US4491669A
Expired / Lapsed
US
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Mixed alkoxyaminosilanes, methods of making same and vulcanizing silicons prepared therefrom
Assignee: Evonik Corp
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Filing: 1980-11-12
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Granted: 1985-01-01
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Expires: 2000-11-12
Abstract
Abstract The preparation of pure mixed alkoxyaminosilanes is described corresponding to the general formula: R.sub.m Si(OR').sub.n (NR"R'").sub.p wherein: R is hydrogen, short chain alkyl or alkenyl or aryl; R" and R'" are separately either hydrogen, short chain alkyl or aryl, at least one being other than hydrogen; R' is short chain alkyl or aryl; and m, n and p are integers such that m+n+p=4 and n and p are at least one each. The obtained compounds are employed in endcapping of polysiloxanes having terminal silane groups.
Inventors
- 👤 Barry C. Arkles
- 👤 William R. Peterson, Jr.
- 👤 Joseph M. Rokowski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 11:13
CPC Classifications
C; C07; C07F; C07F7/00; C07F7/02; C07F7/025; C07F7/08; C07F7/18; C07F7/1804
Claims Analysis
Total Claims: 38
Claim 1
Independent Claim
60 words
Compounds of the formula R.sub.m Si(OR').sub.n (NR"R"').sub.p wherein: R is hydrogen, short chain alkyl or alkenyl or aryl group; R" and R"' are each short chain alkyl; R' is short chain alkyl or aryl, at least one R' being ethyl; and m, n and p are integers such that m+n+p=4, and m, n, and p are at least one each.
Claim 2
Dependent Claim
60 words
Compounds of the formula R.sub.m Si(OR').sub.n (NR"R"').sub.p wherein: R is hydrogen, short chain alkyl or alkenyl or aryl group; R" and R"' are each short chain alkyl; R' is short chain alkyl or aryl, at least one R' being ethyl; and m, n and p are integers such that m+n+p=4, and m, n, and p are at least one each.
Claim 3
Dependent Claim
15 words
Compounds according to claim 1 wherein at least one R substituent is methyl or ethyl.
Claim 4
Dependent Claim
16 words
Compounds according to claim 1 wherein p is one and R" and R"' are each methyl.
Claim 5
Dependent Claim
15 words
Compounds according to claim 1 wherein m is 2 and each R component is methyl.
Claim 6
Dependent Claim
1 words
Methyl(dimethylamino)ethoxysilane.
Claim 7
Dependent Claim
1 words
Methyl(dimethylamino)ethoxysilane.
Claim 8
Dependent Claim
1 words
Diethoxy(dimethylamino)silane.
Claim 9
Dependent Claim
1 words
Diethoxy(dimethylamino)silane.
Claim 10
Dependent Claim
1 words
Methyldiethoxy(dimethylamino)silane.
Claim 11
Dependent Claim
1 words
Methyldiethoxy(dimethylamino)silane.
Claim 12
Dependent Claim
1 words
Methyl[bis(dimethylamino)]ethoxysilane.
Claim 13
Dependent Claim
1 words
Methyl[bis(dimethylamino)]ethoxysilane.
Claim 14
Dependent Claim
1 words
Dimethoxy(dimethylamino)silane.
Claim 15
Dependent Claim
1 words
Dimethoxy(dimethylamino)silane.
Claim 16
Dependent Claim
1 words
Dimethyl(dimethylamino)ethoxysilane.
Claim 17
Dependent Claim
1 words
Dimethyl(dimethylamino)ethoxysilane.
Claim 18
Dependent Claim
1 words
Vinyldiethoxy(dimethylamino)silane.
Claim 19
Dependent Claim
1 words
Vinyldiethoxy(dimethylamino)silane.
Claim 20
Independent Claim
126 words
The method of preparing pure organosilane compounds having directly attached to the silicon atom thereof at least one amino group and at least one alkoxy or aryloxy group, which comprises: (a) redistilling in glass a polychlorosilane compound to reduce iron and copper impurities to below ten parts per million, (b) decontaminating reaction glassware to remove high surface concentrations of boron, aluminum and alkali metals such that concentrations of iron, copper and aluminum in the reaction mixture do not exceed one hundred parts per million, (c) reacting in said decontaminated reaction glassware said redistilled polychlorosilane compound with an anhydrous alcohol under conditions to replace at least one chloro with an alkoxy or aryloxy group, and (d) reacting the product obtained in step (c) with an amino compound.
Claim 21
Independent Claim
126 words
The method of preparing pure organosilane compounds having directly attached to the silicon atom thereof at least one amino group and at least one alkoxy or aryloxy group, which comprises: (a) redistilling in glass a polychlorosilane compound to reduce iron and copper impurities to below ten parts per million, (b) decontaminating reaction glassware to remove high surface concentrations of boron, aluminum and alkali metals such that concentrations of iron, copper and aluminum in the reaction mixture do not exceed one hundred parts per million, (c) reacting in said decontaminated reaction glassware said redistilled polychlorosilane compound with an anhydrous alcohol under conditions to replace at least one chloro with an alkoxy or aryloxy group, and (d) reacting the product obtained in step (c) with an amino compound.
Claim 22
Independent Claim
103 words
The method of preparing pure organosilane compounds having directly attached to the silicon atom thereof at least one amino group and an alkoxy or aryloxy group, which comprises: (a) decontaminating reaction glassware to remove high surface concentrations of boron, aluminum and alkali metals such that concentrations of iron, copper and aluminum in the reaction mixture do not exceed one hundred parts per million, and (b) reacting in said decontaminated reaction glassware an organosilane compound, having at least two amino substituents directly attached to the silicon atom, with an anhydrous alcohol to replace one of said amino substituents by an alkoxy or aryloxy group.
Claim 23
Independent Claim
103 words
The method of preparing pure organosilane compounds having directly attached to the silicon atom thereof at least one amino group and an alkoxy or aryloxy group, which comprises: (a) decontaminating reaction glassware to remove high surface concentrations of boron, aluminum and alkali metals such that concentrations of iron, copper and aluminum in the reaction mixture do not exceed one hundred parts per million, and (b) reacting in said decontaminated reaction glassware an organosilane compound, having at least two amino substituents directly attached to the silicon atom, with an anhydrous alcohol to replace one of said amino substituents by an alkoxy or aryloxy group.
Claim 24
Dependent Claim
18 words
The method according to claim 12 wherein said amino compound is a dialkylamine having short chain alkyl groups.
Claim 25
Dependent Claim
12 words
The method according to claim 12 wherein said amino compound is dimethylamine.
Claim 26
Dependent Claim
12 words
The method according to claim 12 wherein said polychlorosilane is an alkyldichlorosilane.
Claim 27
Dependent Claim
11 words
The method according to claim 12 wherein said polychlorosilane is trichlorosilane.
Claim 28
Dependent Claim
14 words
The method according to claim 12 or 17 wherein said polychlorosilane is an alkyltrichlorosilane.
Claim 29
Dependent Claim
25 words
The method according to claim 12 wherein said polychlorosilane is a trichloro compound and is reacted with two moles alcohol per mole of said trichlorosilane.
Claim 30
Dependent Claim
35 words
The method according to claim 12 wherein said amino compound is added to the reaction in an amount of twice the amount of amine group desired to be added to the product of step (c).
Claim 31
Dependent Claim
10 words
The method of claim 13 wherein said alcohol is ethanol.
Claim 32
Dependent Claim
14 words
The method of claim 13 or 21 wherein said amino-containing organosilane compound is bis(dimethylamino)dimethylsilane.
Claim 33
Dependent Claim
5 words
The product identified as αω(diethoxyhydrosilyl)polydimethylsiloxane.
Claim 34
Dependent Claim
5 words
The product identified as αω(diethoxyhydrosilyl)polydimethylsiloxane.
Claim 35
Dependent Claim
60 words
Compounds of the formula R.sub.m Si(OR').sub.n (NR"R"').sub.p wherein: R is hydrogen, short chain alkyl or alklenyl or aryl group, at least one R being vinyl; R" and R"' are each short chain alkyl; R' is short chain alkyl or aryl; and m, n and p are integers such that m+n+p=4, and m, n and p are at least one each.
Claim 36
Dependent Claim
60 words
Compounds of the formula R.sub.m Si(OR').sub.n (NR"R"').sub.p wherein: R is hydrogen, short chain alkyl or alklenyl or aryl group, at least one R being vinyl; R" and R"' are each short chain alkyl; R' is short chain alkyl or aryl; and m, n and p are integers such that m+n+p=4, and m, n and p are at least one each.
Claim 37
Independent Claim
67 words
A method comprising endcapping a silane terminated polysiloxane by reaction with a silane compound of the formula R.sub.m Si(OR').sub.n (NR"R"').sub.p wherein: R is hydrogen, short chain alkyl or alkenyl or aryl group; R" and R"' are each short chain alkyl; R' is short chain alkyl or aryl; and m, n and p are integers such that m+n+p=4, and m, n and p are at least one each.
Claim 38
Independent Claim
67 words
A method comprising endcapping a silane terminated polysiloxane by reaction with a silane compound of the formula R.sub.m Si(OR').sub.n (NR"R"').sub.p wherein: R is hydrogen, short chain alkyl or alkenyl or aryl group; R" and R"' are each short chain alkyl; R' is short chain alkyl or aryl; and m, n and p are integers such that m+n+p=4, and m, n and p are at least one each.
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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) | 1988-01-01 | 1988-07-02 | 1989-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-01-01 | 1992-07-02 | 1993-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-01-01 | 1996-07-02 | 1997-01-01 | $7700.00 | Window Closed / Lapsed |