Patent US4671799A successfully refreshed from Google Patents.
US4671799A
Expired / Lapsed
US
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Dye mixtures for paper stock
Assignee: BASF SE
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Filing: 1986-06-26
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Granted: 1987-06-09
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Expires: 2006-06-26
Abstract
Abstract Novel dye mixtures which contain dyes of the general formulae I ##STR1## and II ##STR2## in the form of the alkali metal and ammonium salts, where m and n are each 0 to 4, p and q are each 1 or 2, r is 0 or 1, m+n is 2, 3 or 4, B 1 and B 2 are each hydrogen or chlorine, or B 1 and B 2 together form part of a fused benzene ring which is unsubstituted or substituted by SO 3 H, R 1 and R 2 independently of one another are each hydrogen or unsubstituted or substituted lower alkyl or cyclohexyl, or R 1 and R 2 together with the nitrogen form a saturated heterocyclic structure, and Z is a reactive radical which is usually present in reactive dyes and which is bonded to the diazo or coupling component, are very useful for dyeing paper stocks.
Inventors
- 👤 Hans-Juergen Degen
- 👤 Hans Kraus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:45
CPC Classifications
D; D21; D21H; D21H21/00; D21H21/14; D21H21/28; C; C09; C09B; C09B62/00; C09B62/02; C09B62/04; C09B62/08; C09B62/095; C09B67/00; C09B67/0033; Y; Y10; Y10S; Y10S534/00; Y10S534/01; Y10S8/00; Y10S8/916; Y10S8/919
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
143 words
A dye mixture which contains dyes of the formulae I ##STR43## and II ##STR44## in the form of the alkali metal and ammonium salts, where m and n are each 0 to 4, p and q are each 1 or 2, r is 0 or 1, m+n is 2, 3 or 4, B 1 and B 2 are each hydrogen or chlorine, or B 1 and B 2 together form part of a fused benzene ring which is unsubstituted or substituted by SO 3 H, R 1 and R 2 independently of one another are each hydrogen or unsubstituted or substituted lower alkyl or cyclohexyl, or R 1 and R 2 together with the nitrogen form a saturated heterocyclic structure, and Z is a reactive radical which is usually present in reactive dyes and which is bonded to the diazo or coupling component.
Claim 2
Dependent Claim
143 words
A dye mixture which contains dyes of the formulae I ##STR43## and II ##STR44## in the form of the alkali metal and ammonium salts, where m and n are each 0 to 4, p and q are each 1 or 2, r is 0 or 1, m+n is 2, 3 or 4, B 1 and B 2 are each hydrogen or chlorine, or B 1 and B 2 together form part of a fused benzene ring which is unsubstituted or substituted by SO 3 H, R 1 and R 2 independently of one another are each hydrogen or unsubstituted or substituted lower alkyl or cyclohexyl, or R 1 and R 2 together with the nitrogen form a saturated heterocyclic structure, and Z is a reactive radical which is usually present in reactive dyes and which is bonded to the diazo or coupling component.
Claim 3
Dependent Claim
56 words
A dye mixture which contains dyes of the formulae Ia ##STR45## and IIa ##STR46## in the form of the alkali metal or ammonium salts, where m, n, R 1 and R 2 have the stated meanings, R 3 is unsubstituted or substituted amino and X is fluorine, chlorine, bromine, hydroxyl, alkoxy or unsubstituted or substituted amino.
Claim 4
Dependent Claim
56 words
A dye mixture which contains dyes of the formulae Ia ##STR45## and IIa ##STR46## in the form of the alkali metal or ammonium salts, where m, n, R 1 and R 2 have the stated meanings, R 3 is unsubstituted or substituted amino and X is fluorine, chlorine, bromine, hydroxyl, alkoxy or unsubstituted or substituted amino.
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) | 1990-06-08 | 1990-12-08 | 1991-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-06-08 | 1994-12-08 | 1995-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-06-08 | 1998-12-08 | 1999-06-09 | $7700.00 | Window Closed / Lapsed |