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FR2433231A1 - Electret realise en polymere d'alpha-olefine reticulee - Google Patents

Electret realise en polymere d'alpha-olefine reticulee

Info

Publication number
FR2433231A1
FR2433231A1 FR7920375A FR7920375A FR2433231A1 FR 2433231 A1 FR2433231 A1 FR 2433231A1 FR 7920375 A FR7920375 A FR 7920375A FR 7920375 A FR7920375 A FR 7920375A FR 2433231 A1 FR2433231 A1 FR 2433231A1
Authority
FR
France
Prior art keywords
olefin polymer
electret
crosslinked alpha
electret made
crosslinked
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
FR7920375A
Other languages
English (en)
Other versions
FR2433231B1 (fr
Inventor
Anupama Mishra
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Uniroyal Ltd Great Britain
Original Assignee
Uniroyal Ltd Great Britain
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
Application filed by Uniroyal Ltd Great Britain filed Critical Uniroyal Ltd Great Britain
Publication of FR2433231A1 publication Critical patent/FR2433231A1/fr
Application granted granted Critical
Publication of FR2433231B1 publication Critical patent/FR2433231B1/fr
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G7/00—Capacitors in which the capacitance is varied by non-mechanical means; Processes of their manufacture
    • H01G7/02—Electrets, i.e. having a permanently-polarised dielectric
    • H01G7/021—Electrets, i.e. having a permanently-polarised dielectric having an organic dielectric
    • H01G7/023—Electrets, i.e. having a permanently-polarised dielectric having an organic dielectric of macromolecular compounds
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F110/00—Homopolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
    • C08F110/14—Monomers containing five or more carbon atoms

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Power Engineering (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Manufacture Of Macromolecular Shaped Articles (AREA)
  • Filtering Materials (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Electrostatic Separation (AREA)

Abstract

L'invention a pour objet un nouvel électret. Cet électret comprend un polymère résineux électrostatiquement polarisé composé d'unités de récurrence et a la formule suivante :
FR7920375A 1978-08-10 1979-08-09 Electret realise en polymere d'alpha-olefine reticulee Granted FR2433231A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA309,053A CA1107950A (fr) 1978-08-10 1978-08-10 Electret fait d'un polymere alpha-olefinique ramifie

Publications (2)

Publication Number Publication Date
FR2433231A1 true FR2433231A1 (fr) 1980-03-07
FR2433231B1 FR2433231B1 (fr) 1983-02-11

Family

ID=4112093

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7920375A Granted FR2433231A1 (fr) 1978-08-10 1979-08-09 Electret realise en polymere d'alpha-olefine reticulee

Country Status (6)

Country Link
US (1) US4288584A (fr)
JP (1) JPS5526700A (fr)
CA (1) CA1107950A (fr)
DE (1) DE2932417A1 (fr)
FR (1) FR2433231A1 (fr)
GB (1) GB2027730B (fr)

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4586995A (en) * 1982-09-17 1986-05-06 Phillips Petroleum Company Polymer and irradiation treatment method
CA1298451C (fr) * 1985-08-02 1992-04-07 Hiromi Shigemoto Films et feuilles a surface rugueuse et methode de fabrication et d'utilisation de ces produits
US4873101A (en) * 1985-09-26 1989-10-10 Minnesota Mining And Manufacturing Company Microwave food package and grease absorbent pad therefor
CA1283384C (fr) * 1985-09-26 1991-04-23 Curtis L. Larson Aliment sous emballage allant au four a micro-ondes
JP2554071B2 (ja) 1987-03-19 1996-11-13 出光興産株式会社 オレフイン系共重合体およびその製造方法
EP0283958B1 (fr) * 1987-03-19 1996-09-11 Idemitsu Kosan Company Limited Polymères oléfiniques et leur procédé de préparation
JP2547208B2 (ja) 1987-03-19 1996-10-23 出光興産株式会社 オレフイン系重合体およびその製造方法
JP2561277B2 (ja) 1987-06-10 1996-12-04 出光興産株式会社 分枝α−オレフィン共重合体およびその製造方法
JP2545889B2 (ja) * 1987-11-20 1996-10-23 東洋紡績株式会社 メルトブロー不織布
US4874399A (en) * 1988-01-25 1989-10-17 Minnesota Mining And Manufacturing Company Electret filter made of fibers containing polypropylene and poly(4-methyl-1-pentene)
JPH0517595A (ja) * 1991-07-15 1993-01-26 Matsushita Electric Ind Co Ltd 高分子超薄膜エレクトレツト及びその製造方法
US5610455A (en) * 1995-06-29 1997-03-11 Minnesota Mining And Manufacturing Company Electret containing syndiotactic vinyl aromatic polymer
US5908598A (en) * 1995-08-14 1999-06-01 Minnesota Mining And Manufacturing Company Fibrous webs having enhanced electret properties
US6432175B1 (en) 1998-07-02 2002-08-13 3M Innovative Properties Company Fluorinated electret
US6454986B1 (en) 1999-10-08 2002-09-24 3M Innovative Properties Company Method of making a fibrous electret web using a nonaqueous polar liquid
US6406657B1 (en) 1999-10-08 2002-06-18 3M Innovative Properties Company Method and apparatus for making a fibrous electret web using a wetting liquid and an aqueous polar liquid
US6375886B1 (en) * 1999-10-08 2002-04-23 3M Innovative Properties Company Method and apparatus for making a nonwoven fibrous electret web from free-fiber and polar liquid
US6673158B1 (en) 2000-08-21 2004-01-06 The Procter & Gamble Company Entangled fibrous web of eccentric bicomponent fibers and method of using
US6534174B1 (en) 2000-08-21 2003-03-18 The Procter & Gamble Company Surface bonded entangled fibrous web and method of making and using
US6899931B2 (en) 2001-09-07 2005-05-31 S. C. Johnson Home Storage, Inc. Film material
US6846449B2 (en) 2001-09-07 2005-01-25 S. C. Johnson Home Storage, Inc. Method of producing an electrically charged film
AU2003238880A1 (en) * 2002-06-07 2003-12-22 California Institute Of Technology Electret generator apparatus and method
WO2003105305A2 (fr) * 2002-06-07 2003-12-18 California Institute Of Technology Procede, et dispositif obtenu par ce procede, permettant de fabriquer des electrets sur des substrats massifs
US10672564B2 (en) 2018-09-23 2020-06-02 Kirk W. Rosener Electret energy storage system

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2007144A1 (fr) * 1968-04-27 1970-01-02 Sony Corp
FR2371758A1 (fr) * 1976-11-22 1978-06-16 Uniroyal Ltd Electrets de polymeres du type styrene

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1225871A (fr) * 1968-01-29 1971-03-24
JPS5019183B1 (fr) * 1970-03-10 1975-07-04

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2007144A1 (fr) * 1968-04-27 1970-01-02 Sony Corp
FR2371758A1 (fr) * 1976-11-22 1978-06-16 Uniroyal Ltd Electrets de polymeres du type styrene

Also Published As

Publication number Publication date
CA1107950A (fr) 1981-09-01
US4288584A (en) 1981-09-08
DE2932417A1 (de) 1980-02-28
GB2027730B (en) 1982-08-04
GB2027730A (en) 1980-02-27
FR2433231B1 (fr) 1983-02-11
JPS5526700A (en) 1980-02-26

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Legal Events

Date Code Title Description
ST Notification of lapse