Claims
- 1. A disazo compound having the formula ##STR121## wherein R.sub.1 and R.sub.2 are the same or different and each stands for hydrogen; alkyl having 1 to 4 carbon atoms; a first radical selected from the first group consisting of benzyl, phenetyl, phenyl, naphthyl, anthryl, pyrenyl, anthraquinonyl, thienyl, furyl, pyridyl and carbazolyl; a second substituted radical in which said first radical is substituted with alkyl having 1 to 4 carbon atoms, alkoxy having 1 to 4 carbon atoms, halogen, cyano, nitro or dialkylamino having from 2 to 8 carbon atoms; or R.sub.1 and R.sub.2 together with the carbon atom to which they are attached form a first ring selected from the second group consisting of hexylidene, pentylidene, benzopentylidene and dibenzopentylidene, or a second substituted ring in which said first ring is substituted with alkyl having 1 to 4 carbon atoms, alkoxy having 1 to 4 carbon atoms, halogen, cyano, nitro or dialkylamino having from 2 to 8 carbon atoms.
- 2. A disazo compound according to claim 1, wherein R.sub.1 and R.sub.2 each stands for hydrogen, methyl, ethyl, propyl, said first radical or said second substituted radical.
- 3. A disazo compound according to claim 1 in which R.sub.1 is hydrogen and R.sub.2 is phenyl or phenyl substituted with at least one substituent selected from the group consisting of alkyl having 1 to 4 carbon atoms, alkoxy having 1 to 4 carbon atoms, halogen, cyano, nitro or dialkylamino having 2 to 8 carbon atoms.
- 4. A disazo compound according to claim 1, wherein R.sub.1 and R.sub.2 together with the carbon atom to which they are attached form said first ring or said second substituted ring.
- 5. A disazo compound according to claim 1, wherein R.sub.1 is hydrogen and R.sub.2 is a third radical selected from the third group consisting of phenyl, naphthyl, anthryl, pyrenyl, thienyl and carbazolyl, and a fourth substituted radical in which said third radical is substituted with alkyl having 1 to 4 carbon atoms, alkoxy having 1 to 4 carbon atoms, halogen, cyano, nitro or dialkylamino having 2 to 8 carbon atoms.
- 6. A disazo compound according to claim 1, wherein R.sub.1 is hydrogen and R.sub.2 is phenyl, phenyl substituted with C.sub.1 -C.sub.4 lower alkyl-, C.sub.1 -C.sub.4 lower alkoxy-, halogen- or nitro, naphthyl, anthryl, pyrenyl, thienyl or carbazolyl.
- 7. A disazo compound according to claim 1, wherein R.sub.1 is hydrogen and R.sub.2 is phenyl, o-, m- or p-methoxyphenyl, o-, m- or p-methyl phenyl o-, m- or p-chlorophenyl or o-, m- or p-nitrophenyl.
- 8. A disazo compound according to claim 1, wherein R.sub.1 is hydrogen and R.sub.2 is o-, m- or p-bromophenyl, 2,4-dimethylphenyl, 2,5-dimethoxyphenyl, 2,3,4-trimethoxyphenyl or 4-ethoxyphenyl.
- 9. A disazo compound according to claim 1, wherein R.sub.1 is hydrogen and R.sub.2 is ##STR122##
- 10. A disazo compound according to claim 1, wherein R.sub.1 is phenyl and R.sub.2 is methyl, phenyl or benzyl.
Priority Claims (2)
Number |
Date |
Country |
Kind |
57-177419 |
Oct 1982 |
JPX |
|
58-2310 |
Jan 1983 |
JPX |
|
Parent Case Info
This is a division of application Ser. No. 536,924, filed Sept. 28, 1983, now U.S. Pat. No. 4,537,844, issued Aug. 27, 1985.
US Referenced Citations (3)
Foreign Referenced Citations (3)
Number |
Date |
Country |
2412076 |
Sep 1974 |
DEX |
57-202349 |
Dec 1982 |
JPX |
2131141 |
Apr 1984 |
GBX |
Divisions (1)
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Number |
Date |
Country |
Parent |
536924 |
Sep 1983 |
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