US3969414A
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Naphthylmethyl sulfonium compounds
Assignee: Dow Chemical Co
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Filing: 1975-02-18
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Granted: 1976-07-13
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Expires: 1995-02-18
Abstract
Abstract Novel sulfonium compounds are described herein which correspond to the formula ##SPC1## The sulfonium compounds are useful corrosion inhibitors in acidic cleaning solutions.
Inventors
- 👤 Wayne W. Frenier
- 👤 William J. Settineri
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:11
CPC Classifications
C; C07; C07C; C07C381/00; C07C381/12
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
117 words
A compound corresponding to the formula ##SPC4## wherein n is 1 or 2; each R 1 independently is a hydrocarbyl, hydrocarbyloxy or hydrocarbylthio group of from 1 to about 24 carbon atoms, or a hydrocarbyl group of from 1 to about 24 carbon atoms whose chain length is interrupted by an atom of oxygen or sulfur; R 2 is a hydrocarbyl radical of from 1 to about 24 carbon atoms, with the proviso that the total carbon content of R 1 and R 2 is from 7 to about 25 carbon atoms; R 3 is an alkyl radical of from 1 to 4 carbon atoms, allyl or a phenyl radical; and A - is a neutralizing anion.
Claim 2
Dependent Claim
117 words
A compound corresponding to the formula ##SPC4## wherein n is 1 or 2; each R 1 independently is a hydrocarbyl, hydrocarbyloxy or hydrocarbylthio group of from 1 to about 24 carbon atoms, or a hydrocarbyl group of from 1 to about 24 carbon atoms whose chain length is interrupted by an atom of oxygen or sulfur; R 2 is a hydrocarbyl radical of from 1 to about 24 carbon atoms, with the proviso that the total carbon content of R 1 and R 2 is from 7 to about 25 carbon atoms; R 3 is an alkyl radical of from 1 to 4 carbon atoms, allyl or a phenyl radical; and A - is a neutralizing anion.
Claim 3
Dependent Claim
23 words
The compound defined by claim 1 wherein n is 1; R 1 is alkyl; R 2 and R 3 are alkyl or allyl.
Claim 4
Dependent Claim
15 words
The compound defined by claim 2 wherein R 2 and R 3 are each alkyl.
Claim 5
Dependent Claim
15 words
The compound defined by claim 3 wherein R 2 and R 3 are each methyl.
Claim 6
Dependent Claim
15 words
The compound defined by claim 2 wherein R 2 and R 3 are each allyl.
Claim 7
Dependent Claim
20 words
The compound defined by claim 3 wherein R 1 is an alkyl radical of from 8 to 18 carbon atoms.
Claim 8
Dependent Claim
24 words
The compound defined by claim 6 wherein R 1 is dodecyl, R 2 and R 3 are each methyl, and A - is chloride.
Claim 9
Dependent Claim
20 words
The compound defined by claim 1 wherein R 1 is an alkyl radical of from 8 to 18 carbon atoms.
Claim 10
Dependent Claim
19 words
The compound defined by claim 8 wherein n is 1; R 2 and R 3 are alkyl or allyl.
Claim 11
Dependent Claim
15 words
The compound defined by claim 6 wherein R 2 and R 3 are each methyl.
Claim 12
Dependent Claim
15 words
The compound defined by claim 9 wherein R 2 and R 3 are each allyl.
References Cited (Backward Citations)
US3773675A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-07-13 | 1980-01-12 | 1980-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-07-13 | 1984-01-12 | 1984-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-07-13 | 1988-01-12 | 1988-07-13 | $7700.00 | Window Closed / Lapsed |