Title:
GAS IMPERMEABLE ELASTIC MEMBRANE AND FLUID ACCUMULATOR EQUIPPED THEREWITH
Document Type and Number:
Japanese Patent JP3049002
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a membrane for a liquid pressure accumulator showing excellent stability against high temp. ageing.
SOLUTION: This gas impermeable elastic membrane is a film constituted of a membrane 1 composed of a gas impermeable copolymer containing an -OH group and two layers 2, 3 arranged on both surfaces of the membrane 1 and composed of a flexible and elastic material containing a polyamide block and a polyether block. If necessary, rubber coating layers 4, 5 composed of a flexible and elastic material are arranged on at least one of the layers 2, 3 and, pref., polyether block amide layers are arranged on both surfaces of the membrane composed of EVOH and both surface of the whole are coated with X-NBR rubber.
Inventors:
Eve germain
Jean-Luc Bear
Christopher Rois
Jean-Luc Bear
Christopher Rois
Application Number:
JP5131898A
Publication Date:
June 05, 2000
Filing Date:
February 17, 1998
Export Citation:
Assignee:
Elf Atochem Society Anonymous
International Classes:
B32B25/08; B32B27/08; B32B27/28; B32B27/34; F15B1/02; F15B1/04; F15B1/10; (IPC1-7): B32B27/34; B32B25/08; B32B27/28; F15B1/02; F15B1/04
Domestic Patent References:
| JP2127436A | ||||
| JP5177785A | ||||
| JP5318685A |
Attorney, Agent or Firm:
Takashi Koshiba