US3926546A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyhydroxyalkylamine salts of anionic dyestuffs
Assignee: Bayer AG
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Filing: 1973-10-04
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Granted: 1975-12-16
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Expires: 1993-10-04
Abstract
Abstract wherein R1, R2 and R3 have the meaning given in the description, and their use for the dyeing and printing of materials containing hydroxyl groups and nitrogen, preferably of a textile nature, especially materials of native or regenerated cellulose, such as cotton, rayon and paper, as well as wool, silk, leather, synthetic polyamides and polyurethanes. Salts of anionic dyestuffs with polyhydroxyalkylamines of the formula
Inventors
- 👤 Horst Nickel
- 👤 Karl-Heinz Schundehutte
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:22
CPC Classifications
C; C09; C09B; C09B69/00; C09B69/02; C09B69/04; C09B41/00; C09B41/001; C09B67/00; C09B67/0071; C09B67/0072; C09B67/0073; Y; Y10; Y10S; Y10S8/00; Y10S8/916; Y10S8/917; Y10S8/919; Y10S8/92; Y10S8/924; Y10S8/926; Y10S8/937
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
54 words
IN A PROCESS FOR DYEING AND PRINTING TEXTILE FIBER MATERIALS OF NATIVE OR REGENERATED CELLULOSE, WOOL, SILK, LEATHER, SYNTHETIC POLYAMIDES OR/ AND POLYURETHANES, THE IMPROVEMENT COMPRISING APPLYING CONCENTRATED, LIQUID DYEING PREPARATIONS IN DILUTED FORM TO THE TEXTILE FIBER MATERIALS WHEREIN THE PREPARATION CONTAINS A SALT OF A DYESTUFF CONTAINING SULPHONIC ACID GROUPS WITH 2-AMINO-2-HYDROXYMETHYLPROPANEDIOL-(1,3).
Claim 2
Dependent Claim
54 words
IN A PROCESS FOR DYEING AND PRINTING TEXTILE FIBER MATERIALS OF NATIVE OR REGENERATED CELLULOSE, WOOL, SILK, LEATHER, SYNTHETIC POLYAMIDES OR/ AND POLYURETHANES, THE IMPROVEMENT COMPRISING APPLYING CONCENTRATED, LIQUID DYEING PREPARATIONS IN DILUTED FORM TO THE TEXTILE FIBER MATERIALS WHEREIN THE PREPARATION CONTAINS A SALT OF A DYESTUFF CONTAINING SULPHONIC ACID GROUPS WITH 2-AMINO-2-HYDROXYMETHYLPROPANEDIOL-(1,3).
Claim 3
Dependent Claim
45 words
In a process for dyeing and printing fiber materials of native or regenerated cellulose the improvement comprising applying concentrated, liquid dyeing preparations in diluted form to the textile fiber materials wherein the preparation contains a salt of a dyestuff containing sulphonic acid groups with 2-amino-2-hydroxymethylpropanediol-(1,3).
Claim 4
Dependent Claim
45 words
In a process for dyeing and printing fiber materials of native or regenerated cellulose the improvement comprising applying concentrated, liquid dyeing preparations in diluted form to the textile fiber materials wherein the preparation contains a salt of a dyestuff containing sulphonic acid groups with 2-amino-2-hydroxymethylpropanediol-(1,3).
References Cited (Backward Citations)
US2073116A
Cited
US3352755A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-12-15 | 1979-06-16 | 1979-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-15 | 1983-06-16 | 1983-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-15 | 1987-06-16 | 1987-12-16 | $7700.00 | Window Closed / Lapsed |