IT7828280A0 - 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
IT7828280A0
IT7828280A0 IT7828280A IT2828078A IT7828280A0 IT 7828280 A0 IT7828280 A0 IT 7828280A0 IT 7828280 A IT7828280 A IT 7828280A IT 2828078 A IT2828078 A IT 2828078A IT 7828280 A0 IT7828280 A0 IT 7828280A0
Authority
IT
Italy
Prior art keywords
treated
post
way
treatment process
polymer powder
Prior art date
Application number
IT7828280A
Other languages
English (en)
Other versions
IT1099669B (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 true IT7828280A0 (it) 1978-09-29
IT1099669B 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 (it)
EP (1) EP0001420B1 (it)
JP (2) JPS5458746A (it)
CA (1) CA1142696A (it)
DE (2) DE2744244C3 (it)
IN (1) IN150977B (it)
IT (1) IT1099669B (it)

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
US6054083A (en) * 1995-03-15 2000-04-25 Daikin Industries, Ltd. Process for preparation of polytetrafluoroethylene molding powder
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
WO2013031858A1 (ja) * 2011-08-29 2013-03-07 ダイキン工業株式会社 含フッ素重合体粉末、皮膜、及び、含フッ素重合体粉末の製造方法
JP5983633B2 (ja) * 2012-02-02 2016-09-06 旭硝子株式会社 ポリテトラフルオロエチレンファインパウダーの製造方法
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 (it) * 1972-08-09 1975-10-17
JPS5625446B2 (it) * 1972-08-21 1981-06-12

Also Published As

Publication number Publication date
IN150977B (it) 1983-02-05
DE2860805D1 (en) 1981-10-01
DE2744244B2 (de) 1980-05-14
US4216265A (en) 1980-08-05
EP0001420A1 (de) 1979-04-18
JPH0260683B2 (it) 1990-12-18
DE2744244A1 (de) 1979-04-05
JPS5458746A (en) 1979-05-11
JPH01118408A (ja) 1989-05-10
JPH0118088B2 (it) 1989-04-04
IT1099669B (it) 1985-09-28
CA1142696A (en) 1983-03-08
EP0001420B1 (de) 1981-06-24
DE2744244C3 (de) 1981-01-08

Similar Documents

Publication Publication Date Title
IT7828280A0 (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.
Gragg Repeated extrapolation to the limit in the numerical solution of ordinary differential equations.
NL7500357A (nl) Werkwijze voor het polymeriseren of copolymeri- seren van alkenen en gevormde voortbrengselen, vervaardigd onder toepassing van de aldus be- reide polymeren of copolymeren.
NL7502728A (nl) Werkwijze voor het polymeriseren van 1-alkenen en gevormde voortbrengselen, die geheel of ten dele uit de aldus bereide polymeren bestaan.
BR7406538D0 (pt) Processo para a fabricacao de metais por meio de eletrolise em banho de fusao forno multicelular e eletrodo bipolar para a execucao de processo
NL185926B (nl) Werkwijze ter bereiding van niet-trombogene polyurethanen met kwaternaire ammoniumgroepen en werkwijze voor het hepariniseren van polymeren met kwaternaire ammoniumgroepen.
NL7705926A (nl) Werkwijze voor de vervaardiging van een opti- sche vezel en optische vezel vervaardigd vol- gens deze werkwijze.
NL182153B (nl) Werkwijze voor het verhogen van de slagvastheid van monovinylideen aromatische polymeren en gevormde voortbrengselen vervaardigd onder toepassing van de aldus bereide polymeren.
ES2082048T3 (es) Poli(eter de arileno) terminado en cicloalqueno y copolimeros en bloque de poli(eter de arileno)-polialquenamero fabricados a partir del mismo.
NL186071C (nl) Werkwijze voor het verminderen van het monomeergehalte in acrylonitrilepolymeren en -copolymeren, alsmede gevormd voortbrengsel, dat geheel of ten dele bestaat uit een aldus behandeld polymeer.
CH470221A (fr) Composition de moulage, procédé de fabrication de cette composition et utilisation de ladite
IT1165098B (it) Acciaio avente eccellenti prestazioni di attenuazione delle vibrazioni,e metodo per la produzione del medesimo
NL181581C (nl) Werkwijze voor het polymeriseren van vinylchloride en gevormde voortbrengselen, vervaardigd onder toepassing van de aldus bereide polymeren.
NL160840B (nl) Werkwijze voor de massapolymerisatie of -copolymerisatie van vinylchloride bij lage temperaturen en gevormde voort- brengselen, vervaardigd onder toepassing van aldus bereide polymeren en copolymeren.
JPS5417988A (en) Improved method of producing olefin polymer
CH430226A (fr) Pièce élastique en alliage à base de fer, procédé de fabrication de ladite pièce et utilisation de cette pièce
LIKHAREV et al. The efficiency of digital systems for coherent filtering and rejection
NL7514680A (nl) Bakoven met een ovenruimte, die verwarmd en/of met microgolven bestraald kan worden.
SU537835A1 (ru) Способ изготовлени полимерных изделий
NL7501184A (nl) Nieuwe samengestelde foelies, alsmede werkwijze de vervaardiging ervan.
SHERRARD Fundamental Research Needs for Water and Wastewater Treatment Systems
HEER Statistical mechanics, kinetic theory, and stochastic processes(Book- Statistical mechanics, kinetic theory, and stochastic processes.)
NL191517B (nl) Werkwijze ter bereiding van een katalysatorcomponent, die bruikbaar is bij het polymeriseren of copolymeriseren van alkenen, werkwijze ter bereiding van een katalysator met een aldus bereide katalysatorcomponent en werkwijze voor het polymeriseren of copolymeriseren van alkenen met een aldus bereide katalysator.
LARGE et al. Production rate and production cost(aircraft production/military aircraft)
Edneral et al. Effect of Co on the Ageing of Martensite and Ferrite in Fe-Co-W and Fe-Co-Mo Alloys

Legal Events

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

Effective date: 19970827