Non-linear optically active polycarbonate

Details Non-linear optically active polycarbonate Non-linear optically active polycarbonate

1994-09-26

1996-12-24

Mosley, Terressa M.

Optical waveguides

Having nonlinear property

252582, 252587, 252589, 385131, 385143, 385145, 428412, 525463, 525467, 528196, 528199, 528201, G02B 600, C08G 6400

Patent

active

055880835

ABSTRACT:
The invention pertains to a non-linear optically active (NLO) side chain polycarbonate and to NLO active waveguides containing said polycarbonate. Waveguides containing this NLO polycarbonate have a low loss of signal. Polycarbonates based on bischloroformates of hexafluorobisphenol A, hexafluorotetrabromobisphenol A and bisphenol S or deuterated bisphenol A or sulphonylbiphenol are especially preferred within the framework of the invention: they were found to give an exceptionally low loss of signal. The invention further pertains to cross-linkable and already cross-linked polycarbonates. Especially preferred polycarbonates according to the invention are those where the diol comprises a rigid donor group. These polycarbonates have a high Tg, which renders them thermally stable.

REFERENCES:
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patent: 5208299 (1993-05-01), Bales et al.
Optics Letters, vol. 17, No. 21, Nov. 1, 1992, pp. 1506-1508.
Angew. Makromol. Chem. 183 (1990), pp. 251-252.
Encyclopedia of Polymer Science and Engineering (Wiley), vol. 11, pp. 680-687. (1995).
Kirk-Othmer Encyclopedia of Chemical Technology (Wiley), vol. 18, pp. 491-492 (1982).
Comp. Pol. Sci.: The Synthesis, Characterization, Reactions and Applications of Polymers, vol. 5 (Pergamon Press) Ch. 20, pp. 345-356. (1986).
Derwent Pat. Abstr. 88-311005/44 (1988), abstracting JP 63/228,135.

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