenylene Dimaleimide111111111Dicumyl Peroxide; 99%2.42.42.42.42.42.42.42.42.44,4′-Di(methylbenzyl)diphenylamine222222222Cured 20 minutes @ 175° C.Original PropertiesTensile Strength; psi18061702148613611054166414821336997Elongation %289284282294316282253306373100% Modulus; psi761691662632527670643583381Hardness; Shore A787981797978767573Compression Set, 70 h. @ 175° C.496267737666718090After 168 hours @ 150° C. in AirTensile Strength; psi16451432120010459291588150114211149Elongation %285311332300336293240271336100% Mod...

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Abstract

A heat tolerant, pressure resistant elastomeric composition comprising a blend of a first ethylene-vinyl ester copolymer and a second copolymer selected from the group consisting of chlorosulfonated polyethylene (CSM), chlorinated polyethylene (CPE), polychloroprene (CR), ethylene-acrylic elastomer (AEM), alkyl-acrylate copolymer (ACM), polyvinyl acetate (PVA), nitrile-butadiene rubber (NBR), hydrogenated nitrile-butadiene rubber (HNBR), and mixtures thereof; a hose manufactured therefrom; and a method for preparing the hose are described.

Description

[0001] This application is a continuation-in-part of U.S. patent application Ser. No. 10 / 830,790, filed Apr. 21, 2004, which is a continuation-in-part of U.S. patent application Ser. No. 10 / 663,324 filed Sep. 15, 2003.BACKGROUND OF THE INVENTION [0002] The present invention relates generally to polymeric compositions. More particularly, the present invention relates to polymeric compositions useful in the manufacture of automotive components, particularly automotive hoses for the transport of automotive fluids. [0003] Hoses, particularly rubber hoses, are used in a variety of applications in the automotive industry as fuel feed hoses, torque converter hoses, power steering hoses and air conditioner hoses; as well as for industrial and household utility applications such as hydraulic hoses, refrigeration hoses, washing machine hoses, propane gas feed hoses, high pressure air hoses, garden hoses, etc. [0004] It is generally known that rubber surfaces do not always exhibit desired resi...

Claims

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Application Information

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IPC IPC(8): D06M15/263
CPCB29C47/00F16L11/06B29C47/0016B29C48/00B29C48/06
Inventor BECK, HAROLD D.
Owner YH AMERICA
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