 Rechargeable electrical storage battery with zinc anode and aqueous alkaline electrolyte |
| What is claimed is: 1. An improved electrical storage battery having a zinc containing anode, a ... |
|
| Sealed container construction capable of safely venting internal pressure |
| In accordance with the invention a sealed electrical energy storage container is provided which is ... |
|
| Tape winding and splicing machine |
| These and other objects of the present invention are addressed by providing a remotely controlled ... |
|
| Process for making uniform short non-cellulosic fibers |
| OF THE INVENTION The novel process of the present invention may be described with reference to ... |
|
| Apparatus for fabrication of magnetic recording media |
| In view of the above, the present invention has for its object to provide a method and apparatus ... |
|
| Magnetic recording medium |
| Therefore, one object of this invention is to provide a magnetic recording medium which is highly ... |
|
| Magnetic recording medium |
| OF THE INVENTION According to this invention, a thin magnetic metal film can be formed on a base ... |
|
| Covering metal structure for metallized metal layer in electronic part |
| Under this background, we made research, and as the result, we found that if the surface of a ... |
|
| Electrically insulating and sealing frame |
| OF THE PREFERRED EMBODIMENT Reactant gas manifolds can be arranged to separately provide fuel gas ... |
|
| Gold-plated electronic components |
| OF THE INVENTION The present invention is concerned with electronic components having a gold-... |
|
|
Foamed polymer semiconductor composition and a method of producing thereof
| Details |
Inventors: Topchiashvili, Mikhail Izmailovich; Datsko, Taisia Fedorovna; Kikvilashvili, Givi Mikhailovich; Maisuradze, Ledi Alexeevna;
Assignee:
Primary Examiner: Lovering; Richard D.
Assistant Examiner: Parr; E. Suzanne
Attorney, Agent or Firm: Haseltine, Lake & Waters
A foamed polymer semiconductor composition, characterized in that it has the following formulation, in weight parts: PRETEXTREPLACED After mixing the above-mentioned components self-foaming of the composition takes place and then its hardening follows. The composition has electric specific resistance in the range of 10 to 10.sup.12 ohm.cm. The present composition will find wide application in civil and hydraulic engineering for plugging up cracks in concrete and reinforced concrete structures. |
|
DETAILED DESCRIPTION We claim: 1.
A foamed polymer semiconductor composition having a formulation, in weight parts:
epoxy resin 100
electrically conductive black
or graphite 10-60
polyethylhydridesiloxane 0.
1-50
polyethylenepolyamine 10-25
organic solvent 0-50
2.
A method of producing a foamed polymer semiconductor composition according to claim 1 comprising mixing 100 parts by weight of epoxy resin and, optionally, 0 to 50 parts by weight of an organic solvent for said epoxy resin with 10 to 60 parts by weight of electrically conductive black or graphite and agitating the mixture until a homogeneous mass is obtained, adding to the mixture 0.
1 through 50 parts by weight of polyethylhydridesiloxane and 10 through 25 parts by weight of polyethylenepolyamine, agitating the mixture until a homogeneous distribution of the polyethylhydridesiloxane and polyethylenepolyamine in the mixture is obtained and allowing said mixture to foam and subsequently harden to form said foamed polymer semiconductor composition.
Description:
The present invention relates to electrically conductive polymer materials and more particularly to foamed polymer semiconductor compositions and methods of their production.
The above-mentioned composition may be employed in various engineering fields, for example, in rocketry and aircraft engineering as a heat-insulating material, as a material to remove static electricity and that to absorb radiowaves.
Moreover, it may be used in civil and hydraulic engineering for plugging up cracks in concrete and reinforced concrete structures.
Known in the art is a foamed polymer semiconductor composition based on epoxy resin, which includes electrically conductive black and a hardener, viz.
polyethylenepolyamine.
A disadvantage of such a composition lies in the fact it has insufficient heat resistance and is produced by the method requiring additional expenses to carry out, foaming of the components.
The method of producing the above-mentioned composition consists in blending epoxy resin with electrically conductive black and polyethylenepolyamine; the resulting mixture being foamed by a gas introduced into it, for example, by some inert gas
|
| Related patents |
|
|
Pharmaceutical compositions for intranasal administration of calcitonin
We claim: 1. A pharmaceutical composition comprising a non-toxic, therapeutically effective amount of a calcitonin, a non-toxic effective amount of an absorption ...
|
|
|
Method of cleaning aluminum surfaces
What is claimed is: 1. A method of cleaning surfaces of an aluminum article, comprising subjecting the article to electrolytic action by making it anodic in an aqueous ...
|
|
|
Method for measuring the water content of a solid sample using Karl Fischer's coulometric titration
OF THE INVENTION The electrolytic solution which can be used in the present invention comprises iodine or an iodide, sulfur dioxide, a specific amine and a specific ...
|
|
|
Electrolyte-cathode assembly for a fuel cell
We claim: 1. An electrolyte-cathode assembly for a solid electrolyte fuel cell suitable for operation at high temperatures, which assembly comprises a gas-tight body ...
|
|
|
Humidity sensitive ceramics
It is therefore an object of the present invention to provide a humidity sensitive ceramics with good aging in the humidity detecting function. Another object of the ...
|
|
|
Process for the oxydehydrogenation of ethane to ethylene
We claim: 1. A process for the oxydehydrogenation of ethane comprising the step of: contacting ethane and an oxygen-containing gas at a temperature of at least 300....
|
|
|
Electrochemical process for the synthesis of organic compounds
We claim: 1. In an electrochemical process conducted in an undivided electrolytic cell having a graphite anode and a platinum cathode, wherein a starting methylbenzene ...
|
|
|
Removal of sulfur oxides from fluid streams
That which is claimed is: 1. A process for removing a sulfur oxide from a gaseous stream containing a sulfur oxide comprising the step of contacting said gaseous stream ...
|
|
|
Reducible metal oxide compositions containing zirconium oxide, yttrium oxide and an alkali metal component
OF THE INVENTION While the compositions of the present invention are referred to as "catalyst", it will be understood that, under conditions of use, this catalyst ...
|
|
|
Process for producing a high density ceramic of perovskite
OF THE PREFERRED EMBODIMENT As the metal elements of component A in perovskite of the formula ABO.sub.3 wherein A and B are as defined above, there may be mentioned, ...
|
|
|
Fuel Cells 
