US4667046A
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Method for preparing organopolysilanes and their uses
Assignee: Wacker Chemie AG
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Filing: 1986-09-02
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Granted: 1987-05-19
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Expires: 2006-09-02
Abstract
Abstract Organopolysilanes are prepared by reacting at least one disilane of the formula R.sub.2 R.sup.1 Si.sub.2 (OCH.sub.3).sub.3, which may optionally be mixed with a compound of the formula R.sub.2 Si.sub.2 (OCH.sub.3).sub.4, with at least one compound of the formula R.sub.2 R.sup.2 SiH in the presence of at least one compound of the formula MOR, where R represents the same or different monovalent alkyl, alkenyl or aryl groups, R 1 represents the same or different monovalent alkyl groups, R 2 represents a methoxy group or R and M represents an alkali metal. These organopolysilanes are preferably used in preparing silicon carbide and in preparing negative photo-resist coatings.
Inventors
- 👤 Volker Frey
- 👤 Bernd Pachaly
- 👤 Norbert Zeller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:51
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/004; G03F7/075; G03F7/0754; C; C01; C01B; C01B32/00; C01B32/90; C01B32/914; C01B32/956; C01B32/963; C01B32/977; C04; C04B; C04B35/00; C04B35/515; C04B35/56; C04B35/565; C04B35/571; C08; C08G; C08G77/00; C08G77/60; C01P; C01P2002/00; C01P2002/80; C01P2002/82; C01P2002/84; C01P2004/00; C01P2004/50; C01P2006/00; C01P2006/60
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
88 words
A method for preparing an organopolysilane, which comprises reacting at least one disilane of the formula R.sub.2 R.sup.1 Si.sub.2 (OCH.sub.3).sub.3 with at least one compound of the formula R.sub.2 R.sup.2 SiH in the presence of at least one compound of the formula MOR where R is a monovalent hydrocarbon radical selected from the group consisting of an alkyl, alkenyl and aryl radical, R 1 is an alkyl radical, R 2 is selected from the group consisting of a methoxy radical and R, and M is an alkali metal.
Claim 2
Independent Claim
88 words
A method for preparing an organopolysilane, which comprises reacting at least one disilane of the formula R.sub.2 R.sup.1 Si.sub.2 (OCH.sub.3).sub.3 with at least one compound of the formula R.sub.2 R.sup.2 SiH in the presence of at least one compound of the formula MOR where R is a monovalent hydrocarbon radical selected from the group consisting of an alkyl, alkenyl and aryl radical, R 1 is an alkyl radical, R 2 is selected from the group consisting of a methoxy radical and R, and M is an alkali metal.
Claim 3
Dependent Claim
80 words
The method of claim 1, wherein a mixture containing a disilane of the formula R.sub.2 R.sup.1 Si.sub.2 (OCH.sub.3)3 and a disilane of the formula R.sub.2 Si.sub.2 (OCH.sub.3).sub.4 is reacted with at least one compound of the formula R.sub.2 R.sup.2 SiH, where R is a monovalent hydrocarbon radical selected from the group consisting of an alkyl, alkenyl and aryl radical, R 1 is an alkyl radical and R 2 is selected from the group consisting of a methoxy radical and R.
Claim 4
Dependent Claim
21 words
The method of claim 1, wherein the reaction is conducted at a temperature of from about 25 to about 220° C.
Claim 5
Dependent Claim
21 words
The method of claim 2, wherein the reaction is conducted at a temperature of from about 25 to about 220° C.
References Cited (Backward Citations)
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