Polymer of vinyl-biphenyl derivative adapted for optical use

Details Polymer of vinyl-biphenyl derivative adapted for optical use Polymer of vinyl-biphenyl derivative adapted for optical use

1989-06-22

1992-01-21

Henderson, Christopher

Optical: systems and elements

Lens

526286, 526289, 5262929, 526293, 526296, 526313, 359831, G02B 104, C08F22804, C08F21614

Patent

active

050823582

ABSTRACT:
A polymer of vinyl-biphenyl derivative comprising recurring units of the formula: ##STR1## wherein X is Cl or Br; a is an integer of 0-4; Y is --CH.sub.3, --OH, --OR, --SR, --SOR, --SO.sub.2 R, --SeR, --SeOR, --SeO.sub.2 R, --TeR, --TeOR, or --TeO.sub.2 R, wherein R is alkyl capable of having a substituent, aryl capable of having a substituent, or ##STR2## and Z is --CH.sub.2 --, --C(CH.sub.3).sub.2 --, --O--, --S--, --SO--, --SeO.sub.2 --, --Te--, --TeO--, or --TeO.sub.2 --; b and c are integers giving the sum of 1 to 5, and c is 1 or more. The polymer has a high refractive index and an excellent transparency. Further, the polymer can have a variable refractive index at a constant Abbe's number.

REFERENCES:
patent: 4412050 (1983-10-01), Mehta
patent: 4417064 (1983-11-01), Mehta
patent: 4518756 (1985-05-01), Yoshida
patent: 4578445 (1986-03-01), Sakagami
Chemical Abstract No. 105(24), 209577z (1986).
Chemical Abstract No. 105(26), 227553t (1986).
Chemical Abstract No. 103(14), 105445x (1985).
Chemical Abstract No. 103(6), 124106f (1985).
Chemical Abstract No. 69(24), 97212f (1968).
Chemical Abstract No. 71(22), 102258y (1969).

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