Air conditioning hose
The present invention relates to a composite flexible hose, preferably for use in automotive air conditioning systems, with improved thermal resistance. The hose consists of an innermost core layer, a friction rubber layer, an intermediate reinforcement layer, and an external cover layer. The innermost layer is a non-plasticized polyamide mixed with a minor portion of polyolefin corresponding to the main rubber constituent of the friction coat layer. The friction coating is formed of a rubber composite of two EPDM rubbers at a weight ratio of 50/50 and 75 parts by weight of carbon black. The intermediate fibrous reinforcement layer is formed of aramid. The external layer is an acrylate rubber comprising a blend of two ethylene acrylates at a weight ratio of 50/50 and 80 parts by weight of carbon black.
The Goodyear Tire & Rubber Company
Y B B Y F B B B B Y B B F B Y Y B B
Y10T B32B B32B Y10T F16L B32B B32B B60H B32B Y10T B32B B32B F16L B32B Y10T Y10T B32B B32B
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Pradeep Dattatraya Thomas Alan John Patrick
Nadkarni Brown Thomas