Optical material

Details Optical material Optical material

1989-02-03

1990-12-04

Maples, John S.

Compositions

Light transmission modifying compositions

Ultraviolet

252587, 526346, 526347, 5263471, 5263297, 5263292, 5263294, 526337, 526340, F21V 904, C08F 1202

Patent

active

049752235

ABSTRACT:
An optical material of a high refractive index is formed of a copolymer obtained by copolymerizing 3-40 wt. % of 4-isopropenylbiphenyl, 30-97 wt. % of a monofunctional aromatic monomer represented by the following formula (I) or (II) and 0-67 wt. % of another monomer copolymerizable with 4-isopropenylbiphenyl and the monofunctional aromatic monomer. ##STR1## wherein R means a hydrogen atom or methyl group, X denotes ##STR2## in which n stands for an integer of 0-3, Y is a halogen atom other than a fluorine atom, or a methyl, hydroxyl or methoxy group, and m stands for an integer of 0-3, with the proviso that Y may be different from each other when m is 2 or 3.

REFERENCES:
patent: 3882084 (1975-05-01), Tato et al.
patent: 4075237 (1978-02-01), Kleiner et al.
patent: 4888401 (1989-12-01), Kawaki et al.
Holdaway I. et al, Makromol, Chem., 179(8) 1939-1950 1978.
Baroni E. E., et al, Zh. Org. Khim. 7(11), 2395-2398, 1971.
Die Makromolekulare Chemie 62, p. 31-39, Jan. 1963.

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