Stock material or miscellaneous articles – Hollow or container type article – Polymer or resin containing
Reexamination Certificate
2008-12-26
2011-12-20
Jacobson, Michele L (Department: 1782)
Stock material or miscellaneous articles
Hollow or container type article
Polymer or resin containing
C428S035700, C138S118000, C138S137000, C138S140000
Reexamination Certificate
active
08080298
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.
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Oishi Hideyuki
Sato Koji
Yamakawa Kazuto
Blackman William D.
Carrier Joseph P.
Carrier Blackman & Associates P.C.
Jacobson Michele L
The Yokohama Rubber Co. Ltd.
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