Patent US3856772A successfully refreshed from Google Patents.
US3856772A
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US
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Azo dyes of the diamino pyrimidine series
Assignee: BASF SE
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Filing: 1973-01-19
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Granted: 1974-12-24
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Expires: 1993-01-19
Abstract
Abstract Azo dyes of the diaminopyrimidine series which may be exemplified by the formula OR IN WHICH Y is an electron-attracting substituent such as nitro, cyano, methylsulfonyl or the like and B is hydrogen or a substituent such as an alkyl, benzyl or phenyl group. The phenyl diazo component may also contain additional substituents and other readily available diazo components may replace the phenyl diazo component. The amino groups may also be substituted by replacement of one or both hydrogen atoms. These dyes are useful as disperse dyes for synthetic fibers, particularly polyesters. The dyes give yellow to blue violet shades having excellent fastness properties.
Inventors
- 👤 G Dunkelmann
- 👤 J Dehnert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:00
CPC Classifications
C; C07; C07D; C07D239/00; C07D239/02; C07D239/24; C07D239/28; C07D239/30; C07D239/32; C07D239/42; C07D239/46; C07D239/48; C09; C09B; C09B29/00; C09B29/34; C09B29/36; C09B29/3604; C09B29/3665; C09B29/3669; C09B31/00; C09B31/02; C09B31/12; C09B31/14; C09B43/00; C09B43/18; C09B43/20; C09B43/202; C09B43/30
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
5 words
A DYE OF THE FORMULA
Claim 2
Dependent Claim
5 words
A DYE OF THE FORMULA
Claim 3
Dependent Claim
10 words
A dye as claimed in claim 1 of the formula
Claim 4
Dependent Claim
137 words
A dye as claimed in claim 1 wherein: D has the same meanings as in claim 1; B1 is hydrogen, alkyl of 1 to 4 carbon atoms, benzyl or phenyl; R1 is hydrogen, alkyl of 1 to 4 carbon atoms, cyclohexyl, phenylalkyl of 1 to 3 carbon atoms in said alkyl, phenyl, methylphenyl, methoxyphenyl, hydroxy of 2 to 6 carbon atoms, alkoxyalkyl of 1 to 4 atoms in said alkoxy and 2 or 3 carbon atoms in said alkyl, benzyloxypropyl, Beta -phenylethoxypropyl, phenoxypropyl, -CH2CHOHC6H5, -(CH2)2O(CH2)2OH, -(CH2)3O(CH2)2OH, -(CH2)3O(CH2)4OH, -(CH2)3OC2H4OCH3, -(CH2)3OC2H4OC4H9 or -(CH2)3OC2H4OC6H5; R2 is hydrogen or alkyl of 1 to 4 carbon atoms; R3 is the same as R1; and R1 and R2 together with the nitrogen may also be pyrrolidino, piperidino or morpholino; with the proviso that one of R1, R2 and R3 is different from hydrogen.
Claim 5
Dependent Claim
5 words
The dye of the formula
Claim 6
Dependent Claim
5 words
The dye of the formula
Claim 7
Dependent Claim
5 words
The dye of the formula
Claim 8
Dependent Claim
5 words
The dye of the formula
Claim 9
Dependent Claim
5 words
The dye of the formula
Claim 10
Dependent Claim
5 words
The dye of the formula
Claim 11
Dependent Claim
5 words
The dye of the formula
Claim 12
Dependent Claim
5 words
The dye of the formula
Claim 13
Dependent Claim
5 words
The dye of the formula
Claim 14
Dependent Claim
5 words
The dye of the formula
Claim 15
Dependent Claim
5 words
The dye of the formula
Claim 16
Dependent Claim
5 words
The dye of the formula
Claim 17
Dependent Claim
5 words
The dye of the formula
Claim 18
Dependent Claim
5 words
The dye of the formula
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) | 1977-12-23 | 1978-06-24 | 1978-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-23 | 1982-06-24 | 1982-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-23 | 1986-06-24 | 1986-12-24 | $7700.00 | Window Closed / Lapsed |