Claims
- 1. A water-soluble monoazo dyestuff having in the form of the free acid the formula ##STR11## wherein X is --CH.dbd.CH.sub.2 or --CH.sub.2 --CH.sub.2 --Z in which is --OH, --Cl, --Br, --OSO.sub.3 H, --SSO.sub.3 H, --OPO.sub.3 H.sub.2, ##STR12## or --N(lower alkyl).sub.2, R.sub.1 is phenyl or naphthyl substituted by at least one member of the group sulfo and halo, R.sub.2 is lower alkyl, carboxyl or carboxylic acid lower alkylester and m is 1 or 2.
- 2. A water-soluble monoazo dyestuff according to claim 1, wherein R.sub.1 is monosulfophenyl, dichloromonosulfophenyl or disulfonaphthyl.
- 3. A water-soluble monoazo dyestuff according to claim 1, wherein R.sub.1 is 4-sulfophenyl and R.sub.2 is methyl.
- 4. A water-soluble monoazo dyestuff according to claim 1, wherein R.sub.1 is sulfophenyl and R.sub.2 is carboxyl.
- 5. A water-soluble monoazo dyestuff according to claim 1, wherein R.sub.1 is 4-sulfophenyl and R.sub.2 is carbethoxy.
- 6. A water-soluble monoazo dyestuff according to claim 1, wherein R.sub.1 is 2,5-dichloro-4-sulfophenyl and R.sub.2 is methyl.
- 7. A water-soluble monoazo dyestuff according to claim 1, wherein R.sub.1 is 4,8-disulfonaphtyl-2- and R.sub.2 is methyl.
Priority Claims (1)
Number |
Date |
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1943904 |
Mar 1971 |
DT |
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Parent Case Info
This application is a continuation-in-part application of U.S. patent application Ser. No. 449,517, filed Mar. 8, 1974, now abandoned, which is a continuation application of U.S. patent application Ser. No. 261,925 filed June 12, 1972, now abandoned, which again is a divisional application of U.S. patent application Ser. No. 66,552, filed Aug. 24, 1970, now abandoned.
US Referenced Citations (8)
Divisions (1)
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66552 |
Aug 1970 |
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Continuations (1)
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261925 |
Jun 1972 |
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Continuation in Parts (1)
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449517 |
Mar 1974 |
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