Refrigerant transporting hose having inner tube including resin

Details Refrigerant transporting hose having inner tube including resin Refrigerant transporting hose having inner tube including resin

1993-08-06

1994-09-20

Nold, Charles R.

Stock material or miscellaneous articles

Hollow or container type article

Polymer or resin containing

428 362, 428 368, 428 3691, 525 66, 138125, 138126, 138127, 285 55, 285256, F16L 1108

Patent

active

053487796

ABSTRACT:
A refrigerant transporting hose having a laminar structure including an inner tube consisting of at least one layer, an outer tube disposed radially outwardly of and coaxially with the inner tube, and a reinforcing fiber layer interposed between the inner and outer tubes. The inner tube includes a resin layer formed of a resin composition which consists of a blend of modified polyolefin and polyamide resin, and 1-10% by weight of .epsilon.-caprolactam. A proportion by weight of the modified polyolefin to the polyamide resin is selected within a range between 40/60 and 10/90. The hose may have a sealing layer formed on the inner surface of the inner tube. The sealing layer consists of a chlorinated elastomer containing a dispersion of an acid receptive agent. Alternately, the sealing layer may be provided on the outer surface of a hose connector nipple.

REFERENCES:
patent: 4018460 (1977-04-01), Morris et al.
patent: 4690435 (1987-09-01), Manning et al.
patent: 4907625 (1990-03-01), Ito et al.
patent: 4994524 (1991-02-01), Udipi
World Patents Index Latest, Week 8732, Derwent Publications, Ltd., London, GB; AN 87-223656 & JP-A-62 147 188 (UBE Industries) Jul. 1, 1987.

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