Retractile cord having a vulcanized ethylene-propylene-diene terpolymer jacket

• US 3,324,229 A
• Filed: 11/04/1963
• Issued: 06/06/1967
• Est. Priority Date: 11/04/1963
• Status: Expired due to Term

• Current Assignee: Barclaysamerican/Business Credit Incorporated
• Original Assignee: John H. Ingmanson
• Inventors: Ingmanson, John H.
• Application Number:
  US04/321,008
• Time in Patent Office: 1,310 Days
• US Class Current: 174/69
• CPC Class Codes: C08K 3/04 Carbon
• CPC Class Codes: C08K 3/06 Sulfur
• CPC Class Codes: C08K 3/22 of metals
• CPC Class Codes: C08K 5/0025 Crosslinking or vulcanising agents; including accelerators
• CPC Class Codes: C08K 5/09 Carboxylic acids; Metal salts thereof; Anhydrides thereof
• CPC Class Codes: C08L 23/16 Elastomeric ethene-propene or ethene-propene-diene copolymers, e.g. EPR and EPDM rubbers
• CPC Class Codes: C08L 2312/00 Crosslinking
• CPC Class Codes: C08L 91/00 Compositions of oils, fats or waxes; Compositions of derivatives thereof
• CPC Class Codes: H01B 3/441 from alkenes
• CPC Class Codes: H01B 7/065 having the shape of an helix

Claims

1. A RETRACTILE ELECTRICAL CORD COMPRISING, IN COMBINATION, AT LEAST ONE ELECTRICAL CONDUCTOR AND ELASTOMERIC JACKET FORMED AROUND SAID CONDUCTOR, SAID CORD BEING FORMED IN A HELICAL CONFIGURATION AND SAID JACKET HAVING A COMPOSITION COMPRISING THE CURED PRODUCT OF (A) A TERPOLYMER BASE MATERIAL COMPOSED BY WEIGHT OF (1) FROM 45% TO 75% PROPYLENE (2) FROM 1% TO 3% OF A NON-CONJUGATED DIENE, AND (3) THE REMAINDER ETHYLENE, 100 PARTS BY WEIGHT OF SAID BASE MATERIAL BEING COMPOUNDED WITH (B) FROM 50-200 PARTS BY WEIGHT CARBON BLACK, (C) FROM 20 TO 100 PARTS BY WEIGHT OF PLASTICIZER TAKEN FROM THE GROUP CONSISTING OF (1) A NAPHTHENIC BASE PETROLEUM OIL AND (2) A PARAFFINIC BASE PETROLEUM OIL, (D) FROM 4 TO 12 PARTS BY WEIGHT OF ACTIVATOR TAKEN FROM THE GROUP CONSISTING OF (1) ZINC OXIDE AND (2) STEARIC ACID, (E) FROM 1 TO 3 PARTS BY WEIGHT OF SULFUR, AND (F) FROM 1-3 PARTS BY WEIGHT OF ACCELERATOR TAKEN FROM THE GROUP CONSISTING OF (1) TETRAMETHYTHIURAM MONOSULFIDE AND (2) 2-MERCAPTOBENZOTHIAZOLE.