US3947435A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Disazo acid compounds containing one sulphonic acid group and one phosphonic or methyl-phosphinic acid group
Assignee: Produits Chimiques Ugine Kuhlmann
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Filing: 1973-11-13
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Granted: 1976-03-30
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Expires: 1993-11-13
Abstract
Abstract The disazo compounds of the formula: ##SPC1## In which X is fixed in position 3 or 4 and represents ##EQU1## Y represents hydrogen, chlorine, methoxy or nitro and E represents the residue N-ethyl-N-(m or p-sulphobenzyl)-4-amino-phenyl or 4-phenyl-amino-5-sulpho-naphthyl(1). Process for the preparation of the disazo compounds claimed in claim 1 wherein α-naphthylamine is coupled with the diazo derivative of an amine of the formula: ##SPC2## In which X and Y have the same significance as in claim 1, the monoazo dyestuff thus obtained of the formula: ##SPC3## Is diazotised and the diazo-monoazo derivative is coupled with N-ethyl-N-(m- or p-sulphobenzyl)aniline or 1-phenyl-amino-naphthalene-8-sulphonic acid.
Inventors
- 👤 Jacques Pierre Edmond Pechmeze
- 👤 Robert Frederic Michel Sureau
- 👤 Claude Marie Henri Emile Brouard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:05
CPC Classifications
C; C09; C09B; C09B69/00; C09B69/007; C09B31/00; C09B31/02; C09B31/04; C09B31/041
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
35 words
A disazo compound of the formula: ##SPC8## in which X is fixed in position 3 or 4 and represents ##EQU3## Y represents hydrogen, chlorine, methoxy or nitro and E is N-ethyl-N-(m or p-sulphobenzyl)-4-amino-phenyl or 4-phenyl-amino-5-sulpho-naphthyl(1).
Claim 2
Dependent Claim
35 words
A disazo compound of the formula: ##SPC8## in which X is fixed in position 3 or 4 and represents ##EQU3## Y represents hydrogen, chlorine, methoxy or nitro and E is N-ethyl-N-(m or p-sulphobenzyl)-4-amino-phenyl or 4-phenyl-amino-5-sulpho-naphthyl(1).
Claim 3
Dependent Claim
35 words
A disazo compound of the formula: ##SPC9## in which X is fixed in position 3 or 4 and represents ##EQU4## Y represents hydrogen, chlorine, methoxy or nitro and E is N-ethyl-N-(m or p-sulphobenzyl)-4-amino-phenyl or 4-phenyl-amino-5-sulpho-naphthyl(1).
Claim 4
Dependent Claim
35 words
A disazo compound of the formula: ##SPC9## in which X is fixed in position 3 or 4 and represents ##EQU4## Y represents hydrogen, chlorine, methoxy or nitro and E is N-ethyl-N-(m or p-sulphobenzyl)-4-amino-phenyl or 4-phenyl-amino-5-sulpho-naphthyl(1).
Claim 5
Dependent Claim
41 words
A disazo compound of the formula: ##SPC10## in which X is fixed in position 3 or 4 and represents --CH 2 -PO 3 H 2 , Y represents hydrogen, chlorine, methoxy or nitro and E is N-ethyl-N-(m or p-sulphobenzyl)-4-amino-phenyl or 4-phenyl-amino-5-sulpho-naphthyl(1).
Claim 6
Dependent Claim
41 words
A disazo compound of the formula: ##SPC10## in which X is fixed in position 3 or 4 and represents --CH 2 -PO 3 H 2 , Y represents hydrogen, chlorine, methoxy or nitro and E is N-ethyl-N-(m or p-sulphobenzyl)-4-amino-phenyl or 4-phenyl-amino-5-sulpho-naphthyl(1).
Claim 7
Dependent Claim
5 words
The 3-{4-[N-ethyl-N-(sulphobenzyl)-4-aminophenylazo]-naphthyl (1) azo}-phenylphosphonic acid.
Claim 8
Dependent Claim
5 words
The 3-{4-[N-ethyl-N-(sulphobenzyl)-4-aminophenylazo]-naphthyl (1) azo}-phenylphosphonic acid.
Claim 9
Dependent Claim
5 words
The 3-{4-[4-phenylamino-5-sulpho-naphthyl(1) azo]naphthyl(1) azo}-phenylphosphonic acid.
Claim 10
Dependent Claim
5 words
The 3-{4-[4-phenylamino-5-sulpho-naphthyl(1) azo]naphthyl(1) azo}-phenylphosphonic acid.
Claim 11
Dependent Claim
5 words
The 3-{4-[N-ethyl-N-(sulphobenzyl)-4-aminophenylazo]naphthyl (1) azo}-phenyl-methyl-phosphinic acid.
Claim 12
Dependent Claim
5 words
The 3-{4-[N-ethyl-N-(sulphobenzyl)-4-aminophenylazo]naphthyl (1) azo}-phenyl-methyl-phosphinic acid.
Claim 13
Dependent Claim
7 words
The 3-{4-[4-phenylamino-5 sulpho-naphthyl (1) azo]naphthyl(1) azo}-phenyl-methyl-phosphinic acid.
Claim 14
Dependent Claim
7 words
The 3-{4-[4-phenylamino-5 sulpho-naphthyl (1) azo]naphthyl(1) azo}-phenyl-methyl-phosphinic acid.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-03-30 | 1979-09-29 | 1980-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-03-30 | 1983-09-29 | 1984-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-03-30 | 1987-09-29 | 1988-03-30 | $7700.00 | Window Closed / Lapsed |