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US5070116A
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Preceramic organosilicon-metal carbonyl polymers
Assignee: Massachusetts Institute of Technology
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Filing: 1991-02-07
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Granted: 1991-12-03
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Expires: 2011-02-07
Abstract
Abstract Organosilicon-metal polymers are prepared by mixing an organosilicon polymer containing a multiplicity of Si-H and/or Si-Si functional groups with a sufficient quantity of a metal carbonyl for the metal carbonyl to be incorporated into the organosilicon polymer. These polymers can be used to prepare ceramics.
Inventors
- 👤 Dietmar Seyferth
- 👤 Christine A. Sobon
- 👤 Jutta Borm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 18:27
CPC Classifications
C; C04; C04B; C04B41/00; C04B41/009; C04B35/00; C04B35/515; C04B35/56; C04B35/565; C04B35/571; C04B35/622; C04B35/626; C04B35/63; C04B35/632; C04B35/6325; C04B35/71; C04B35/78; C04B35/80; C04B41/45; C04B41/4505; C04B41/455; C04B41/4554; C04B41/80; C04B41/81; C08; C08G; C08G77/00; C08G77/04; C08G77/38; C08G77/382; C08G77/398; C08G77/48; C08G77/58; C08G77/60; C08G77/62; C04B2235/00; C04B2235/02; C04B2235/30; C04B2235/32; C04B2235/3231; C04B2235/3232; C04B2235/3239; C04B2235/3241; C04B2235/3244; C04B2235/3251; C04B2235/3256; C04B2235/3258; C04B2235/327; C04B2235/3272; C04B2235/3275; C04B2235/3279; C04B2235/3289
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
69 words
An organosilicon-metal polymer prepared by a method comprising: (a) mixing a polycarbosilane polymer containing a multiplicity of Si--H functional groups with a sufficient quantity of a metal carbonyl for said metal carbonyl to be incorporated into the organosilicon polymer, wherein the metal is selected from the Group VIII metals; and (b) allowing the mixture of step (a) to react by initiating an incorporated reaction, thereby forming said organosilicon-metal polymer.
Claim 2
Dependent Claim
69 words
An organosilicon-metal polymer prepared by a method comprising: (a) mixing a polycarbosilane polymer containing a multiplicity of Si--H functional groups with a sufficient quantity of a metal carbonyl for said metal carbonyl to be incorporated into the organosilicon polymer, wherein the metal is selected from the Group VIII metals; and (b) allowing the mixture of step (a) to react by initiating an incorporated reaction, thereby forming said organosilicon-metal polymer.
Claim 3
Dependent Claim
20 words
The organosilicon-metal polymer of claim 1 wherein the mixture is initiated by an incorporation reaction by the use of irradiation.
Claim 4
Dependent Claim
12 words
The organosilicon-metal polymer of claim 2 wherein the irradiation is UV irradiation.
Claim 5
Dependent Claim
107 words
The organosilicon-metal polymer of claim 1, wherein the polycarbosilane polymer having a plurality of Si--H functional groups is a polymer having a plurality of repeat units of the formula: [RSi(H)(A).sub.q ].sub.n ; where R is H, a substituted or unsubstituted lower alkyl group of 1 to about 6 carbon atoms, a substituted or unsubstituted cycloalkyl group of 3 to about 10 carbon atoms or a substituted or unsubstituted lower aryl group of 6 to about 10 carbon atoms, A is R, a difunctional alkylene, a difunctional alkenylene, a difunctional alkynylene or a heteroatom-substituted R, q is 1 or greater, and n is an integer greater than 1.
Claim 6
Dependent Claim
21 words
The organosilicon-metal polymer of claim 4 wherein the sufficient quantity of metal carbonyl used is at least about 0.25 weight percent.
Claim 7
Dependent Claim
21 words
The organosilicon-metal polymer of claim 1 wherein the sufficient quantity of metal carbonyl used is about 2 to 5 weight percent.
Claim 8
Dependent Claim
21 words
The organosilicon-metal polymer of claim 1 wherein the sufficient quantity of metal carbonyl used is 5% of weight percent or more.
Claim 9
Dependent Claim
13 words
The organosilicon-metal polymer of claim 4 wherein R is the lower alkyl group.
Claim 10
Dependent Claim
26 words
The organosilicon-metal polymer of claim 1, wherein the incorporation reaction is initiated by an energy input selected from the group consisting of heat and gamma irradiation.
Claim 11
Dependent Claim
25 words
The organosilicon-metal polymer of claim 4, wherein the polycarbosilane polymer is a polymer having a plurality of repeat units of the formula [CH.sub.3 (H)SiCH.sub.2 ].
Claim 12
Dependent Claim
23 words
The organosilicon-metal polymer of claim 1, wherein the metal is selected from the group consisting of Co, Fe, Ir, Os, Rh and Ru.
Claim 13
Dependent Claim
23 words
The organosilicon-metal polymer of claim 10, wherein the metal is selected from the group consisting of Co, Fe, Ir, Os, Rh and Ru.
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1994-12-02 | 1995-06-03 | 1995-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-12-02 | 1999-06-03 | 1999-12-03 | $3760.00 | Window Closed / Lapsed |
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