US4033905A
Expired / Lapsed
US
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Method for increasing the conductivity of electrically resistive organic materials
Assignee: RCA Corp
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Filing: 1975-11-05
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Granted: 1977-07-05
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Expires: 1995-11-05
Abstract
Abstract Electrically resistive organic materials, e.g. silicone rubber, thermoplastic resins, and liquid crystals, are made more electrically conductive by the addition of an effective amount of a compound of the formula: <IMAGE> wherein R1 is selected from the group consisting of hydrogen, alkyl, and phenyl-substituted alkyl; R2 is alkyl with 8 - 20 carbon atoms; and Z is selected from the group consisting of phenyl and alkyl-substituted phenyl. The invention is particularly applicable to silicone rubber light valves and liquid crystals.
Inventors
- 👤 Allen Bloom
- 👤 Daniel Louis Ross
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:45
CPC Classifications
H; H01; H01B; H01B1/00; H01B1/06; H01B1/12; H01B1/122
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
88 words
A method for increasing the conductivity of resistive organic material selected from the group consisting of silicone rubber, polyester thermoplastic resin and liquid crystals, which comprises adding to said organic material a resistivity-lowering compound of the formula: ##STR3## wherein R 1 is selected from the group consisting of hydrogen, C 1 C 4 alkyl, and phenyl-substituted C 1 -C 4 alkyl R 2 is an alkyl group having 8-20 carbon atoms; and Z is selected from the group consisting of phenyl, and C 1 -C 4 alkyl-substituted phenyl.
Claim 2
Independent Claim
88 words
A method for increasing the conductivity of resistive organic material selected from the group consisting of silicone rubber, polyester thermoplastic resin and liquid crystals, which comprises adding to said organic material a resistivity-lowering compound of the formula: ##STR3## wherein R 1 is selected from the group consisting of hydrogen, C 1 C 4 alkyl, and phenyl-substituted C 1 -C 4 alkyl R 2 is an alkyl group having 8-20 carbon atoms; and Z is selected from the group consisting of phenyl, and C 1 -C 4 alkyl-substituted phenyl.
Claim 3
Dependent Claim
9 words
The method of claim 1, wherein Z is phenyl.
Claim 4
Dependent Claim
13 words
The method of claim 1, wherein said organic material is a silicone rubber.
Claim 5
Dependent Claim
13 words
The method of claim 1, wherein said organic material is a thermoplastic resin.
Claim 6
Dependent Claim
14 words
The method of claim 1, wherein said organic material is a liquid crystal composition.
Claim 7
Dependent Claim
23 words
A silicone rubber, having a resistivity below about 10 14 ohm-cm, containing an effective amount of a resistivity lowering compound of claim 1.
Claim 8
Dependent Claim
23 words
A thermoplastic resin, having a resistivity below about 10 15 ohm-cm, containing an effective amount of a resistivity lowering compound of claim 1.
Claim 9
Dependent Claim
23 words
A liquid crystal composition, having a resistivity below 10 10 ohm-cm, containing an effective amount of a resistivity lowering compound of claim 1.
Claim 10
Independent Claim
81 words
A method for increasing the conductivity of resistive organic material selected from the group consisting of silicon rubber and thermoplastic resins which comprises adding to said organic material an effective amount of a resistivity-lowering compound of the formula ##STR4## wherein R 1 is hydrogen, alkyl phenyl substituted alkyl wherein the alkyl group has 1-4 carbon atoms, R 2 is an alkyl group of 8-20 carbon atoms and Z is phenyl or alkyl-substituted phenyl wherein the alkyl group has 1-4 carbon atoms.
Claim 11
Independent Claim
81 words
A method for increasing the conductivity of resistive organic material selected from the group consisting of silicon rubber and thermoplastic resins which comprises adding to said organic material an effective amount of a resistivity-lowering compound of the formula ##STR4## wherein R 1 is hydrogen, alkyl phenyl substituted alkyl wherein the alkyl group has 1-4 carbon atoms, R 2 is an alkyl group of 8-20 carbon atoms and Z is phenyl or alkyl-substituted phenyl wherein the alkyl group has 1-4 carbon atoms.
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) | 1980-07-04 | 1981-01-03 | 1981-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-07-04 | 1985-01-03 | 1985-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-07-04 | 1989-01-03 | 1989-07-05 | $7700.00 | Window Closed / Lapsed |