Patent US2049172A successfully refreshed from Google Patents.
US4410331A
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Condensation products containing sulphonic acid groups: additives for dyeing synthetic polyamide
Assignee: BASF Corp
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Filing: 1981-08-13
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Granted: 1983-10-18
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Expires: 2001-08-13
Abstract
Abstract New condensation products of the formula ##STR1## wherein R represents alkyl, cycloalkyl, aralkyl, aryl, or halogen, M represents hydrogen, an alkali metal or alkaline earth metal or an ammonium group, and n is a number from 1 to 3; these products are particularly useful as dyeing assistants for dyeing synthetic polyamide fibres with anionic dyes.
Inventors
- 👤 Albert Wurmli
- 👤 Hans U. Berendt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:31
CPC Classifications
C; C07; C07C; C07C309/00; D; D06; D06P; D06P1/00; D06P1/44; D06P1/62; D06P1/621; D06P1/622; D06P1/625; D06P3/00; D06P3/02; D06P3/04; D06P3/24; D06P3/241; Y; Y10; Y10S; Y10S8/00; Y10S8/913; Y10S8/914
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
54 words
A process for dyeing synthetic polyamide fibres with anionic dyes, wherein the dyeing preparations contain a condensation product of the formula ##STR35## wherein R represents alkyl, cycloalkyl, aralkyl, aryl or halogen, M represents hydrogen, an alkali metal or alkaline earth metal, or an ammonium group, and n is a number from 1 to 3.
Claim 2
Dependent Claim
54 words
A process for dyeing synthetic polyamide fibres with anionic dyes, wherein the dyeing preparations contain a condensation product of the formula ##STR35## wherein R represents alkyl, cycloalkyl, aralkyl, aryl or halogen, M represents hydrogen, an alkali metal or alkaline earth metal, or an ammonium group, and n is a number from 1 to 3.
Claim 3
Dependent Claim
31 words
A process of claim 1 wherein, in the condensation product, R represents alkyl with 1 to 12 carbon atoms, cycloalkyl with 5 or 6 carbon atoms, benzyl, phenylethyl, phenyl, or halogen.
Claim 4
Dependent Claim
40 words
A process of claim 1 wherein, in the condensation product R represents alkyl with 5 to 9 carbon atoms, cyclohexyl, benzyl, phenyl, or chlorine, M represents hydrogen, sodium, potassium, or ammonium, and n is a number from 1 to 3.
Claim 5
Dependent Claim
37 words
A process of claim 3 where said condensation product is one of the formula ##STR36## wherein R 3 represents alkyl with 5 to 9 carbon atoms and M and n have the meanings given in claim 3.
Claim 6
Dependent Claim
29 words
A process of claim 4 wherein the condensation product is one of the formula ##STR37## wherein R 3 , M, and n have the meanings given in claim 4.
Claim 7
Dependent Claim
22 words
A process of claim 5 wherein the condensation product is one of the formula ##STR38## wherein n 1 is 1.5 to 2.5.
Claim 8
Dependent Claim
22 words
A process of claim 5 wherein the condensation product is one of the formula ##STR39## wherein n 1 is 1.5 to 2.5.
Claim 9
Dependent Claim
23 words
A process of claim 3 wherein the condensation product mixture, is one of the formulae ##STR40## wherein n 1 is 1.5 to 2.5.
Claim 10
Dependent Claim
15 words
A process of claim 8 wherein, in the condensation product mixture, n 1 is 1.8.
Claim 11
Dependent Claim
13 words
Synthetic polyamide fibres which are dyed by the process according to claim 1.
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) | 1986-10-17 | 1987-04-18 | 1987-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-10-17 | 1991-04-18 | 1991-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-10-17 | 1995-04-18 | 1995-10-18 | $7700.00 | Window Closed / Lapsed |