US4095943A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the production of solutions of lower aliphatic carboxylic acid salts of cationic dyestuffs
Assignee: BASF Corp
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Filing: 1975-11-03
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Granted: 1978-06-20
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Expires: 1995-11-03
Abstract
Abstract A process for producing solutions of salts of lower aliphatic carboxylic acids of cationic dyestuffs which consists essentially of converting the halide, especially the chloride, of a cationic dyestuff into the salt of a lower aliphatic carboxylic acid by reacting the halide with the corresponding carboxylic acid in the presence of an epoxide compound having a maximum of 12 carbon atoms.
Inventors
- 👤 Walter Lang
- 👤 Gert Hegar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 09:10
CPC Classifications
C; C09; C09B; C09B67/00; C09B67/0071; C09B67/0075; C09B69/00; C09B69/02; C09B69/06
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
74 words
A process for producing a solution of a salt of a lower aliphatic carboxylic acid of a cationic dyestuff which consists essentially of converting a cationic dyestuff halide salt into the salt of a lower aliphatic carboxylic acid by reacting the halide salt with a 100 to 2,000% excess of the corresponding carboxylic acid in the presence of a 100 to 250% excess of an epoxide compound having a maximum of 12 carbon atoms.
Claim 2
Dependent Claim
74 words
A process for producing a solution of a salt of a lower aliphatic carboxylic acid of a cationic dyestuff which consists essentially of converting a cationic dyestuff halide salt into the salt of a lower aliphatic carboxylic acid by reacting the halide salt with a 100 to 2,000% excess of the corresponding carboxylic acid in the presence of a 100 to 250% excess of an epoxide compound having a maximum of 12 carbon atoms.
Claim 3
Dependent Claim
16 words
The process of claim 1 wherein the reaction is performed in aqueous lower aliphatic carboxylic acid.
Claim 4
Dependent Claim
16 words
The process of claim 1 wherein the reaction is performed in anhydrous lower aliphatic carboxylic acid.
Claim 5
Dependent Claim
17 words
The process of claim 1 wherein the lower aliphatic carboxylic acid is formic acid or acetic acid.
Claim 6
Dependent Claim
11 words
The process of claim 1 wherein the epoxide compound is epichlorohydrin.
Claim 7
Dependent Claim
15 words
The process to claim 1 wherein the cationic dyestuff has an external quaternary ammonium group.
Claim 8
Dependent Claim
15 words
The process of claim 1 wherein the dyestuff solution obtained is subsequently diluted with water.
Claim 9
Dependent Claim
17 words
The process of claim 1 wherein the dyestuff solution obtained is subsequently diluted with an organic solvent.
Claim 10
Dependent Claim
12 words
The process of claim 8, wherein the organic solvent is ethylene glycol.
Claim 11
Dependent Claim
11 words
The liquid dyeing preparation obtained by the process of claim 1.
Claim 12
Dependent Claim
27 words
The liquid dyeing preparation of claim 10 which contains 15 to 50% of at least one salt of a lower aliphatic carboxylic acid of the cationic dyestuff.
Claim 13
Dependent Claim
22 words
The liquid dyeing preparation of claim 11 wherein the salt of the aliphatic carboxylic acid of the cationic dyestuff is an acetate.
Claim 14
Dependent Claim
29 words
The use of the dyeing preparation obtained by the process of claim 1, for producing dye liquors and printing pastes having an aqueous base or an organic solvent base.
Claim 15
Dependent Claim
25 words
The use of the dye liquors and printing pastes produced according to claim 13 for the dyeing or printing of synthetic textile material, particularly polyacrylonitrile.
Claim 16
Dependent Claim
21 words
The use of the dye liquors and printing pastes produced according to claim 13 for the dyeing or printing of polyacrylonitrile.
Claim 17
Dependent Claim
10 words
The process of claim 1, wherein the halide is chloride.
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) | 1981-06-19 | 1981-12-19 | 1982-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-06-19 | 1985-12-19 | 1986-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-06-19 | 1989-12-19 | 1990-06-20 | $7700.00 | Window Closed / Lapsed |