US3714259A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of linear polyethylene polyamines
Assignee: Texaco Inc
•
Filing: 1970-08-20
•
Granted: 1973-01-30
•
Expires: 1990-08-20
Abstract
Abstract A catalytic process is provided for discriminately producing linear polyethylene polyamines wherein linear products are obtained by reacting an ethyleneamine compound with an ethanolamine compound under select process conditions.
Inventors
- 👤 M Lichtenwalter
- 👤 T Howard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:23
CPC Classifications
C; C07; C07C; C07C209/00; C07C209/04; C07C209/14; C07C209/16
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
152 words
A direct process for preparing salt-free poly(ethyleneamines) comprising contacting in the presence of hydrogen and a hydrogenation catalyst an ethylene-diamine compound represented by the following formula: and an ethanolamine compound represented by the following formula: wherein y is hydrogen or CH3 and Z is NH2 or and x is an integer from 1 to 4 wherein said contacting is conducted in the essential absence of ammonia at a temperature in the range of about 140* to 170*C. and at pressures sufficient to maintain the reactants essentially in the liquid phase and wherein the total weight in grams of said ethanolamine compound and said ethylenediamine compound employed per milliliter of catalyst volume per hour is in the range of about 1 to 5 and wherein said ethanolamine compound and said ethylenediamine compound are employed in amounts such that in admixture the ethanolamine compound represents about 30 to 70 mol percent of said admixture.
Claim 2
Dependent Claim
152 words
A direct process for preparing salt-free poly(ethyleneamines) comprising contacting in the presence of hydrogen and a hydrogenation catalyst an ethylene-diamine compound represented by the following formula: and an ethanolamine compound represented by the following formula: wherein y is hydrogen or CH3 and Z is NH2 or and x is an integer from 1 to 4 wherein said contacting is conducted in the essential absence of ammonia at a temperature in the range of about 140* to 170*C. and at pressures sufficient to maintain the reactants essentially in the liquid phase and wherein the total weight in grams of said ethanolamine compound and said ethylenediamine compound employed per milliliter of catalyst volume per hour is in the range of about 1 to 5 and wherein said ethanolamine compound and said ethylenediamine compound are employed in amounts such that in admixture the ethanolamine compound represents about 30 to 70 mol percent of said admixture.
Claim 3
Dependent Claim
54 words
The process according to claim 1 wherein said contacting is conducted at a temperature in the range of about 145* to 165*C. and wherein the total weight in grams of said ethanolamine compound and said ethylenediamine compound employed per milliliter of catalyst volume per hour is in the range of about 1.75 to 3.75.
Claim 4
Dependent Claim
25 words
The process according to claim 2 wherein said ethylenediamine compound is represented by the following formula: and x is an integer from 1 to 3.
Claim 5
Dependent Claim
20 words
The process according to claim 1 wherein said ethylenediamine compound is ethylenediamine or diethylenetriamine and said ethanolamine compound is monoethanolamine.
Claim 6
Dependent Claim
12 words
The process according to claim 4 wherein said ethylenediamine compound is ethylenediamine.
Claim 7
Dependent Claim
30 words
The process according to claim 5 wherein said hydrogenation catalyst comprises 72 to 75 mol percent nickel, 20 to 25 mol percent copper and 1 to 3 mol percent chromium.
Claim 8
Dependent Claim
19 words
The process according to claim 6 wherein the mol ratio of said ethylenediamine to said monoethanolamine is about 1:1.
Claim 9
Dependent Claim
20 words
The process according to claim 4 wherein said ethanolamine compound represeNts about 40 to 60 mol percent of said admixture.
References Cited (Backward Citations)
US3121115A
Cited
US3383417A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-01-30 | 1976-07-31 | 1977-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-30 | 1980-07-31 | 1981-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-30 | 1984-07-31 | 1985-01-30 | $7700.00 | Window Closed / Lapsed |