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US4855470A
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Organosilanes containing benzoyl thiourea groups and method of preparation
Assignee: Evonik Operations GmbH
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Filing: 1988-02-10
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Granted: 1989-08-08
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Expires: 2008-02-10
Abstract
Abstract ##STR1## are presented in which R 1 =phenyl or nitrophenyl, R 2 is an entity of the formula R.sup.4 --Si(OR).sub.3 R 4 =alkylene, cycloalkylene or an entity of the formula: ##STR2## whereby n=1-6, R=alkyl containing C 1 -C 3 and R 3 =R 2 or H. A method of preparing these compounds is also disclosed.
Inventors
- 👤 Peter Panster
- 👤 Horst Grethe
- 👤 Peter Kleinschmit
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:01
CPC Classifications
C; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/18; C07F7/1804
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
107 words
An organosilane containing benzol thiourea compound of the formula ##STR23## whereby R 1 stands for phenyl or for a phenyl group substituted with an NO 2 group, R 2 is of the formula R.sup.4 --Si(OR).sub.3 in which R 4 is alkylene with 1 to 10 C atoms or cycloalkylene with 5 to 8 C atoms, or of the formula ##STR24## in which n is a number from 1 to 6, and R is linear or branched alkyl with 1 to 3 C atoms, R 3 has the same meaning as R 2 and can be identical with or different from R 2 or R 3 is H.
Claim 2
Dependent Claim
107 words
An organosilane containing benzol thiourea compound of the formula ##STR23## whereby R 1 stands for phenyl or for a phenyl group substituted with an NO 2 group, R 2 is of the formula R.sup.4 --Si(OR).sub.3 in which R 4 is alkylene with 1 to 10 C atoms or cycloalkylene with 5 to 8 C atoms, or of the formula ##STR24## in which n is a number from 1 to 6, and R is linear or branched alkyl with 1 to 3 C atoms, R 3 has the same meaning as R 2 and can be identical with or different from R 2 or R 3 is H.
Claim 3
Dependent Claim
18 words
An organosilane containing benzoyl thiourea compound according to claim 1, wherein R4 is a linear or branched alkylene.
Claim 4
Dependent Claim
22 words
An organosilane containing benzoyl thiourea compound according to claim 1 with the formula ##STR25## in which R is for methyl or ethyl.
Claim 5
Dependent Claim
22 words
An organosilane containing benzoyl thiourea compound according to claim 1 with the formula ##STR26## in which R is for methyl or ethyl.
Claim 6
Dependent Claim
53 words
A method of preparing a compound according to claim 1 comprising reacting an organosilane amine of the formula ##STR27## in which R 2 and R 3 have the same meaning as in claim 1, with an isothiocyanate of the formula ##STR28## in which R 1 has the same meaning as in claim 1.
Claim 7
Dependent Claim
35 words
The method according to claim 5 wherein the reaction takes place below, at or above room temperature up to a temperature of 100° C. until the complete reaction of the isothiocyanate function in formula (6).
Claim 8
Dependent Claim
30 words
The method according to claim 5 wherein the reaction takes place at normal pressure or a superpressure which corresponds to the sum of the partial pressures at the particular temperature.
Claim 9
Dependent Claim
15 words
The method according to claim 6, wherein the temperature is -30° C. to +50° C.
Claim 10
Dependent Claim
41 words
The method according to claim 6 wherein a linear or branched alcohol with 1 to 3 C atomes, acetone or methylethyl ketone is used as solvent in the reaction of the amine of formula (5) with the isothiocyanate of formula (6).
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-08-07 | 1993-02-06 | 1993-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-08-07 | 1997-02-06 | 1997-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-08-07 | 2001-02-06 | 2001-08-08 | $7700.00 | Window Closed / Lapsed |