US4647664A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catalytic method for the manufacture of N-alkylmorpholines
Assignee: Texaco Inc
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Filing: 1986-06-09
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Granted: 1987-03-03
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Expires: 2006-06-09
Abstract
Abstract N-alkylmorpholines are prepared by passing a reaction mixture over a catalyst composed of titania to which from about 0.5 to about 7 wt. % of phosphorus has been thermally chemically bonded in the form of phosphate linkages, the reaction mixture being composed of a C 1 -C 4 primary alkyl alcohol and a feedstock selected from the class consisting of morpholine, diethanolamine and bis-aminoethylether.
Inventors
- 👤 Steven H. Vanderpool
- 👤 Robert L. Zimmerman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 22:29
CPC Classifications
C; C07; C07D; C07D295/00; C07D295/02; C07D295/023
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
115 words
A method for the manufacture of a C 1 -C 4 N-alkylmorpholine which comprises bringing a reaction mixture into contact with a cyclization catalyst at a temperature of about 250°-400° C. and a pressure of about 0 to 3000 psig. for a period of time sufficient to convert at least a portion of said reaction mixture to a corresponding N-alkylmorpholine; said reaction mixture being composed of a C 1 -C 4 primary alkyl alcohol and a feedstock selected from the group consisting of diethanolamine and bis-aminoethylether; said catalyst composition comprising titania having from about 0.5 to about 7 wt. % of phosphorus thermally chemically bonded to the surface thereof in the form of phosphate bonds.
Claim 2
Independent Claim
115 words
A method for the manufacture of a C 1 -C 4 N-alkylmorpholine which comprises bringing a reaction mixture into contact with a cyclization catalyst at a temperature of about 250°-400° C. and a pressure of about 0 to 3000 psig. for a period of time sufficient to convert at least a portion of said reaction mixture to a corresponding N-alkylmorpholine; said reaction mixture being composed of a C 1 -C 4 primary alkyl alcohol and a feedstock selected from the group consisting of diethanolamine and bis-aminoethylether; said catalyst composition comprising titania having from about 0.5 to about 7 wt. % of phosphorus thermally chemically bonded to the surface thereof in the form of phosphate bonds.
Claim 3
Dependent Claim
25 words
A method as in claim 1 wherein the reaction mixture contains about 1 to 10 mols of said alcohol per mol equivalent of said mixture.
Claim 4
Dependent Claim
11 words
A method as in claim 2 wherein said feedstock is diethanolamine.
Claim 5
Dependent Claim
11 words
A method as in claim 2 wherein said feedstock is bis-aminoethylether.
Claim 6
Dependent Claim
51 words
A method as in claim 1 wherein the reaction mixture contains about 1 to 4 mols of said alcohol per mol equivalent of said feedstock and wherein the reaction is conducted at a temperature of about 200° to about 300° C. and a pressure of about 100 to about 1000 psig.
Claim 7
Dependent Claim
17 words
A method as in claim 5 wherein the primary alcohol is methanol and the feedstock is deithanolamine.
Claim 8
Independent Claim
17 words
A method as in cliam 5 wherein the primary alcohol is methanol and the feedstock is bis-aminoethylether.
Claim 9
Independent Claim
17 words
A method as in cliam 5 wherein the primary alcohol is methanol and the feedstock is bis-aminoethylether.
References Cited (Backward Citations)
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US4105657A
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US4117227A
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US4588842A
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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) | 1990-03-02 | 1990-09-01 | 1991-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-03-02 | 1994-09-01 | 1995-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-03-02 | 1998-09-01 | 1999-03-03 | $7700.00 | Window Closed / Lapsed |