Optical fiber coated with an organopolysiloxane curable with act

Details Optical fiber coated with an organopolysiloxane curable with act Optical fiber coated with an organopolysiloxane curable with act

1986-11-12

1988-03-29

Lesmes, George F.

Stock material or miscellaneous articles

Composite

Of bituminous or tarry residue

428375, 428391, 428426, 428429, 522 99, 528 26, 528 32, 427163, 427165, G02B 600

Patent

active

047339420

ABSTRACT:
The coated optical fiber of the invention is prepared by providing a coating layer of an ultraviolet-curable organopolysiloxane or a composition comprising the same and irradiating the coating layer with ultraviolet. Specifically, each of the terminal silicon atoms of the organopolysiloxane, which preferably has a linear molecular structure, has two or more ethylenically unsaturated polymerizable groups bonded thereto through an oxygen atom, such as CH.sub.2 .dbd.CHCOOCH.sub.2 CH.sub.2 --, [CH.sub.2 .dbd.C(CH.sub.3)COOCH.sub.2 ].sub.3 C--CH.sub.2 --and (CH.sub.2 .dbd.CHCOOCH.sub.2).sub.2 C(C.sub.2 H.sub.5)CH.sub.2 --. By virtue of this unique molecular structure of the organopolysiloxane, the coating layer is rapidly cured by ultraviolet irradiation to give a cured coating layer exhibiting very low water absorption and small temperature dependency of the Young's modulus at low temperatures.

REFERENCES:
patent: 3933678 (1976-01-01), Graham
patent: 4270840 (1981-06-01), Uchida et al.
patent: 4322473 (1982-03-01), Hafner et al.
patent: 4344669 (1982-08-01), Uchida et al.
patent: 4380367 (1983-04-01), Suzuki
patent: 4505542 (1985-03-01), Clarke

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