US4138369A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure sensitive conductor and method of manufacturing the same
Assignee: JSR Corp
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Filing: 1977-09-26
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Granted: 1979-02-06
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Expires: 1997-09-26
Abstract
Abstract A pressure sensitive conductor which is made by mixing a silicone rubber, electrically conductive metal particles, and at least one compound selected from the group consisting of monoalkyl, dialkyl, and trialkyl titanate compounds, molding, and curing the same. Where a monoalkyl titanate compound is used, filler-containing silicone rubber may preferably be used.
Inventors
- 👤 Kozo Arai
- 👤 Shiomi Fukui
- 👤 Masaki Nagata
- 👤 Teizo Kotani
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:54
CPC Classifications
H; H01; H01C; H01C10/00; H01C10/10; H01C10/106; C; C08; C08K; C08K3/00; C08K3/02; C08K3/08; C08K5/00; C08K5/0091; C08K5/04; C08K5/05; H01B; H01B1/00; H01B1/20; H01B1/22
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
61 words
A pressure sensitive conductor containing from 62 to 91.9% by volume of a molded, cured silicone rubber; from 8 to 35% by volume of electrically conductive metal particles; and from 0.1 to 3% by volume of an alkyl titanate compound selected from the group consisting of monoalkyl, dialkyl, and trialkyl titanate compounds, an alkyl group containing up to four carbon atoms.
Claim 2
Dependent Claim
61 words
A pressure sensitive conductor containing from 62 to 91.9% by volume of a molded, cured silicone rubber; from 8 to 35% by volume of electrically conductive metal particles; and from 0.1 to 3% by volume of an alkyl titanate compound selected from the group consisting of monoalkyl, dialkyl, and trialkyl titanate compounds, an alkyl group containing up to four carbon atoms.
Claim 3
Dependent Claim
21 words
A pressure sensitive conductor according to claim 1 containing a dialkyl titanate compound, a trialkyl titanate compound, or a mixture thereof.
Claim 4
Dependent Claim
68 words
A pressure sensitive conductor according to claim 2 wherein the dialkyl and trialkyl titanate compounds are represented by the formula (RO).sub.n Ti(OR.sup.3).sub.4-n where n is 2 or 3, R is an alkyl group having from one to four carbon atoms, and R 3 is a triethanolamine residue, acryloyl or methacryloyl group, or an acyl, aroyl or alkylbenzenesulfonyl group, an alkyl group having from six to 20 carbon atoms.
Claim 5
Dependent Claim
54 words
A pressure sensitive conductor according to claim 2 wherein the dialkyl titanate compound is at least one compound selected from the group consisting of bis(triethanolamine)diisopropyl titanate, bis(triethanolamine)dibutyl titanate, bis(triethanolamine)diethyl titanate, bis(triethanolamine)dimethyl titanate, diisopropyl dilauryl titanate, diisopropyl laurylmyristyl titanate, diisopropyl distearoyl titanate, diisopropyl stearoylmethacryloyl titanate, diisopropyl diacryloyl titanate, diisopropyl didodecylbenzenesulfonyl titanate, and diisopropyl isostearoyl-4-aminobenzoyl titanate.
Claim 6
Dependent Claim
43 words
A pressure sensitive conductor according to claim 2 wherein said trialkyl titanate compound is at least one compound selected from the group consisting of triisopropyl acryloyl titanate, triethyl methacryloyl titanate, triisopropyl myristyl titanate, tributyl dodecylbenzenesulfonyl titanate, triisopropyl stearoyl titanate, and triisopropyl isostearoyl titanate.
Claim 7
Dependent Claim
33 words
A pressure sensitive conductor according to claim 2 wherein said dialkyl titanate compound is at least one compound selected from the group consisting of bis-(triethanolamine)diisopropyl titanate, diisopropyl dilauryl titanate, and diisopropyl diacryloyl titanate.
Claim 8
Dependent Claim
34 words
A pressure sensitive conductor according to claim 2 wherein said trialkyl titanate compound is at least one compound selected from the group consisting of triisopropyl stearoyl titanate, triethyl methacryloyl titanate, and tributyl dodecylbenzenesulfonyl titanate.
Claim 9
Dependent Claim
15 words
A pressure sensitive conductor according to claim 1 wherein said silicone rubber contains a filler.
Claim 10
Dependent Claim
44 words
A pressure sensitive conductor according to claim 8 wherein said filler is at least one member selected from the group consisting of colloid silica, silica aerogel, kaolin, mica, talc, wollastonite, calcium silicate, aluminum silicate, chalk, calcium carbonate, magnesium carbonate, iron oxide, alumina, and clay.
Claim 11
Dependent Claim
33 words
A pressure sensitive conductor according to claim 8 wherein said filler is at least one member selected from the group consisting of colloid silica, silica aerogel, alumina, aluminum silicate, calcium carbonate, and kaolin.
Claim 12
Dependent Claim
27 words
A pressure sensitive conductor according to claim 8 wherein the filler is used in amount of up to about 45% on the basis of the rubber volume.
Claim 13
Dependent Claim
32 words
A pressure sensitive conductor according to claim 1 wherein the silicone rubber contains at least one additive selected from the group consisting of pigment, coloring agent, stabilizer, foaming agent and silicone oil.
Claim 14
Dependent Claim
13 words
A pressure sensitive conductor according to claim 1 containing a monoalkyl titanate compound.
Claim 15
Dependent Claim
89 words
A pressure sensitive conductor according to claim 1 wherein said monoalkyl titanate compound contains a filler and are represented by the formula ##STR3## (RO)Ti(O--R 2 ) 3 , or (RO)Ti(OX--R 2 ) 3 where R is an alkyl group having from one to four carbon atoms; R 1 is a vinyl group, α-alkyl-substituted vinyl group, or an alkyl, aralkyl, or allyl group having from six to 20 carbon atoms, R 2 is an alkyl, aralkyl, or allyl group having from six to 20 carbon atoms; and X is ##STR4##
Claim 16
Dependent Claim
66 words
A pressure sensitive conductor according to claim 14 wherein said monoalkyl titanate compound is at least one compound selected from the group consisting of isopropyl triisostearoyl titanate, isopropyl trilauryl titanate, isopropyl trimyristyl titanate, isopropyl dimethacryloyl isostearoyl titanate, isopropyl tri(dodecylbenzenesulfonyl) titanate, isopropyl isostearoyl diacryloyl titanate, isopropyl tri(diisooctylphosphate) titanate, isopropyl trimethacryloyl titanate, isopropyl tri(dioctylpyrophosphate) titanate, isopropyl triacroyl titanate, isopropyl tri(dioctylphosphite) titanate, butyl triisostearoyl titanate, and ethyl triisostearoyl titanate.
Claim 17
Dependent Claim
27 words
A pressure sensitive conductor according to claim 14 containing up to about 45% by volume of filler on the basis of the volume of said silicone rubber.
Claim 18
Dependent Claim
32 words
A pressure sensitive conductor according to claim 1 wherein the electrically conductive metal particles are particles of silver, copper, cobalt, nickel, brass, iron, chromium, titanium, platinum, gold, aluminum, zinc or their alloys.
Claim 19
Dependent Claim
27 words
A pressure sensitive conductor according to claim 1 wherein the electrically conductive metal particles are particles of silver, copper, nickel, cobalt, chromium, brass, iron, or their alloys.
Claim 20
Dependent Claim
23 words
A pressure sensitive conductor according to claim 1 wherein the electrically conductive metal particles are particles of cobalt, nickel, iron or their alloys.
Claim 21
Dependent Claim
26 words
A pressure sensitive conductor according to claim 1 wherein a size of the electrically conductive metal particles is within the range of between 0.1 and 200μ.
Claim 22
Dependent Claim
25 words
A pressure sensitive conductor according to claim 1 wherein a size of electrically conductive metal particles is within the range of between 1 and 150μ.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-02-05 | 1982-08-07 | 1983-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-02-05 | 1986-08-07 | 1987-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-02-05 | 1990-08-07 | 1991-02-06 | $7700.00 | Window Closed / Lapsed |