WATER STOPPING AGENT FOR CABLES, WATER-STOPPING METHOD USING SAME, AND WATER-STOPPING TAPE CONTAINING SAME

Title:

WATER STOPPING AGENT FOR CABLES, WATER-STOPPING METHOD USING SAME, AND WATER-STOPPING TAPE CONTAINING SAME

Document Type and Number:

WIPO Patent Application WO/1988/010001

Kind Code:

A1

Abstract:

A water-stopping agent for optical or electric cables, a water-stopping method using same, and a water-stopping tape containing same are disclosed. The water-stopping agent comprises a crosslinked polymer containing at least 0.5 mg equivalent/g sulfonic acid group or its salt and at least 1.0 mg equivalent/g ionizable group. The water-stopping tape is obtained by fixing the water-stopping agent on the surface of film or sheet with an organic polymer binder. The water-stopping process comprises filling the water-stopping agent or tape in a sheath of cable.

Inventors:

KOBAYASHI HIROYA (JP)
SHIMOMURA TADAO (JP)
OKAMURA KAZUHIRO (JP)
SANO YOSHINORI (JP)

Application Number:

PCT/JP1988/000554

Publication Date:

December 15, 1988

Filing Date:

June 08, 1988

Export Citation:

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Assignee:

NIPPON CATALYTIC CHEM IND (JP)

International Classes:

B01J20/26; G02B6/44; H01B7/28; H01B7/282; H01B7/288; (IPC1-7): H01B7/28; B01J20/26

Foreign References:

EP0156541A2	1985-10-02
JPS6140683B2	1986-09-10
JPS62144748A	1987-06-27
US4002819A	1977-01-11
JPS5969432U	1984-05-11
JPS5824908U	1983-02-17

Other References: