Polypropylene compatible grease compositions for optical fiber c

Details Polypropylene compatible grease compositions for optical fiber c Polypropylene compatible grease compositions for optical fiber c

Filed on

1995-07-12

Date issued

1997-09-30

Examiner

Michl, Paul R.

Patent Class

Synthetic resins or natural rubbers -- part of the class 520 ser

SubClass

Synthetic resins

SubSubClass

Processes of preparing a desired or intentional composition...

Other Related Categories

524445, 524492, 524493, 524310, 428380, 428383, 385100, 252 28, 174110R, C08K 334, C08K 511, C10M11310, G02B 644

Type

Patent

Status

active

Patent number

056726406

Description

ABSTRACT:
A grease composition for use as a cable filling material which contains about 25 to 75 parts by weight of castor oil or a ricinoleate polyol, about 13 to 71 parts by weight of a hydroxy-terminated polymer of polymerized castor oil or the reaction product of a polyisocyanate compound and castor oil or a ricinoleate polyol, and about 4 to 12 parts by weight of colloidal particles such as silica, clay or mixtures thereof. Optionally, an antioxidant component can be added to impart high temperature resistance, a bleed inhibitor, typically of a rubber component, can be added to improve bleed resistance, a water blocking agent of a superabsorbent compound can be added to reduce water transmission, microspheres can be added to reduce the weight of the formulation, and/or conventional additives such as fungicides, bacteriocides etc. can be included. The invention also relates to an article of manufacture such as a cable having a sheath surrounding a plurality of optical fibers therein, with one of the grease compositions of the invention located therein.

REFERENCES:
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patent: 4596743 (1986-06-01), Brauer et al.
patent: 4666968 (1987-05-01), Downey et al.
patent: 4701016 (1987-10-01), Gartside, III et al.
patent: 4812533 (1989-03-01), Simone et al.
patent: 4867526 (1989-09-01), Arroyo
patent: 5082719 (1992-01-01), Arroyo
patent: 5147921 (1992-09-01), Mallo
patent: 5163115 (1992-11-01), Sheu
patent: 5348669 (1994-09-01), Brauer et al.
Technical Bulletin, Castor Oil & Derivatives, CasChem, Inc., 1995.

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