Cable sealed with a polyurethane resin and sealing process of th

Details Cable sealed with a polyurethane resin and sealing process of th Cable sealed with a polyurethane resin and sealing process of th

1997-02-04

1998-11-17

Ngo, Hung N.

Optical waveguides

Optical transmission cable

Tightly confined

385105, G02B 644

Patent

active

058388630

ABSTRACT:
This invention relates to a cable whose inner opening space has been sealed with a polyurethane resin formed with a polyurethane resin-forming sealing material comprising components (A) and (B). (A): a component comprising a dispersion (1) of a water-insoluble water absorbent resin (D) or its hydrogel in a polyol (C), wherein said resin (D) is formed by polymerizing in the polyol (C) a water soluble monomer or its precursor and crosslinking agent and/or polysaccharide; and (B): a component comprising an organic polyisocyanate (2); and sealing process of the same. This invention provides a cables having an excellent water preventing property without the risk of falling-off of the sealing material at the time of cable connection.

REFERENCES:
patent: 4720165 (1988-01-01), Tokuda et al.
patent: 4726649 (1988-02-01), Funaki et al.
patent: 5217808 (1993-06-01), Cobb
patent: 5463711 (1995-10-01), Chu
patent: 5672640 (1997-09-01), Brauer

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