US4929388A
Expired / Lapsed
US
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Antistatic or electrically semiconducting thermoplastic polymer blends, method of making same and their use
Assignee: Zipperling Kessler GmbH and Co
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Filing: 1985-11-05
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Granted: 1990-05-29
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Expires: 2005-11-05
Abstract
Abstract Antistatic or electrically semiconducting thermoplastic polymer blends contain two partially compatible thermoplastic polymers A and B, whereof polymer A has a lower viscosity than polymer B and whereby the solubility parameters thereof also differ. Polymer A, which forms the continuous phase, contains an addition of electrically conductive substances and forms current-carrying conductor tracks. The polymer blends are suitable for producing antistatic or electrically semiconductor coatings, foils, moulded articles or parts.
Inventors
- 👤 Bernhard M. Wessling
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:08
CPC Classifications
H; H01; H01B; H01B1/00; H01B1/20; H01B1/22; H01B1/06; H01B1/12; H01B1/24
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
154 words
Antistatic or electrically semiconducting thermoplastic polymer blends based on organic polymers and electrically conductive substances, said polymer blends containing two partially compatible thermoplastic polymers A and B, wherein polymer A at a given temperature has a lower melt viscosity than polymer B, wherein there is a solubility parameter difference between polymer A and polymer B of approximately 0.3 to 1.5 (cal/cm 3 ) 1/2 , wherein the weight ratio of polymer A:polymer B is≦1:1, wherein polymer A forms the continuous phase essentially containing the electrically conductive substances, wherein said polymer blends contain conductive substances in a quantity of 0.5 to 30% by weight, based on the polymer blend, and said conductive substances are selected from the group consisting of metal powders or fibers, carbon fibers, conductive carbon black with a BET-surface>250 m 2 /g and a dibutyl phthalate absorption>140 cm 3 /100 g, electrically conductive doped organic polymers, non-polymeric organic conductors, and mixtures thereof.
Claim 2
Dependent Claim
154 words
Antistatic or electrically semiconducting thermoplastic polymer blends based on organic polymers and electrically conductive substances, said polymer blends containing two partially compatible thermoplastic polymers A and B, wherein polymer A at a given temperature has a lower melt viscosity than polymer B, wherein there is a solubility parameter difference between polymer A and polymer B of approximately 0.3 to 1.5 (cal/cm 3 ) 1/2 , wherein the weight ratio of polymer A:polymer B is≦1:1, wherein polymer A forms the continuous phase essentially containing the electrically conductive substances, wherein said polymer blends contain conductive substances in a quantity of 0.5 to 30% by weight, based on the polymer blend, and said conductive substances are selected from the group consisting of metal powders or fibers, carbon fibers, conductive carbon black with a BET-surface>250 m 2 /g and a dibutyl phthalate absorption>140 cm 3 /100 g, electrically conductive doped organic polymers, non-polymeric organic conductors, and mixtures thereof.
Claim 3
Dependent Claim
59 words
Polymer blends according to claim 1, wherein polymers A and B are selected from the group consisting of ethylene-vinylacetate copolymer/polyvinylchloride, ethylene-vinylacetate copolymer/polyethylene, chlorinated polyethylene/acrylonitrile-butadiene-styrene copolymer, styrene-butadiene-styrene-block copolymer/polyethylene, polystyrene/styrene-butadiene-styrene block copolymer, polyamide copolymer/polyamide, polyamide/polyoxymethylene, ethylene-vinylacetate copolymer/acrylonitrile-butadiene-styrene copolymer, α-methylstyrene/polyvinylchloride, ethylene-vinylacetate-carbonmonoxide copolymer/polyvinylchloride, ethylene-vinylacetate-carbonmonoxide copolymer/polyurethane, polyurethane/polyamide, polyurethane/polycarbonate, polycaprolactone/polyether polyurethane, polyester polyurethane/polyvinyl chloride, polyurethane/acrylonitrile-butadiene-styrene copolymer, polycaprolactone/acrylonitrile-methacrylate-butadiene copolymer, polycaprolactone/polyurethane and polycaprolactone/ethylene-vinylacetate copolymer and mixtures thereof.
Claim 4
Dependent Claim
17 words
Polymer blends according to claim 1 wherein polymer A is a mixture of mutually compatible thermoplastic polymers.
Claim 5
Dependent Claim
17 words
Polymer blends according to claim 1 wherein polymer B is a mixture of mutually compatible thermoplastic polymers.
Claim 6
Dependent Claim
27 words
Polymer blends according to claim 1, wherein the the proportion of polymer A in the mixture of polymers A and B is 20% to 40% by weight.
Claim 7
Dependent Claim
21 words
Polymer blends according to claim 1, wherein said polymer blends contain chemical crosslinking agents for one or more of said polymers.
Claim 8
Dependent Claim
38 words
Polymer blends according to claim 1, wherein the conductive substance is a conductive organic polymer selected from the group consisting of polyacetylene; poly (1,3,5. . . n-substituted polyacetylene); acetylene copolymers; 1,3-tetramethylene bridged polymers; poly(1,6-heptadiene); polyparaphenylenes; polypyrrolene; and polyphthalocyanins.
Claim 9
Dependent Claim
27 words
Polymer blends according to claim 1, wherein the conductive substance is a non-polymeric organic conductor selected from the group consisting of complex salts and charge transfer complexes.
Claim 10
Dependent Claim
14 words
Polymer blends according to claim 1, wherein the conductive substance is a tetracyanoquinodimethane salt.
Claim 11
Dependent Claim
33 words
Polymer blends according to claim 1, wherein the conductive substance is carbon black, and said carbon black is present in a quantity of 0.5 to 10%, by weight based on the polymer blend.
Claim 12
Dependent Claim
33 words
Polymer blends according to claim 1, wherein the conductive substance is metal powders, and said metal powders are present in a quantity of less than 30%, by weight based on the polymer blend.
Claim 13
Dependent Claim
31 words
Polymer blends according to claim 1, wherein the conductive substance is polyacetylene, and said polyacetylene is present in a quantity of 1 to 3%, by weight based on the polymer blend.
Claim 14
Dependent Claim
138 words
Antistatic or electrically semiconducting thermoplastic polymer blends based on organic polymers and electrically conductive substances, said polymer blends containing two partially compatible thermoplastic polymers A and B, wherein polymer A at a given temperature has a lower melt viscosity than polymer B, wherein there is a solubility parameter difference between polymer A and polymer B of approximately 0.3 to 1.5 (cal/cm 3 ) 1/2 , wherein the weight ratio of polymer A:polymer B is≦1:1, wherein polymer A forms the continuous phase essentially containing the electrically conductive substances, wherein said polymer blends contain conductive substances in a quantity of 0.5 to 30% by weight, based on the polymer blend, and said conductive substances are selected from the group consisting of metal powders or fibers, carbon fibers, conductive carbon black with a BET-surface>140 cm 3 /100 g, and mixtures thereof.
Claim 15
Dependent Claim
138 words
Antistatic or electrically semiconducting thermoplastic polymer blends based on organic polymers and electrically conductive substances, said polymer blends containing two partially compatible thermoplastic polymers A and B, wherein polymer A at a given temperature has a lower melt viscosity than polymer B, wherein there is a solubility parameter difference between polymer A and polymer B of approximately 0.3 to 1.5 (cal/cm 3 ) 1/2 , wherein the weight ratio of polymer A:polymer B is≦1:1, wherein polymer A forms the continuous phase essentially containing the electrically conductive substances, wherein said polymer blends contain conductive substances in a quantity of 0.5 to 30% by weight, based on the polymer blend, and said conductive substances are selected from the group consisting of metal powders or fibers, carbon fibers, conductive carbon black with a BET-surface>140 cm 3 /100 g, and mixtures thereof.
Claim 16
Dependent Claim
130 words
Antistatic or electrically semiconducting thermoplastic polymer blends based on organic polymers and electrically conductive substances, said polymer blends containing two partially compatible thermoplastic polymers A and B, wherein polymer A at a given temperature has a lower melt viscosity than polymer B, wherein there is a solubility parameter difference between polymer A and polymer B of approximately 0.3 to 1.5 (cal/cm 3 ) 1/2 , wherein the weight ratio of polymer A:polymer B is≦1:1, wherein polymer A forms the continuous phase essentially containing the electrically conductive substances, wherein said polymer blends contain conductive substances in a quantity of 0.5 to 30% by weight, based on the polymer blend, and said conductive substances are selected from the group consisting of electrically conductive doped organic polymers, non-polymeric organic conductors and mixtures thereof.
Claim 17
Dependent Claim
130 words
Antistatic or electrically semiconducting thermoplastic polymer blends based on organic polymers and electrically conductive substances, said polymer blends containing two partially compatible thermoplastic polymers A and B, wherein polymer A at a given temperature has a lower melt viscosity than polymer B, wherein there is a solubility parameter difference between polymer A and polymer B of approximately 0.3 to 1.5 (cal/cm 3 ) 1/2 , wherein the weight ratio of polymer A:polymer B is≦1:1, wherein polymer A forms the continuous phase essentially containing the electrically conductive substances, wherein said polymer blends contain conductive substances in a quantity of 0.5 to 30% by weight, based on the polymer blend, and said conductive substances are selected from the group consisting of electrically conductive doped organic polymers, non-polymeric organic conductors and mixtures thereof.
Claim 18
Dependent Claim
25 words
An article having an antistatic or electrically conductive coating and foil or moulded article comprised of a polymer blend having the composition of claim 1.
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