Refrigerant hose
US8080298B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 26, 2008 |
| Grant date | Dec 20, 2011 |
| Priority date | — |
| Expiry date | Dec 26, 2028 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/1386
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
An object of the present invention is to provide a hose which has a gas barrier layer and a rubber layer adhered without using an adhesive, and which has a dramatically improved durability compared to the conventional hose. The hose of the present invention is a refrigerant hose having an inner layer comprising a gas barrier layer and a rubber layer adhered to the outer surface of the gas barrier layer. The gas barrier layer comprises a modified polyamide prepared by blending a polyamide and a carboxyl group-containing modified polyolefin, and the rubber layer comprises a rubber composition prepared by blending a particular amount of an alkylphenol formaldehyde resin and a particular amount of carbon black with a raw rubber. The raw rubber comprises a BIMS, a copolymer rubber which is a butyl rubber and/or a halogenated butyl rubber, and an EPDM, the carbon black is specified, and no adhesive layer is formed between the gas barrier layer and the rubber layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.