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US 3,958,287 AGranted
Dischargeable black dyeing on acid modified polyester fiber
AssigneeSumitomo Chemical Company, Limited
InventorsTetsuo Okaniwa, Sadaharu Abeta
Life of this patent
Estimating the term…
Abstract
A process to dye acid modified polyester fibers, such as Dacron T-64 fibers, a dischargeable black by dyeing the fibers with a mixture of six different basic dyes.
Claims9
A process for dyeing acid modified polyester fibers a black comprising contacting said polyester fibers with a dye bath containing a combination of dyes comprising:
- 1. at least one dye of the formula (A):
- ##SPC15##
- wherein R.sub.1 is a C.sub.1 -C.sub.3 alkyl group which may be unsubstituted or substituted with a hydroxy group of a C.sub.1 -C.sub.4 alkoxy group;
- R.sub.2 is a hydrogen atom or a C.sub.1 -C.sub.3 alkyl group;
- R.sub.3 and R.sub.4, which may be the same or different, each is a cyclohexyl group, a C.sub.1 -C.sub.3 alkyl group which may be unsubstituted or substituted with a hydroxy group or a C.sub.1 -C.sub.4 alkoxy group, a phenyl group or a C.sub.7 -C.sub.8 aralkyl group, which phenyl or aralkyl group may be unsubstituted or substituted with a halogen atom;
- and X.sup.- is an anion;
- and
- 2. at least one dye of the formula (B):
- ##SPC16##
- wherein R.sub.5 is a hydrogen atom, a C.sub.1 -C.sub.12 alkyl group or a C.sub.7 -C.sub.8 aralkyl group, which alkyl or aralkyl group may be unsubstituted or substituted with a halogen atom, a hydroxy group or a C.sub.1 -C.sub.4 alkoxy group, and which alkyl group or the alkyl moiety of the aralkyl group may contain a --SO.sub.2 NH--, --CONH-- or --CO-- group in the chain thereof;
- R.sub.6 is a C.sub.1 -C.sub.3 alkyl group or a C.sub.7 -C.sub.8 aralkyl group which alkyl or aralkyl group may be unsubstituted or substituted with a halogen atom, a hydroxy group or a C.sub.1 -C.sub.4 alkoxy group;
- and X.sup.- is an anion;
- and of the formula (C):
- ##SPC17##
- wherein R.sub.7 and R.sub.8, which may be the same or different, each is a hydrogen atom, a halogen atom, a C.sub.1 -C.sub.3 alkyl group or a cyano group;
- R.sub.9 is a C.sub.1 -C.sub.3 alkyl group or a C.sub.7 -C.sub.8 aralkyl group;
- R.sub.10 is a C.sub.1 -C.sub.3 alkylene group;
- R.sub.11 is a C.sub.1 -C.sub.3 alkyl group;
- and X.sup.- is an anion;
- and of the formula (D):
- ##SPC18##
- wherein R.sub.12 is a C.sub.1 -C.sub.3 alkyl group;
- R.sub.13 is a C.sub.1 -C.sub.3 alkylene group;
- R.sub.14, R.sub.15, R.sub.16 and R.sub.17, which may be the same or different, each is a hydrogen atom, a halogen atom or a cyano group;
- R.sub.18 and R.sub.19, which may be the same or different, each is a hydrogen atom, a C.sub.1 -C.sub.3 alkyl group or a C.sub.7 -C.sub.8 aralkyl group, which alkyl or aralkyl group may be unsubstituted or substituted with a halogen atom, a cyano group or a hydroxy group;
- and X.sup.- is an anion.
23 more elements
A black dye comprising a combination of,
- 1. at least one dye of the formula (A):
- ##SPC29##
- wherein R.sub.1 is a C.sub.1 -C.sub.3 alkyl group which may be unsubstituted or substituted with a hydroxy group or a C.sub.1 -C.sub.4 alkoxy group;
- R.sub.2 is a hydrogen atom or a C.sub.1 -C.sub.3 alkyl group;
- R.sub.3 and R.sub.4, which may be the same or different, each is a cyclohexyl group, a C.sub.1 -C.sub.3 alkyl group which may be unsubstituted or substituted with a hydroxy group or a C.sub.1 -C.sub.4 alkoxy group, a phenyl group or a C.sub.7 -C.sub.8 aralkyl group, which phenyl or aralkyl groyp may be unsubstituted or substituted with a halogen atom;
- and X.sup.- is an anion;
- and
- 2. at least one dye of the formula (B):
- ##SPC30##
- wherein R.sub.5 is a hydrogen atom, a C.sub.1 -C.sub.12 alkyl group or a C.sub.7 -C.sub.8 aralkyl group, which alkyl or aralkyl group may be unsubstituted or substituted with a halogen atom, a hydroxy group or a C.sub.1 -C.sub.4 alkoxy group, and which alkyl group or the alkyl moiety of the aralky group may contain a --SO.sub.2 NH--, --CONH-- or --CO-- group in the chain thereof;
- R.sub.6 is a C.sub.1 -C.sub.3 alkyl group or a C.sub.7 -C.sub.8 aralkyl group which alkyl or aralkyl group may be unsubstituted or substituted with a halogen atom, a hydroxy group or a C.sub.1 -C.sub.4 alkoxy group;
- and X.sup.- is an anion;
- and of the formula (C):
- ##SPC31##
- wherein R.sub.7 and R.sub.8, which may be the same or different, each is a hydrogen atom, a halogen atom, a C.sub.1 -C.sub.3 alkyl group or a cyano group;
- R.sub.9 is a C.sub.1 -C.sub.3 alkyl group or a C.sub.7 -C.sub.8 aralkyl group;
- R.sub.10 is a C.sub.1 -C.sub.3 alkylene group;
- R.sub.11 is a C.sub.1 -C.sub.3 alkyl group;
- and X.sup.- is an anion;
- and of the formula (D);
- ##SPC32##
- wherein R.sub.12 is a C.sub.1 -C.sub.3 alkyl group;
- R.sub.13 is a C.sub.1 -C.sub.3 alkylene group;
- R.sub.14, R.sub.15, R.sub.16 and R.sub.17, which may be the same or different, each is a hydrogen atom, a halogen atom or a cyano group;
- R.sub.18 and R.sub.19, which may be the same or different, each is a hydrogen atom, a C.sub.1 -C.sub.3 alkyl group or a C.sub.7 -C.sub.8 aralkyl group, which alkyl or aralkyl group may be unsubstituted or substituted with a halogen atom, a cyano group or a hydroxy group;
- and X.sup.- is an anion.
23 more elements
Dependencies are inferred from the claim text.