US4141889A
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Symmetrical hexakisazo compounds having a 2,2'-disulfostilbenyl central radical
Assignee: Sandoz AG
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Filing: 1977-07-27
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Granted: 1979-02-27
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Expires: 1997-07-27
Abstract
Abstract Symmetrical hexakisazo compounds of the formula <IMAGE> +TR <IMAGE> and mixtures of such compounds, WHEREIN EACH X is hydrogen or -SO3M, each R1 is -OH or -NH2, each R2 is -OH or -NH2, each Y is hydrogen, methyl, or -SO3M, and EACH M, independently, is hydrogen or a non-chromophoric cation, THEIR PRODUCTION, DYE COMPOSITIONS CONTAINING THEM, AND THEIR USE IN THE DYEING OF CELLULOSIC SUBSTRATES SUCH AS COTTON AND PAPER.
Inventors
- 👤 Zdenek Allan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:14
CPC Classifications
C; C09; C09B; C09B35/00; C09B35/64; C09B43/00; C09B43/08
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
62 words
A symmetrical compound of the formula ##STR18## or a mixture of at least two such compounds, wherein each R 1 is --OH or --NH 2 , each R 2 is --OH or --NH 2 , each X is hydrogen or --SO 3 M, each Y is hydrogen, methyl or --SO 3 M, and each M is independently hydrogen or a non-chromophoric cation.
Claim 2
Dependent Claim
62 words
A symmetrical compound of the formula ##STR18## or a mixture of at least two such compounds, wherein each R 1 is --OH or --NH 2 , each R 2 is --OH or --NH 2 , each X is hydrogen or --SO 3 M, each Y is hydrogen, methyl or --SO 3 M, and each M is independently hydrogen or a non-chromophoric cation.
Claim 3
Dependent Claim
6 words
A compound according to claim 1.
Claim 4
Dependent Claim
52 words
A compound according to claim 2 wherein each M is independently hydrogen, lithium, sodium, potassium or N.sup.⊕ (R 3 ) 4 , wherein each R 3 is independently hydrogen, C 1-4 alkyl or C 2-4 hydroxyalkyl, with the proviso that at least one R 3 must be hydrogen or C 1-4 alkyl.
Claim 5
Dependent Claim
14 words
A compound according to claim 2 wherein each M is an alkali metal cation.
Claim 6
Dependent Claim
11 words
A compound according to claim 4 wherein each M is sodium.
Claim 7
Dependent Claim
41 words
A compound according to claim 2 wherein (a) each R 1 is --OH, and each R 2 is --NH 2 , (b) each R 1 and R 2 is --NH 2 or (c) each R 1 and R 2 is --OH.
Claim 8
Dependent Claim
25 words
A compound according to claim 6 wherein each R 1 and R 2 is --NH 2 or each R 1 and R 2 is --OH.
Claim 9
Dependent Claim
17 words
A compound according to claim 7 wherein each R 1 and R 2 is --NH 2 .
Claim 10
Dependent Claim
34 words
A compound according to claim 6 wherein each Y is hydrogen, and one --SO 3 M group on each naphthalene ring is in the 3- or 4-position and the other is in the 6-position.
Claim 11
Dependent Claim
25 words
A compound according to claim 9 wherein each R 1 and R 2 is --NH 2 or each R 1 and R 2 is --OH.
Claim 12
Dependent Claim
11 words
A compound according to claim 2 wherein each Y is hydrogen.
Claim 13
Dependent Claim
19 words
A compound according to claim 2 wherein the total number of --SO 3 M groups is six or eight.
Claim 14
Dependent Claim
18 words
A compound according to claim 12 wherein each X is hydrogen, and each Y is hydrogen or methyl.
Claim 15
Dependent Claim
29 words
A compound according to claim 2 wherein one --SO 3 M group on each naphthalene ring is in the 3- or 4-position and the other is in the 6-position.
Claim 16
Dependent Claim
22 words
A compound according to claim 14 wherein the --SO 3 M groups on each naphthalene ring are in the 3- and 6-positions.
Claim 17
Dependent Claim
81 words
A compound according to claim 1 having the formula ##STR19## wherein each R 1 ' and R 2 ' is --OH or each R 1 ' and R 2 ' is --NH 2 , each X' is hydrogen or --SO 3 M', and each M' is sodium, or a mixture of such compounds wherein each M' is sodium or lithium, with the proviso that at least one M' per molecule is sodium and at least one M' per molecule is lithium.
Claim 18
Dependent Claim
15 words
A compound or mixture of compounds according to claim 16 wherein each X' is hydrogen.
Claim 19
Dependent Claim
21 words
A compound or mixture of compounds according to claim 17 wherein each R 1 and R 2 is --NH 2 .
Claim 20
Dependent Claim
17 words
A compound or mixture of compounds according to claim 16 wherein each X' is --SO 3 M'.
Claim 21
Dependent Claim
21 words
A compound or mixture of compounds according to claim 19 wherein each R 1 and R 2 is --NH 2 .
Claim 22
Dependent Claim
8 words
A mixture of compounds according to claim 1.
Claim 23
Dependent Claim
36 words
A mixture of compounds according to claim 21 wherein each M is sodium or lithium, with the proviso that at least one M per molecule is sodium and at least one M per molecule is lithium.
Claim 24
Dependent Claim
111 words
A mixture of compounds according to claim 21, said mixture comprising at least two compounds of the formula ##STR20## wherein each R 1 is --OH or --NH 2 , each R 2 is --OH or --NH 2 , each X is hydrogen or --SO 3 M, each Y is hydrogen, methyl or --SO 3 M, and each M is independently hydrogen or a non-chromophoric cation, said compounds differing with respect to (a) at least one member of the group consisting of R 1 , R 2 , X and Y, (b) the position of at least one --SO 3 M group on each naphthalene ring or (c) both (a) and (b).
Claim 25
Dependent Claim
10 words
The compound according to claim 18 having the formula ##STR21##
Claim 26
Dependent Claim
10 words
The compound according to claim 17 having the formula ##STR22##
Claim 27
Dependent Claim
10 words
The compound according to claim 20 having the formula ##STR23##
Claim 28
Dependent Claim
39 words
A mixture according to claim 23 of a compound of the formula ##STR24## and a compound of the formula ##STR25## wherein each X is hydrogen or --SO 3 M, and each M is independently hydrogen or a non-chromophoric cation.
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) | 1982-02-26 | 1982-08-28 | 1983-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-02-26 | 1986-08-28 | 1987-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-02-26 | 1990-08-28 | 1991-02-27 | $7700.00 | Window Closed / Lapsed |