US4481364A
Expired / Lapsed
US
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Preparation of aminopropyltrialkoxysilanes and/or aminoalkylalkoxysilanes
Assignee: General Electric Co
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Filing: 1983-09-26
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Granted: 1984-11-06
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Expires: 2003-09-26
Abstract
Abstract A platinum catalyzed addition of allylamine and N-substituted allyl amines to trialkoxysilanes or alkylalkoxysilanes is improved by running the reaction under pressure at 110°-210° C. and in the presence of a reaction promoter. As a result, the time and the amount of platinum catalyst required for the reaction are significantly reduced and conversion and yield of the product increased.
Inventors
- 👤 Nan S. Chu
- 👤 Bernard Kanner
- 👤 Curtis L. Schilling, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 10:18
CPC Classifications
C; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/18; C07F7/1804; C07F7/1872; C07F7/1876
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
136 words
An improved process for preparing aminoalkylalkoxysilanes which comprises reacting a hydrosilane of the general formula ##STR7## wherein a is zero, one or two, and R and R' are individually monovalent hydrocarbon radicals containing from one to ten carbon atoms inclusive: with an amine of the general formula ##STR8## wherein R 2 and R 3 are individually selected from the group consisting of hydrogen, monovalent hydrocarbon radicals containing from one to ten carbon atoms inclusive, a phenyl or substituted phenyl group ##STR9## and --CH 2 CH 2 NH) n H, wherein n is 1 to 4 and R 4 is individually either hydrogen or a methyl group, said reaction taking place under pressure at a temperature of from 110° to 210° C. in the presence of a platinum-catalyst and, optionally, in the presence of a reaction promoter.
Claim 2
Dependent Claim
136 words
An improved process for preparing aminoalkylalkoxysilanes which comprises reacting a hydrosilane of the general formula ##STR7## wherein a is zero, one or two, and R and R' are individually monovalent hydrocarbon radicals containing from one to ten carbon atoms inclusive: with an amine of the general formula ##STR8## wherein R 2 and R 3 are individually selected from the group consisting of hydrogen, monovalent hydrocarbon radicals containing from one to ten carbon atoms inclusive, a phenyl or substituted phenyl group ##STR9## and --CH 2 CH 2 NH) n H, wherein n is 1 to 4 and R 4 is individually either hydrogen or a methyl group, said reaction taking place under pressure at a temperature of from 110° to 210° C. in the presence of a platinum-catalyst and, optionally, in the presence of a reaction promoter.
Claim 3
Dependent Claim
16 words
The process of claim 1 wherein the reaction temperature is from 130° C. to 170° C.
Claim 4
Dependent Claim
27 words
The process of claim 1 wherein the platinum catalyst concentration is from 5 to 30 ppm based on the total weight of the silane and amine charge.
Claim 5
Dependent Claim
27 words
The process of claim 3 wherein the platinum catalyst concentration is from 10 to 25 ppm based on the total weight of the silane and amine charge.
Claim 6
Dependent Claim
24 words
The process of claim 1 wherein the reaction promoter is used at a concentration of 0.5 to 10 mole percent of the silane charge.
Claim 7
Dependent Claim
25 words
The process of claim 5 wherein the reaction promoter is used at a concentration of from 1.5 to 2.5 mole percent of the silane charge.
Claim 8
Dependent Claim
27 words
The process of claim 1 wherein the silane is such that a is zero or one and R and R 1 are either methyl or ethyl groups.
Claim 9
Dependent Claim
22 words
The process of claim 1 wherein the amine is such that R 2 , R 3 and R 4 are all hydrogen.
Claim 10
Dependent Claim
10 words
The process of claim 1 wherein the amine is methallylamine.
Claim 11
Dependent Claim
10 words
The process of claim 1 wherein the amine is diallylamine.
Claim 12
Dependent Claim
10 words
The process of claim 1 wherein the amine is triallylamine.
Claim 13
Dependent Claim
50 words
The process of claim 1 wherein the ratio of silane to amine as such is between 1.5:1 to 1:1.5 when the amine is alkylamine or its derivative, 2.0:1 to 2.5:1 when the amine is diallylamine or its derivative, and 3.0:1 to 4.5:1 when the amine is triallylamine or its derivative.
Claim 14
Dependent Claim
15 words
The process of claim 1 wherein the reaction promoter is an alkali-metal carbonate or bicarbonate.
Claim 15
Dependent Claim
82 words
An improved process for preparing aminoalkylalkoxysilanes which comprises reacting a hydrosilane of the general formula: ##STR10## wherein a is zero or one, and R and R 1 are individually ethyl or methyl groups with an amine of the general formula ##STR11## wherein R 2 , R 3 and R 4 are as defined in claim 1, said reaction taking place under pressure at a temperature of from 130° to 170° C. in the presence of a platinum catalyst and a reaction promoter.
Claim 16
Dependent Claim
27 words
The process of claim 14 wherein the platinum catalyst concentration is from 5 to 30 ppm based on the total weight of the silane and amine charge.
Claim 17
Dependent Claim
27 words
The process of claim 14 wherein the platinum catalyst concentration is from 10 to 25 ppm based on the total weight of the silane and amine charge.
Claim 18
Dependent Claim
24 words
The process of claim 14 wherein the reaction promoter is used at a concentration of 0.5 to 10 mole percent of the silane charge.
Claim 19
Dependent Claim
25 words
The process of claim 14 wherein the reaction promoter is used at a concentration of from 1.5 to 2.5 mole percent of the silane charge.
Claim 20
Dependent Claim
22 words
The process of claim 14 wherein the amine is such that R 2 , R 3 and R 4 use all hydrogen.
Claim 21
Dependent Claim
10 words
The process of claim 14 wherein the amine is methallylamine.
Claim 22
Dependent Claim
10 words
The process of claim 14 wherein the amine is diallylamine.
Claim 23
Dependent Claim
10 words
The process of claim 14 wherein the amine is triallylamine.
Claim 24
Dependent Claim
50 words
The process of claim 14 wherein the ratio of silane to amine as such is between 1.5:1 to 1:1.5 when the amine is allkylamine or its derivative, 2.0:1 to 2.5:1 when the amine is diallylamine or its derivative, and 3.0:1 to 4.5:1 when the amine is triallylamine or its derivative.
Claim 25
Dependent Claim
15 words
The process of claim 14 wherein the reaction promoter is an alkali-metal carbonate or bicarbonate.
Claim 26
Dependent Claim
12 words
The process of claim 24 wherein the reaction promoter is sodium carbonate.
Claim 27
Dependent Claim
12 words
The process of claim 24 wherein the reaction promoter is sodium bicarbonate.
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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) | 1987-11-06 | 1988-05-07 | 1988-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-11-06 | 1992-05-07 | 1992-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-11-06 | 1996-05-07 | 1996-11-06 | $7700.00 | Window Closed / Lapsed |