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1. (WO1991017551) ELECTRICAL INSULATING MATERIAL
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1991/017551 International Application No.: PCT/GB1991/000661
Publication Date: 14.11.1991 International Filing Date: 26.04.1991
Chapter 2 Demand Filed: 14.11.1991
IPC:
H01B 3/44 (2006.01) ,H01B 7/02 (2006.01) ,H01B 7/29 (2006.01)
H ELECTRICITY
01
BASIC ELECTRIC ELEMENTS
B
CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
3
Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
18
mainly consisting of organic substances
30
plastics; resins; waxes
44
vinyl resins; acrylic resins
H ELECTRICITY
01
BASIC ELECTRIC ELEMENTS
B
CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
7
Insulated conductors or cables characterised by their form
02
Disposition of insulation
H ELECTRICITY
01
BASIC ELECTRIC ELEMENTS
B
CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
7
Insulated conductors or cables characterised by their form
17
Protection against damage caused by external factors, e.g. sheaths or armouring
29
by extremes of temperature or by flame
Applicants:
W.L. GORE & ASSOCIATES, INC. [US/US]; 551 Paper Mill Road P.O. Road Box 9206 Newark, DE 19714-9206, US (AllExceptUS)
W.L. GORE & ASSOCIATES (UK) LIMITED [GB/GB]; 1 Bell Yard London WC2A 2JP, GB (AllExceptUS)
GELLAN, Andrea [GB/GB]; GB (UsOnly)
MORTIMER, William, Patrick, Jr. [US/US]; US (UsOnly)
Inventors:
GELLAN, Andrea; GB
MORTIMER, William, Patrick, Jr.; US
Agent:
HORNER, Martin, Grenville; Cruikshank & Fairweather 19 Royal Exchange Square Glasgow G1 3AE, GB
Priority Data:
515,30227.04.1990US
9009407.927.04.1990GB
Title (EN) ELECTRICAL INSULATING MATERIAL
(FR) MATERIAU D'ISOLATION ELECTRIQUE
Abstract:
(EN) An electrical insulating composite material comprises an intimate admixture of (a) 5-90 weight percent of a thermoplastic copolymer of tetrafluoroethylene and perfluoro (propyl vinyl ether); and (b) 90-5 weight percent of coagulated dispersion type polytetrafluoroethylene (PTFE), or of porous expanded PTFE. Tape made from the composite material may be porous expanded tape or non-porous tape. The tape is wrapped around a conductor (C) and sintered at 320-450 °C. A dual-wrap construction having layers (A, B) of both porous expanded tape and of non-porous tape give particularly good dynamic cut-through and scrape resistance properties.
(FR) Matériau composite d'isolation électrique comportant un mélange intime de (a) de 5 à 90 % en poids d'un copolymère thermoplastique de tétrafluoroéthylène et de perfluoro (propyle vinyle éther); et (b) de 90 à 5 % en poids de polytétrafluoroéthylène (PTFE) de type dispersion coagulée, ou de PTFE expansé poreux. Un ruban constitué du matériau composite peut être non poreux ou expansé et poreux. On enroule le ruban autour d'un conducteur (C) et on le fritte à une température comprise entre 320 et 450 °C. Une configuration à deux rubans enroulés possédant des couches (A, B) à la fois de ruban expansé poreux et de ruban non poreux assure d'excellentes caractéristiques de résistance dynamique aux coupures et aux éraflures.
Designated States: GB, JP, US
European Patent Office (AT, BE, CH, DE, DK, ES, FR, GB, GR, IT, LU, NL, SE)
Publication Language: English (EN)
Filing Language: English (EN)
Also published as:
EP0526556