Protected fiber optic waveguide

C - Chemistry – Metallurgy – 08 – L

Patent

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Details

117/187, 400/532

C08L 83/04 (2006.01) B29D 11/00 (2006.01) C03C 25/10 (2006.01) C09D 183/04 (2006.01) G02B 6/44 (2006.01)

Patent

CA 1308509

ABSTRACT A protected fiber optic waveguide comprising (I) a core; (II) a cladding disposed on, around, and in contact with the exterior surface of the core; and (III) a buffer coating disposed on, around, and in contact with the exterior surface of the cladding, the buffer coating comprising a polysiloxane material comprising: (a) a polydlmethylsiloxane and (b) a copolysiloxane comprising (i) a repeat unit selected from the group consisting of methylphenylsiloxane and diphenylsiloxane and (ii) a dimethylsiloxane repeat unit, the molar ratio of units (i) to units (ii) being between about 10:90 and about 80:20 if unit (i) is methylphenylsiloxane and between about 5:95 and about 50:50 if unit (i) is diphenylsiloxane; the weight ratio of polydimethylsiloxane (a) to copolysiloxane (b) being between about 5:95 and about 85:15.

576952

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