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-tetrafluoretanoInfo
- 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
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)
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)
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)
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 |
-
1991
- 1991-12-02 DE DE4139665A patent/DE4139665A1/de not_active Withdrawn
-
1992
- 1992-11-20 DE DE59205580T patent/DE59205580D1/de not_active Expired - Fee Related
- 1992-11-20 EP EP92119786A patent/EP0545173B1/de not_active Expired - Lifetime
- 1992-11-30 US US07/982,873 patent/US5276261A/en not_active Expired - Lifetime
- 1992-12-01 BR BR9204642A patent/BR9204642A/pt not_active Application Discontinuation
- 1992-12-01 JP JP32208892A patent/JP3389272B2/ja not_active Expired - Fee Related
-
1998
- 1998-06-25 HK HK98106713A patent/HK1007562A1/xx not_active IP Right Cessation
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)) |