EP0150558A2
Expired / Lapsed
EP
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The preparation of linear polyethylene polyamines with silica-alumina catalysts
Assignee: Texaco Development Corp
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Filing: 1984-09-11
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Granted: —
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Expires: 2004-09-11
Abstract
Abstract Disclosed is a process for preparing predominantly linear polyethylenepolyamines from the catalyzed reaction of (1) an ethyleneamine and an alkanolamine, (2) ethyleneamines or (3) an alkanolamine and ammonia. The catalyst employed is a silica-alumina catalyst. An acidic phosphorus cocatalyst may be used in conjunction with the silica-alumina catalyst.
Inventors
- 👤 Michael Edward Brennan
- 👤 James Herbert Templeton
- 👤 Ernest Leon Yeakey
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 18:19
CPC Classifications
C; C07; C07C; C07C209/00; C07C209/04; C07C209/14; C07C209/16
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
56 words
A method of preparing predominantly linear polyethylenepolyamines from ethyleneamines and alkanolamines, which comprises: mixing and reacting an ethyleneamine with an alkanolamine at a temperature of about 250°C to about 400°C and a pressure of about 500 to about 5000 psig (3.5 to 34.5 MPa) in the presence of a catalytically effective amount of a silica-alumina catalyst.
Claim 2
Independent Claim
56 words
A method of preparing predominantly linear polyethylenepolyamines from ethyleneamines and alkanolamines, which comprises: mixing and reacting an ethyleneamine with an alkanolamine at a temperature of about 250°C to about 400°C and a pressure of about 500 to about 5000 psig (3.5 to 34.5 MPa) in the presence of a catalytically effective amount of a silica-alumina catalyst.
Claim 3
Independent Claim
48 words
A method of preparing predominantly linear polyethylenepolyamines from ethyleneamines, which comprises: reacting ethyleneamines at a temperature of about 250°C to about 400°C and a pressure of about 500 to about 5000 psig (3.5 to 34.5 MPa) in the presence of a catalytically effective amount of a silica-alumina catalyst.
Claim 4
Independent Claim
48 words
A method of preparing predominantly linear polyethylenepolyamines from ethyleneamines, which comprises: reacting ethyleneamines at a temperature of about 250°C to about 400°C and a pressure of about 500 to about 5000 psig (3.5 to 34.5 MPa) in the presence of a catalytically effective amount of a silica-alumina catalyst.
Claim 5
Independent Claim
53 words
A method of preparing predominantly linear polyethylenepolyamines from alkanolamines and ammonia, which comprises: reacting an alkanolamine with ammonia at a temperature of about 250°C to about 400°C and a pressure of about 500 to about 5000 psig (3.5 to 34.5 MPa) in the presence of a catalytically effective amount of a silica-alumina catalyst.
Claim 6
Independent Claim
53 words
A method of preparing predominantly linear polyethylenepolyamines from alkanolamines and ammonia, which comprises: reacting an alkanolamine with ammonia at a temperature of about 250°C to about 400°C and a pressure of about 500 to about 5000 psig (3.5 to 34.5 MPa) in the presence of a catalytically effective amount of a silica-alumina catalyst.
Claim 7
Independent Claim
31 words
A method as claimed in a preceding claim, characterised in that the catalytically effective amount of catalyst is 0.01 to about 20.0 weight percent, based on the amount of alkanolamine present.
Claim 8
Independent Claim
17 words
A method as claimed in a preceding claim, characterised by the presence of an acidic phosphorus cocatalyst.
Claim 9
Dependent Claim
17 words
A method as claimed in Claim 5, characterised in that the acidic phosphorus cocatalyst is phosphorous acid.
Claim 10
Dependent Claim
30 words
A method as claimed in Claim 1, characterised in that about one-half mole to about 5 moles of ethyleneamine per mole of alkanolamine are mixed and reacted with said alkanolamine.
Claim 11
Dependent Claim
40 words
A method as claimed in Claim 1, characterised in that the ethyleneamine and alkanolamine are reacted in a continuous manner with said catalyst at a weight hourly space velocity of about 0.1 to about 10 wt of feed/hour/volume of catalyst.
Claim 12
Independent Claim
23 words
A method as claimed in a preceding claim, characterised in that the silica-alumina catalyst contains about 50°c to about 90% silica by weight.
References Cited (Backward Citations)
No citation records indexed.
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