Patent US3987045A successfully refreshed from Google Patents.
US3987045A
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Disperse dyes based on isoindolene derivatives
Assignee: BASF SE
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Filing: 1975-08-27
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Granted: 1976-10-19
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Expires: 1995-08-27
Abstract
Abstract Disperse dyes of the formula: ##SPC1## In which both R's are alkyl, phenyl or phenalkyl (the radical R bearing other substituents if desired) and X is the radical of a methyleneactive compound. The dyes dye fibers of linear polyesters brilliant greenish yellow to bluish red shades.
Inventors
- 👤 Gustav Bock
- 👤 Wolfgang Elser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:04
CPC Classifications
C; C09; C09B; C09B57/00; C09B57/04; Y; Y10; Y10S; Y10S8/00; Y10S8/92; Y10S8/922
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
41 words
A disperse dye of the formula ##SPC8## in which R' and R" are alkyl of from 1 to 5 carbon atoms, 2-chloroethyl, 2-cyanoethyl, 2-ethoxyethyl, 2-methoxyethyl, 3-methoxypropyl, 3-ethoxypropyl, 3-isopropoxypropyl, 2-phenylethyl, benzyl or phenyl and wherein R' and R" are identical or different.
Claim 2
Dependent Claim
41 words
A disperse dye of the formula ##SPC8## in which R' and R" are alkyl of from 1 to 5 carbon atoms, 2-chloroethyl, 2-cyanoethyl, 2-ethoxyethyl, 2-methoxyethyl, 3-methoxypropyl, 3-ethoxypropyl, 3-isopropoxypropyl, 2-phenylethyl, benzyl or phenyl and wherein R' and R" are identical or different.
Claim 3
Dependent Claim
29 words
A disperse dye as claimed in claim 1 wherein R' and R" are methyl, 2-chloroethyl, 2-methoxyethyl, 3-methoxypropyl, 3-ethoxypropyl or 2-cyanoethyl, and wherein R' and R" are identical or different.
Claim 4
Dependent Claim
52 words
A mixture of disperse dyes a, b and c in the ratio a:b:c of 1:2:1, each dye having the formula ##SPC9## in which in dye a R' and R" are --CH 3 ; in dye b R' is methyl and R" is 3-ethoxypropyl; and in dye c R' and R" are 3-ethoxypropyl.
Claim 5
Dependent Claim
52 words
A mixture of disperse dyes a, b and c in the ratio a:b:c of 1:2:1, each dye having the formula ##SPC9## in which in dye a R' and R" are --CH 3 ; in dye b R' is methyl and R" is 3-ethoxypropyl; and in dye c R' and R" are 3-ethoxypropyl.
References Cited (Backward Citations)
FR1537299A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-10-19 | 1980-04-19 | 1980-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-10-19 | 1984-04-19 | 1984-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-10-19 | 1988-04-19 | 1988-10-19 | $7700.00 | Window Closed / Lapsed |