EP0175383A2
Expired / Lapsed
EP
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Ceramic materials from silazane polymers
Assignee: Dow Silicones Corp
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Filing: 1985-09-20
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Granted: —
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Expires: 2005-09-20
Abstract
Abstract A method is disclosed for increasing the ceramic yield of a ceramic material obtained by firing a R3SiNH-containing silazane polymer to an elevated temperature in an inert atmosphere or in a vacuum. The method involves adding certain metallic compounds to the R3SiNH-containing silazane polymer prior to firing. Metallic compounds which increase the ceramic yield include ruthenium compounds, palladium compounds, silver compounds, indium compounds, iridium compounds, and platinum compounds.
Inventors
- 👤 Ronald Howard Baney
- 👤 Duane Ray Bujalski
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-30 21:23
CPC Classifications
C; C08; C08L; C08L83/00; C08L83/16; C04; C04B; C04B35/00; C04B35/515; C04B35/56; C04B35/565; C04B35/571; C04B35/58; C04B35/584; C04B35/589; C08G; C08G79/00; C08K; C08K3/00; C08K3/10; C08K5/00; C08K5/0008
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
121 words
A method of preparing a ceramic material with increased ceramic yield, said method comprising heating a modified R 3 SiNH-containing silazane polymer in an inert atmosphere or in a vacuum to a temperature of at least 750°C until said modified R 3 SiNH-containing silazane polymer is converted to a ceramic material with increased ceramic yield relative to a non-modified R 3 SiNH-containing silazane polymer heated under the same conditions, said method characterized by having the modified R 3 SiNH-containing silazane polymer prepared by mixing the non-modified R 3 SiNH-containing silazane polymer with an effective, ceramic yield increasing, amount of a metallic compound selected from the group consisting of ruthenium compounds, palladium compounds, silver compounds, indium compounds, iridium compounds, and platinum compounds.
Claim 2
Independent Claim
121 words
A method of preparing a ceramic material with increased ceramic yield, said method comprising heating a modified R 3 SiNH-containing silazane polymer in an inert atmosphere or in a vacuum to a temperature of at least 750°C until said modified R 3 SiNH-containing silazane polymer is converted to a ceramic material with increased ceramic yield relative to a non-modified R 3 SiNH-containing silazane polymer heated under the same conditions, said method characterized by having the modified R 3 SiNH-containing silazane polymer prepared by mixing the non-modified R 3 SiNH-containing silazane polymer with an effective, ceramic yield increasing, amount of a metallic compound selected from the group consisting of ruthenium compounds, palladium compounds, silver compounds, indium compounds, iridium compounds, and platinum compounds.
Claim 3
Dependent Claim
15 words
A method as defined in claim 1 wherein said metallic compound is a ruthenium compound.
Claim 4
Dependent Claim
16 words
A method as defined in claim 2 wherein said ruthenium compound is a ruthenium (III) 2,4-pentanedionate.
Claim 5
Dependent Claim
15 words
A method as defined in claim 1 wherein said metallic compound is a palladium compound.
Claim 6
Dependent Claim
17 words
A method as defined in claim 4 wherein said palladium compound is a palladium (II) 2,4-pentanedionate compound.
Claim 7
Dependent Claim
15 words
A method as defined in claim 1 wherein said metallic compound is a silver compound.
Claim 8
Dependent Claim
17 words
A method as defined in claim 6 wherein said silver compound is silver nitrate or silver 2,4-pentanedionate.
Claim 9
Dependent Claim
15 words
A method as defined in claim 1 wherein said metallic compound is an indium compound.
Claim 10
Dependent Claim
17 words
A method as defined in claim 8 wherein said indium compound is indium 2,4-pentanedionate or indium isopropoxide.
Claim 11
Dependent Claim
15 words
A method as defined in claim 1 wherein said metallic compound is an iridium compound.
Claim 12
Dependent Claim
19 words
A method as defined in claim 10 wherein said iridium compound is bis(triphenylphosphine)iridium chloride, bis(triphenylphosphine)iridium bromide, or bis(triphenylphosphine)iridium iodide.
Claim 13
Dependent Claim
15 words
A method as defined in claim 1 wherein said metallic compound is a platinum compound.
Claim 14
Dependent Claim
14 words
A method as defined in claim 12 wherein said platinum compound is chloroplatinic acid.
References Cited (Backward Citations)
No citation records indexed.
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