US3658671A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sulfoxidation of paraffin
Assignee: Lion Fat and Oil Co Ltd
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Filing: 1969-09-18
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Granted: 1972-04-25
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Expires: 1989-09-18
Abstract
Abstract A method of sulfoxidation of paraffin which comprises the steps of imparting actinic ray energy, to paraffin which contains not more than 5 weight percent of the reaction product of sulfoxidation and/or oxygen, and which contains sulfur dioxide gas dissolved therein, and subsequently blowing oxygen and sulfur dioxide gas into the thus processed paraffin.
Inventors
- 👤 Masuzo Nagayama
- 👤 Terunosuke Kawana
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:57
CPC Classifications
C; C07; C07C; C07C303/00; C07C303/02; C07C303/14; B; B01; B01J; B01J19/00; B01J19/08; B01J19/12; B01J19/122; B01J19/123; Y; Y10; Y10S; Y10S204/00; Y10S204/902; Y10S204/903
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
28 words
A process according to claim 1, in which the feed is continuously flowed into and through said irradiation zone and thence into said reaction zone in unidirectional flow.
Claim 2
Dependent Claim
32 words
A process according to claim 1, in which the feed to said irradiation zone is substantially free of O2 so that said feed consists essentially of said paraffin and said SO2 gas.
Claim 3
Dependent Claim
23 words
A process according to claim 1, including the step of removing O2 from said paraffin prior to feeding same into said irradiation zone.
Claim 4
Dependent Claim
29 words
A process according to claim 4, in which O2 is removed from said paraffin by blowing SO2 gas through said paraffin prior to feeding same into said irradiation zone.
Claim 5
Dependent Claim
16 words
A process according to claim 1, including the step of adding water to said irradiation zone.
Claim 6
Dependent Claim
41 words
A process according to claim 1, in which SO2 gas is fed into said reaction zone simultaneously with the feeding of O2 gas, the volume ratio of SO2/O2 fed into said reaction zone being in the range of 0.5 - 6.0/1
Claim 7
Dependent Claim
69 words
A process according to claim 1, in which, prior to feeding the paraffin into said irradiation zone, the paraffin is fed into a container and SO2 gas is blown therethrough, a gaseous mixture of O2 and SO2 is removed from the container and is fed into the reaction zone and the paraffin containing SO2 gas dissolved therein is removed from the container and is flowed into said irradiation zone.
Claim 8
Dependent Claim
56 words
A process according to claim 1 in which said irradiation zone is a first container having an actinic radiation source and the reaction zone is a separate second container free of actinic radiation source and connected in series with the first container so that the feed flows in series from the first container to the second.
Claim 9
Dependent Claim
54 words
A process according to claim 1, in which said irradiation zone and said reaction zone are both present within said single container and a jacket separates the two zones from each other, the feed flowing unidirectionally inside said jacket through said irradiation zone and thence flowing into said reaction zone outside of said jacket.
Claim 10
Dependent Claim
30 words
A process according to claim 1, in which the feed is paraffin saturated with SO2 gas and in which the gas flowed into the reaction zone consists of O2 gas.
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) | 1975-04-25 | 1975-10-25 | 1976-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-04-25 | 1979-10-25 | 1980-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-04-25 | 1983-10-25 | 1984-04-25 | $7700.00 | Window Closed / Lapsed |