US4714739A
Expired / Lapsed
US
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Curable silicone semi-interpenetrating polymer networks and methods of making same
Assignee: Evonik Corp
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Filing: 1984-02-06
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Granted: 1987-12-22
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Expires: 2004-02-06
Abstract
Abstract Melt processable pseudointerpenetrating polymer networks (pseudo- or semi-IPNs) of silicones in thermoplastic matrices and methods of producing same are provided by vulcanizing the silicones within the matrices. The silicone component of the network is preferably the reaction product of a polymeric hydride group - containing silicone and a polymer containing at least one unsaturated group, preferably a vinyl group. The polymer containing unsaturated groups may be a silicone polymer also, or may be a non-silicone polymer such as a styrene, butadiene or urethane polymer or copolymer. Depending on certain parameters chain-extended (thermoplastic) or cross-linked (thermosetting) compositions are produced.
Inventors
- 👤 Barry C. Arkles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:18
CPC Classifications
C; C08; C08L; C08L75/00; C08L75/04; C08G; C08G77/00; C08G77/42; C08L101/00; C08L77/00; C08L83/00; C08L83/04; C08G77/04; C08G77/12; C08G77/70; C08L2205/00; C08L2205/04; C08L23/00; C08L23/02; C08L53/00
Claims Analysis
Total Claims: 31
Claim 1
Independent Claim
85 words
A melt processable composition comprising a polymeric thermoplastic matrix, a hydride group-containing silicone, a non-silicone polymer containing at least one unsaturated group, and a catalyst which will catalyze the reaction of said polymer with said hydride group-containing silicone, said silicone and said polymer being selected and present in sufficient amounts to react with each other by vulcanization within said polymeric thermoplastic matrix to form a silicone semi-interpenetrating polymer network, said vulcanization of said silicone and said polymer being initiated during thermoplastic melt-processing of said composition.
Claim 2
Dependent Claim
85 words
A melt processable composition comprising a polymeric thermoplastic matrix, a hydride group-containing silicone, a non-silicone polymer containing at least one unsaturated group, and a catalyst which will catalyze the reaction of said polymer with said hydride group-containing silicone, said silicone and said polymer being selected and present in sufficient amounts to react with each other by vulcanization within said polymeric thermoplastic matrix to form a silicone semi-interpenetrating polymer network, said vulcanization of said silicone and said polymer being initiated during thermoplastic melt-processing of said composition.
Claim 3
Dependent Claim
29 words
A composition according to claim 1 wherein said silicone ranges from between about 1 weight percent and about 60 weight percent based on the total weight of the composition.
Claim 4
Dependent Claim
37 words
A composition according to claim 1 wherein said thermoplastic matrix is selected from the group consisting of polyamides, thermoplastic polyurethanes, bisphenol A polycarbonates, styrene-ethylene-butylene-styrene block copolymers, polyacetals, polyolefins, styrene-butadiene copolymers, polyolefin elastomers, and polyamide-polyether elastomer base resins.
Claim 5
Dependent Claim
14 words
A composition according to claim 1 wherein said unsaturated group comprises a vinyl group.
Claim 6
Dependent Claim
58 words
A composition according to claim 4 forming a predominantly chain-extended structure wherein said vinyl-containing polymer contains from about two to about four vinyl groups and wherein said hydride-containing silicone contains 1 to 2 times the equivalent of said vinyl-containing polymer with the ratio of said hydride groups to said vinyl groups being between about 1.2:1 and about 6:1.
Claim 7
Dependent Claim
17 words
A composition according to claim 4 wherein the vinyl-containing polymer has two vinyl groups in terminal positions.
Claim 8
Dependent Claim
58 words
A composition according to claim 4 forming a predominantly cross-linked structure wherein said vinyl-containing polymer contains from about two to about thirty vinyl groups and said hydride-containing silicone contains from two to ten times the equivalent of said vinyl-containing polymer with the ratio of the hydride groups to the vinyl groups being between about 1.2:1 and about 6:1.
Claim 9
Dependent Claim
29 words
A composition according to claim 1 wherein said silicone further comprises constituents selected from the group consisting of methyl groups, phenyl groups, longer chain alkyl groups or cyanopropyl groups.
Claim 10
Dependent Claim
19 words
A melt-processable composition according to claim 1 wherein said thermoplastic melt-processing of said composition within said matrix comprises melt-mixing.
Claim 11
Dependent Claim
28 words
A composition according to claim 4 wherein the vinyl group is on a vinyl polymer selected from the group consisting of styrene, butadiene and/or urethane polymers and copolymers.
Claim 12
Dependent Claim
25 words
A composition according to claim 10 wherein the vinyl group is on a butadiene copolymer or polymer containing a significant proportion of poly 1,2-butadiene units.
Claim 13
Dependent Claim
17 words
A composition according to claim 4 wherein the vinyl group is on a triethoxysilyl modified poly 1,2-butadiene.
Claim 14
Independent Claim
52 words
A method for producing a silicone semi-interpenetrating polymer network comprising vulcanizing a silicone component by the reaction of a polymeric silicone containing hydride groups and a non-silicone polymer containing at least one unsaturated group within a polymeric thermoplastic matrix at least partially during thermoplastic melt-processing of said silicone component and said matrix.
Claim 15
Independent Claim
52 words
A method for producing a silicone semi-interpenetrating polymer network comprising vulcanizing a silicone component by the reaction of a polymeric silicone containing hydride groups and a non-silicone polymer containing at least one unsaturated group within a polymeric thermoplastic matrix at least partially during thermoplastic melt-processing of said silicone component and said matrix.
Claim 16
Dependent Claim
17 words
A method according to claim 13 wherein said reaction is conducted in the presence of a catalyst.
Claim 17
Dependent Claim
14 words
A method according to claim 13 wherein said unsaturated group is a vinyl group.
Claim 18
Dependent Claim
13 words
A method according to claim 14 wherein said catalyst comprises a platinum complex.
Claim 19
Dependent Claim
38 words
A method according to claim 13 wherein said thermoplastic matrix is selected from the group consisting of polyamides, thermoplastic polyurethanes, bisphenol A polycarbonates, styrene-ethylene-butylene-styrene block copolymers, styrene butadiene copolymers, polyolefins, polyacetals, polyolefin elastomers, and polyamide-polyether elastomer base resins.
Claim 20
Dependent Claim
74 words
A method according to claim 13 wherein a predominantly chain-extended structure is formed by combining a hydride-containing silicone and a vinyl-containing polymer with the vinyl-containing polymer having from about two to about four vinyl groups and the hydride-containing silicone containing 1 to 2 times the equivalent of the vinyl functionality with the ratio of the hydride groups to the vinyl groups being about 1.2:1 to 6:1, adding a catalyst and melt-processing the resultant mixture.
Claim 21
Dependent Claim
11 words
A method according to claim 18 wherein said melt-processing comprises extrusion.
Claim 22
Dependent Claim
13 words
A method according to claim 18 wherein said melt-processing is followed by pelletizing.
Claim 23
Dependent Claim
17 words
A method according to claim 13 further comprising conducting the reaction in the presence of fumed silica.
Claim 24
Dependent Claim
17 words
A method according to claim 16 further comprising conducting the reaction in the presence of vinyl siloxane.
Claim 25
Dependent Claim
50 words
A method according to claim 15 wherein a predominantly cross-linked structure is formed by separately extruding the vinyl-containing polymer and hydride-containing silicone into separate portions of said thermoplastic matrix, mixing the portions, adding a catalyst and melting the portions together so as to react the vinyl-containing polymer and hydride-containing silicone.
Claim 26
Dependent Claim
42 words
A method according to claim 15 wherein a predominantly cross-linked structure is formed by extruding together the vinyl-containing polymer and hydride-containing silicone into said thermoplastic matrix in the presence of a platinum catalyst and a fugitive inhibitor and melt-processing the resultant mixture.
Claim 27
Dependent Claim
51 words
A method according to claim 23 wherein the vinyl-containing polymer contains from about two to about thirty vinyl groups and the hydride-containing silicone contains from two to ten times the equivalent of the vinyl functionality with the ratio of the hydride groups to the vinyl groups being about 1.2:1 to 6:1.
Claim 28
Dependent Claim
28 words
A method according to claim 15 wherein the vinyl group is on a vinyl polymer selected from the group consisting of styrene, butadiene and/or urethane polymers and copolymers.
Claim 29
Dependent Claim
25 words
A method according to claim 26 wherein the vinyl group is on a butadiene copolymer or polymer containing a significant proportion of poly 1,2-butadiene units.
Claim 30
Dependent Claim
17 words
A method according to claim 15 wherein the vinyl group is on a triethoxysilyl modified poly 1,2-butadiene.
Claim 31
Dependent Claim
27 words
A method according to claim 13 wherein said thermoplastic melt-processing of said silicone component and said matrix comprises themoplastic melt-mixing of said silicone component with said matrix.
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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) | 1990-12-21 | 1991-06-22 | 1991-12-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-12-21 | 1995-06-22 | 1995-12-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-12-21 | 1999-06-22 | 1999-12-22 | $7700.00 | Window Closed / Lapsed |