Refrigerant transportation hose

• US 20060011250A1
• Filed: 07/14/2005
• Published: 01/19/2006
• Est. Priority Date: 07/15/2004
• Status: Active Grant

• Current Assignee: Sumitomo Riko Company Limited.
• Original Assignee: Tokai Rubber Industries Limited
• Inventors: Ikemoto, Ayumu, Arima, Tetsuya
• Granted Patent: US 7,059,354 B2
• Time in Patent Office: Days
• US Class Current: 138/126
• CPC Class Codes: B60H 1/00571 of liquid ducts, e.g. for coolant liquids or refrigerants
• CPC Class Codes: F16L 11/04 made of rubber or flexible plastics
• CPC Class Codes: F16L 11/11 with corrugated wall F16L11/24 takes precedence
• CPC Class Codes: F16L 2011/047 with a diffusion barrier layer
• CPC Class Codes: Y10T 428/139 Open-ended, self-supporting conduit, cylinder, or tube-type article

Abstract

A refrigerant transportation hose having excellent processability and durability, as well as high resistance to gas permeation (gas barrier properties) and adequate flexibility. The refrigerant transportation hose containing a tubular rubber layer in which refrigerant is circulated, the tubular rubber layer is formed by a material consisting essentially of components (A) to (C): (A) at least one rubber of butyl rubber and halogenated butyl rubber; (B) polybutene; and (C) a white filler.

Claims

1. A refrigerant transportation hose containing a tubular rubber layer in which refrigerant is circulated, the tubular rubber layer is formed by a material consisting essentially of components (A) to (C):

(A) at least one rubber of butyl rubber and halogenated butyl rubber;

(B) polybutene; and

(C) a white filler.

2. A refrigerant transportation hose according to claim 1, wherein the component (B) is present at 3 parts by weight or more relative to 100 parts by weight of the component (A).