US4705878A
Expired / Lapsed
US
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Method for preparing aminohydrocarbyl-substituted ketoximosilanes
Assignee: Dow Silicones Corp
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Filing: 1987-02-25
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Granted: 1987-11-10
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Expires: 2007-02-25
Abstract
Abstract In accordance with the present method a ketoximoaminoalkylsilane is prepared by reacting a ketoxime of the formula RR'C═NOH with a silane of the formula ##STR1## where R and R' represent monovalent hydrocarbon radicals, each of the two substituents represented by R" is, individually, a monovalent hydrocarbon radical, a monovalent fluorinated hydrocarbon radical or an alkoxy radical, R"" represents a monovalent hydrocarbon radical or a hydrogen atom, and R'" represents an alkylene radical containing from 3 to 6 carbon atoms.
Inventors
- 👤 Gerald A. Gornowicz
- 👤 Chi-Long Lee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:16
CPC Classifications
C; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/18; C07F7/1804; C07F7/1872; C07F7/188; C07F7/0834; C07F7/0892
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
121 words
A method for preparing an organosilane represented by the formula (RR'C═NO)R".sub.2 SiR"'NR""H, where R and R' represent identical or different monovalent hydrocarbon radicals, the two R" substituents individually represent a monovalent hydrocarbon radical, a monovalent fluorinated hydrocarbon radical or an alkoxy group, R"' represents an alkylene radical containing from 3 to 6 carbon atoms, and R"" represents a monovalent hydrocarbon radical or a hydrogen atom, said method comprising the steps of (1) reacting under a substantially anhydrous, inert atmosphere and at a temperature of from 30 to 100 degrees C. a ketoxime of the formula RR'C═NOH and an organosilicon compound of the formula ##STR6## for a sufficient time to form said organosilane, and (2) isolating said organosilane from the reaction mixture.
Claim 2
Independent Claim
121 words
A method for preparing an organosilane represented by the formula (RR'C═NO)R".sub.2 SiR"'NR""H, where R and R' represent identical or different monovalent hydrocarbon radicals, the two R" substituents individually represent a monovalent hydrocarbon radical, a monovalent fluorinated hydrocarbon radical or an alkoxy group, R"' represents an alkylene radical containing from 3 to 6 carbon atoms, and R"" represents a monovalent hydrocarbon radical or a hydrogen atom, said method comprising the steps of (1) reacting under a substantially anhydrous, inert atmosphere and at a temperature of from 30 to 100 degrees C. a ketoxime of the formula RR'C═NOH and an organosilicon compound of the formula ##STR6## for a sufficient time to form said organosilane, and (2) isolating said organosilane from the reaction mixture.
Claim 3
Dependent Claim
50 words
A method according to claim 1 where said monovalent hydrocarbon radicals represented by R, R', and R"" are, individually, alkyl containing from 1 to 20 carbon atoms, cycloalkyl, or aryl and R" represents alkyl containing from 1 to 20 carbon atoms or fluoroalkyl containing from 3 to 20 carbon atoms.
Claim 4
Dependent Claim
41 words
A method according to claim 2 where said alkyl radical contain from 1 to 4 carbon atoms, said cycloalkyl radical is cyclohexyl, said aryl radical is phenyl, said fluoroalkyl radical is 3,3,3-trifluoropropyl and any alkoxy radicals represented by R" are methoxy.
Claim 5
Dependent Claim
44 words
A method according to claim 3 where R, R"41 and at least one of the substituents represented by R" are methyl, any remaining R" substituents are methoxy, R' is ethyl and said alkylene radical is propylene or --CH 2 CH(CH) 3 CH 2 --.
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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) | 1990-11-09 | 1991-05-11 | 1991-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-11-09 | 1995-05-11 | 1995-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-11-09 | 1999-05-11 | 1999-11-10 | $7700.00 | Window Closed / Lapsed |