Patent US3960964A successfully refreshed from Google Patents.
US3960964A
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Hydrocarbon upgrading process
Assignee: Texaco Inc
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Filing: 1974-12-13
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Granted: 1976-06-01
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Expires: 1994-12-13
Abstract
Abstract A process for converting mixtures of C 6 to C 30 n-paraffin and n-paraffin by-products to substantially pure n-paraffin which comprises catalytically hydrogenating the mixture at a temperature of from about 600° to 750°F. in the presence of a Group VIII metal on alumina catalyst, and from about 10 to 5,000 parts per million of nitrogen present as ammonia or an organonitrogen compound. The catalyst can additionally contain a Group VIB or VIIB metal.
Inventors
- 👤 Robert M. Suggitt
- 👤 Walter C. Gates, Jr.
- 👤 Ralph B. Hudson, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:36
CPC Classifications
C; C07; C07C; C07C9/00
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
133 words
In a process for producing secondary alkyl primary amines from n-paraffins wherein a portion of said n-paraffin is nitrated to form a nitroparaffin along with nitrated and oxygenated by-products, wherein said nitroparaffin is essentially completely hydrogenated to said amine and where said amine is separated from a mixture of unreacted paraffin and oxygenated by-products, the improvement which comprises: a. catalytically hydrogenating said mixture at a temperature of from about 600° to 750°F. in the presence of a catalyst composed of alumina and a Group VIII metal and from about 10 to 5000 parts per million of nitrogen introduced as ammonia or an organonitrogen compound selected from the group consisting of monoalkylamines, dialkylamines, trialkylamines, nitriles and alkenylpolyamines basis said paraffin mixture; and b. recycling said hydrogenated product of (a) for nitration with said n-paraffin.
Claim 2
Dependent Claim
133 words
In a process for producing secondary alkyl primary amines from n-paraffins wherein a portion of said n-paraffin is nitrated to form a nitroparaffin along with nitrated and oxygenated by-products, wherein said nitroparaffin is essentially completely hydrogenated to said amine and where said amine is separated from a mixture of unreacted paraffin and oxygenated by-products, the improvement which comprises: a. catalytically hydrogenating said mixture at a temperature of from about 600° to 750°F. in the presence of a catalyst composed of alumina and a Group VIII metal and from about 10 to 5000 parts per million of nitrogen introduced as ammonia or an organonitrogen compound selected from the group consisting of monoalkylamines, dialkylamines, trialkylamines, nitriles and alkenylpolyamines basis said paraffin mixture; and b. recycling said hydrogenated product of (a) for nitration with said n-paraffin.
Claim 3
Dependent Claim
19 words
A process according to claim 1 wherein said paraffin and oxygenated by-product have from 6 to 30 carbon atoms.
Claim 4
Dependent Claim
40 words
A process according to claim 1 wherein said Group VIII metal is platinum, palladium, rhodium, ruthenium, nickel or cobalt and where said metal is present in an amount of from about 0.1 to 5.0 weight percent based on said catalyst.
Claim 5
Dependent Claim
13 words
A process according to claim 1 wherein said nitrogen is present as ammonia.
Claim 6
Dependent Claim
18 words
A process according to claim 1 wherein from 100 to 3000 parts per million of nitrogen are present.
Claim 7
Dependent Claim
13 words
A process according to claim 1 wherein said organonitrogen compound is ethylene diamine.
Claim 8
Dependent Claim
12 words
A process according to claim 1 wherein said organonitrogen compound is isopropylamine.
Claim 9
Dependent Claim
12 words
A process according to claim 1 wherein said organonitrogen compound is acetonitrile.
Claim 10
Dependent Claim
12 words
A process according to claim 1 wherein said organonitrogen compound is methylamine.
Claim 11
Dependent Claim
14 words
A process according to claim 1 wherein said temperature is from 610° to 700°F.
Claim 12
Dependent Claim
20 words
A process according to claim 1 wherein said mixture is additionally and subsequently hydrogenated at from about 450° to 650°F.
References Cited (Backward Citations)
US3322843A
Cited
US3470252A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-06-01 | 1979-12-01 | 1980-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-06-01 | 1983-12-01 | 1984-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-06-01 | 1987-12-01 | 1988-06-01 | $7700.00 | Window Closed / Lapsed |