US4376729A
Expired / Lapsed
US
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Novel monoazo and disazo colorants
Assignee: HD ACQUISITION CORP A CORP OF DE
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Filing: 1980-10-08
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Granted: 1983-03-15
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Expires: 2000-10-08
Abstract
Abstract This invention relates to novel (N-substituted sulfonamido) monoazo and disazo compounds, to acid-addition salts of said azo compounds which are useful as direct dyes particularly in the dyeing of cellulose, to novel (N-substituted sulfonamido) substituted nitrobenzene, aniline and acetanilide intermediates to said azo compounds and to methods of preparation of said azo compounds and said intermediates to said azo compounds.
Inventors
- 👤 Nathan N. Crounse
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 04:41
CPC Classifications
C; C09; C09B; C09B33/00; C09B33/02; C09B33/147; C09B29/00; C09B29/0003; C09B29/10; C09B29/103; C09B31/00; C09B31/02; C09B31/06; C09B31/061; C09B31/068; C09B33/153; C09B35/00; C09B35/02; C09B35/039; C09B35/227
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
84 words
A (N-substituted sulfonamido) monoazo compound having the formula ##STR41## in which R 1 represents alkylene-NH-alkylene-NH 2 in which alkylene represents --CH 2 CH 2 -- and --CH 2 CH 2 CH 2 --; R 2 represents hydrogen, C 1 to C 3 alkyl or C 1 to C 3 alkoxy; R 5 represents hydrogen, or ##STR42## in which R o represents hydrogen, C 1 to C 3 alkyl or C 1 to C 3 alkoxy; or the acid-addition salt forms of said monoazo compounds.
Claim 2
Dependent Claim
84 words
A (N-substituted sulfonamido) monoazo compound having the formula ##STR41## in which R 1 represents alkylene-NH-alkylene-NH 2 in which alkylene represents --CH 2 CH 2 -- and --CH 2 CH 2 CH 2 --; R 2 represents hydrogen, C 1 to C 3 alkyl or C 1 to C 3 alkoxy; R 5 represents hydrogen, or ##STR42## in which R o represents hydrogen, C 1 to C 3 alkyl or C 1 to C 3 alkoxy; or the acid-addition salt forms of said monoazo compounds.
Claim 3
Dependent Claim
31 words
A monoazo compound, according to claim 1, having the formula ##STR43## in which R 1 , R 2 and R o each have the same respective meanings given in claim 1.
Claim 4
Dependent Claim
31 words
The monoazo compound, according to claim 2 wherein, R 1 is --(CH 2 ) 2 NH(CH 2 ) 2 NH 2 , R 2 is hydrogen and R o is methoxy.
Claim 5
Dependent Claim
30 words
The monoazo compound, according to claim 2 wherein, R 1 is --(CH 2 ) 2 NH(CH 2 ) 2 NH 2 , R 2 and R o are both methoxy.
Claim 6
Dependent Claim
31 words
A monoazo compound, according to claim 1, having the formula ##STR44## in which R 1 , R 2 and R o each have the same respective meanings given in claim 1.
Claim 7
Dependent Claim
31 words
The monoazo compound, according to claim 5 wherein, R 1 is --CH 2 CH 2 NHCH 2 CH 2 NH 2 , R 2 is hydrogen and R o is methoxy.
Claim 8
Dependent Claim
28 words
A monoazo compound according to claim 1 having the formula ##STR45## in which R 1 and R 2 each have the same respective meanings given in claim 1.
Claim 9
Dependent Claim
26 words
The monoazo compound according to claim 7 wherein R 1 is --CH 2 CH 2 NHCH 2 CH 2 NH 2 and R 2 is hydrogen.
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) | 1986-03-14 | 1986-09-13 | 1987-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-03-14 | 1990-09-13 | 1991-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-03-14 | 1994-09-13 | 1995-03-15 | $7700.00 | Window Closed / Lapsed |