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US4076743A
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Novel betaines, processes for the preparation thereof and recovery of underground petroleum therewith
Assignee: Henkel AG and Co KGaA
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Filing: 1977-01-10
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Granted: 1978-02-28
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Expires: 1997-01-10
Abstract
Abstract The reaction of an aminoalkanol of the formula: ##STR1## wherein R 1 and R 2 are C 1-17 aliphatic hydrocarbon groups (the sum of the carbon atoms in R 1 + R 2 being from 9 to 18); R 3 and R 4 represent the same or different C 1-6 alkyl or alkylol groups; x represents a integer from 2 to 4; and y represents 0 or 1, with a water-soluble halocarboxylic acid provides quaternary ammonium compounds. The compounds are amphoteric surface-active agents which are soluble in water containing high concentrations of NaCl, and are useful in the recovery of underground petroleum by the flooding method.
Inventors
- 👤 Karlheinz Koch
- 👤 Horst Rutzen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:33
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/58; C09K8/584; Y; Y10; Y10S; Y10S507/00; Y10S507/935; Y10S507/936
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
71 words
Water-soluble betaines of the formula: ##STR10## wherein R 1 and R 2 each represents a C 1-17 alkyl group, the sum of the number of carbon atoms in R 1 and R 2 being 9 to 18; R 3 and R 4 represents the same or different C 1-6 alkyl or alkylol group; x represents 2,3 or 4; y represents 0 or 1, and z represents 1, 2, 3 or 4.
Claim 2
Dependent Claim
71 words
Water-soluble betaines of the formula: ##STR10## wherein R 1 and R 2 each represents a C 1-17 alkyl group, the sum of the number of carbon atoms in R 1 and R 2 being 9 to 18; R 3 and R 4 represents the same or different C 1-6 alkyl or alkylol group; x represents 2,3 or 4; y represents 0 or 1, and z represents 1, 2, 3 or 4.
Claim 3
Dependent Claim
15 words
Betaines according to claim 1 wherein R 1 and R 2 represent unbranched alkyl groups.
Claim 4
Dependent Claim
13 words
Betaines according to claim 2 wherein R 3 and R 4 represent methyl.
Claim 5
Dependent Claim
9 words
Betaines according to claim 1 wherein z represents 1.
Claim 6
Dependent Claim
61 words
A betaine of the formula: ##STR11## wherein R 1 and R 2 each represents a C 1-17 alkyl group, the sum of the number of carbon atoms in R 1 and R 2 being 9 to 18; R 3 and R 4 represent the same or different C 1-6 alkyl or alkylol groups; and z represents 1, 2, 3 or 4.
Claim 7
Dependent Claim
61 words
A betaine of the formula: ##STR11## wherein R 1 and R 2 each represents a C 1-17 alkyl group, the sum of the number of carbon atoms in R 1 and R 2 being 9 to 18; R 3 and R 4 represent the same or different C 1-6 alkyl or alkylol groups; and z represents 1, 2, 3 or 4.
Claim 8
Dependent Claim
35 words
A betaine according to claim 5 wherein the sum of the carbon atoms in R 1 and R 2 is 11 to 18; R 3 and R 4 each are methyl; and z represents 1.
Claim 9
Dependent Claim
96 words
A mixture consisting essentially of (A) a compound of the formula: ##STR12## and (B) a compound of the formula: ##STR13## wherein R 1 and R 2 each represents a C 1-17 alkyl group, the sum of the number of carbon atoms in R 1 and R 2 being 9 to 18; R 3 and R 4 represent the same or different C 1-6 alkyl or alkylol groups; x represents 2, 3 or 4; and z represents 1, 2, 3 or 4; and wherein the weight of (B) is 1% to 20% of the weight of (A).
Claim 10
Dependent Claim
96 words
A mixture consisting essentially of (A) a compound of the formula: ##STR12## and (B) a compound of the formula: ##STR13## wherein R 1 and R 2 each represents a C 1-17 alkyl group, the sum of the number of carbon atoms in R 1 and R 2 being 9 to 18; R 3 and R 4 represent the same or different C 1-6 alkyl or alkylol groups; x represents 2, 3 or 4; and z represents 1, 2, 3 or 4; and wherein the weight of (B) is 1% to 20% of the weight of (A).
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-02-27 | 1981-08-29 | 1982-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-02-27 | 1985-08-29 | 1986-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-02-27 | 1989-08-29 | 1990-02-28 | $7700.00 | Window Closed / Lapsed |