Oligophosphazene compound

Details Oligophosphazene compound Oligophosphazene compound

2011-03-29

2011-03-29

Gulakowski, Randy (Department: 1766)

Organic compounds -- part of the class 532-570 series

Organic compounds

Phosphorus esters

C528S399000, C528S075000, C528S486000, C526S262000, C526S275000, C526S276000, C548S956000

Reexamination Certificate

active

07915441

ABSTRACT:
The oligophosphazene compound capable of forming a polymer which can be used as an optical material is a cyclic or linear compound including constituent units represented by the general formula (I) below in a range from 3 to 14. In the general formula (I), k is an integer of 1 to 4 and X1is one selected from the group consisting of an oxygen atom, a sulfur atom, an NH group and an NCH3group. A polymer made of this oligophosphazene compound exhibits high transparency and a high refractive index and is also less likely to cause optical dispersion, and thus it can be used as an optical lens, a retardation film, a light transmission body and other optical moldings.

REFERENCES:
patent: 5705668 (1998-01-01), Odello et al.
patent: 7-198967 (1995-08-01), None
Olshavsky et al., Macromolecules 1997, vol. 30, No. 14, pp. 4179-4183.
Allcock et al., Inorganic Chemistry Jun. 1966, vol. 5, No. 6, pp. 1016-1020.

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