US4900779A
Expired / Lapsed
US
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Organosilicon polymers
Assignee: National Starch and Chemical Investment Holding Corp
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Filing: 1987-07-30
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Granted: 1990-02-13
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Expires: 2007-07-30
Abstract
Abstract Novel thermoset and thermoplastic organosilicon polymers, comprised substantially of alternating polycyclic hydrocarbon residues and cyclic polysiloxane or tetrahedral siloxysilane residues linked through carbon-silicon bonds, are disclosed.
Inventors
- 👤 Raymond T. Leibfried
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 03:46
CPC Classifications
C; C08; C08G; C08G77/00; C08G77/48; C08L; C08L83/00; C08L83/14
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
100 words
An organosilicon polymer comprised substantially of alternating polycyclic hydrocarbon residues and cyclic polysiloxane or siloxysilane residues linked through carbon-silicon bonds, said polymer being hydrosilation reaction product of (a) a cyclic polysiloxane or a tetrahedral siloxysilane containing at least two .tbd.SiH groups and (b) a polycyclic polyene having at least two non-aromatic carbon-carbon double bonds in its rings, wherein the ratio of carbon-carbon double bonds in the rings of (b) to .tbd.SiH groups in (a) is in the range of from about 0.5:1 up to about 1.8:1 and at least one of (a) and (b) has more than two reactive sites.
Claim 2
Dependent Claim
100 words
An organosilicon polymer comprised substantially of alternating polycyclic hydrocarbon residues and cyclic polysiloxane or siloxysilane residues linked through carbon-silicon bonds, said polymer being hydrosilation reaction product of (a) a cyclic polysiloxane or a tetrahedral siloxysilane containing at least two .tbd.SiH groups and (b) a polycyclic polyene having at least two non-aromatic carbon-carbon double bonds in its rings, wherein the ratio of carbon-carbon double bonds in the rings of (b) to .tbd.SiH groups in (a) is in the range of from about 0.5:1 up to about 1.8:1 and at least one of (a) and (b) has more than two reactive sites.
Claim 3
Dependent Claim
80 words
The organosilicon polymer of claim 1 wherein the silicon-containing reactant is selected from the class consisting of: ##STR5## wherein R, which can be the same or different, is hydrogen or a substituted or unsubstituted alkyl, alkoxy, aromatic or aryloxy radical, n is an integer from 3 to about 20, and R is hydrogen on at least two of the silicon atoms, and ##STR6## wherein R is as defined above and is hydrogen at least two silicon atoms in the molecule.
Claim 4
Dependent Claim
18 words
The organosilicon polymer of claim 2 wherein the polycyclic hydrocarbon residue is divalent saturated residue based on norbornadiene.
Claim 5
Dependent Claim
19 words
The organosilicon polymer of claim 2 wherein the polycyclic hydrocarbon residue is a saturated divalent residue based on dicyclopentadiene.
Claim 6
Dependent Claim
25 words
The organosilicon polymer of claim 2 wherein the polycyclic polyene is selected from the class consisting of norbornadiene, dicyclopentadiene, tricyclopentadiene, hexahydronaphthalene, dimethanohexahydronaphthalene and norbornadiene dimer.
Claim 7
Dependent Claim
26 words
The organosilicon polymer of claim 2 wherein the silicon containing residue is a polyvalent residue based on a cyclic polysiloxane or a mixture of cyclic polysiloxanes.
Claim 8
Dependent Claim
25 words
The organosilicon polymer of claim 2 wherein the silicon-containing residue is a polyvalent residue based on a tetrahedral siloxysilane or a mixture of tetrahedral siloxysilanes.
Claim 9
Dependent Claim
42 words
The organosilicon polymer of claim 2 wherein the polymer is a thermoplastic polymer and the ratio of carbon-carbon double bonds in the rings of (b) to .tbd.SiH groups in (a) is in the range of from about 0.5:1 up to about 0.7:1.
Claim 10
Dependent Claim
42 words
The organosilicon polymer of claim 2 wherein the polymer is a thermoplastic polymer and the ratio of carbon-carbon double bonds in the rings of (b) to .tbd.SiH groups in (a) is in the range of from about 1.3:1 up to about 1.8:1.
Claim 11
Dependent Claim
99 words
A crosslinked, thermoset organosilicon polymer comprised substantially of alternating polycyclic hydrocarbon residues and cyclic polysiloxane or siloxysilane structure, said polymer being the hydrosilation reaction product of (a) a cyclic polysiloxane or a tetrahedral siloxysilane containing at least two .tbd.SiH groups and (b) a polycyclic polyene having at least two non-aromatic carbon-carbon double bonds in its rings, wherein the ratio of carbon-carbon double bonds in the rings of (b) to .tbd.SiH groups in (a) is in the range of from about 0.7:1 up to about 1.3:1 and at least one of (a) and (b) has more than two reactive sites.
Claim 12
Dependent Claim
99 words
A crosslinked, thermoset organosilicon polymer comprised substantially of alternating polycyclic hydrocarbon residues and cyclic polysiloxane or siloxysilane structure, said polymer being the hydrosilation reaction product of (a) a cyclic polysiloxane or a tetrahedral siloxysilane containing at least two .tbd.SiH groups and (b) a polycyclic polyene having at least two non-aromatic carbon-carbon double bonds in its rings, wherein the ratio of carbon-carbon double bonds in the rings of (b) to .tbd.SiH groups in (a) is in the range of from about 0.7:1 up to about 1.3:1 and at least one of (a) and (b) has more than two reactive sites.
Claim 13
Dependent Claim
82 words
The crosslinked, thermoset organosilicon polymer of claim 10 wherein the silicon-containing reactant is selected from the class consisting of: ##STR7## wherein R, which can be the same or different, is hydrogen or a substituted or unsubstituted alkyl, alkoxy, aromatic or aryloxy radical, n is an integer from 3 to about 20, and R is hydrogen on at least two of the silicon atoms, and ##STR8## wherein R is as defined above and is hydrogen at least two silicon atoms in the molecule.
Claim 14
Dependent Claim
21 words
The crosslinked, thermoset organosilicon polymer of claim 11 wherein the polycyclic hydrocarbon residue is a divalent saturated residue based on norbornadiene.
Claim 15
Dependent Claim
21 words
The crosslinked, thermoset organosilicon polymer of claim 11 wherein the polycyclic hydrocarbon residue is a divalent saturated residue based on dicyclopentadiene.
Claim 16
Dependent Claim
37 words
The crosslinked, thermoset organosilicon polymer of claim 11 wherein the ratio of carbon-carbon double bonds in the rings of (b) to .tbd.SiH groups in (a) is in the range of from about 0.8:1 up to about 1.1:1.
Claim 17
Dependent Claim
20 words
A fiber reinforced composite structure comprising the organosilicon polymer of claim 2 and up to 80%, by weight, fibrous reinforcement.
Claim 18
Dependent Claim
27 words
The fiber reinforced composite structure of claim 15 wherein the fibrous reinforcement is selected from the group consisting of glass, carbon, metallic, ceramic, and synthetic polymer fibers.
Claim 19
Dependent Claim
18 words
The fiber reinforced composite of claim 15 wherein the fibrous reinforcement is a glass or carbon fiber mat.
References Cited (Backward Citations)
US2665287A
Cited
US2823218A
Cited
US3125554A
Cited
US3197432A
Cited
US3197433A
Cited
US3220972A
Cited
US3375236A
Cited
US3271362A
Cited
US3438936A
Cited
US3686254A
Cited
US3838115A
Cited
US3929850A
Cited
US3920714A
Cited
GB1439945A
Cited
US4011247A
Cited
SU767112A1
Cited
US4234713A
Cited
US4599440A
Cited
US4657965A
Cited
US4728687A
Cited
EP0204171A1
Cited
US4719273A
Cited
US4639501A
Cited
FR2595363A1
Cited
FR2595364A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1993-02-12 | 1993-08-14 | 1994-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-02-12 | 1997-08-14 | 1998-02-13 | $3760.00 | Window Closed / Lapsed |
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