LIQUID CONTAINER CELLS WITH CURED NITRILE INNER LAYER AND CURED POLYETHER-POLYURETHANE ELASTOMER OUTSIDE LAYER

• US 3,616,189 A
• Filed: 12/17/1968
• Issued: 10/26/1971
• Est. Priority Date: 12/17/1968
• Status: Expired due to Term

• Current Assignee: George B. Harr
• Original Assignee: George B. Harr
• Inventors: Harr, George B.
• Primary Examiner(s): Goolkasian, John T.
• Assistant Examiner(s): Cosby, C. B.
• Application Number:
  US04/787,300
• Time in Patent Office: 1,043 Days
• Field of Search: 413/763 357/499 161/405,190,256 150/.5
• US Class Current: 428/215
• CPC Class Codes: B32B 2305/72 Cured, e.g. vulcanised, cross-linked
• CPC Class Codes: B32B 2309/105 Thickness
• CPC Class Codes: B32B 2439/00 Containers; Receptacles closures therefor B32B2435/00
• CPC Class Codes: B32B 25/08 of synthetic resin
• CPC Class Codes: B32B 25/14 comprising synthetic rubber copolymers B32B25/18 and B32B25/20 take precedence
• CPC Class Codes: B32B 27/08 of synthetic resin
• CPC Class Codes: B32B 27/34 comprising polyamides
• CPC Class Codes: B32B 27/40 comprising polyurethanes
• CPC Class Codes: B32B 7/12 using interposed adhesives or interposed materials with bonding properties
• CPC Class Codes: B60K 15/03177 made of non-metallic material, e.g. plastics, or of a combination of non-metallic and metallic material B60K15/03006 takes precedence
• CPC Class Codes: B60K 2015/03407 to protect tanks against projectiles
• CPC Class Codes: B64D 37/02 Tanks tanks constructed integrally with aircraft wings B64C; shape or construction of tanks per se B65D
• CPC Class Codes: Y10S 220/905 Flexible fuel tank for a vehicle
• CPC Class Codes: Y10S 428/912 Puncture healing layer
• CPC Class Codes: Y10T 428/24967 Absolute thicknesses specified
• CPC Class Codes: Y10T 428/26 Web or sheet containing structurally defined element or component, the element or component having a specified physical dimension
• CPC Class Codes: Y10T 428/264 Up to 3 mils
• CPC Class Codes: Y10T 428/31562 Next to polyamide [nylon, etc.]
• CPC Class Codes: Y10T 428/31583 Nitrile monomer type [polyacrylonitrile, etc.]
• CPC Class Codes: Y10T 428/31587 Hydrocarbon polymer [polyethylene, polybutadiene, etc.]
• CPC Class Codes: Y10T 428/31739 : Nylon type
• CPC Class Codes: Y10T 428/31931 : Polyene monomer-containing
• CPC Class Codes: Y10T 428/31935 : Ester, halide or nitrile of addition polymer
• CPC Class Codes: Y10T 442/3911 : Natural or synthetic rubber sheet or film

Abstract

Fuel cells are made with cured nitrile rubber on the inner surface and cured polyurethane on the outer surface. A nylon barrier may be provided between the two. The polyurethane layer is preferably prepared by spraying a curing agent and polyurethane precursor through a nozzle which mixes the two.

Claims

2. The fuel cell of claim 1 in which the butadiene-acrylonitrile rubber is formed from a solution.

3. The fuel cell of claim 1 in which the butadiene-acrylonitrile rubber is preformed.

4. The fuel cell of claim 1 in which said polyurethane is adjacent said butadiene-acrylonitrile rubber.

5. The fuel cell of claim 4 which is reinforced with fabric between the polyurethane and the butadiene-acrylonitrile rubber.

6. The fuel cell of claim 1 in which a barrier layer of nylon is interposed between said polyurethane and said butadiene-acrylonitrile rubber and adhered thereto by adhesive.

7. The fuel cell of claim 1 in which the butadiene-acrylonitrile rubber layer is substantially 0.008 inch thick, each adhesive layer is substantially 0.001 inch thick, the polyurethane layer is substantially 0.015 to 0.035 inch thick and there is a nonporous nylon barrier about 0.001 to 0.002 inch thick between the butadiene-acrylonitrile rubber and the polyurethane.