Patent EP0493841A2 successfully refreshed from Google Patents.
EP0493841A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Organosilicon polymers and prepolymers comprising a coupling monomer
Assignee: Hercules LLC
•
Filing: 1991-12-30
•
Granted: —
•
Expires: 2011-12-30
Abstract
Abstract Crosslinked or crosslinkable organosilicon polymers and prepolymers comprising either (i) alternating (a) cyclic polysiloxane or tetrahedral siloxysilane residues and (b) polycyclic hydrocarbon residues derived from polycyclic polyenes having at least two non-aromatic, non-conjugated carbon-carbon double bonds in their rings linked through carbon to silicon bonds, wherein at least one of the cyclic polysiloxanes or tetrahedral siloxysilanes (a) or the polycyclic polyenes (b) used to form the polymer or prepolymer has three or more reactive sites; or (ii) a linear poly(organohydrosiloxane) polymer having at least 30% of its ≡SiH groups reacted to hydrocarbon residues derived from polycyclic polyenes having at least two non-aromatic, non-conjugated carbon-carbon double bonds in their rings; characterized in that the polymer or prepolymer further comprises a coupling monomer having at least one carbon-carbon double bond which reacts with SiH during hydrosilation.
Inventors
- 👤 Andrew Benich Woodside
- 👤 Raymond Thomas Leibfried, Sr.
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 17:14
CPC Classifications
C; C08; C08G; C08G77/00; C08G77/48; C08G77/50; C08L; C08L83/00; C08L83/14
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
135 words
A crosslinked or crosslinkable organosilicon polymer or prepolymer comprising either (i) alternating (a) cyclic polysiloxane or tetrahedral siloxysilane residues and (b) polycyclic hydrocarbon residues derived from polycyclic polyenes having at least two non-aromatic, non-conjugated carbon-carbon double bonds in their rings linked through carbon to silicon bonds, wherein at least one of the cyclic polysiloxanes or tetrahedral siloxysilanes (a) or the polycyclic polyenes (b) used to form the polymer or prepolymer has three or more reactive sites; or (ii) a linear poly(organohydrosiloxane) polymer having at least 30% of its ≡SiH groups reacted to hydrocarbon residues derived from polycyclic polyenes having at least two non-aromatic, non-conjugated carbon-carbon double bonds in their rings; characterized in that the polymer or prepolymer further comprises a coupling monomer having at least one carbon-carbon double bond which reacts with ≡SiH during hydrosilation.
Claim 2
Dependent Claim
135 words
The crosslinked or crosslinkable organosilicon polymer or prepolymer of claim 1 wherein the coupling monomer has the general formula: AX(YR) n R' m (I) wherein A is a group containing at least one carbon-carbon double bond reactive in hydrosilation; X is an atom selected from the group consisting of the atom of groups IIIA, IVA, IIIB and IVB of the periodic chart except carbon; Y is selected from the group consisting of nitrogen, oxygen, phosphorous and sulfur; R and R' are independently selected from the group consisting of aliphatic and aromatic groups that do not interfere with hydrosilation and halogens; n is an integer in the range of 1 to 3; m is an integer in the range of 0 to 2; the sum of m and n is less than or equal to 3.
Claim 3
Dependent Claim
82 words
The crosslinked or crosslinkable organosilicon polymer or prepolymer of claim 2 wherein A is a linear or cyclic aliphatic group having 10 or less carbon atoms and one carbon-carbon double bond reactive in hydrosilation; X is selected from the group consisting of B, Al, Si, Ge, Sn, Pb, Ti and Zr; Y is oxygen or sulfur; R is selected from the group consisting of methyl, ethyl, acetyl and chloride; and R' is selected from the group consisting of methyl, ethyl and chloride.
Claim 4
Dependent Claim
39 words
The crosslinked or crosslinkable organosilicon polymer or prepolymer of claim 2 wherein R and R' are independently selected from the group consisting of aliphatic and aromatic groups that do not interfere with hydrosilation and coupling with glass and halogens.
Claim 5
Dependent Claim
39 words
The crosslinked or crosslinkable organosilicon polymer or prepolymer of claim 2 wherein R and R' are independently selected from the group consisting of aliphatic and aromatic groups that do not interfere with hydrosilation and coupling with metal and halogens.
Claim 6
Dependent Claim
39 words
The crosslinked or crosslinkable organosilicon polymer or prepolymer of claim 2 wherein R and R' are independently selected from the group consisting of aliphatic and aromatic groups that do not interfere with hydrosilation and coupling with graphite and halogens.
Claim 7
Dependent Claim
21 words
The crosslinked or crosslinkable organosilicon polymer or prepolymer of any of claims 2-6 wherein n is 3 and m is 0.
Claim 8
Dependent Claim
84 words
A crosslinked organosilicon polymer or crosslinkable organosilicon prepolymer as claimed in any of the preceding claims which is the hydrosilation reaction product of: (a) a polycyclic polyene having at least two non-aromatic, non-conjugated carbon-carbon double bonds in its rings; (b) a cyclic polysiloxane or tetrahedral siloxysilane having at least two ≡SiH groups; and (c) a coupling monomer having at least one carbon-carbon double bond which reacts with ≡SiH during hydrosilation; wherein at least one of (a) or (b) has three or more reactive groups.
Claim 9
Dependent Claim
17 words
The crosslinked organosilicon polymer or crosslinkable organosilicon prepolymer of claim 8 wherein (b) is a cyclic polysiloxane.
Claim 10
Dependent Claim
18 words
The crosslinked or crosslinkable organosilicon polymer or prepolymer of claim 1 wherein the coupling monomer (c) is vinyltrimethoxysilane.
Claim 11
Dependent Claim
18 words
The crosslinked or crosslinkable organosilicon polymer or prepolymer of claim 1 wherein the coupling monomer (c) is vinyltriethoxysilane.
Claim 12
Dependent Claim
42 words
The crosslinked or crosslinkable organosilicon polymer or prepolymer as claimed in any of the preceding claims wherein the ratio of carbon-carbon double bonds in the coupling monomer to ≡SiH groups in the cyclic polysiloxane, tetrahedral siloxysilane or poly(organohydrosiloxane) is 0.09:1 to 0.90:1.
Claim 13
Dependent Claim
41 words
The crosslinked or crosslinkable organosilicon polymer or prepolymer as claimed in any of the preceding claims wherein the ratio of carbon-carbon double bonds in the rings of (a) to ≡SiH groups in (b) is in the range of 0.75:1 to 0.08:1.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.