US3860650A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the production of organic amines
Assignee: Scientific Design LLC
•
Filing: 1969-05-27
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Granted: 1975-01-14
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Expires: 1989-05-27
Abstract
Abstract A process and catalyst for the production of organic amines by amination of phenolic type compounds are shown. The catalyst consists essentially of alumina derived from a precipitated gel form and contains less than 1.0 weight percent of alkali metal.
Inventors
- 👤 Mitchell Becker
- 👤 Sargis Khoobiar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:09
CPC Classifications
B; B01; B01J; B01J21/00; B01J21/02; B01J21/04; C; C07; C07C; C07C209/00; C07C209/04; C07C209/14; C07C209/18; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/584
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
70 words
A process for the production of aniline from phenol and ammonia, according to claim 1, wherein ammonia and phenol are reacted in the vapor phase in the presence of an alumina catalyst derived from a precipitated gel, said dried gel having been leached with an acid, an acid salt or water to reduce the alkali metal content thereof to less than 1.0 percent by weight, expressed as alkali metal oxide.
Claim 2
Dependent Claim
15 words
A process according to claim 2 wherein said catalyst is leached with aqueous boric acid.
Claim 3
Dependent Claim
15 words
A process according to claim 2 wherein said catalyst is leached with aqueous hydrochloric acid.
Claim 4
Dependent Claim
13 words
A process according to claim 1 wherein the alcohol is 4-hydroxy phenyl methane.
Claim 5
Dependent Claim
15 words
A process according to claim 1 wherein the alcohol is 2,2 bis (4, hydroxyphenyl) propane.
Claim 6
Dependent Claim
38 words
A process according to claim 1 wherein the catalyst is leached with an acid, an acid salt or water to reduce the alkali metal content thereof to less than 1.0 percent by weight expressed as alkali metal oxide.
Claim 7
Dependent Claim
16 words
A process in accordance with claim 7 wherein said catalyst is leached with aqueous boric acid.
Claim 8
Dependent Claim
16 words
A process in accordance with claim 7 wherein said catalyst is leached with aqueous hydrochloric acid.
References Cited (Backward Citations)
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Cited
US1992935A
Cited
US2013873A
Cited
US3272865A
Cited
US3231616A
Cited
US3384667A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-01-13 | 1978-07-15 | 1979-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-01-13 | 1982-07-15 | 1983-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-01-13 | 1986-07-15 | 1987-01-14 | $7700.00 | Window Closed / Lapsed |