ZA725036B - Process for the preparation of fluorocarbon waxes - Google Patents

Process for the preparation of fluorocarbon waxes

Info

Publication number
ZA725036B
ZA725036B ZA725036A ZA725036A ZA725036B ZA 725036 B ZA725036 B ZA 725036B ZA 725036 A ZA725036 A ZA 725036A ZA 725036 A ZA725036 A ZA 725036A ZA 725036 B ZA725036 B ZA 725036B
Authority
ZA
South Africa
Prior art keywords
preparation
fluorocarbon waxes
fluorocarbon
waxes
Prior art date
Application number
ZA725036A
Other languages
English (en)
Inventor
R Hartwimmer
E Weiss
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
Priority claimed from DE19712136639 external-priority patent/DE2136639C3/de
Application filed by Hoechst Ag filed Critical Hoechst Ag
Publication of ZA725036B publication Critical patent/ZA725036B/xx

Links

Classifications

    • 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
    • C08F8/00—Chemical modification by after-treatment
    • C08F8/50—Partial depolymerisation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/92—Measuring, controlling or regulating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92504—Controlled parameter
    • B29C2948/92514—Pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92504—Controlled parameter
    • B29C2948/92704—Temperature
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/022—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the choice of material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/78—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling
    • B29C48/80—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling at the plasticising zone, e.g. by heating cylinders
    • B29C48/802—Heating
    • 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
    • C08F2810/00—Chemical modification of a polymer
    • C08F2810/10—Chemical modification of a polymer including a reactive processing step which leads, inter alia, to morphological and/or rheological modifications, e.g. visbreaking

Landscapes

  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
  • Lubricants (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
ZA725036A 1971-07-22 1972-07-21 Process for the preparation of fluorocarbon waxes ZA725036B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19712136639 DE2136639C3 (de) 1971-07-22 Verfahren zur Herstellung von Fluorcarbonwachsen

Publications (1)

Publication Number Publication Date
ZA725036B true ZA725036B (en) 1973-05-30

Family

ID=5814445

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA725036A ZA725036B (en) 1971-07-22 1972-07-21 Process for the preparation of fluorocarbon waxes

Country Status (15)

Country Link
US (1) US3813449A (fi)
JP (1) JPS5143080B1 (fi)
AU (1) AU465629B2 (fi)
BE (1) BE786649R (fi)
BR (1) BR7204826D0 (fi)
CA (1) CA965900A (fi)
CH (1) CH560232A5 (fi)
ES (1) ES404938A1 (fi)
FI (1) FI55347C (fi)
FR (1) FR2146476B2 (fi)
GB (1) GB1400179A (fi)
IL (1) IL39946A (fi)
IT (1) IT1017513B (fi)
SE (1) SE394439B (fi)
ZA (1) ZA725036B (fi)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1191635B (it) * 1984-11-14 1988-03-23 Central Glass Co Ltd Procedimento di conversione di un polimero elevato contenente fluoro in un polimeto a peso molecolare inferiore
US7176265B2 (en) * 2002-11-22 2007-02-13 E. I. Du Pont De Nemours And Company Directly polymerized low molecular weight granular polytetrafluoroethylene
TWI492978B (zh) 2013-07-24 2015-07-21 Grand Tek Advance Material Science Co Ltd 複合材料微粉、陶瓷塗料、保護塗層、與複合材料微粉的形成方法
RU2559891C1 (ru) * 2014-05-29 2015-08-20 Федеральное государственное унитарное предприятие "Российский научный центр "Прикладная химия" Способ переработки политетрафторэтилена
WO2021053628A1 (en) * 2019-09-19 2021-03-25 Gujarat Fluorochemicals Limited An extrusion process for preparing a low molecular weight polytetrafluoroethylene micropowder
KR20230015961A (ko) * 2020-05-26 2023-01-31 제우스 컴퍼니 인크. 열기계적으로 열화된 ptfe로부터의 마이크로입자

Also Published As

Publication number Publication date
US3813449A (en) 1974-05-28
FR2146476B2 (fi) 1976-10-29
BR7204826D0 (pt) 1973-06-28
AU4474672A (en) 1974-01-24
AU465629B2 (en) 1975-10-02
ES404938A1 (es) 1975-06-16
IT1017513B (it) 1977-08-10
GB1400179A (en) 1975-07-16
CA965900A (en) 1975-04-08
FI55347B (fi) 1979-03-30
DE2136639A1 (de) 1973-02-01
SE394439B (sv) 1977-06-27
IL39946A (en) 1975-08-31
IL39946A0 (en) 1972-09-28
CH560232A5 (fi) 1975-03-27
BE786649R (fr) 1973-01-24
DE2136639B2 (de) 1976-12-02
JPS5143080B1 (fi) 1976-11-19
FI55347C (fi) 1979-07-10
FR2146476A2 (fi) 1973-03-02

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