US4877820A
Expired / Lapsed
US
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Cross-linked organosiloxane polymers
Assignee: National Starch and Chemical Investment Holding Corp
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Filing: 1988-08-04
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Granted: 1989-10-31
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Expires: 2008-08-04
Abstract
Abstract Disclosed are novel, cross-linked or cross-linkable linear poly(organohydrosiloxanes) wherein the cross-linking units are derived from polycyclic polyenes. These polymers or prepolymers are prepared by reacting or partially reacting the poly(organohydrosiloxanes) with the polycyclic polyene in the presence of a catalyst.
Inventors
- 👤 Patrick J. Cowan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:30
CPC Classifications
C; C08; C08G; C08G77/00; C08G77/48; C08G77/50; C08K; C08K5/00; C08K5/01
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
40 words
A cross-linked or hydrosilation cross-linkable linear poly(organohydrosiloxane) polymer having at least 30% of its .tbd.Si--H groups reacted with hydrocarbon residues derived from polycyclic polyenes selected from the group consisting of unsubstituted or substituted cyclopentadiene oligomers, norbornadiene, norbornadiene dimer and dimethanohexahydronaphthalene.
Claim 2
Dependent Claim
40 words
A cross-linked or hydrosilation cross-linkable linear poly(organohydrosiloxane) polymer having at least 30% of its .tbd.Si--H groups reacted with hydrocarbon residues derived from polycyclic polyenes selected from the group consisting of unsubstituted or substituted cyclopentadiene oligomers, norbornadiene, norbornadiene dimer and dimethanohexahydronaphthalene.
Claim 3
Dependent Claim
28 words
A polymer as claimed in claim 1 wherein the polycyclic polyenes are selected from the group consisting of dicyclopentadiene, cyclopentadiene trimer, methyl dicyclopentadiene, norbornadiene, norbornadiene dimer and dimethanohexahydronaphthalene.
Claim 4
Dependent Claim
14 words
A polymer as claimed in claim 2 wherein the poly(organohydrosiloxane) is a trimethylsiloxy-terminated poly(methylhydrosiloxane).
Claim 5
Dependent Claim
53 words
A polymer as claimed in claim 1 wherein the poly(organohydrosiloxane) has the general formula: ##STR4## wherein R is a substituted or unsubstituted, saturated alkyl radical or a substituted or unsubstituted phenyl radical, and about 5% to about 50% of the R's are hydrogen and m is an integer from about 5 to 40.
Claim 6
Dependent Claim
13 words
A polymer as claimed in claim 4 which is a cross-linked, thermoset polymer.
Claim 7
Dependent Claim
25 words
A polymer as claimed in claim 4 wherein the polycylic polyene has chemically distinguishable double bonds and the resultant product is a hydrosilation cross-linkable polymer.
Claim 8
Dependent Claim
11 words
A polymer as claimed in claim 6 which is a liquid.
Claim 9
Dependent Claim
19 words
A polymer as claimed in claim 6 wherein the poly(organohydrosiloxane) has 30 to 60% of its .tbd.Si--H groups reacted.
Claim 10
Dependent Claim
22 words
A polymer as claimed in claim 1 wherein the polycyclic polyenes are selected from the group consisting of dicyclopentadiene and cyclopentadiene trimer.
Claim 11
Dependent Claim
15 words
A polymer as claimed in claim 1 wherein the polycyclic polymers are selected from dicyclopentadiene.
Claim 12
Dependent Claim
15 words
A polymer as claimed in claim 4 wherein the polycyclic polymers are selected from dicyclopentadiene.
Claim 13
Dependent Claim
11 words
A polymer as claimed in claim 8 which is a liquid.
Claim 14
Dependent Claim
14 words
A polymer as claimed in claim 1 wherein the poly(organohydrosiloxane) is a trimethylsiloxy-terminated poly(methylhydrosiloxane).
Claim 15
Dependent Claim
13 words
A polymer as claimed in claim 1 which is a cross-linked, thermoset polymer.
Claim 16
Dependent Claim
24 words
A polymer as claimed in claim 1 wherein the polycyclic polyene has chemically distinguishable double bonds and the resultant product is a cross-linkable polymer.
Claim 17
Dependent Claim
11 words
A polymer as claimed in claim 15 which is a liquid.
Claim 18
Dependent Claim
23 words
A polymer as claimed in claim 15 which is cross-linkable and wherein the poly(organohydrosiloxane) has 30 to 60% of its .tbd.Si--H groups reacted.
Claim 19
Dependent Claim
49 words
A cross-linked or hydrosilation cross-linkable linear poly(organohydrosiloxane) polymer comprising up to 80% fibrous reinforcement, the linear poly(organohydrosiloxane) having at least 30% of its .tbd.Si--H groups reacted with hydrocarbon residues derived from polycyclic polyenes selected from the group consisting of unsubstituted or substituted cyclopentadiene oligomers, norbornadiene, norbornadiene dimer and dimethanohexahydronaphthalene.
Claim 20
Dependent Claim
49 words
A cross-linked or hydrosilation cross-linkable linear poly(organohydrosiloxane) polymer comprising up to 80% fibrous reinforcement, the linear poly(organohydrosiloxane) having at least 30% of its .tbd.Si--H groups reacted with hydrocarbon residues derived from polycyclic polyenes selected from the group consisting of unsubstituted or substituted cyclopentadiene oligomers, norbornadiene, norbornadiene dimer and dimethanohexahydronaphthalene.
Claim 21
Dependent Claim
18 words
A polymer as claimed in claim 18 wherein the fibrous reinforcement is a woven mat of glass fibers.
Claim 22
Dependent Claim
28 words
A polymer as claimed in claim 18 wherein the polycyclic polyenes are selected from the group consisting of dicyclopentadiene, cyclopentadiene trimer, methyl dicyclopentadiene, norbornadiene, norbornadiene dimer and dimethanohexahydronaphthalene.
Claim 23
Dependent Claim
53 words
A polymer as claimed in claim 20 wherein the poly(organohydrosiloxane) has the general formula: ##STR5## wherein R is a substituted or unsubstituted, saturated alkyl radical or a substituted or unsubstituted phenyl radical, and about 5% to about 50% of the R's are hydrogen and m is an integer from about 5 to 40%.
Claim 24
Dependent Claim
13 words
A polymer as claimed in claim 21 which is a cross-linked, thermoset polymer.
Claim 25
Dependent Claim
22 words
A polymer as claimed in claim 21 wherein the polycyclic polyenes are selected from the group consisting of dicyclopentadiene and cyclopentadiene trimer.
Claim 26
Dependent Claim
15 words
A polymer as claimed in claim 21 wherein the polycyclic polyenes are selected from dicyclopentadiene.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-10-30 | 1993-05-01 | 1993-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-10-30 | 1997-05-01 | 1997-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-10-30 | 2001-05-01 | 2001-10-31 | $7700.00 | Window Closed / Lapsed |