EP0256516A2
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EP
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Process for preparation of alkyleneamines
Assignee: Tosoh Corp
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Filing: 1987-08-12
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Granted: —
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Expires: 2007-08-12
Abstract
Abstract Ammonia and/or an alkyleneamine is reacted with an alkanolamine by using a niobium-containing substance as a catalyst to obtain an alkyleneamine having an increased number of alkylene units. The niobium-containing substance has a high activity and a high heat resistance, and is not or only slightly soluble in the water-containing reaction liquid.
Inventors
- 👤 Yasushi Hara
- 👤 Sadakatsu Kumoi
- 👤 Yukihiro Tsutsumi
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 17:45
CPC Classifications
C; C07; C07C; C07C209/00; C07C209/04; C07C209/14; C07C209/16; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/582
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
41 words
A process for preparing an alkyleneamine having an increased number of alkylene units from a starting material selected from the group consisting of ammonia and alkyleneamines, the starting material is reacted with an alkanolamine in the presence of a niobium-containing substance.
Claim 2
Dependent Claim
41 words
A process for preparing an alkyleneamine having an increased number of alkylene units from a starting material selected from the group consisting of ammonia and alkyleneamines, the starting material is reacted with an alkanolamine in the presence of a niobium-containing substance.
Claim 3
Dependent Claim
18 words
A process according to claim 1, wherein the niobium-containing substance is niobium pentoxide or a niobic acid salt.
Claim 4
Dependent Claim
150 words
A process according to claim 1, wherein the alkyleneamine used as a starting material is selected from the group consisting of: compounds represented by the following formula (I): wherein x₁ is a number of from 2 to 6, y₁ is a number of from 0 to 6, R₁ represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, and Rʹ₁ represents a group represented by the following formula (1): wherein xʹ₁ is a number of from 1 to 6, xʺ₁ is 0 or 1 and yʹ₁ is a number of from 0 to 4, and compounds represented by the following formula (II): wherein x₂ and xʹ₂ are numbers of from 2 to 6, and R₂ and Rʹ₂ represent a group represented by the following formula (2): wherein xʺ₂ is a number of from 2 to 6 and y₂ is a number of from 0 to 5.
Claim 5
Dependent Claim
20 words
A process according to claim 1, wherein the alkyleneamine used as a starting material is an ethyleneamine or a propyleneamine.
Claim 6
Dependent Claim
13 words
A process according to claim 4, wherein the ethyleneamine is ethylenediamine or diethylenetriamine.
Claim 7
Dependent Claim
11 words
A process according to claim 1, wherein the propyleneamine is 1,3-propylenediamine.
Claim 8
Dependent Claim
145 words
A process according to claim 1, wherein the alkanolamine is selected from the group consisting of: compounds represented by the following formula (III): wherein x₃ is a number of from 2 to 6, y₃ is a number of from 0 to 5, R₃ represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, and Rʹ₃ is a group represented by the following formula (3): wherein xʹ₃ is a number of from 1 to 6, xʺ₃ is 0 or 1 and yʹ₃ is a number of from 0 to 4, and compounds represented by the following formula (IV): wherein x₄ , xʹ₄ and xʺ₄ are numbers of from 2 to 6 and R₄ represents a group represented by the following formula (4): wherein x"₄ is a number of from 2 to 6 and y₄ is a number of from 0 to 4.
Claim 9
Dependent Claim
15 words
A process according to claim 1, wherein the alkanolamine is an ethanolamine or a propanolamine.
Claim 10
Dependent Claim
14 words
A process according to claim 8, wherein the ethanolamine is monoethanolamine or N-(2-aminoethyl) ethanolamine.
Claim 11
Dependent Claim
11 words
A process according to claim 8, wherein the propanolamine is 3-amino-1-propanol.
References Cited (Backward Citations)
No citation records indexed.
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