US3919276A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of preparing amines and amides
Assignee: Dow Silicones Corp
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Filing: 1974-07-31
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Granted: 1975-11-11
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Expires: 1994-07-31
Abstract
Abstract Amines and amides are prepared by reacting certain aliphatic, cycloaliphatic and aromatic chlorides with N,N-substituted triorganosilyl amines or N-substituted triorganosilyl amides. A typical reaction is
Inventors
- 👤 Grow Gary E Le
- 👤 John L Speier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 01:10
CPC Classifications
C; C07; C07C; C07C209/00; C07C209/04; C07C209/06; C07C209/08; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/0803; C07F7/081; C07F7/12; C07F7/121; C07F7/123; C07F7/18; C07F7/1804
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
111 words
A METHOD COMPRISING REACTING A COMPOUND OF THE FORMULA (1) R3SINR''2 OR R3SINHO=CR'' WITH A CHLORIDE OF THE FORMULA (2) R"CI AT A TEMPERATURE AND PRESSURE WHEREBY COMPOUNDS OF THE FORMULA R"NR''2 AND R"NHO=CR'' RESPECTIVELY ARE OBTAINED IN WHICH R AND R'' ARE ALKYL GROUPS AND R" IS A HYDROCARBON RADICAL HAVING NO ALIPHATIC CARBON-CARBON UNSATURATION BETA TO THE CHLORINE OR A SILYL SIBSTITUTED HYDROCARBON RADICAL OF THE FORMULA X3SIQ- IN WHICH X IS ALKYL, CHLORINE OR ALKOXY AND Q IS DIVALENT HYDROCARBON RADICAL HAVING NO CARBON-CAR BON ALIPHATIC UNSATURATION BETA TO THE CHLORINE AND OF SUCH SIZE THAT THE CHLORINE IS AT LEAST 3 CARBON ATOMS REMOVED FROM THE SILICON.
Claim 2
Independent Claim
111 words
A METHOD COMPRISING REACTING A COMPOUND OF THE FORMULA (1) R3SINR''2 OR R3SINHO=CR'' WITH A CHLORIDE OF THE FORMULA (2) R"CI AT A TEMPERATURE AND PRESSURE WHEREBY COMPOUNDS OF THE FORMULA R"NR''2 AND R"NHO=CR'' RESPECTIVELY ARE OBTAINED IN WHICH R AND R'' ARE ALKYL GROUPS AND R" IS A HYDROCARBON RADICAL HAVING NO ALIPHATIC CARBON-CARBON UNSATURATION BETA TO THE CHLORINE OR A SILYL SIBSTITUTED HYDROCARBON RADICAL OF THE FORMULA X3SIQ- IN WHICH X IS ALKYL, CHLORINE OR ALKOXY AND Q IS DIVALENT HYDROCARBON RADICAL HAVING NO CARBON-CAR BON ALIPHATIC UNSATURATION BETA TO THE CHLORINE AND OF SUCH SIZE THAT THE CHLORINE IS AT LEAST 3 CARBON ATOMS REMOVED FROM THE SILICON.
Claim 3
Dependent Claim
20 words
A method in accordance with claim 1 in which (1 ) is a silyl dialkyl amine and R'''' is X3SiQ-.
Claim 4
Dependent Claim
20 words
A method in accordance with claim 1 in which (1) is a silyl amide and in which R'''' is X3SiQ-.
References Cited (Backward Citations)
US2971970A
Cited
US3776933A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-11-10 | 1979-05-12 | 1979-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-10 | 1983-05-12 | 1983-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-10 | 1987-05-12 | 1987-11-11 | $7700.00 | Window Closed / Lapsed |