EP0303360A1
Expired / Lapsed
EP
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Electroconductive polymers
Assignee: Vesuvius Holdings Ltd
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Filing: 1988-07-15
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Granted: —
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Expires: 2008-07-15
Abstract
Abstract Substituted polyaniline derivatives which comprise repeating units of the general formula: where R and R are certain specified substituent groups, and counterions of the formula X, where X is, for example CI-, Br - , arylsulphonate etc. The substituted polyanilines are electroconductive.
Inventors
- 👤 Poopathy Kathirgamanathan
- 👤 Kieren Quill
- 👤 Alan Edward Underhill
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-01 08:16
CPC Classifications
H; H01; H01B; H01B1/00; H01B1/06; H01B1/12; H01B1/122; C; C08; C08G; C08G61/00; C08G61/12; C08G61/122; C08G61/123; C08K; C08K9/00; C08K9/08; C09; C09D; C09D179/00; C09D179/02; H01B1/124; H01B1/127; H01B1/128
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
132 words
A substituted polyaniline derivative which comprises repeating units of the general formula: where R is in the ortho- or meta-position and is -(CH 2 ) m O(CHR"CH 2 ) n OR''' where m is 0 or an integer of from 1 to 6, n is an integer of from 1 to 6, R is a hydrogen atom or a methyl group and R" is an alkyl group containing from 1 to 6 carbon atoms, or the group where p is 0 or an integer of from 1 to 6, R is hydrogen, C, - 6 alkyl or aryl, and counterions of the formula X, where X is Cl-, Br-, , , , , , arylsulphonate, arenedicarboxylate, arenecarboxylate, polystyrene sulphonate, polyacrylate, alkylsulphonate, vinylsulphonate, vinylbenzene sulphonate, cellulose sulphonate, cellulose sulphate or a perfluorinated polyanion.
Claim 2
Dependent Claim
132 words
A substituted polyaniline derivative which comprises repeating units of the general formula: where R is in the ortho- or meta-position and is -(CH 2 ) m O(CHR"CH 2 ) n OR''' where m is 0 or an integer of from 1 to 6, n is an integer of from 1 to 6, R is a hydrogen atom or a methyl group and R" is an alkyl group containing from 1 to 6 carbon atoms, or the group where p is 0 or an integer of from 1 to 6, R is hydrogen, C, - 6 alkyl or aryl, and counterions of the formula X, where X is Cl-, Br-, , , , , , arylsulphonate, arenedicarboxylate, arenecarboxylate, polystyrene sulphonate, polyacrylate, alkylsulphonate, vinylsulphonate, vinylbenzene sulphonate, cellulose sulphonate, cellulose sulphate or a perfluorinated polyanion.
Claim 3
Dependent Claim
18 words
A substituted aniline derivative as claimed in claim 1 which is selected from the following: RePeating Unit Counterion
Claim 4
Dependent Claim
17 words
A blend of a polymer with a polyaniline derivative as claimed in claim 1 or claim 2.
Claim 5
Dependent Claim
22 words
A blend as claimed in claim 3 wherein the polymer is poly(vinyl chloride), polyethylene, polypropylene, polystyrene, nylon, poly(ethylene terephthalate) or poly(ethylene oxide).
Claim 6
Dependent Claim
33 words
A blend as claimed in claim 3 or claim 4 which comprises from 5 to 70% by weight of the polyaniline derivative and from 95 to 30% by weight of the other polymer.
Claim 7
Dependent Claim
85 words
A process for the preparation of a polyaniline derivative as claimed in claim 1, which process comprises oxidising an aniline monomer of the formula: where R and R are as defined in claim 1 with an oxidant having a higher oxidation potential than the aniline, the reaction either being carried out in the presence of an acid HX were X is as defined in claim 1, or with the sequential addition of an acid HX to the oxidised monomer, in order to provide the counterions.
Claim 8
Dependent Claim
20 words
A process as claimed in claim 6 wherein the oxidant is ammonium persulphate, potassium dichromate, hydrogen peroxide or sodium chlorate.
Claim 9
Dependent Claim
36 words
A process as claimed in claim 6 or claim 7 wherein the oxidation is carried out at a temperature of below 40 °C, preferably at a temperature in the range of from 0 to 40 C.
Claim 10
Dependent Claim
33 words
A process as claimed in any one of claims 6 to 8 wherein the concentration of oxidant is in the range of from 0.5 to 3 times the concentration of the aniline monomer.
Claim 11
Dependent Claim
57 words
the use of a polyaniline derivative as claimed in claim 1 or claim 2 as an EMI/RF shielding material, as an antistatic material, in an electrochromic display system, as an ion or pH sensor, as a battery electrode material, as a protective coating for an electrode or as an electrode for the selective deposition of metal ions.
Claim 12
Dependent Claim
24 words
A copolymer of a substituted aniline monomer of the general formula: where R and R are as defined in claim 1, with another monomer.
Claim 13
Dependent Claim
21 words
A copolymer as claimed in claim 11 wherein the monomer is aniline or another substituted aniline as claimed in claim 1.
References Cited (Backward Citations)
EP0208254A2
Cited
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