US4254061A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of monomethylamine
Assignee: EIDP Inc
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Filing: 1979-09-11
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Granted: 1981-03-03
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Expires: 1999-09-11
Abstract
Abstract Catalytic process for producing monomethylamine from methanol and ammonia, said process comprising reacting methanol and ammonia, in such amounts so as to provide a C/N ratio, from the methanol and ammonia reactants, of 0.5-1.5, over the catalyst selected from (a) mordenite wherein the primary cation is Li, Na, HNa having at least 2% Na by weight, K, Ca, Sr, Ba, Ce, Zn or Cr (b) ferrierite wherein the primary metal cation is Li, Na, K, Ca, Sr, Ba, Ce or Fe (c) erionite ore (d) calcium erionite and (e) clinoptilolite ore, at a temperature of 250°-475° C. and a pressure of 7-7000 kPa, a contact time, normalized to 7 kPa, of 0.1 to 60 seconds and a methanol conversion of 15-95%.
Inventors
- 👤 Frank J. Weigert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:14
CPC Classifications
C; C07; C07C; C07C209/00; C07C209/04; C07C209/14; C07C209/16
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
119 words
Catalytic process for producing monomethylamine from methanol and ammonia, said process comprising reacting methanol and ammonia, in such amounts so as to provide a C/N ratio, from the methanol and ammonia reactants, of 0.5-1.5, over the catalyst selected from (a) mordenite wherein the primary cation is Li, Na, HNa having at least 2% Na by weight, K, Ca, Sr, Ba, Ce, Zn or Cr (b) ferrierite wherein the primary metal cation is Li, Na, K, Ca, Sr, Ba, Ce or Fe (c) erionite ore (d) calcium erionite and (e) clinoptilolite ore, at a temperature of 250°-475° C., a pressure of 7-7000 kPa, a contact time, normalized to 7 kPa pressure, of 0.1-60 seconds and a methanol conversion of 15-95%.
Claim 2
Dependent Claim
119 words
Catalytic process for producing monomethylamine from methanol and ammonia, said process comprising reacting methanol and ammonia, in such amounts so as to provide a C/N ratio, from the methanol and ammonia reactants, of 0.5-1.5, over the catalyst selected from (a) mordenite wherein the primary cation is Li, Na, HNa having at least 2% Na by weight, K, Ca, Sr, Ba, Ce, Zn or Cr (b) ferrierite wherein the primary metal cation is Li, Na, K, Ca, Sr, Ba, Ce or Fe (c) erionite ore (d) calcium erionite and (e) clinoptilolite ore, at a temperature of 250°-475° C., a pressure of 7-7000 kPa, a contact time, normalized to 7 kPa pressure, of 0.1-60 seconds and a methanol conversion of 15-95%.
Claim 3
Dependent Claim
10 words
Process of claim 1 wherein the temperature is 350°-400° C.
Claim 4
Dependent Claim
10 words
Process of claim 1 wherein the catalyst is sodium mordenite.
Claim 5
Dependent Claim
17 words
Process of claim 1 wherein the catalyst is hydrogen-sodium mordenite having at least 2% Na by weight.
Claim 6
Dependent Claim
9 words
Process of claim 1 which is carried out continuously.
Claim 7
Dependent Claim
10 words
Process of claim 1 wherein the pressure is 70-3000 kPa.
Claim 8
Dependent Claim
16 words
Process of claim 1 wherein the contact time, normalized to 7 kPa pressure, is 1-10 seconds.
Claim 9
Dependent Claim
12 words
Process of claim 1 wherein the C/N ratio is 0.95 to 1.05.
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) | 1984-03-02 | 1984-09-01 | 1985-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-03-02 | 1988-09-01 | 1989-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-03-02 | 1992-09-01 | 1993-03-03 | $7700.00 | Window Closed / Lapsed |