Organic material active in nonlinear optics

Details Organic material active in nonlinear optics Organic material active in nonlinear optics

1990-05-03

1991-12-24

Foelak, Morton

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From reactant having at least one -n=c=x group as well as...

528 49, 528 60, 528 70, 528 71, 528 73, 4284231, 526211, C08G 1808

Patent

active

050754092

ABSTRACT:
Marterials which are active in nonlinear optics, having a repeating unit of the following formula I: ##STR1## in which R.sub.1 and R.sub.2, are either identical or different, and denote a linear or branched methylenic chain, preferably containing from 2 to 6 carbon atoms; R.sub.3 is an aliphatic, aromatic or arylaliphatic hydrocarbon radical; R.sub.4 and R.sub.5, which are identical or different, denote a nitrogen atom or a CH radical, or alternatively R.sub.4 and R.sub.5 are both carbon with the R.sub.4 -R.sub.5 bond being a double or a triple bond; and Z.sub.1 and Z.sub.2, which are identical or different, denote an aromatic group wherein Z.sub.1 optionally contains one or more substituents R.sub.7 and wherein Z.sub.2 optionally contains one or more substituents R.sub.7 in addition to group A, each substituent R.sub.7 may be lower alkyl, halogen, amido, amino, sulfoxide, hydroxyl radical, alkoxy and trifluoromethyl; and A denotes an electron-acceptor group, with Z.sub.2 having one or more groups A.

REFERENCES:
patent: 4412054 (1983-10-01), Yamabe et al.
patent: 4603187 (1986-07-01), Choe
patent: 4746715 (1988-05-01), Dwoczjk et al.
patent: 4757130 (1988-07-01), DeMartino
patent: 4762899 (1988-08-01), Shikinami
patent: 4791187 (1988-12-01), Suling et al.
patent: 4983482 (1991-01-01), Ong et al.

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