IT948929B - PROCEDURE FOR THE DEPOLYMERIZATION OF POLYTETRAFLUOROETHYLENE - Google Patents

PROCEDURE FOR THE DEPOLYMERIZATION OF POLYTETRAFLUOROETHYLENE

Info

Publication number
IT948929B
IT948929B IT67211/72A IT6721172A IT948929B IT 948929 B IT948929 B IT 948929B IT 67211/72 A IT67211/72 A IT 67211/72A IT 6721172 A IT6721172 A IT 6721172A IT 948929 B IT948929 B IT 948929B
Authority
IT
Italy
Prior art keywords
depolymerization
polytetrafluoroethylene
procedure
Prior art date
Application number
IT67211/72A
Other languages
Italian (it)
Original Assignee
Liquid Nitrogen Processing
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 Liquid Nitrogen Processing filed Critical Liquid Nitrogen Processing
Application granted granted Critical
Publication of IT948929B publication Critical patent/IT948929B/en

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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
IT67211/72A 1971-02-02 1972-01-25 PROCEDURE FOR THE DEPOLYMERIZATION OF POLYTETRAFLUOROETHYLENE IT948929B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00111963A US3832411A (en) 1971-02-02 1971-02-02 Method for the depolymerization of polytetrafluoroethylene

Publications (1)

Publication Number Publication Date
IT948929B true IT948929B (en) 1973-06-11

Family

ID=22341390

Family Applications (1)

Application Number Title Priority Date Filing Date
IT67211/72A IT948929B (en) 1971-02-02 1972-01-25 PROCEDURE FOR THE DEPOLYMERIZATION OF POLYTETRAFLUOROETHYLENE

Country Status (6)

Country Link
US (1) US3832411A (en)
JP (1) JPS5238525B1 (en)
DE (1) DE2204141B2 (en)
FR (1) FR2124212B1 (en)
GB (1) GB1361341A (en)
IT (1) IT948929B (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4128589A (en) * 1977-06-22 1978-12-05 Hughes Aircraft Company Generation of CF4 from Teflon for reactive atmosphere processing and growth of metal fluorides
DE4334015A1 (en) * 1993-10-06 1995-04-13 Hoechst Ag Process for the preparation of fluorinated monomers
RU2082709C1 (en) * 1994-05-19 1997-06-27 Научно-внедренческая фирма "Поликом, Инк" Method and installation for producing monomer via pyrolytic decomposition of corresponding polymer
EP1481957B1 (en) * 2002-03-01 2008-01-16 Daikin Industries, Ltd. Process for producing fluoromonomer
US6919015B2 (en) * 2002-12-16 2005-07-19 3M Innovative Properties Company Process for manufacturing fluoroolefins
GB0817873D0 (en) * 2008-10-01 2008-11-05 3M Innovative Properties Co Process of making fluoroelefins by thermal decomposition of fluorinated materials
RU2469056C1 (en) * 2011-06-16 2012-12-10 Государственное образовательное учреждение высшего профессионального образования "Национальный исследовательский Томский политехнический университет" Method of producing composite material based on polytetrafluoroethylene and silicon dioxide
RU2497846C1 (en) * 2012-04-24 2013-11-10 Федеральное государственное бюджетное учреждение науки Байкальский институт природопользования Сибирского отделения Российской академии наук (БИП СО РАН) Method of recycling polytetrafluoroethylene wastes
RU2656488C1 (en) * 2017-05-03 2018-06-05 Общество с ограниченной ответственностью "Малое инновационное предприятие "Байкальский научный центр прочности" Method of recycling polytetrafluoroethylene wastes
EP4081498A1 (en) 2019-12-23 2022-11-02 3M Innovative Properties Company Process of making fluoroolefins by thermal decomposition of fluorinated ionomers

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2394581A (en) * 1943-10-04 1946-02-12 Kinetic Chemicals Inc Pyrolysis of tetrafluoroethylene polymer
US2406153A (en) * 1944-06-23 1946-08-20 Du Pont Depolymerization of polymeric tetrafluoroethylene
DE1003700B (en) * 1954-07-30 1957-03-07 Hoechst Ag Process for the production of low molecular weight chlorofluorocarbons with a liquid or waxy consistency
NL129846C (en) * 1962-01-24
GB1041591A (en) * 1962-02-21 1966-09-07 Daikin Ind Ltd Process for manufacturing tetrafluoroethylene

Also Published As

Publication number Publication date
DE2204141A1 (en) 1972-08-17
FR2124212A1 (en) 1972-09-22
JPS5238525B1 (en) 1977-09-29
FR2124212B1 (en) 1973-11-23
US3832411A (en) 1974-08-27
DE2204141B2 (en) 1974-05-30
GB1361341A (en) 1974-07-24

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