Stock material or miscellaneous articles – Liquid crystal optical display having layer of specified... – With charge transferring layer of specified composition
Patent
1994-08-25
1996-03-26
Thomas, Alexander S.
Stock material or miscellaneous articles
Liquid crystal optical display having layer of specified...
With charge transferring layer of specified composition
4284735, 528353, 359 75, 564322, G02F 11337, C08G 6926, C07C21154
Patent
active
055018840
ABSTRACT:
The present invention is to provide diamino compounds useful to polyamide raw materials for production of liquid crystal alignment layers having excellent voltage holding ratios without development of image-sticking phenomena, a method for producing the compounds and liquid crystal display devices equipping the liquid crystal alignment layers.
The Diamino compounds are represented by the general formula (1): ##STR1## wherein R indicates hydrogen or an alkyl group having 1 to 8 carbon atoms, further, X, Y and Z indicate hydrogen, an alkyl group having 1 to 3 carbon atoms or fluorine, respectively, and a part or all of them may be the same or different, and the positions of these substitutive groups may be ortho positions or meta positions.
REFERENCES:
patent: 2883365 (1959-04-01), Mathes
patent: 3247199 (1966-04-01), Marxer et al.
patent: 5008456 (1991-04-01), Marxer et al.
Nigorikawa, Chemical Abstracts, vol. 110 (1989), p. 685--Abstract No. 222725u.
Sutyagina et al., Chemical Abstracts, vol. 54 (1959)--Abstract No. 12828g.
Abe Yukino
Hayakawa Masaharu
Murata Shizuo
Nakayama Minoru
Sawai Toshiya
Chisso Corporation
Thomas Alexander S.
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