US4983690A
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Conductive polymer-maleimide blends and method of producing same
Assignee: Lockheed Martin Corp
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Filing: 1989-03-20
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Granted: 1991-01-08
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Expires: 2009-03-20
Abstract
Abstract Solution blending of (a) a conductive polymer containing carbon-nitrogen linkages, such as polyaniline, having an organic group or an inorganic group, e.g., derived from an anhydride or an aromatic multisulfonic acid, covalently linked to nitrogen atoms of the polymer and (b) a malemide, particularly a bismalemide, e.g., the bismaleimide prepared by reacting 1,3 bis (3 aminophenoxybenzene) with 2 units of maleic anhydride, or a bismaleimide terminated oligomer, in a suitable solvent. On removal of solvent and heating to cure the bismaleimide, a continuous phase blend of the conductive polymer and the bismaleimide is formed, having good electrical conductivity and strength. The solution blend can be applied as a coating on a substrate or can be processed to a powder which can be compressed into parts. The conductive blend can be melted and cured without the evolution of volatiles.
Inventors
- 👤 Randy E. Cameron
- 👤 Abraham L. Landis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:08
CPC Classifications
C; C08; C08L; C08L79/00; C08L79/04; C08L79/08; C08G; C08G73/00; C08G73/06; C08G73/10; C08G73/12; C08G73/121; C08L79/02; H; H01; H01B; H01B1/00; H01B1/06; H01B1/12; H01B1/124; H01B1/128
Claims Analysis
Total Claims: 36
Claim 1
Independent Claim
76 words
The process for producing a conductive polymer blend which comprises: solution blending in a suitable solvent a mixture of (a) a conductive polymer containing carbon-nitrogen linkages selected from the group consisting of conductive polyaniline, its naphthyl and biphenyl derivatives, and alkyl and aryl substituted polyaniline and its alkyl and aryl substituted naphthyl and biphenyl derivatives, and (b) a maleimide, removing said solvent, and forming a conductive continuous phase blend of said conductive polymer and said maleimide.
Claim 2
Dependent Claim
76 words
The process for producing a conductive polymer blend which comprises: solution blending in a suitable solvent a mixture of (a) a conductive polymer containing carbon-nitrogen linkages selected from the group consisting of conductive polyaniline, its naphthyl and biphenyl derivatives, and alkyl and aryl substituted polyaniline and its alkyl and aryl substituted naphthyl and biphenyl derivatives, and (b) a maleimide, removing said solvent, and forming a conductive continuous phase blend of said conductive polymer and said maleimide.
Claim 3
Dependent Claim
22 words
The process of claim 1, said conductive polymer having an organic or inorganic group covalently linked to nitrogen atoms of said polymer.
Claim 4
Dependent Claim
31 words
The process of claim 1, wherein said conductive polymer has an organic group derived from an anhydride or an aromatic multisulfonic acid covalently linked to the nitrogen atoms of said polymer.
Claim 5
Dependent Claim
37 words
The process of claim 1, wherein said conductive polymer is polyaniline and said conductive polyaniline has an organic group derived from an anhydride or an aromatic multisulfonic acid covalently linked to the nitrogen atoms of said polyaniline.
Claim 6
Dependent Claim
16 words
The process of claim 1, wherein said maleimide is a bismaleimide or a bismaleimide terminated oligomer.
Claim 7
Dependent Claim
37 words
The process of claim 4, wherein said maleimide is a bismaleimide terminated oligomer, employing about 1 to about 99% of said conductive polymer and about 1 to about 99% of said maleimide, by weight of the mixture.
Claim 8
Dependent Claim
15 words
The process of claim 1, including heating said continuous phase blend and curing said maleimide.
Claim 9
Dependent Claim
107 words
A process for producing a conductive polymer blend which comprises: reacting a base-type non-conductive polymer containing carbon-nitrogen linkages selected from the group consisting of polyaniline, its naphthyl and biphenyl derivatives, and alkyl and aryl substituted polyaniline and its alkyl and aryl substituted naphthyl and biphenyl derivatives, with a compound capable of converting said non-conductive polymer to a conductive polymer, and forming said conductive polymer having an organic or inorganic group covalently linked to nitrogen atoms of said polymer, solution blending a maleimide with said conductive polymer in a suitable solvent, removing said solvent, and forming a conductive continuous phase blend of said conductive polymer and said maleimide.
Claim 10
Dependent Claim
107 words
A process for producing a conductive polymer blend which comprises: reacting a base-type non-conductive polymer containing carbon-nitrogen linkages selected from the group consisting of polyaniline, its naphthyl and biphenyl derivatives, and alkyl and aryl substituted polyaniline and its alkyl and aryl substituted naphthyl and biphenyl derivatives, with a compound capable of converting said non-conductive polymer to a conductive polymer, and forming said conductive polymer having an organic or inorganic group covalently linked to nitrogen atoms of said polymer, solution blending a maleimide with said conductive polymer in a suitable solvent, removing said solvent, and forming a conductive continuous phase blend of said conductive polymer and said maleimide.
Claim 11
Dependent Claim
24 words
The process of claim 8, wherein said reaction to form said conductive polymer is carried out in situ during solution blending with said maleimide.
Claim 12
Dependent Claim
16 words
The process of claim 8, wherein said maleimide is a bismaleimide or a bismaleimide terminated oligomer.
Claim 13
Dependent Claim
28 words
The process of claim 8, wherein said compound is a carbonyl anhydride or a sulfonyl anhydride, and forming anhydride groups covalently linked to nitrogen atoms of said polymer.
Claim 14
Dependent Claim
13 words
The process of claim 8, wherein said compound is an aromatic multisulfonic acid.
Claim 15
Dependent Claim
71 words
The process of claim 8, wherein said compound is selected from the group consisting of RX, R 3 OX, R 2 SO 4 , R'SO 2 Cl and R 3 "SiQ, where R, R'SO 2 or R 3 "Si is a group which forms a covalent bond with nitrogen and wherein R, R' and R" is alkyl containing from 1 to 20 carbon atoms or aryl, and Q is a halogen.
Claim 16
Dependent Claim
29 words
The process of claim 8, employing about 1 to about 99% of said conductive polymer and about 1 to about 99% of said maleimide, by weight of the mixture.
Claim 17
Dependent Claim
20 words
The process of claim 14, wherein said polymer is polyaniline and said maleimide is bismaleimide or a bismaleimide terminated oligomer.
Claim 18
Dependent Claim
35 words
The process of claim 15, wherein said compound is a carbonyl anhydride or a sulfonyl anhydride, and forming anhydride groups covalently linked to nitrogen atoms of said polymer, and including heating said continuous phase blend.
Claim 19
Dependent Claim
42 words
The process of claim 15, wherein said compound is an aromatic multisulfonic acid, and forming --SO 3 H groups covalently linked to nitrogen atoms of said polymer through the hydrogen bond on the nitrogen atoms, and including heating said continuous phase blend.
Claim 20
Dependent Claim
50 words
A blend of (a) a conductive polymer containing carbon-nitrogen linkages, said conductive polymer selected from the group consisting of conductive polyaniline, its naphthyl and biphenyl derivatives, and alkyl and aryl substituted polyaniline and its alkyl and aryl substituted naphthyl and biphenyl derivatives, and (b) a maleimide, in a suitable solvent.
Claim 21
Dependent Claim
50 words
A blend of (a) a conductive polymer containing carbon-nitrogen linkages, said conductive polymer selected from the group consisting of conductive polyaniline, its naphthyl and biphenyl derivatives, and alkyl and aryl substituted polyaniline and its alkyl and aryl substituted naphthyl and biphenyl derivatives, and (b) a maleimide, in a suitable solvent.
Claim 22
Dependent Claim
34 words
The blend of claim 18, wherein said conductive polymer is derived from a polymer having the formula: ##STR8## where A is aryl and y is an integer of from about 1 to about 1,000.
Claim 23
Dependent Claim
29 words
The blend of claim 18, employing about 1 to about 99% of said conductive polymer and about 1 to about 99% of said maleimide, by weight of the mixture.
Claim 24
Dependent Claim
22 words
The blend of claim 18, said conductive polymer having an organic or inorganic group covalently linked to nitrogen atoms of said polymer.
Claim 25
Dependent Claim
38 words
The blend of claim 18, wherein said conductive polymer is conductive polyaniline, and said conductive polyaniline has an organic group derived from an anhydride or an organic multisulfonic acid covalently linked to the nitrogen atoms of said polyaniline.
Claim 26
Dependent Claim
16 words
The blend of claim 18, wherein said maleimide is a bismaleimide or a bismaleimide terminated oligomer.
Claim 27
Dependent Claim
40 words
The blend of claim 22, wherein said maleimide is a bismaleimide or a bismaleimide terminated oligomer, employing about 1 to about 99% of said conductive polymer and about 1 to about 99% of said maleimide, by weight of the mixture.
Claim 28
Dependent Claim
93 words
An electrically conductive solid polymer material, comprising a continuous phase blend of (a) a conductive polymer containing carbon-nitrogen linkages selected from the group consisting of conductive polyaniline, its naphthyl and biphenyl derivatives, and alkyl and aryl substituted polyaniline and its alkyl and aryl substituted naphthyl and biphenyl derivatives, said conductive polymer having an organic or inorganic group covalently linked to nitrogen atoms of said polymer, and (b) a maleimide, said polymer material containing about 1 to about 99% of said conductive polymer and about 1 to about 99% of said maleimide, by weight.
Claim 29
Dependent Claim
93 words
An electrically conductive solid polymer material, comprising a continuous phase blend of (a) a conductive polymer containing carbon-nitrogen linkages selected from the group consisting of conductive polyaniline, its naphthyl and biphenyl derivatives, and alkyl and aryl substituted polyaniline and its alkyl and aryl substituted naphthyl and biphenyl derivatives, said conductive polymer having an organic or inorganic group covalently linked to nitrogen atoms of said polymer, and (b) a maleimide, said polymer material containing about 1 to about 99% of said conductive polymer and about 1 to about 99% of said maleimide, by weight.
Claim 30
Dependent Claim
34 words
The electrically conductive polymer material of claim 25, wherein said conductive polymer has an organic group derived from an anhydride or an aromatic multisulfonic acid covalently linked to the nitrogen atoms of said polymer.
Claim 31
Dependent Claim
35 words
The electrically conductive polymer material of claim 25, wherein said polymer is polyaniline, and said conductive polyaniline has an organic group derived from a multisulfonic acid covalently linked to the nitrogen atoms of said polyaniline.
Claim 32
Dependent Claim
52 words
The electrically conductive polymer material of claim 25, wherein said polymer is polyaniline, and said conductive polyaniline has an organic group selected from the class consisting of R, R'SO 2 and R 3 "Si covalently linked to the nitrogen atoms of said polyaniline, where R, R' and R" is alkyl or aryl.
Claim 33
Dependent Claim
19 words
The electrically conductive polymer material of claim 25, wherein said maleimide is a bismaleimide or a bismaleimide terminated oligomer.
Claim 34
Dependent Claim
19 words
The electrically conductive polymer material of claim 27, wherein said maleimide is a bismaleimide or a bismaleimide terminated oligomer.
Claim 35
Dependent Claim
34 words
The electrically conductive polymer material of claim 27, wherein said maleimide is a compound selected from the group having the following formulae: ##STR9## where m is an integer of from 1 to about 10.
Claim 36
Dependent Claim
23 words
The electrically conductive polymer material of claim 27, wherein said maleimide is a compound selected from the group having the following formulae: ##STR10##
References Cited (Backward Citations)
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