Patent US4279814A successfully refreshed from Google Patents.
US4279814A
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Salicyl phenyl naphthyl trisazo di and trisulfonic developed direct black dyes
Assignee: Crompton and Knowles Corp
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Filing: 1979-06-27
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Granted: 1981-07-21
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Expires: 1999-06-27
Abstract
Abstract New trisazo compounds that are useful as developed direct black dyes for cellulosic textiles and as self-shade dyes for paper and leather having the structure: ##STR1## wherein R' is at least one of the following groups: ##STR2## and M is H, Na, K, Li, N(R) 3 H where R is H, lower alkyl or lower hydroxyalkyl and each of the R groups can be the same or different.
Inventors
- 👤 Howard L. Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 05:00
CPC Classifications
C; C09; C09B; C09B35/00; C09B35/36; C09B35/362; C09B35/50; C09B45/00; C09B45/38; D; D06; D06P; D06P1/00; D06P1/02; D06P1/12; D06P1/36; Y; Y10; Y10S; Y10S534/00; Y10S534/01
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
40 words
A compound having the structure: ##STR7## wherein R' is ##STR8## and where M is --H, --Na, --K, --Li or --N(R) 3 H and R represents the same or different substituents selected from the group --H, lower alkyl or lower hydroxyalkyl.
Claim 2
Dependent Claim
40 words
A compound having the structure: ##STR7## wherein R' is ##STR8## and where M is --H, --Na, --K, --Li or --N(R) 3 H and R represents the same or different substituents selected from the group --H, lower alkyl or lower hydroxyalkyl.
Claim 3
Dependent Claim
10 words
A compound according to claim 1 wherein R' is: ##STR9##
Claim 4
Dependent Claim
10 words
A compound according to claim 1 wherein R' is: ##STR10##
Claim 5
Dependent Claim
10 words
A compound according to claim 1 wherein R' is: ##STR11##
Claim 6
Dependent Claim
52 words
A composition comprising and admixture of a Gamma acid compound of claim 2 together with a J acid compound having the structure: ##STR12## wherein M is --H, --Na, --K, --Li or --N(R) 3 H and R represents the same or different substituents selected from the group --H, lower alkyl or lower hydroxyalkyl.
Claim 7
Dependent Claim
28 words
A composition according to claim 5 wherein the mol % ratio of the Gamma acid compound to the J acid compound present in the mixture is about 70:30.
Claim 8
Dependent Claim
52 words
A composition comprising an admixture of a Gamma acid compound of claim 2 together with a H acid compound having the structure: ##STR13## wherein M is --H, --Na, --K, --Li or --N(R) 3 H and R represents the same or different substituents selected from the group --H, lower alkyl or lower hydroxyalkyl.
Claim 9
Dependent Claim
28 words
A composition according to claim 7 wherein the mol % ratio of the Gamma acid compound to the H acid compound present in the mixture is about 70:30.
Claim 10
Dependent Claim
52 words
A composition comprising an admixture of a J acid compound of claim 3 together with a H acid compound having the structure: ##STR14## wherein M is --H, --Na, --K, --Li or --N(R) 3 H and R represents the same or different substituents selected from the group --H, lower alkyl or lower hydroxyalkyl.
Claim 11
Dependent Claim
16 words
A compound according to any one of claims 1 to 9 inclusive where M is Na.
Claim 12
Dependent Claim
24 words
A compound according to any one of claims 1 to 9 inclusive wherein the sulfonic group is in the 6-position of the naphthyl moiety.
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) | 1984-07-20 | 1985-01-19 | 1985-07-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-07-20 | 1989-01-19 | 1989-07-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-07-20 | 1993-01-19 | 1993-07-21 | $7700.00 | Window Closed / Lapsed |