Azo compound and polarizing film

Details Azo compound and polarizing film Azo compound and polarizing film

1997-10-15

1999-09-14

Krass, Frederick

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

Organic compounds

Azo

534689, 524159, 524557, 430157, 430163, 430171, 430176, 430183, 430563, 428 1, 4271631, 427171, 427172, 427173, 264 78, C08K 523, C09B 5604

Patent

active

059524774

ABSTRACT:
The present invention is concerned with a novel azo compound represented by formula (1), (2) or (3), a water-soluble dye comprising this azo compound, and a polarizing film containing this azo compound. The obtained polarizing film has high hydrothermoresistance and a high polarization degree and is excellent in optical characteristics: ##STR1## wherein each of the groups is defined.

REFERENCES:
patent: 4116861 (1978-09-01), Aftergut et al.
patent: 4118182 (1978-10-01), Smith
Chemical Abstracts, vol. 102, p. 93, 26357w, 1985.
Chemical Abstracts, vol. 104, p. 77, 70283j, 1986.
Chemical Abstracts, vol. 104, p. 53, 69953w, 1986.
Chemical Abstracts, vol. 115, p. 706, 266442g, 1991.
Chemical Abstracts, vol. 116, p. 683, 224369d, 1992.
Chemical Abstracts, vol. 113:61305b (1990).

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