US4057390A
Expired / Lapsed
US
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Sulfur-containing bis-quaternaries
Assignee: Baker Petrolite LLC
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Filing: 1976-05-24
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Granted: 1977-11-08
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Expires: 1996-05-24
Abstract
Abstract This invention relates to sulfur-containing Bis-Quaternaries of the idealized formula [N + CH2CH2]2Z 2X- where N is a quaternary amino group, Z is a sulfur-containing group, for example S, SO, SO2 and X is an anion; to methods of preparing such compounds; and to uses of such compounds.
Inventors
- 👤 Patrick M. Quinlan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 14:32
CPC Classifications
C; C23; C23F; C23F11/00; C23F11/08; C23F11/10; C23F11/16; C02; C02F; C02F1/00; C02F1/50; C07; C07D; C07D213/00; C07D213/02; C07D213/04; C07D213/06; C07D213/16; C07D213/20; C07D215/00; C07D215/02; C07D215/04; C07D215/10; C07D295/00; C07D295/04; C07D295/08; C07D295/084; C07D295/088; C09; C09K; C09K8/00; C09K8/02; C09K8/54; C09K8/60; C09K8/605; Y; Y10; Y10S; Y10S507/00; Y10S507/92; Y10S507/939
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
49 words
A process of inhibiting corrosion which comprises treating a corrosive aqueous medium with Bis-quaternaries of the following formula: (N.sup.+ CH.sub.2 CH.sub.14 2).sub.2 Z · 2X .sup.- is an N is a quaternary amino group, Z is the sulfur-containing group S, SO, or SO 2 and X is an anion.
Claim 2
Dependent Claim
49 words
A process of inhibiting corrosion which comprises treating a corrosive aqueous medium with Bis-quaternaries of the following formula: (N.sup.+ CH.sub.2 CH.sub.14 2).sub.2 Z · 2X .sup.- is an N is a quaternary amino group, Z is the sulfur-containing group S, SO, or SO 2 and X is an anion.
Claim 3
Dependent Claim
11 words
The process of claim 1 where Z is SO 2 .
Claim 4
Dependent Claim
25 words
The process of claim 1 where the formula is ##STR17## where R 1 , R 2 and R 3 are alkyl or oxygen-containing alkyl groups.
Claim 5
Dependent Claim
23 words
The process of claim 1 where the formula is (N.sup.+ CH.sub.2 CH.sub.2).sub.2 Z · 2X.sup.- where N is a cyclic tertiary amine moiety.
Claim 6
Dependent Claim
11 words
The process of claim 3 where Z is SO 2 .
Claim 7
Dependent Claim
11 words
The process of claim 4 where Z is SO 2 .
Claim 8
Dependent Claim
21 words
The process of claim 1 where the N + is an aliphatic tertiary amino group or a heterocyclic tertiary amino group.
Claim 9
Dependent Claim
21 words
The process of claim 3 where R 1 , R 2 and R 3 are alkylene oxyalkylene or hydroxy alkyl groups.
Claim 10
Dependent Claim
11 words
The process of claim 4 where N is a pyridine radical.
Claim 11
Dependent Claim
18 words
The process of claim 3 where R 1 and R 2 are methyl and R 3 is dodecyl.
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) | 1980-11-07 | 1981-05-09 | 1981-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-11-07 | 1985-05-09 | 1985-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-11-07 | 1989-05-09 | 1989-11-08 | $7700.00 | Window Closed / Lapsed |