BR9204642A - Processo para a preparacao de dispersoes coloidais de polimeros de tetrafluoretileno e uso de 1,1,1,2-tetrafluoretano - Google Patents

Processo para a preparacao de dispersoes coloidais de polimeros de tetrafluoretileno e uso de 1,1,1,2-tetrafluoretano

Info

Publication number
BR9204642A
BR9204642A BR9204642A BR9204642A BR9204642A BR 9204642 A BR9204642 A BR 9204642A BR 9204642 A BR9204642 A BR 9204642A BR 9204642 A BR9204642 A BR 9204642A BR 9204642 A BR9204642 A BR 9204642A
Authority
BR
Brazil
Prior art keywords
tetrafluorethane
preparation
colloidal dispersions
tetrafluorethylene
polymers
Prior art date
Application number
BR9204642A
Other languages
English (en)
Inventor
Ludwig Dr Mayer
Gernot Dr Loehr
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 BR9204642A publication Critical patent/BR9204642A/pt

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
    • C08F14/00—Homopolymers and 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
    • C08F14/18—Monomers containing fluorine
    • C08F14/26—Tetrafluoroethene

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Polymerisation Methods In General (AREA)
  • Polymerization Catalysts (AREA)
BR9204642A 1991-12-02 1992-12-01 Processo para a preparacao de dispersoes coloidais de polimeros de tetrafluoretileno e uso de 1,1,1,2-tetrafluoretano BR9204642A (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE4139665A DE4139665A1 (de) 1991-12-02 1991-12-02 Verfahren zur herstellung von polymerisaten des tetrafluorethylens

Publications (1)

Publication Number Publication Date
BR9204642A true BR9204642A (pt) 1993-06-08

Family

ID=6446065

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9204642A BR9204642A (pt) 1991-12-02 1992-12-01 Processo para a preparacao de dispersoes coloidais de polimeros de tetrafluoretileno e uso de 1,1,1,2-tetrafluoretano

Country Status (6)

Country Link
US (1) US5276261A (pt)
EP (1) EP0545173B1 (pt)
JP (1) JP3389272B2 (pt)
BR (1) BR9204642A (pt)
DE (2) DE4139665A1 (pt)
HK (1) HK1007562A1 (pt)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5504170A (en) * 1993-08-27 1996-04-02 W. L. Gore & Associates, Inc. Aqueous microemulsion polymerization of tetrafluoroethylene
IT1271422B (it) * 1993-10-15 1997-05-28 Ausimont Spa Procedimento per la preparazione di copolimeri del tetrafluoroetilene con altri monomeri perfluorurati
IT1265223B1 (it) * 1993-11-25 1996-10-31 Ausimont Spa Processo per la preparazione di polimeri del vinilidenfluoruro
WO1996022315A1 (en) * 1995-01-18 1996-07-25 W.L. Gore & Associates, Inc. Microemulsion polymerization systems for fluoromonomers
US6046271A (en) * 1995-01-18 2000-04-04 W. L. Gore & Associates, Inc. Microemulsion polymerization systems for the production of small melt-processible fluoropolymer particles
US7020111B2 (en) * 1996-06-27 2006-03-28 Interdigital Technology Corporation System for using rapid acquisition spreading codes for spread-spectrum communications
ZA965340B (en) * 1995-06-30 1997-01-27 Interdigital Tech Corp Code division multiple access (cdma) communication system
US7123600B2 (en) * 1995-06-30 2006-10-17 Interdigital Technology Corporation Initial power control for spread-spectrum communications
US6885652B1 (en) * 1995-06-30 2005-04-26 Interdigital Technology Corporation Code division multiple access (CDMA) communication system
US7929498B2 (en) * 1995-06-30 2011-04-19 Interdigital Technology Corporation Adaptive forward power control and adaptive reverse power control for spread-spectrum communications
US5756620A (en) * 1995-11-15 1998-05-26 E. I. Du Pont De Nemours And Company Tetrafluoroethylene polymer for improved paste extrusion
KR100232401B1 (ko) * 1996-12-24 1999-12-01 손욱 소수성 조성물 및 소수성 극판의 제조 방법
US20020051434A1 (en) * 1997-10-23 2002-05-02 Ozluturk Fatih M. Method for using rapid acquisition spreading codes for spread-spectrum communications
US9118387B2 (en) 1997-11-03 2015-08-25 Qualcomm Incorporated Pilot reference transmission for a wireless communication system
US7184426B2 (en) 2002-12-12 2007-02-27 Qualcomm, Incorporated Method and apparatus for burst pilot for a time division multiplex system
US8064409B1 (en) 1999-08-25 2011-11-22 Qualcomm Incorporated Method and apparatus using a multi-carrier forward link in a wireless communication system
US6621804B1 (en) * 1999-10-07 2003-09-16 Qualcomm Incorporated Method and apparatus for predicting favored supplemental channel transmission slots using transmission power measurements of a fundamental channel
US6973098B1 (en) * 2000-10-25 2005-12-06 Qualcomm, Incorporated Method and apparatus for determining a data rate in a high rate packet data wireless communications system
US7068683B1 (en) 2000-10-25 2006-06-27 Qualcomm, Incorporated Method and apparatus for high rate packet data and low delay data transmissions
US7253240B2 (en) * 2000-11-30 2007-08-07 3M Innovative Properties Company Explosion-free process for the production of polytetrafluoroethylene
US7129753B2 (en) * 2004-05-26 2006-10-31 Infineon Technologies Ag Chip to chip interface
CN101511887B (zh) 2006-09-11 2010-12-22 旭硝子株式会社 可熔融成形的四氟乙烯共聚物的制造方法
US8811200B2 (en) * 2009-09-22 2014-08-19 Qualcomm Incorporated Physical layer metrics to support adaptive station-dependent channel state information feedback rate in multi-user communication systems

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA630402A (en) * 1961-11-07 C. Brinker Keith Process for polymerizing tetrafluoroethylene
US2534698A (en) * 1944-11-29 1950-12-19 Standard Oil Dev Co Polymerization of olefins in fluorinated diluent
BE475854A (pt) * 1946-09-05
US2593582A (en) * 1950-06-30 1952-04-22 Du Pont Process for producing tetrafluoroethylene polymer compositions
US2662065A (en) * 1951-05-10 1953-12-08 Du Pont Process for obtaining dispersions of polyfluorethylenes
US2881142A (en) * 1954-09-08 1959-04-07 Du Pont Polytetrafluoroethylene aqueous paste and process for shaping same
US2965595A (en) * 1955-12-05 1960-12-20 Du Pont Process for polymerizing tetrafluoroethylene in the presence of polymerstabilizing agents
US3012996A (en) * 1958-04-02 1961-12-12 Du Pont Process for polymerizing alpha-olefins to high polymers
US3105824A (en) * 1960-05-03 1963-10-01 Du Pont Aqueous fluorocarbon telomer dispersion and process of preparing same
US3434996A (en) * 1967-07-10 1969-03-25 Allied Chem Polytetrafluoroethylene extrusion compositions and extrusion process
US3635926A (en) * 1969-10-27 1972-01-18 Du Pont Aqueous process for making improved tetrafluoroethylene / fluoroalkyl perfluorovinyl ether copolymers
US4052278A (en) * 1970-02-03 1977-10-04 Imperial Chemical Industries Limited Finely divided, irradiated tetrafluorethylene polymers
US4025481A (en) * 1971-01-28 1977-05-24 Produits Chimiques Ugine Kuhlmann Method for the preparation of aqueous dispersions of polytetrafluoroethylene with halogenated hydrocarbon as stabilizing agent
JPS5548908B2 (pt) * 1972-05-15 1980-12-09
JPS5141085A (ja) * 1974-10-05 1976-04-06 Daikin Ind Ltd Tetorafuruoruechirenwatsukusuno seizoho
US4186121A (en) * 1978-06-19 1980-01-29 E. I. Du Pont De Nemours & Company Process for obtaining colloidal dispersion of polymeric tetrafluoroethylene

Also Published As

Publication number Publication date
US5276261A (en) 1994-01-04
HK1007562A1 (en) 1999-04-16
JP3389272B2 (ja) 2003-03-24
EP0545173A1 (de) 1993-06-09
JPH05320253A (ja) 1993-12-03
EP0545173B1 (de) 1996-03-06
DE4139665A1 (de) 1993-06-03
DE59205580D1 (de) 1996-04-11

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Legal Events

Date Code Title Description
FA1 Application withdrawn (art. 18(2))