Optical fibre element comprising an optical fibre housing consti

Details Optical fibre element comprising an optical fibre housing consti Optical fibre element comprising an optical fibre housing consti

Filed on

1991-11-08

Date issued

1993-02-09

Examiner

Ullah, Akm E.

Patent Class

Optical waveguides

SubClass

Optical transmission cable

Other Related Categories

524291, G02B 644

Type

Patent

Status

active

Patent number

051858410

Description

ABSTRACT:
The optical fibre element comprises at least one optical fibre housing constituted by a polyolefin material having at least one additive which protects it against degradation due to oxidation, heat or the proximity of metals, and (b) at least one H.sub.2 -absorbing buffer. The additive is selected from the group comprising anti-oxidants, stabilizers and metal deactivators which cause a reduction in the hydrogen absorption capacity of less than 30% in the, or each, H.sub.2 -absorbing buffer when the, or each, buffer has been in contact with said polyolefin containing the, or each, additive for 30 days at 100.degree. C. in an air atmosphere saturated with water vapor at 150 mbar.

REFERENCES:
patent: 4238575 (1980-12-01), Kleiner et al.
patent: 4590231 (1986-05-01), Seltzer et al.
patent: 4703073 (1987-10-01), Winter et al.
patent: 4824883 (1989-04-01), Walters
patent: 4876300 (1989-10-01), Seltzer et al.

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