Bleaching and dyeing; fluid treatment and chemical modification – Organic additive for dye composition – dye composition... – Carboxylic acid or salt thereof
Patent
1982-02-10
1983-05-24
Schofer, Joseph L.
Bleaching and dyeing; fluid treatment and chemical modification
Organic additive for dye composition, dye composition...
Carboxylic acid or salt thereof
8636, 523161, C09B 6700
Patent
active
043848710
ABSTRACT:
A dyestuff-containing microscopic capsule dispersion for record materials, which comprises at least one methine dyestuff represented by the general formula (I): ##STR1## wherein X means a phenyl, naphthyl, indolyl, .beta.-styryl, pyridyl, pyrimidyl or pyrazinyl group which may optionally be substituted, R.sub.1 -R.sub.6 are individually an amino, substituted amino, lower alkyl, cycloalkyl, lower alkoxy or lower haloalkyl group or a halogen or hydrogen atom, R.sub.7 and R.sub.8 are each a hydrogen or halogen atom or a lower alkoxy group and may be coupled together to form a ring, and said methine dyestuff contains at least one substituted amino group at a position para to the central methine group in the molecule thereof, said methine dyestuff being contained in microscopic capsules; and alkanolamine represented by the general formula (II): ##STR2## wherein R denotes a lower alkylene, hydroxyalkylene or poly(oxyalkylene) group, R' and R" mean individually a hydrogen atom, an alkyl, hydroxyalkyl, aryl, aralkyl, acyl, or .omega.-hydroxyalkyl-polyoxyalkylene group or a lower alkyl ether of an .omega.-hydroxyalkyl-polyoxyalkylene group, and R' and R" may be coupled together to form a ring, and/or a metal ion sequestering agent, said alkanolamine and/or metal ion sequestering agent being contained in said microscopic capsules and/or a liquid medium wherein said microscopic capsules are dispersed.
REFERENCES:
patent: 3318697 (1967-05-01), Shrewsbury
patent: 4001140 (1977-01-01), Foris et al.
patent: 4087376 (1978-05-01), Foris et al.
patent: 4089802 (1978-05-01), Foris et al.
patent: 4299411 (1981-11-01), Brockett
The Merck Index, p. 1241 (1976).
Akahori Hiroyuki
Asano Makoto
Hasegawa Kiyoharu
Tsujimoto Michihiro
Mitsui Toatsu Chemicals Inc.
Sarofim N.
Schofer Joseph L.
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