Siemens Aktiengesellschaft

Bjoern Noethe

Helmut Saller

Sealing materials for longitudinal sealing of electrical and optical communication cables and cable connectors are comprised of a mixture of a polyol, a diisocyanate, a polymerization catalyst and a plasticizing component, such as a monofunctional aliphatic alcohol. Exemplary polyols are selected from the group consisting of a polyester-polyether-polyol or a polyester-polyol. An exemplary diisocyanate are selected from the group of hexamethylene-1, 6-diisocyanate and trimethyl hexamethylene diisocyanate and an exemplary plasticizing component is 2-octyldodecanol. Such sealing material can be provided within the interior of communication cables about the various elements thereof and/or within cable connectors or sleeves wherein individual elements of two or more communication cables are joined.

Sealing materials for electrical and optical communication cables and

An optical ribbon or flat cable comprised of a plurality of elongated optically transmissive elements arranged parallel to one another and enveloped within a soft cast synthetic resin, such as an isocyanate, an epoxide, an unsaturated polyester, a silicone, an ethylene derivative, etc., which is chemically hardened or cured about the optical elements at a relatively low temperature.

Optical ribbon cables

Optical fibers or bundles of fibers are uniformly coated with a high-boiling, viscous or thixotropic, optically clear liquid, such as polydimethylsiloxane, polymethylphenylsiloxane and then coated with a curable resin, such as urethane.

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Ebersberg, Germany

Bjoern Noethe