US4900779A — Organosilicon polymers

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.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
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
11.5 Years (Year 12)	2001-02-12	2001-08-14	2002-02-13	$7700.00	Window Closed / Lapsed

Organosilicon polymers

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