 Electroconductive elastic sponge member |
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| Molded polypropylene foam tire cores |
| OF THE INVENTION In that form of the present invention chosen for purposes of illustration in the ... |
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| Inverse quantizer |
| It is an object of the present invention to provide an inverse quantizing device which has a simple ... |
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| Magnetic particles used for electrostatic latent image developer and process for producing the same |
| OF THE INVENTION The number-average particle diameter of the composite particles according to the ... |
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| Spherical magnetic composite particles |
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| Synthetic resin composition |
| What is claimed is: 1. A synthetic resin composition comprising 40 to 98.5 wt. % of a synthetic ... |
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| Polyether based preparations and the use thereof |
| 1. A preparation comprising: (A) 30 to 56 wt.-% aziridino polyethers with a cyclic polyether ... |
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| Silicon steel sheets having low iron loss and method of producing the same |
| It is, therefore, an object of the invention to advantageously solve the aforementioned problems ... |
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| Susceptor for heating foods in a microwave oven having metallized layer deposited on paper |
| In accordance with the present invention, a susceptor for heating a food substance in a microwave ... |
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Electrically conductive plastics materials and process for their production
| Details |
Inventors: Reuter, Franz G.; Menzel, Tankred;
Assignee: Reuter Technologie GmbH (Lemforde, DE)
Primary Examiner: Padgett; Benjamin R.
Assistant Examiner: Barr; J. L.
Attorney, Agent or Firm: Stevens, Davis, Miller & Mosher
A method of producing electrically conductive plastics materials from polymers and electrically conductive particles wherein an aqueous dispersion of polyacrylate, such as a thermally cross-linkable copolymer based upon ethyl acrylate, or a polyisobutylene is mixed with an aqueous dispersion of electrically conductive particles such as noble metals, non-metallic materials coated with noble metals, or carbon, and the resulting mixture is spread out in a thin layer on a support, whereafter the water is evaporated at a temperature above the softening of the plastics material. |
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DETAILED DESCRIPTION We claim: 1.
A method of producing a thermoplastically further processable, electrically conductive plastic material from polymers and electrically conductive particles, comprising the steps of (1) mixing an aqueous dispersion of a thermoplastic synthetic resin with an aqueous dispersion of the electrically conductive particles, (2) spreading out the resulting mixture in a thin layer on a substrate, (3) subsequently evaporating water from the mixture at a temperature above the softening point of the synthetic resin, and (4) subsequently removing the formed electrically conductive plastic material layer from the substrate.
2.
A method of producing a thermoplastically further processable, electrically conductive plastic material from polymers and electrically conductive particles, comprising the steps of (1) mixing an aqueous dispersion of a polyacrylate or a polyisobutylene synthetic resin with an aqueous dispersion of the electrically conductive particles, (2) spreading out the resulting mixture in a thin layer on a substrate, (3) subsequently evaporating water from the mixture at a temperature above the softening point of the synthetic resin, and (4) subsequently removing the formed electrically conductive plastic material layer from the substrate.
3.
A method according to claim 1, wherein the aqueous dispersion of electrically conductive particles used is a dispersion in which the electrically conductive particles are noble metals, non-metallic materials coated with noble metals or carbon.
4.
A method according to claims 3, wherein the carbon used is carbon black or graphite.
5.
The method of claim 1 further comprising the step of repeating steps 1, 2 and 3 one or more times before performing step 4 until the electrically conductive plastic material layer has reached a desired thickness.
6.
An electrically conductive thermoplastic material produced by the method of claim 1.
7.
An electrically conductive thermoplastic material produced by the method of claim 5.
8.
An electrically conductive plastics material according to claim 6, which is in the form of chips or granules
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