IT1099669B - Processo di post-trattamento di polimeri tetrafluoroetilenici pre-trattati termicamente con miglioramento del comportamento allo scorrimento e polvere di polimero post-trattata in tal modo - Google Patents

Processo di post-trattamento di polimeri tetrafluoroetilenici pre-trattati termicamente con miglioramento del comportamento allo scorrimento e polvere di polimero post-trattata in tal modo

Info

Publication number
IT1099669B
IT1099669B IT28280/78A IT2828078A IT1099669B IT 1099669 B IT1099669 B IT 1099669B IT 28280/78 A IT28280/78 A IT 28280/78A IT 2828078 A IT2828078 A IT 2828078A IT 1099669 B IT1099669 B IT 1099669B
Authority
IT
Italy
Prior art keywords
post
treated
improvement
way
treatment process
Prior art date
Application number
IT28280/78A
Other languages
English (en)
Italian (it)
Other versions
IT7828280A0 (it
Original Assignee
Hoechst Ag
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 Hoechst Ag filed Critical Hoechst Ag
Publication of IT7828280A0 publication Critical patent/IT7828280A0/it
Application granted granted Critical
Publication of IT1099669B publication Critical patent/IT1099669B/it

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J3/00—Processes of treating or compounding macromolecular substances
    • C08J3/12—Powdering or granulating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B13/00—Conditioning or physical treatment of the material to be shaped
    • B29B13/10—Conditioning or physical treatment of the material to be shaped by grinding, e.g. by triturating; by sieving; by filtering
    • 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
    • C08F6/00—Post-polymerisation treatments
    • C08F6/06—Treatment of polymer solutions
    • C08F6/10—Removal of volatile materials, e.g. solvents
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2327/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers
    • C08J2327/02—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment
    • C08J2327/12—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
    • C08J2327/18—Homopolymers or copolymers of tetrafluoroethylene
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2982—Particulate matter [e.g., sphere, flake, etc.]

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Processes Of Treating Macromolecular Substances (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
IT28280/78A 1977-10-01 1978-09-29 Processo di post-trattamento di polimeri tetrafluoroetilenici pre-trattati termicamente con miglioramento del comportamento allo scorrimento e polvere di polimero post-trattata in tal modo IT1099669B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2744244A DE2744244C3 (de) 1977-10-01 1977-10-01 Thermisch vorbehandeltes, aus der Schmelze nicht verarbeitbares, mit einem perfluorierten Monomeren modifiziertes Tetrafluoräthylen-Polymerisatpulver und Verfahren zur Herstellung von Pulvern von aus der Schmelze nicht verarbeitbaren Tetrafluoräthylen-Polymerisaten mit hohem Schüttgewicht und guter Rieselfähigkeit

Publications (2)

Publication Number Publication Date
IT7828280A0 IT7828280A0 (it) 1978-09-29
IT1099669B true IT1099669B (it) 1985-09-28

Family

ID=6020418

Family Applications (1)

Application Number Title Priority Date Filing Date
IT28280/78A IT1099669B (it) 1977-10-01 1978-09-29 Processo di post-trattamento di polimeri tetrafluoroetilenici pre-trattati termicamente con miglioramento del comportamento allo scorrimento e polvere di polimero post-trattata in tal modo

Country Status (7)

Country Link
US (1) US4216265A (enExample)
EP (1) EP0001420B1 (enExample)
JP (2) JPS5458746A (enExample)
CA (1) CA1142696A (enExample)
DE (2) DE2744244C3 (enExample)
IN (1) IN150977B (enExample)
IT (1) IT1099669B (enExample)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2949908A1 (de) * 1979-12-12 1981-06-19 Hoechst Ag, 6230 Frankfurt Rieselfaehige sinterpulver mit verbesserten eigenschaften auf basis von tetrafluorethylen-polymeren und verfahren zu deren herstellung
DE3110193A1 (de) * 1980-06-06 1982-09-30 Hoechst Ag, 6000 Frankfurt "verbessertes verfahren zur herstellung von modifiziertem tetrafluorethylen-polymerisatpulver mit hohem schuettgewicht und guter rieselfaehigkeit"
US4407988A (en) * 1980-08-27 1983-10-04 Millipore Corporation Method for preparing a wear-resistant composition containing fluorinated graphite, graphite fibers and PTFE
DE3135598A1 (de) * 1981-09-09 1983-03-17 Hoechst Ag, 6000 Frankfurt "kontinuierliches verfahren zur agglomerierung von ptee-pulvern im fluessigen medium und damit gewonnenes modifiziertes ptee-pulver"
JPS62260849A (ja) * 1986-04-11 1987-11-13 Daikin Ind Ltd 熱溶融性フツ素樹脂の顆粒状粉末およびその製造法
US5560986A (en) * 1990-04-27 1996-10-01 W. L. Gore & Associates, Inc. Porous polytetrafluoroethylene sheet composition
WO1996028498A1 (fr) * 1995-03-15 1996-09-19 Daikin Industries, Ltd. Procede pour l'elaboration de poudre a mouler en polytetrafluoroethylene
DE19547907A1 (de) * 1995-12-21 1997-06-26 Dyneon Gmbh Nichtrieselfähige Formpulver aus modifizierten Polytetrafluorethylenen
US6911489B2 (en) * 2002-06-10 2005-06-28 Asahi Glass Fluoropolymers Usa, Inc. Methods for preparing agglomerated pellets of polytetrafluoroethylene and molded articles and the agglomerated pellets of polytetrafluoroethylene and molded articles prepared thereby
EP2752440B1 (en) 2011-08-29 2018-10-24 Daikin Industries, Ltd. Fluorine-containing polymer powder, film, and method for producing fluorine-containing polymer powder
EP2810958B1 (en) * 2012-02-02 2016-11-30 Asahi Glass Company, Limited Method for producing polytetrafluoroethylene fine powder
CN109705239B (zh) * 2018-12-19 2021-07-23 福建三农新材料有限责任公司 一种聚四氟乙烯分散树脂的连续后处理系统及方法
CN115850889B (zh) * 2022-12-29 2023-07-25 深圳市富程威科技股份有限公司 一种微孔薄膜及其制备方法和应用

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2400091A (en) * 1944-09-20 1946-05-14 Du Pont Molding process
US2989777A (en) * 1957-06-04 1961-06-27 Surf Chemical Inc Dry powder extruding apparatus and methods for producing polytetrafluoroethylene articles
US3087921A (en) * 1958-09-02 1963-04-30 Du Pont Polytetrafluoroethylene molding powder
US3152201A (en) * 1961-01-03 1964-10-06 Du Pont Manufacture of polytetrafluoroethylene powders
US3640984A (en) * 1963-11-04 1972-02-08 Allied Chem Polytetrafluoroethylene
US3331825A (en) * 1963-11-05 1967-07-18 Thiokol Chemical Corp Polytetrafluoroethylene molding powders
US3527857A (en) * 1965-10-26 1970-09-08 Hoechst Ag Process for preparing polytetrafluoroethylene-containing powder
US3419522A (en) * 1965-11-22 1968-12-31 Du Pont Nongraying, nonyellowing polytetrafluoroethylene molding powder
DE1679830C3 (de) * 1965-12-30 1974-01-10 Farbwerke Hoechst Ag, Vormals Meister Lucius & Bruening, 6000 Frankfurt Verfahren zur Herstellung eines Granulats aus pulvrigem Polytetrafluoräthylen
US3528955A (en) * 1967-05-16 1970-09-15 Liquid Nitrogen Processing Polytetrafluoroethylene molding powder and process of preparing the same
DE2063635C3 (de) * 1970-12-30 1980-01-03 Daikin Kogyo Co. Ltd., Tokio Verfahren zur Herstellung eines nicht faserigen ultrafeinen Polytetrafluoräthylen-Formpulvers
JPS5032098B2 (enExample) * 1972-08-09 1975-10-17
JPS5625446B2 (enExample) * 1972-08-21 1981-06-12

Also Published As

Publication number Publication date
EP0001420B1 (de) 1981-06-24
DE2744244A1 (de) 1979-04-05
IN150977B (enExample) 1983-02-05
JPS5458746A (en) 1979-05-11
EP0001420A1 (de) 1979-04-18
JPH01118408A (ja) 1989-05-10
JPH0118088B2 (enExample) 1989-04-04
CA1142696A (en) 1983-03-08
DE2860805D1 (en) 1981-10-01
DE2744244C3 (de) 1981-01-08
JPH0260683B2 (enExample) 1990-12-18
US4216265A (en) 1980-08-05
DE2744244B2 (de) 1980-05-14
IT7828280A0 (it) 1978-09-29

Similar Documents

Publication Publication Date Title
IT1099669B (it) Processo di post-trattamento di polimeri tetrafluoroetilenici pre-trattati termicamente con miglioramento del comportamento allo scorrimento e polvere di polimero post-trattata in tal modo
BR7703468A (pt) Processo para producao de aluminio metalico aperfeicoamento em processo para producao de aluminio metalico,e aparelho para producao do mesmo
NL7502728A (nl) Werkwijze voor het polymeriseren van 1-alkenen en gevormde voortbrengselen, die geheel of ten dele uit de aldus bereide polymeren bestaan.
IT1142936B (it) Elettrolito di cromo trivalente con agente riducente di vanadio e relativo procedimento di elettroplaccatura
NO155843C (no) Fremgangsmaate ved polymerisering av vinylklorid med vesentlig eliminering av polymeroppbygging paa de indre overflater av polymerisasjonskaret.
BR7700096A (pt) Processo de fabricar um componente eletrico e componente eletrico fabricado de acordo com dito processo
NL182153B (nl) Werkwijze voor het verhogen van de slagvastheid van monovinylideen aromatische polymeren en gevormde voortbrengselen vervaardigd onder toepassing van de aldus bereide polymeren.
BR7705077A (pt) Guia otica de ondas,com resistencia tensil ultra-elevada,e metodo de fabricacao da mesma
IT7869502A0 (it) Polimeri sostituiti con polialchilpiperiline, procedimento per la preparazione e loro impiego come stabilizzanti
BR7507981A (pt) Banho de revestimento para revestimento cataforetico de superficies metalicas,processo para a preparacao deste banho e suas utilizacoes
IT7826457A0 (it) Moderatore di energia nel campo delle microonde.
AT333616B (de) Langen- und tiefeneinstellbares scharnier mit einem elastischen zwischenstuck
JPS5359624A (en) Allyl acrylic monomer and preparing process thereof and polymer obtained from said monomer
IT1060685B (it) Processo per la preparazione di omopolimeri e copolimeri del tetrafluoroetilene
BR7704321A (pt) Misturas de aclaradores oticos,e processo de aclaramento otico
IT7823287A0 (it) Poli(organofosfazeni) con cromofori come gruppi sostituenti.
BR7806277A (pt) Composicao extrudavel fundida,de revestimento,e processo de revestimento
JPS5374552A (en) Stable ethyleneechlorotrifluoroethylene polymer composition with decreased corrosive action against metal
IT8249035A0 (it) Tintura nella massa delle materie polimere con complessi metalliferi
NL181581C (nl) Werkwijze voor het polymeriseren van vinylchloride en gevormde voortbrengselen, vervaardigd onder toepassing van de aldus bereide polymeren.
BR7505703A (pt) Processo e aparelho para a fabricacao de elementos de acoplamento em forma de helicoides para fechos corredicos
IT7829339A0 (it) Processo per la reticolazione di polimeri con azo-esteri.
AR216710A1 (es) Obturador basculante,regulador de tiro,y metodo de refrigerar tal regulador
IT7828629A0 (it) Procedimento per migliorare le proprieta' fisiche di polimeri di fosfazeni.
IT7823767A0 (it) Catalizzatore per uso nella produzione di resine poliolefiniche e procedimento per prepararlo.

Legal Events

Date Code Title Description
TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19970827