Gas-impermeable resinous composition

Details Gas-impermeable resinous composition Gas-impermeable resinous composition

1992-01-17

1993-06-29

Kight, III, John

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525178, 525184, 138123, 138124, 138125, 138126, 138132, 138137, 138138, 138141, 138153, 528335, 528339, 428 361, 428 362, 428 368, 428 369, C08L 2904, C08L 7706, F16L 912

Patent

active

052235718

ABSTRACT:
A refrigerant-transport hose having an inner tube, an outer tube located radially outwardly of the inner tube, and a reinforcing fiber layer interposed between the inner and outer tubes, the reinforcing fiber layer and the inner and outer tubes providing an integral tubular body, and inner tube including a gas-impermeable resinous layer formed of a composition containing a polyamide resin produced by reaction of hexamethylene diamine and an aliphatic dicarboxylic acid having eight to sixteen carbon atoms.

REFERENCES:
patent: 2130948 (1938-09-01), Carothers
patent: 3549516 (1970-12-01), Kirkaldy
patent: 3857754 (1974-12-01), Hirata et al.
patent: 4633912 (1987-01-01), Pilkington et al.
patent: 4734305 (1988-03-01), Sugimoto et al.
patent: 4749744 (1988-06-01), Uejo et al.
patent: 4881576 (1989-11-01), Kitami et al.

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