FR921691A - Procédé de dépolymérisation du tétrafluoréthylène polymérisé - Google Patents

Procédé de dépolymérisation du tétrafluoréthylène polymérisé

Info

Publication number
FR921691A
FR921691A FR921691DA FR921691A FR 921691 A FR921691 A FR 921691A FR 921691D A FR921691D A FR 921691DA FR 921691 A FR921691 A FR 921691A
Authority
FR
France
Prior art keywords
depolymerizing
polymerized tetrafluoroethylene
tetrafluoroethylene
polymerized
depolymerizing polymerized
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.)
Expired
Application number
Other languages
English (en)
French (fr)
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.)
EIDP Inc
Original Assignee
EI Du Pont de Nemours and Co
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 EI Du Pont de Nemours and Co filed Critical EI Du Pont de Nemours and Co
Application granted granted Critical
Publication of FR921691A publication Critical patent/FR921691A/fr
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C17/00—Preparation of halogenated hydrocarbons
    • C07C17/361—Preparation of halogenated hydrocarbons by reactions involving a decrease in the number of carbon atoms
    • C07C17/367—Preparation of halogenated hydrocarbons by reactions involving a decrease in the number of carbon atoms by depolymerisation
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
FR921691D 1944-06-23 1946-01-24 Procédé de dépolymérisation du tétrafluoréthylène polymérisé Expired FR921691A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US541821A US2406153A (en) 1944-06-23 1944-06-23 Depolymerization of polymeric tetrafluoroethylene

Publications (1)

Publication Number Publication Date
FR921691A true FR921691A (fr) 1947-05-14

Family

ID=24161211

Family Applications (1)

Application Number Title Priority Date Filing Date
FR921691D Expired FR921691A (fr) 1944-06-23 1946-01-24 Procédé de dépolymérisation du tétrafluoréthylène polymérisé

Country Status (4)

Country Link
US (1) US2406153A (en:Method)
BE (1) BE463350A (en:Method)
FR (1) FR921691A (en:Method)
GB (1) GB593997A (en:Method)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2496978A (en) * 1946-06-10 1950-02-07 Du Pont Polytetrafluoroethylene waxes having a sharp melting point
US2664449A (en) * 1947-01-06 1953-12-29 William T Miller Pyrolysis of trifluorochloroethylene polymers
US2543530A (en) * 1947-05-02 1951-02-27 American Cyanamid Co Treatment of polymeric chlorotrifluoroethylene
US2729613A (en) * 1951-02-19 1956-01-03 William T Miller Solid polymers of perhalogenated polyolefins
US2617836A (en) * 1951-04-18 1952-11-11 Minnesota Mining & Mfg Production of olefinic c4f8
US2674631A (en) * 1951-08-03 1954-04-06 Allied Chem & Dye Corp Production of unsaturated fluorine compounds
US2759983A (en) * 1954-05-06 1956-08-21 Du Pont Pyrolysis process for preparing hexafluoropropene from tetrafluoroethylene polymer
US2773089A (en) * 1954-10-29 1956-12-04 Du Pont Fluorinated olefinic nitriles
US3832411A (en) * 1971-02-02 1974-08-27 Liquid Nitrogen Processing Method for the depolymerization of polytetrafluoroethylene
DE4334015A1 (de) * 1993-10-06 1995-04-13 Hoechst Ag Verfahren zur Herstellung von fluorierten Monomeren
RU2414292C2 (ru) * 2006-12-12 2011-03-20 Ооо "Нпк "Катюша" Способ инкапсуляции гранул углеродных сорбентов пленкой фторопласта
RU2387632C2 (ru) * 2008-07-14 2010-04-27 Общество с ограниченной ответственностью "Завод полимеров Кирово-Чепецкого химического комбината" (ООО "Завод полимеров КЧХК") Способ переработки отходов политетрафторэтилена
AU2021101230A4 (en) * 2021-03-01 2021-05-06 PRTI Global Management, LLC Apparatus and method for thermally demanufacturing tires and other waste products

Also Published As

Publication number Publication date
GB593997A (en) 1947-10-30
BE463350A (en:Method) 1946-03-30
US2406153A (en) 1946-08-20

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