US3980609A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the bulk dyeing of polyesters
Assignee: Bayer AG
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Filing: 1975-04-28
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Granted: 1976-09-14
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Expires: 1995-04-28
Abstract
Abstract Dyestuffs of the formula ##SPC1## Wherein R denotes a straight-chain or branched-chain alkyl group with 1-4 C atoms, B and B 1 independently of one another denote hydrogen or optionally substituted alkyl, alkenyl, cycloalkyl, aralkyl, aryl or heteroaryl radicals or conjointly and together with the N atom form a ring which is optionally interrupted by hetero-atoms and the ring A can be substituted by 1 - 3 non-ionic substituents, Are suitable for the bulk dyeing of synthetic linear polyester.
Inventors
- 👤 Rutger Neeff
- 👤 Heinz Dietrich Jordan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:44
CPC Classifications
C; C09; C09B; C09B5/00; C09B5/02; C09B5/14; C08; C08K; C08K5/00; C08K5/16; C08K5/34; C08K5/36; C08K5/43
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
84 words
Process for bulk dyeing synthetic linear polyesters, characterised in that one or more dyestuffs of the formula ##SPC7## wherein R denotes a straight-chain or branched-chain alkyl group with 1-4 C atoms, B and B 1 independently of one another denote hydrogen or optionally substituted alkyl, alkenyl, cycloalkyl, aralkyl, aryl or heteroaryl radicals or conjointly and together with the N atom form a ring which is optionally interrupted by hetero-atoms and the ring A can be substituted by 1 - 3 non-ionic substituents, are used.
Claim 2
Dependent Claim
84 words
Process for bulk dyeing synthetic linear polyesters, characterised in that one or more dyestuffs of the formula ##SPC7## wherein R denotes a straight-chain or branched-chain alkyl group with 1-4 C atoms, B and B 1 independently of one another denote hydrogen or optionally substituted alkyl, alkenyl, cycloalkyl, aralkyl, aryl or heteroaryl radicals or conjointly and together with the N atom form a ring which is optionally interrupted by hetero-atoms and the ring A can be substituted by 1 - 3 non-ionic substituents, are used.
Claim 3
Dependent Claim
121 words
Process according to claim 1, characterised in that one or more dyestuffs of the formula ##SPC8## wherein R has the abovementioned meaning, A 1 can be substituted by 1 to 3, especially 1, substituents from the series F, C1, Br, C 1 -C 4 -alkyl, C 1 -C 4 -alkoxy, CHF 2 , CF 3 or SO 2 CH 3 and B 2 and B 3 denote C 1 -C 12 -alkyl, allyl, hydroxyethyl, methoxyethyl, ethoxyethyl, hydroxyethoxyethyl, cyanoethyl, benzyl, or phenyl optionally substituted by hydroxyl, C 1 -C 4 -alkoxy, C 1 -C 4 -alkyl, chlorine, bromine, C 2 -C 5 -alkoxycarbonyl, carboxyl, carbamoyl or sulphamoyl, sulpholanyl, cyclohexyl, cyclopentyl or, together with the N atom, piperidinyl, pyrrolidinyl or morpholinyl, are used.
Claim 4
Dependent Claim
8 words
Synthetic linear polyesters bulk-dyed according to claim 1.
Claim 5
Dependent Claim
11 words
The process of claim 1 in which the dyestuff is ##SPC9##
Claim 6
Dependent Claim
11 words
The process of claim 1 in which the dyestuff is ##SPC10##
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) | 1979-09-14 | 1980-03-15 | 1980-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-09-14 | 1984-03-15 | 1984-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-09-14 | 1988-03-15 | 1988-09-14 | $7700.00 | Window Closed / Lapsed |