Stock material or miscellaneous articles – Composite – Of aldehyde or ketone condensation product
Patent
1992-12-24
1994-06-07
Sluby, P. C.
Stock material or miscellaneous articles
Composite
Of aldehyde or ketone condensation product
428501, 428419, 4284744, 428910, 428480, 534714, 534811, 534815, B32B 2742, C09B 3500
Patent
active
053188560
ABSTRACT:
Dyes having the specific structural formula (1) set out below, their copper salt dyes, water-soluble azo dyes containing the dyes or the copper salt dyes, and polarizing films containing the water-soluble azo dyes: ##STR1## wherein A means a benzene or naphthalene ring having a sulfone group or a base thereof, Y and Z individually denote a group of the following formula (a): ##STR2## wherein R.sup.2 is a hydrogen atom, a methyl group, a methoxyl group or an ethoxyl group and R.sup.3 is a methyl, methoxyl or ethoxyl group, R.sup.1 represents an amino, C.sub.1-4 alkylamino, C.sub.2-4 alkylcarboxyamino, benzoylamino or phenylamino group bonded to the 6 or 7 position of the naphthalene ring, and X denotes a hydrogen, sodium, potassium or lithium atom, with the proviso that Y and Z are different but, when both R.sup.2 s are hydrogen atoms and both R.sup.3 s are methoxyl groups, Y and Z may be the same.
REFERENCES:
patent: 4756953 (1988-07-01), Utsumi
patent: 5125969 (1992-06-01), Nishiwaki et al.
CA 115:38339y.
CA 112:218407r.
Imai Rihoko
Itoh Hisato
Misawa Tsutami
Ogiso Akira
Mitsui Toatsu Chemicals Incorporated
Sluby P. C.
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