Patent US3954830A successfully refreshed from Google Patents.
US3954830A
Expired / Lapsed
US
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Yellow methine dyes for hydrophobic textile material
Assignee: American Aniline Products Inc
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Filing: 1974-10-24
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Granted: 1976-05-04
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Expires: 1994-10-24
Abstract
Abstract Water insoluble disperse dyes for aromatic polyester textile material are made by the reaction of an aldehyde intermediate derived from an α-(N-alkylanilino)m-toluenesulfonamide, typified by α-(N-ethylanilino)-m-toluenesulfonamide, with a nitrile containing an active methylene group, such as malononitrile. This class of dyes, when appropriately dispersed, produces bright greenish-yellow dyeings on aromatic polyester fabrics with excellent substantivity, outstanding sublimation fastness, and excellent fastness to light. The dyes are applied to polyesters, such as polyethylene terephthalate, by carrier dyeing, pressure dyeing and thermofixation methods.
Inventors
- 👤 Edgar Earl Renfrew
- 👤 Guido Ruggiero Lorenzo Genta
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 08:11
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/36; C08K5/43; C09; C09B; C09B23/00; C09B23/14; C09B23/143
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
131 words
A dye of the formula: ##SPC15## wherein Y is a member selected from the group consisting of cyano, benzyl, carbamoyl, N-lower alkyl carbamoyl, N,N-dilower alkyl carbamoyl, N-phenylcarbamoyl, N-loweralkoxy phenylcarbamoyl, N-loweralkyl phenyl carbamoyl, N-halophenyl carbamoyl, lower carbalkoxy, lower cyanocarbalkoxy, phenyl sulfonyl, halophenyl sulfonyl, and lower alkylphenylsulfonyl; R 1 is a member selected from the group consisting of lower alkyl, hydroxy lower alkyl and cyano lower alkyl; R 2 , R 3 and R 4 are members selected from the group consisting of hydrogen, lower alkyl, lower alkoxy, chlorine and bromine, and R 5 and R 6 are members selected from the group consisting of hydrogen, lower alkyl, cyano lower alkyl and hydroxy lower alkyl and taken collectively form a 5 or 6-membered ring structure containing an additional nitrogen or oxygen hetero atom.
Claim 2
Dependent Claim
131 words
A dye of the formula: ##SPC15## wherein Y is a member selected from the group consisting of cyano, benzyl, carbamoyl, N-lower alkyl carbamoyl, N,N-dilower alkyl carbamoyl, N-phenylcarbamoyl, N-loweralkoxy phenylcarbamoyl, N-loweralkyl phenyl carbamoyl, N-halophenyl carbamoyl, lower carbalkoxy, lower cyanocarbalkoxy, phenyl sulfonyl, halophenyl sulfonyl, and lower alkylphenylsulfonyl; R 1 is a member selected from the group consisting of lower alkyl, hydroxy lower alkyl and cyano lower alkyl; R 2 , R 3 and R 4 are members selected from the group consisting of hydrogen, lower alkyl, lower alkoxy, chlorine and bromine, and R 5 and R 6 are members selected from the group consisting of hydrogen, lower alkyl, cyano lower alkyl and hydroxy lower alkyl and taken collectively form a 5 or 6-membered ring structure containing an additional nitrogen or oxygen hetero atom.
Claim 3
Dependent Claim
30 words
The dye of claim 1 wherein Y is cyano, R 2 , R 3 , R 4 , R 5 and R 6 are hydrogen; and R 1 is ethyl.
Claim 4
Dependent Claim
31 words
The dye of claim 1 wherein Y is cyano, R 2 , R 3 and R 4 are hydrogen; R 5 and R 6 are methyl; and R 1 is ethyl.
Claim 5
Dependent Claim
30 words
The dye of claim 1 wherein Y is N-tolylcarbamoyl; R 2 , R 3 , R 4 , R 5 and R 6 are hydrogen; and R 1 is ethyl.
Claim 6
Dependent Claim
31 words
The dye of claim 1 wherein Y is carbethoxy; R 2 , R 3 and R 4 are hydrogen; R 5 and R 6 are methyl; and R 1 is ethyl.
Claim 7
Dependent Claim
31 words
The dye of claim 1 wherein Y is phenylsulfonyl, R 2 , R 3 and R 4 are hydrogen; R 5 and R 6 are methyl; and R 1 is ethyl.
Claim 8
Dependent Claim
39 words
A dye of the formula: ##SPC16##in which R 1 is methyl, ethyl or cyanoethyl; R 2 and R 3 are hydrogen or methyl: R 4 is hydrogen and R 5 and R 6 are hydrogen, methyl, ethyl or cyanoethyl.
Claim 9
Dependent Claim
39 words
A dye of the formula: ##SPC16##in which R 1 is methyl, ethyl or cyanoethyl; R 2 and R 3 are hydrogen or methyl: R 4 is hydrogen and R 5 and R 6 are hydrogen, methyl, ethyl or cyanoethyl.
Claim 10
Dependent Claim
30 words
The dye of claim 7 in which R 1 is ethyl, R 3 is methyl and R 2 , R 4 , R 5 , and R 6 are hydrogen.
Claim 11
Dependent Claim
29 words
The dye of claim 7 in which R 1 is cyanoethyl, R 3 is methyl and R 2 , R 4 , R 5 and R 6 are hydrogen.
References Cited (Backward Citations)
US3390168A
Cited
US3756778A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-05-04 | 1979-11-03 | 1980-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-05-04 | 1983-11-03 | 1984-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-05-04 | 1987-11-03 | 1988-05-04 | $7700.00 | Window Closed / Lapsed |