US4379088A
Expired / Lapsed
US
⏱️ 0.0 years remaining
N-Aminoalkylenesulfonamido substituted monoazo colorants
Assignee: HD ACQUISITION CORP A CORP OF DE
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Filing: 1981-08-17
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Granted: 1983-04-05
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Expires: 2001-08-17
Abstract
Abstract This invention relates to novel mixtures consisting essentially of monoazo compounds and disazo compounds which are substituted with x (N-substituted sulfonamido) groups, to acid-addition salts of said azo compounds, useful as direct dyes particularly in the dyeing of cellulose, and to methods of preparation of said mixtures of (N-substituted sulfonamido) substituted monoazo and disazo compounds.
Inventors
- 👤 Nathan N. Crounse
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:25
CPC Classifications
C; C09; C09B; C09B29/00; C09B29/10; C09B29/103; C09B35/00; C09B35/02; C09B35/039; C09B35/08; C09B35/10; C09B35/18; C09B35/28
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
134 words
A mixture consisting essentially of a monoazo compound which is substituted with an average of x (N-substituted sulfonamido) groups per molecule wherein said monoazo compound is of the formula ##STR25## in which x represents a number from 1 to 4, R represents hydrogen or the moiety ##STR26## in which R 4 is hydrogen, C 1 to C 3 alkoxy or C 1 to C 3 alkyl, R 1 represents a moiety selected from the group consisting of alkylene-NH-alkylene-NH 2 , alkylene-N-(C 1 to C 4 alkyl) 2 , ##STR27## in which alkylene represents --CH 2 CH 2 -- and --CH 2 CH 2 CH 2 --, R 3 represents hydrogen, C 1 to C 3 alkyl or C 1 to C 3 alkoxy; or the acid-addition salt forms of said mixtures of monoazo compounds.
Claim 2
Dependent Claim
134 words
A mixture consisting essentially of a monoazo compound which is substituted with an average of x (N-substituted sulfonamido) groups per molecule wherein said monoazo compound is of the formula ##STR25## in which x represents a number from 1 to 4, R represents hydrogen or the moiety ##STR26## in which R 4 is hydrogen, C 1 to C 3 alkoxy or C 1 to C 3 alkyl, R 1 represents a moiety selected from the group consisting of alkylene-NH-alkylene-NH 2 , alkylene-N-(C 1 to C 4 alkyl) 2 , ##STR27## in which alkylene represents --CH 2 CH 2 -- and --CH 2 CH 2 CH 2 --, R 3 represents hydrogen, C 1 to C 3 alkyl or C 1 to C 3 alkoxy; or the acid-addition salt forms of said mixtures of monoazo compounds.
Claim 3
Dependent Claim
37 words
A mixture according to claim 1 wherein the monoazo compound is of the formula ##STR28## in which R 1 , R 3 , R 4 and x each have the same respective meanings given in claim 1.
Claim 4
Dependent Claim
27 words
The mixture according to claim 2 wherein R 1 is --(CH 2 ) 3 N(CH 3 ) 2 and R 3 and R 4 are each methoxy.
Claim 5
Dependent Claim
34 words
A mixture according to claim 2 wherein the monoazo compound is of the formula ##STR29## in which R 1 , R 3 and x each have the same respective meanings given in claim 2.
Claim 6
Dependent Claim
23 words
The mixture according to claim 4 wherein R 1 is --(CH 2 ) 3 N(CH 3 ) 2 and R 3 is 2-methoxy.
Claim 7
Dependent Claim
23 words
The mixture according to claim 4 wherein R 1 is --(CH 2 ) 3 N(CH 3 ) 2 and R 3 is 4-methoxy.
Claim 8
Dependent Claim
11 words
The mixture according to claim 4 wherein R 1 is ##STR30##
Claim 9
Dependent Claim
11 words
The mixture according to claim 4 wherein R 1 is ##STR31##
Claim 10
Dependent Claim
25 words
The mixture according to claim 4 wherein R 1 is --(CH 2 ) 2 NH(CH 2 ) 2 NH 2 and R 3 is 2-methoxy.
Claim 11
Dependent Claim
25 words
The mixture according to claim 4 wherein R 1 is --(CH 2 ) 2 NH(CH 2 ) 2 NH 2 and R 3 is 4-methoxy.
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) | 1986-04-04 | 1986-10-04 | 1987-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-04-04 | 1990-10-04 | 1991-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-04-04 | 1994-10-04 | 1995-04-05 | $7700.00 | Window Closed / Lapsed |