Conductive plastic composite and its preparation and use
First Claim
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1. A conductive plastic composition made by the process comprising:
- a) dissolving from 0.1 to 50 percent by weight of a conductive poly(3-substituted thiophene) polymer in to a matrix monomer in liquid state, said matrix monomer being styrene;
b) polymerizing said matrix monomer into a matrix polymer by a polymerization process selected from the group consisting of suspension, emulsion and mass polymerization.
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Abstract
The invention relates to the homogenization of mixtures of internally conductive polymers like 3-substituted polythiophene and matrix polymers. With an efficient homogenization the conductivity is improved when the portion of the conductive polymer is low. An efficient homogenization is achieved in the invention by mixing the internally conductive polymer with a monomer or by dissolving it into it, after which the monomer is polymerized. The plastic composites so obtained are used for several purposes in which conductivity is needed, such as EMI and ESD shielding.
16 Citations
27 Claims
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1. A conductive plastic composition made by the process comprising:
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a) dissolving from 0.1 to 50 percent by weight of a conductive poly(3-substituted thiophene) polymer in to a matrix monomer in liquid state, said matrix monomer being styrene; b) polymerizing said matrix monomer into a matrix polymer by a polymerization process selected from the group consisting of suspension, emulsion and mass polymerization. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A conductive plastic composition made by the process comprising:
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a) dissolving from 0.1 to 50 percent by weight of a conductive poly(3-substituted thiophene) polymer in to a matrix monomer in liquid state, said monomer being vinyl chloride; b) polymerizing said matrix monomer in to a matrix polymer by a polymerization process selected from the group consisting of suspension or emulsion polymerization. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A conductive plastic composition made by the process comprising:
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a) dissolving from 0.1 to 50 percent by weight of a conductive poly(3-substituted thiophene) polymer in to a matrix monomer in liquid state, said matrix monomer being a alpha-olefin; b) polymerizing said matrix monomer in to a matrix polymer by a polymerization process selected from the group consisting of solution and suspension. - View Dependent Claims (16, 17, 18, 19, 20, 21, 23, 24, 25, 26, 27)
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22. A conductive plastic composition made by the process comprising:
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a) dissolving from 0.1 to 50 percent by weight of a conductive poly(3-substituted thiophene) polymer into a matrix monomer in liquid state;
said matrix monomer selected from monomers that form polymers selected from the group consisting of;
polyester, polyamide, polyurethane and polysiloxane;b) polymerizing said matrix monomer into a matrix polymer by a polymerization process selected from the group consisting of step polymerization in solution or bulk.
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Specification