Patent US3962319A successfully refreshed from Google Patents.
US3962319A
Expired / Lapsed
US
⏱️ 0.0 years remaining
α-Hydroxy-β-aminocarboxylic acids
Assignee: BASF SE
•
Filing: 1972-01-19
•
Granted: 1976-06-08
•
Expires: 1992-01-19
Abstract
Abstract New α-hydroxy-β-aminocarboxylic acids which are agents for masking metal ions and auxiliaries for the paper and textile industries. Other outlets are in the textile industry in dyeing and bleaching, in metal refining, in the foodstuffs industry (bottle washing) and in the field of catalysts (fuel cells, accumulators).
Inventors
- 👤 Friedrich Becke
- 👤 Helmut Fleig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:51
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/86; H01M4/90; H01M4/9008; D; D06; D06M; D06M13/00; D06M13/322; D06M13/325; D06M13/342; D06P; D06P1/00; D06P1/44; D06P1/64; D06P1/642; D06P1/647; H01M10/00; H01M10/24; H01M10/26; Y; Y02; Y02E; Y02E60/00; Y02E60/10; Y02E60/30; Y02E60/50
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
54 words
An α-hydroxy-β-aminocarboxylic acid of the formula: ##EQU9## in which R 1 and R 2 may be identical or different and each denotes alkenyl of two to twenty carbon atoms, cycloalkyl or cycloalkenyl of five or six carbon atoms, or aralkyl of seven to 12 carbon atoms or aralkenyl of eight to 12 carbon atoms.
Claim 2
Dependent Claim
54 words
An α-hydroxy-β-aminocarboxylic acid of the formula: ##EQU9## in which R 1 and R 2 may be identical or different and each denotes alkenyl of two to twenty carbon atoms, cycloalkyl or cycloalkenyl of five or six carbon atoms, or aralkyl of seven to 12 carbon atoms or aralkenyl of eight to 12 carbon atoms.
Claim 3
Dependent Claim
138 words
An α-hydroxy-β-aminocarboxylic acid of the formula: ##EQU10## R 1 and/or R 2 may each denote the radical ##EQU11## or the radical ##EQU12## R 1 may also denote hydrogen, a hydroxyl group, alkylol of one to four carbon atoms or the radical ##EQU13## or the radical ##EQU14## in which R 2 in said two last-mentioned radicals denotes alkyl of two to 20 carbon atoms, alkenyl of two to 20 carbon atoms, cycloalkyl or cycloalkenyl respectively of five or six carbon atoms, aralkyl of seven to 12 carbon atoms, aralkenyl of eight to 12 carbon atoms, the radical ##EQU15## or the radical ##EQU16## in which R 5 denotes the above meanings for R 2 or alkylol or alkoxy-methyl of up to six carbon atoms, R 6 denotes alkylene of two to 12 carbon atoms and n denotes zero or 1.
Claim 4
Dependent Claim
138 words
An α-hydroxy-β-aminocarboxylic acid of the formula: ##EQU10## R 1 and/or R 2 may each denote the radical ##EQU11## or the radical ##EQU12## R 1 may also denote hydrogen, a hydroxyl group, alkylol of one to four carbon atoms or the radical ##EQU13## or the radical ##EQU14## in which R 2 in said two last-mentioned radicals denotes alkyl of two to 20 carbon atoms, alkenyl of two to 20 carbon atoms, cycloalkyl or cycloalkenyl respectively of five or six carbon atoms, aralkyl of seven to 12 carbon atoms, aralkenyl of eight to 12 carbon atoms, the radical ##EQU15## or the radical ##EQU16## in which R 5 denotes the above meanings for R 2 or alkylol or alkoxy-methyl of up to six carbon atoms, R 6 denotes alkylene of two to 12 carbon atoms and n denotes zero or 1.
Claim 5
Dependent Claim
26 words
An α-hydroxy-β-aminocarboxylic acid selected from the group consisting of: a. nitrilotrilactic acid, b. ethylene diaminetetralactic acid, c. β-stearylaminolactic acid, d. N-benzylnitrilodilactic acid, and e. N-cyclohexylnitrilodilactic acid.
Claim 6
Dependent Claim
26 words
An α-hydroxy-β-aminocarboxylic acid selected from the group consisting of: a. nitrilotrilactic acid, b. ethylene diaminetetralactic acid, c. β-stearylaminolactic acid, d. N-benzylnitrilodilactic acid, and e. N-cyclohexylnitrilodilactic acid.
Claim 7
Dependent Claim
13 words
A compound as claimed in claim 3 wherein said acid is nitrilotrilactic acid.
Claim 8
Dependent Claim
14 words
A compound as claimed in claim 3 wherein said acid is ethylene diaminetetralactic acid.
Claim 9
Dependent Claim
13 words
A compound as claimed in claim 3 wherein said acid is β-stearylaminolactic acid.
Claim 10
Dependent Claim
13 words
A compound as claimed in claim 3 wherein said acid is N-benzylnitrilodilactic acid.
Claim 11
Dependent Claim
13 words
A compound as claimed in claim 3 wherein said acid is N-cyclohexylnitrilodilactic acid.
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) | 1979-06-08 | 1979-12-08 | 1980-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-06-08 | 1983-12-08 | 1984-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-06-08 | 1987-12-08 | 1988-06-08 | $7700.00 | Window Closed / Lapsed |