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US4705877A
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Novel 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 This invention pertains to novel silanes wherein the silicon atom is bonded to at least one ketoximo group and a carbon atom of a primary or secondary amino group. The remaining substituents on the silicon atom are alkoxy groups and/or monovalent hydrocarbon radicals.
Inventors
- 👤 Gerald A. Gornowicz
- 👤 Chi-Long Lee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:41
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
86 words
A silane represented by the formula (RR'C═NO).sub.x R".sub.(3-x) SiR"'NHR"" where R and R' represent identical or different monovalent hydrocarbon radicals, R" represents a monovalent hydrocarbon radical, a monovalent fluorinated hydrocarbon radical, or an alkoxy group containing from 1 to 4 carbon atoms, with the proviso that when more than one R" substituent is present these substituents can be identical or different, R"' represents a divalent hydrocarbon radical, R"" represents a monovalent hydrocarbon radical or a hydrogen atom, and x represents the integer 1, 2 or 3.
Claim 2
Dependent Claim
86 words
A silane represented by the formula (RR'C═NO).sub.x R".sub.(3-x) SiR"'NHR"" where R and R' represent identical or different monovalent hydrocarbon radicals, R" represents a monovalent hydrocarbon radical, a monovalent fluorinated hydrocarbon radical, or an alkoxy group containing from 1 to 4 carbon atoms, with the proviso that when more than one R" substituent is present these substituents can be identical or different, R"' represents a divalent hydrocarbon radical, R"" represents a monovalent hydrocarbon radical or a hydrogen atom, and x represents the integer 1, 2 or 3.
Claim 3
Dependent Claim
73 words
A silane 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, R" represents alkyl containing from 1 to 20 carbon atoms or fluoroalkyl containing from 3 to 20 carbon atom, the divalent hydrocarbon radical represented by R'" is alkylene containing from 1 to 20 carbon atoms or phenylene and x is 1 or 2.
Claim 4
Dependent Claim
43 words
A silane according to claim 2 where said alkyl and alkylene radicals 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
42 words
A silane according to claim 3 where R, R"" and at least one of the substituents represented by R" are methyl, any remaining R" substituents are methoxy, R' is ethyl and R'" is propylene or --CH 2 CH(CH) 3 CH 2 --.
References Cited (Backward Citations)
US2672473A
Cited
US3146250A
Cited
US3189576A
Cited
US3674738A
Cited
US3697568A
Cited
JPS5716893A
Cited
JPS604837A
Cited
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 |