Light transmitting filament

Details Light transmitting filament Light transmitting filament

1974-11-22

1976-11-23

Lesmes, George F.

Stock material or miscellaneous articles

Coated or structually defined flake, particle, cell, strand,...

Rod, strand, filament or fiber

428378, 428394, 428421, 428422, 428910, 428918, 428520, 264 1, 264171, 350 96R, 526328, 526245, D02G 300, B32B 2700

Patent

active

039938344

ABSTRACT:
There is provided a filament of improved light transmission having a sheath-core composite structure formed of a methyl methacrylate polymer core material and a fluorine-containing polymer sheath material. The light transmitting filament is characterized in that the methyl methacrylate polymer core material is prepared by the specific procedure of continuous bulk polymerization and subsequent removal of volatile contents, wherein the polymerization is performed in a continuously and thoroughly stirred reaction vessel at a low catalyst concentration and a relatively high temperature and with improved conversion. The light transmitting filament possesses an absorption coefficient (k) of no greater than 6 .times. 10.sup.-.sup.3 cm.sup.-.sup.1.

REFERENCES:
patent: 3647612 (1972-03-01), Schrenk
patent: 3801429 (1974-04-01), Schrenk
patent: 3900453 (1975-08-01), Shimada
patent: 3930103 (1975-12-01), Chimura

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