GB1361341A - Method for the depolymerisation of polytetrafluoroethylene - Google Patents

Method for the depolymerisation of polytetrafluoroethylene

Info

Publication number
GB1361341A
GB1361341A GB61872A GB61872A GB1361341A GB 1361341 A GB1361341 A GB 1361341A GB 61872 A GB61872 A GB 61872A GB 61872 A GB61872 A GB 61872A GB 1361341 A GB1361341 A GB 1361341A
Authority
GB
United Kingdom
Prior art keywords
tetrafluorethylene
steam
polymer
depolymerisation
polytetrafluoroethylene
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
GB61872A
Other languages
English (en)
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.)
Liquid Nitrogen Processing Corp
Original Assignee
Liquid Nitrogen Processing Corp
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 Corp filed Critical Liquid Nitrogen Processing Corp
Publication of GB1361341A publication Critical patent/GB1361341A/en
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

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)
GB61872A 1971-02-02 1972-01-06 Method for the depolymerisation of polytetrafluoroethylene Expired GB1361341A (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
GB1361341A true GB1361341A (en) 1974-07-24

Family

ID=22341390

Family Applications (1)

Application Number Title Priority Date Filing Date
GB61872A Expired GB1361341A (en) 1971-02-02 1972-01-06 Method for the depolymerisation of polytetrafluoroethylene

Country Status (6)

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

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 (de) * 1993-10-06 1995-04-13 Hoechst Ag Verfahren zur Herstellung von fluorierten Monomeren
RU2082709C1 (ru) * 1994-05-19 1997-06-27 Научно-внедренческая фирма "Поликом, Инк" Способ получения мономера пиролитическим разложением соответствующего полимера и установка для его осуществления
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 (ru) * 2011-06-16 2012-12-10 Государственное образовательное учреждение высшего профессионального образования "Национальный исследовательский Томский политехнический университет" Способ получения композиционного материала на основе политетрафторэтилена и диоксида кремния
RU2497846C1 (ru) * 2012-04-24 2013-11-10 Федеральное государственное бюджетное учреждение науки Байкальский институт природопользования Сибирского отделения Российской академии наук (БИП СО РАН) Способ утилизации отходов политетрафторэтилена
RU2656488C1 (ru) * 2017-05-03 2018-06-05 Общество с ограниченной ответственностью "Малое инновационное предприятие "Байкальский научный центр прочности" Способ утилизации отходов политетрафторэтилена
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 (de) * 1954-07-30 1957-03-07 Hoechst Ag Verfahren zur Herstellung von niedermolekularen Fluorchlorkohlenstoffen fluessiger oder wachsartiger Konsistenz
NL129846C (it) * 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 (de) 1972-08-17
FR2124212A1 (it) 1972-09-22
JPS5238525B1 (it) 1977-09-29
FR2124212B1 (it) 1973-11-23
US3832411A (en) 1974-08-27
DE2204141B2 (de) 1974-05-30
IT948929B (it) 1973-06-11

Similar Documents

Publication Publication Date Title
GB1361341A (en) Method for the depolymerisation of polytetrafluoroethylene
GB1277609A (en) Microwave vibrating resonating cavity and drying process
ES375773A1 (es) Procedimiento para la preparacion continua de poliamidas y poliesteres por polimerizacion de los correspondientes mono-meros o de sus condensados previos.
FI822928A0 (fi) Foerfarande foer framstaellning av en matprodukt
CA966648A (en) Process for the treatment of amorphous carbon or graphite manufactured articles, for the purpose of improving their resistance to oxidation, solutions suitable for attaining such purpose and resulting product
GB841263A (en) Process for polymerizing lower olefines in a continuous manner
GB1340099A (en) Process for producing carbon fibres and fibres produced by the process
CH549606A (fr) Procede de polymerisation en masse de l'ethylene, de ses derives substitues et de ses homologues.
ES332975A1 (es) Un procedimiento para la preparacion de productos de polimerizacion solidos, de peso molecular elevado.
SE8008718L (sv) Sett att framstella pulverformiga etenpolymerisat
CA972098A (en) High molecular weight and low viscosity vinylpyrrolidone polymer flocculants and catalyst and process
ES404938A1 (es) Procedimiento para la obtencion de ceras fluorocarbonadas.
GB1050453A (it)
ES406331A1 (es) Un procedimiento de polimerizacion de etileno.
KR880006296A (ko) 성질이 개선된 폴리아미드 물건 및 그 제조방법
GB965253A (en) Process of producing polyethylene
GB1340676A (en) Containers
KR830006172A (ko) 2,6-디클로로-4-니트로아닐린의 제조방법
SE7415805L (it)
GB1359792A (en) Heating and warming appliances such as hot water bottles
GB1225599A (it)
ES377293A1 (es) Un procedimiento para para la polimerizacion continua en masa de una beta-lastona.
ES351908A3 (es) Procedimiento de preparacion de poli (tereftalato de etile-no) de peso molecular elevado.
GB866821A (en) Improvements in the treatment of polyethylene
JPS5217236A (en) Method and apparatus for micro-wave heating

Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees