US4379124A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reactor made from steel with particularly high resistance to the effects of Oxo synthesis and method of preparing steel for use in constructing an Oxo reactor
Assignee: Produits Chimiques Ugine Kuhlmann
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Filing: 1981-03-23
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Granted: 1983-04-05
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Expires: 2001-03-23
Abstract
Abstract The invention relates to the manufacture of reactors for Oxo synthesis which are constructed of steel having a Brinell hardness of less than 300 and containing 1 to 6% chromium and 0.4 to 0.7% molybdenum.
Inventors
- 👤 Raymond Fouquet
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:21
CPC Classifications
C; C07; C07C; C07C45/00; C07C45/49; C07C45/50; B; B01; B01J; B01J19/00; B01J19/02; B01J19/24; B01J19/2415; B01J19/2435; B01J2219/00; B01J2219/02; B01J2219/025; B01J2219/0277; B01J2219/0286
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
102 words
An oxo reactor for carrying out oxo synthesis comprising: a. vertical tubes, b. means coupling the tops and bottoms of said vertical tubes, said tubes and coupling means being formed of steel having a Brinell hardness of less than 300 and including in said steel 1-6% chromium and 0.4-0.7% molybdenum, c. inlet means for introducing the oxo reagents into the reactor and structured to result in immediate mixing of said reagents introduced into the reactor, and d. the steel used in making said coupling means being different from the steel used in making said vertical tubes and having a higher chromium content.
Claim 2
Dependent Claim
102 words
An oxo reactor for carrying out oxo synthesis comprising: a. vertical tubes, b. means coupling the tops and bottoms of said vertical tubes, said tubes and coupling means being formed of steel having a Brinell hardness of less than 300 and including in said steel 1-6% chromium and 0.4-0.7% molybdenum, c. inlet means for introducing the oxo reagents into the reactor and structured to result in immediate mixing of said reagents introduced into the reactor, and d. the steel used in making said coupling means being different from the steel used in making said vertical tubes and having a higher chromium content.
Claim 3
Dependent Claim
37 words
A reactor as in claim 1 wherein: a. said vertical tubes are made from a steel containing 1-3% chromium and 0.4-0.7% molybdenum, and b. said coupling means are made from steel containing 3-6% chromium and 0.4-0.7% molybdenum.
Claim 4
Dependent Claim
13 words
A reactor as in claim 2 wherein said steel is free from vanadium.
Claim 5
Dependent Claim
24 words
A reactor as in claim 3 wherein there are two of said vertical tubes coupled at the top and bottom by said coupling means.
Claim 6
Dependent Claim
57 words
A reactor as in claim 4 further comprising: a. a single inlet at the bottom of one of said vertical tubes for introducing the oxo reagents into the reactor and structured to result in immediate mixing of said reagents introduced into the reactor, and b. a single reaction product recovery outlet at the top of the reactor.
Claim 7
Independent Claim
82 words
A method of constructing an oxo synthesis reactor comprising vertical tubes and means coupling the tops and bottoms of said tubes, said method comprising the steps of: a. forming said vertical tubes and coupling means of steel with a Brinell hardness of less than 300, b. including in said steel 1-6% chromium and 0.4-0.7% molybdenum, and c. the steel used in making said coupling means being different from the steel used in making said vertical tubes and having a higher chromium content.
Claim 8
Independent Claim
82 words
A method of constructing an oxo synthesis reactor comprising vertical tubes and means coupling the tops and bottoms of said tubes, said method comprising the steps of: a. forming said vertical tubes and coupling means of steel with a Brinell hardness of less than 300, b. including in said steel 1-6% chromium and 0.4-0.7% molybdenum, and c. the steel used in making said coupling means being different from the steel used in making said vertical tubes and having a higher chromium content.
Claim 9
Dependent Claim
23 words
A method as in claim 6 wherein said steel contains 1-3% chromium and 0.4-0.7% molybdenum, and is used for making said vertical tubes.
Claim 10
Dependent Claim
23 words
A method as in claim 6 wherein said steel contains 3-6% chromium and 0.4-0.7% molybdenum, and is used for making said coupling means.
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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) | 1986-04-04 | 1986-10-04 | 1987-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-04-04 | 1990-10-04 | 1991-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-04-04 | 1994-10-04 | 1995-04-05 | $7700.00 | Window Closed / Lapsed |