US4935164A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for producing mouldable polymer blends
Assignee: Zipperling Kessler GmbH and Co
•
Filing: 1985-06-13
•
Granted: 1990-06-19
•
Expires: 2005-06-13
Abstract
Abstract Substantially monomer-free, electrically conductive organic polymers and/or organic conductors are dissolved or dispersed in a melt or solution of a thermoplastic matrix polymer or polymer mixture partially compatible therewith and having a solubility parameter >8.6 (cal/cm3)1/2, in order to obtain mouldable polymer blends. The latter are suitable for producing moulded articles, particularly for electrical conductors, semiconductors or photoconductors. A suitable apparatus for producing the polymer blends comprises an extruder or kneader, through whose barrel one or more sonotrodes project into the transformation zone.
Inventors
- 👤 Bernhard M. Wessling
- 👤 Harald K. Volk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:26
CPC Classifications
B; B29; B29B; B29B7/00; B29B7/30; B29B7/34; B29B7/38; B29B7/46; B29B7/02; B29B7/06; B29B7/10; B29B7/18; B29B7/183; B29B7/36; B29C; B29C48/00; B29C48/14; B29C48/25; B29C48/285; B29C48/29; B29C48/36; B29C48/395; H; H01; H01B; H01B1/00; H01B1/06; H01B1/12; H01B1/121; H01B1/124; H01B1/125; H01B1/127; B29C48/03; B29K; B29K2105/00; B29K2105/0005; C; C08; C08G; C08G2261/00; C08G2261/30; C08G2261/31; C08G2261/312
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
82 words
Method for preparing a moldable polymer blend comprising the steps of liquifying a thermoplastic matrix component selected from the group consisting of polymers and polymer mixtures, which component has a solubility parameter of greater than 8.6 (cal/cm 3 ) 1/2 and a surface tension of 35 dyn/cm or more; and dispersing a conductive component in said liquified thermoplastic matrix component, said conductive component being selected from the group consisting of conductive polymers and organic conductors, so as to form a homogeneous blend.
Claim 2
Dependent Claim
82 words
Method for preparing a moldable polymer blend comprising the steps of liquifying a thermoplastic matrix component selected from the group consisting of polymers and polymer mixtures, which component has a solubility parameter of greater than 8.6 (cal/cm 3 ) 1/2 and a surface tension of 35 dyn/cm or more; and dispersing a conductive component in said liquified thermoplastic matrix component, said conductive component being selected from the group consisting of conductive polymers and organic conductors, so as to form a homogeneous blend.
Claim 3
Dependent Claim
63 words
Method according to claim 1 wherein said thermoplastic matrix component is a polymer selected from the group consisting of polyethers, polyesters, polyvinylidene chloride, polyvinylidene fluoride, polyamide, polycaprolactone, polyurethane, cellulose partially esterified with acetic, propionic or butyric acid, partially esterified polyvinyl alcohol, partially esterified polyvinyl acetate, polyvinyl pyrrolidone, polyvinyl butyral polyacrylic acid, liquid crystalline polyesters, ionomers or polymers having polar functional groups, and polyacrylonitrile.
Claim 4
Dependent Claim
18 words
Method according to claim 2 wherein said thermoplastic matrix component is a copolymer or mixture of said polymers.
Claim 5
Dependent Claim
19 words
Method according to claim 1 wherein said thermoplastic matrix component is liquified by heating the component to a melt.
Claim 6
Dependent Claim
27 words
Method according to claim 1 wherein said thermoplastic matrix component is liquified by dissolution in a solvent, and after formation of said blend, the solvent is removed.
Claim 7
Dependent Claim
23 words
Method according to claim 5 wherein said solvent is selected from the group consisting of toluene, dimethyl formamide, butylacetate, and CH 3 CN.
Claim 8
Dependent Claim
19 words
Method according to claim 1 wherein the conductive component comprises from 0.5 to 35% by weight of said blend.
Claim 9
Dependent Claim
18 words
Method according to claim 1 wherein the conductive component comprises at least 8% by weight of said blend.
Claim 10
Dependent Claim
34 words
Method according to claim 1 wherein said said conductive polymers are selected from the group consisting of polyacetylene, poly-1,3,5 . . . n-substituted polyacetylenes, acetylene copolymers, 1,3-tetramethylene-bridged polyenes, polyparaphenylenes, polypyrroles, polyphthalocyanines, polyanilines and polyperinaphthalines.
Claim 11
Dependent Claim
18 words
Method according to claim 1 wherein said organic conductors comprise non-polymeric organic complex salts or charge transfers complexes.
Claim 12
Dependent Claim
13 words
Method according to claim 10 wherein the organic conductor is a tetracyanoquinodimethane salt.
Claim 13
Dependent Claim
18 words
Method according to claim 1 wherein said components are subjected to ultrasonic shearing during formation of the blend.
Claim 14
Dependent Claim
24 words
Method according to claim 1 wherein said homogeneous blend has a different color appearance than either the thermoplastic matrix component and the conductive component.
Claim 15
Dependent Claim
20 words
Method according to claim 1 wherein said matrix component is polycaprolactone or cellulose propionate, and said conductive component is polyacetylene.
Claim 16
Dependent Claim
18 words
Method according to claim 1 wherein said matrix component is cellulose propionate, and said conductive component is poly-μ-cyano(phthalocyaninato)-cobalt(III).
Claim 17
Dependent Claim
13 words
Method according to claim 1 wherein said conductive component is n-doped or p-doped.
Claim 18
Dependent Claim
38 words
Method according to claim 16 wherein the conductive component is doped with a compound selected from the group consisting of: iodine, antimony pentafluoride, arsenic pentafluoride, tetrafluoro boric acid, perchlorates, sulphurtrioxide, sulphonates, iron (III)-chloride, butyl-lithium, diphenyl-hexyl-lithium, and naphthalin sodium.
Claim 19
Dependent Claim
84 words
Method for preparing a moldable polymer blend comprising the steps of: (a) dispersing a conductive component in a solvent under ultrasonic action, said conductive component comprising a conductive polymer or an organic conductor; and (b) mixing a thermoplastic matrix component with said dispersed conductive component, said thermoplastic matrix component being selected from the group consisting of polymers and polymer mixtures, which matrix component has a solubility parameter of greater than 8.6 (cal/cm 3 ) 1/2 and a surface tension of 35 dyn/cm or more.
Claim 20
Dependent Claim
84 words
Method for preparing a moldable polymer blend comprising the steps of: (a) dispersing a conductive component in a solvent under ultrasonic action, said conductive component comprising a conductive polymer or an organic conductor; and (b) mixing a thermoplastic matrix component with said dispersed conductive component, said thermoplastic matrix component being selected from the group consisting of polymers and polymer mixtures, which matrix component has a solubility parameter of greater than 8.6 (cal/cm 3 ) 1/2 and a surface tension of 35 dyn/cm or more.
Claim 21
Dependent Claim
41 words
Method according to claim 18 comprising the further step of doping the conductive component with a compound selected from the group consisting of: iodine, antimony pentafluoride, arsenic pentafluoride, tetrafluoro boric acid, perchlorates, sulphurtrioxide, sulphonates, iron (III)-chloride, butyl-lithium, diphenyl-hexyl-lithium, and naphthalin sodium.
Claim 22
Dependent Claim
18 words
Method according to claim 1, wherein the polymer blend is prepared under an inert gas atmosphere or vacuum.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-06-18 | 1993-12-18 | 1994-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-06-18 | 1997-12-18 | 1998-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-06-18 | 2001-12-18 | 2002-06-19 | $7700.00 | Window Closed / Lapsed |