US3933787A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Substituted 4-(2-benzothiazolyl)phenylazo dyes having a quaternary ammonium, hydrazinium or optionally substituted amino substituent
Assignee: Sandoz AG
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Filing: 1973-01-12
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Granted: 1976-01-20
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Expires: 1993-01-12
Abstract
Abstract Azo dyes of the formula WHERE X stands for the radical of a coupling component of the aminobenzene, hydroxybenzene, aminonaphthalene, hydroxynaphthalene or heterocyclic series or one with a coupling methylene group, An<-> for an anion equivalent to Kn<+>, N FOR 1 TO 6, K<+> for the group + (CH2-K)n N ANGLE ANGLE C N=N-X A n<-> (I), S and where the aromatic rings B and/or D may be further substituted. The dyes are useful for dyeing and printing paper (e.g., dyeing in the stock). The dyed paper is fast to light and wet treatments and has good fastness to bleaching, water, alcohol and light.
Inventors
- 👤 Helmut Moser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 05:49
CPC Classifications
D; D21; D21H; D21H21/00; D21H21/14; D21H21/28; C; C09; C09B; C09B44/00; C09B44/02; Y; Y10; Y10S; Y10S8/00; Y10S8/916; Y10S8/919
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
77 words
A dye of the formula ##SPC7## wherein B 2 is hydrogen or methyl, M is ##EQU51## or ##EQU52## wherein each of R 8 and R 9 is independently methyl, ethyl or 2-hydroxyethyl, R 10 is methyl, ethyl, 2-hydroxyethyl or 2-carbamoylethyl, each of R 11 and R 12 is independently hydrogen, methyl, ethyl or 2-hydroxyethyl, and A - is an anion, X is ##SPC8## wherein B 27 is hydrogen, methyl or methoxy, and m is 1 to 3.
Claim 2
Dependent Claim
77 words
A dye of the formula ##SPC7## wherein B 2 is hydrogen or methyl, M is ##EQU51## or ##EQU52## wherein each of R 8 and R 9 is independently methyl, ethyl or 2-hydroxyethyl, R 10 is methyl, ethyl, 2-hydroxyethyl or 2-carbamoylethyl, each of R 11 and R 12 is independently hydrogen, methyl, ethyl or 2-hydroxyethyl, and A - is an anion, X is ##SPC8## wherein B 27 is hydrogen, methyl or methoxy, and m is 1 to 3.
Claim 3
Dependent Claim
13 words
A dye according to claim 1 wherein m is 1 to 2, inclusive.
Claim 4
Dependent Claim
22 words
A dye according to claim 2 wherein each --CH 2 --M is attached to a 2'- or 7-position of the benzothiazolylphenyl group.
Claim 5
Dependent Claim
50 words
A dye according to claim 2 having the formula ##SPC9## wherein B 2 is hydrogen or methyl, R 11 is hydrogen, methyl, ethyl or 2-hydroxyethyl, R 12 is hydrogen, methyl, ethyl or 2-hydroxyethyl, X is ##SPC10## wherein B 27 is hydrogen, methyl or methoxy, and q is 1 to 2.
Claim 6
Dependent Claim
20 words
A dye according to claim 4 wherein each ##EQU53## is attached to a 2' or 7-position of the benzothiazolylphenyl group.
Claim 7
Dependent Claim
60 words
A dye according to claim 2 having the formula ##SPC11## wherein B 2 is hydrogen or methyl, each of R 8 and R 9 is independently methyl, ethyl or 2-hydroxyethyl, R 10 is methyl, ethyl, 2-hydroxyethyl or 2-carbamoylethyl, X is ##SPC12## wherein B 27 is hydrogen, methyl or methoxy, q is 1 to 2, and A - is an anion.
Claim 8
Dependent Claim
16 words
A dye according to claim 6 wherein each ##EQU54## is attached to a 2'- or 7-position
Claim 9
Dependent Claim
4 words
of the benzothiazolylphenyl group.
Claim 10
Dependent Claim
4 words
of the benzothiazolylphenyl group.
Claim 11
Dependent Claim
14 words
A dye according to claim 6 having the formula ##SPC13## wherein X is ##SPC14##
Claim 12
Dependent Claim
20 words
A dye according to claim 8 wherein each ##EQU55## is attached to a 2' or 7-position of the benzothiazolylphenyl group.
Claim 13
Dependent Claim
10 words
A dye according to claim 8 having the formula ##SPC15##
Claim 14
Dependent Claim
10 words
A dye according to claim 8 having the formula ##EQU56##
Claim 15
Dependent Claim
10 words
A dye according to claim 8 having the formula ##SPC16##
Claim 16
Dependent Claim
10 words
The dye according to claim 1 having the formula ##SPC17##
Claim 17
Dependent Claim
10 words
A dye according to claim 1 having the formula ##SPC18##
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-01-19 | 1979-07-21 | 1980-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-01-19 | 1983-07-21 | 1984-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-01-19 | 1987-07-21 | 1988-01-20 | $7700.00 | Window Closed / Lapsed |