HK1021613A1 - Conductive polymer composition - Google Patents

Conductive polymer composition

Info

Publication number
HK1021613A1
HK1021613A1 HK98114530A HK98114530A HK1021613A1 HK 1021613 A1 HK1021613 A1 HK 1021613A1 HK 98114530 A HK98114530 A HK 98114530A HK 98114530 A HK98114530 A HK 98114530A HK 1021613 A1 HK1021613 A1 HK 1021613A1
Authority
HK
Hong Kong
Prior art keywords
conductive polymer
polymer composition
rcb
less
electrical devices
Prior art date
Application number
HK98114530A
Inventor
Jeff Shafe
O James Straley
Gordon Mccarty
Ravinder K Oswal
Bernadette A Trammell
Original Assignee
Raychem Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=22933384&utm_source=***_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=HK1021613(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Raychem Corp filed Critical Raychem Corp
Publication of HK1021613A1 publication Critical patent/HK1021613A1/en

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
    • H01C7/02—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material having positive temperature coefficient
    • H01C7/027—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material having positive temperature coefficient consisting of conducting or semi-conducting material dispersed in a non-conductive organic material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
    • H01C7/02—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material having positive temperature coefficient

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Ceramic Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Conductive Materials (AREA)
  • Thermistors And Varistors (AREA)
  • Inks, Pencil-Leads, Or Crayons (AREA)

Abstract

Electrical devices with improved resistance stability comprise a PTC element comprising a conductive polymer and two electrodes. The conductive polymer composition comprises an organic crystalline polymer and carbon black with a pH of less than 4.0. Particularly preferred conductive polymer compositions comprise carbon blacks which have a pH of less than 4.0, a dry resistivity RCB and a particle size D in nanometers such that RCB/D is at most 0.1. Electrical devices of the invention include heaters and circuit protection devices.
HK98114530A 1988-09-20 1998-12-21 Conductive polymer composition HK1021613A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US24705988A 1988-09-20 1988-09-20
PCT/US1989/004010 WO1990003651A1 (en) 1988-09-20 1989-09-15 Conductive polymer composition

Publications (1)

Publication Number Publication Date
HK1021613A1 true HK1021613A1 (en) 2000-06-16

Family

ID=22933384

Family Applications (1)

Application Number Title Priority Date Filing Date
HK98114530A HK1021613A1 (en) 1988-09-20 1998-12-21 Conductive polymer composition

Country Status (8)

Country Link
EP (2) EP0803879B1 (en)
JP (2) JP2876549B2 (en)
KR (1) KR100224945B1 (en)
AT (2) ATE161354T1 (en)
CA (1) CA1334480C (en)
DE (2) DE68929517T2 (en)
HK (1) HK1021613A1 (en)
WO (1) WO1990003651A1 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1267672B1 (en) * 1994-01-17 1997-02-07 Hydor Srl THERMAL SENSITIVE RESISTIVE COMPOUND, ITS METHOD OF REALIZATION AND USE
DE10310722A1 (en) 2003-03-10 2004-09-23 Tesa Ag Electrically heatable adhesive composition, useful for adhesive tape in automotive applications such as electrically heated mirrors, comprises an adhesive component and an electrically conductive filler
DE102007007617A1 (en) 2007-02-13 2008-08-14 Tesa Ag Intrinsically heatable hot melt tacky fabrics
DE102008034748A1 (en) 2008-07-24 2010-01-28 Tesa Se Flexible heated surface element
DE102008063849A1 (en) 2008-12-19 2010-06-24 Tesa Se Heated surface element and method for its attachment
DE102009010437A1 (en) 2009-02-26 2010-09-02 Tesa Se Heated surface element
US20130193384A1 (en) * 2012-01-31 2013-08-01 E. I. Du Pont De Nemours And Company Polymer thick film positive temperature coefficient carbon composition
JP7309444B2 (en) * 2018-07-05 2023-07-18 キヤノン株式会社 RESIN COMPOSITION, RESIN MOLDED PRODUCT, RESIN LAMINATED BODY, CARTRIDGE, IMAGE FORMING APPARATUS, METHOD FOR MANUFACTURING RESIN MOLDED BODY, METHOD FOR MANUFACTURING RESIN LAMINATED BODY, AND METHOD FOR MANUFACTURING CARTRIDGE

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4237441A (en) * 1978-12-01 1980-12-02 Raychem Corporation Low resistivity PTC compositions
US4277673A (en) * 1979-03-26 1981-07-07 E-B Industries, Inc. Electrically conductive self-regulating article
US4591700A (en) * 1980-05-19 1986-05-27 Raychem Corporation PTC compositions
EP0123540A3 (en) * 1983-04-20 1985-01-02 RAYCHEM CORPORATION (a California corporation) Conductive polymers and devices containing them
US4668857A (en) * 1985-08-16 1987-05-26 Belton Corporation Temperature self-regulating resistive heating element
AU589714B2 (en) * 1985-12-06 1989-10-19 Sunbeam Corp. PTC compositions containing a non-surface treated carbon black having an intermediate resistivity for reduced annealing

Also Published As

Publication number Publication date
JP2955281B2 (en) 1999-10-04
EP0435923A1 (en) 1991-07-10
KR900702544A (en) 1990-12-07
EP0803879B1 (en) 2004-03-24
KR100224945B1 (en) 1999-10-15
JPH04500745A (en) 1992-02-06
DE68929517D1 (en) 2004-04-29
WO1990003651A1 (en) 1990-04-05
EP0803879A1 (en) 1997-10-29
EP0435923B1 (en) 1997-12-17
JP2876549B2 (en) 1999-03-31
JPH11144907A (en) 1999-05-28
CA1334480C (en) 1995-02-21
DE68928502T2 (en) 1998-06-18
DE68928502D1 (en) 1998-01-29
ATE262725T1 (en) 2004-04-15
ATE161354T1 (en) 1998-01-15
DE68929517T2 (en) 2005-02-03

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Legal Events

Date Code Title Description
PF Patent in force
PC Patent ceased (i.e. patent has lapsed due to the failure to pay the renewal fee)

Effective date: 20040915