ES451888A1 - Process for the manufacture of paste-extrudable polymers of tetrafluorethylene - Google Patents
Process for the manufacture of paste-extrudable polymers of tetrafluorethyleneInfo
- Publication number
- ES451888A1 ES451888A1 ES451888A ES451888A ES451888A1 ES 451888 A1 ES451888 A1 ES 451888A1 ES 451888 A ES451888 A ES 451888A ES 451888 A ES451888 A ES 451888A ES 451888 A1 ES451888 A1 ES 451888A1
- Authority
- ES
- Spain
- Prior art keywords
- tetrafluoroethylene
- polytetrafluoroethylene
- polymerization
- formula
- weight
- 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
Links
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 title abstract 6
- 238000000034 method Methods 0.000 title abstract 2
- 229920000642 polymer Polymers 0.000 title abstract 2
- 238000004519 manufacturing process Methods 0.000 title 1
- QYKIQEUNHZKYBP-UHFFFAOYSA-N Vinyl ether Chemical class C=COC=C QYKIQEUNHZKYBP-UHFFFAOYSA-N 0.000 abstract 2
- 239000006185 dispersion Substances 0.000 abstract 2
- 238000006116 polymerization reaction Methods 0.000 abstract 2
- -1 polytetrafluoroethylene Polymers 0.000 abstract 2
- 239000003146 anticoagulant agent Substances 0.000 abstract 1
- 229940127219 anticoagulant drug Drugs 0.000 abstract 1
- 239000003054 catalyst Substances 0.000 abstract 1
- 239000003795 chemical substances by application Substances 0.000 abstract 1
- 230000015271 coagulation Effects 0.000 abstract 1
- 238000005345 coagulation Methods 0.000 abstract 1
- 150000001875 compounds Chemical class 0.000 abstract 1
- 229920001577 copolymer Polymers 0.000 abstract 1
- 238000001035 drying Methods 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
- 238000010899 nucleation Methods 0.000 abstract 1
- 239000002245 particle Substances 0.000 abstract 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 abstract 1
- 239000004810 polytetrafluoroethylene Substances 0.000 abstract 1
- 238000002360 preparation method Methods 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
- H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
- H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
- H01B3/44—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins
- H01B3/443—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins from vinylhalogenides or other halogenoethylenic compounds
- H01B3/445—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins from vinylhalogenides or other halogenoethylenic compounds from vinylfluorides or other fluoroethylenic compounds
-
- 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
- C08F214/00—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
- C08F214/18—Monomers containing fluorine
- C08F214/26—Tetrafluoroethene
- C08F214/262—Tetrafluoroethene with fluorinated vinyl ethers
-
- 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
- C08F259/00—Macromolecular compounds obtained by polymerising monomers on to polymers of halogen containing monomers as defined in group C08F14/00
- C08F259/08—Macromolecular compounds obtained by polymerising monomers on to polymers of halogen containing monomers as defined in group C08F14/00 on to polymers containing fluorine
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
- Polymerisation Methods In General (AREA)
Abstract
Process for the preparation of extrudable tetrafluoroethylene polymers in the form of pastes, by polymerization of tetrafluoroethylene in the presence of customary catalysts, dispersing and modifying agents and, optionally, anticoagulants, and also possibly by preparing an aqueous seed dispersion, consisting of dispersed particles, beforehand. Of polytetrafluoroethylene or of a copolymer based on tetrafluoroethylene and a fluorolefin compound and containing at least 90% by weight of polytetrafluoroethylene units, as well as by subsequent coagulation and drying, characterized in that the polymerization of tetrafluoroethylene is carried out in the presence of, 0005 to 1.5% by weight (relative to the tetrafluoroethylene used, without taking into account any previous dispersion of seeding) of a perfluorinated vinyl ether of the formula ** (formula) ** where N-0 to 4, or of a mixture of these perfluorinated vinyl ethers, as ag modifying entity (Machine-translation by Google Translate, not legally binding)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2544040A DE2544040C2 (en) | 1975-10-02 | 1975-10-02 | Process for the production of modified tetrafluoroethylene dispersion polymers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ES451888A1 true ES451888A1 (en) | 1978-03-16 |
Family
ID=5958095
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES451888A Expired ES451888A1 (en) | 1975-10-02 | 1976-09-25 | Process for the manufacture of paste-extrudable polymers of tetrafluorethylene |
Country Status (20)
| Country | Link |
|---|---|
| JP (1) | JPS607646B2 (en) |
| AT (1) | AT347126B (en) |
| AU (1) | AU1831976A (en) |
| BE (1) | BE846927A (en) |
| CA (1) | CA1094745A (en) |
| CH (1) | CH631465A5 (en) |
| DD (1) | DD126562A5 (en) |
| DE (1) | DE2544040C2 (en) |
| DK (1) | DK444376A (en) |
| ES (1) | ES451888A1 (en) |
| FR (1) | FR2326434A1 (en) |
| GB (1) | GB1558976A (en) |
| IN (1) | IN145130B (en) |
| IT (1) | IT1070581B (en) |
| LU (1) | LU75915A1 (en) |
| MX (1) | MX142853A (en) |
| NL (1) | NL7610689A (en) |
| SE (1) | SE412399B (en) |
| YU (1) | YU239376A (en) |
| ZA (1) | ZA765891B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2623090A1 (en) * | 1976-05-22 | 1977-12-08 | Hoechst Ag | PROCESS FOR PRODUCING PERFLUORALPHA (3,6-DIMETHYL-1,4-DIOXANYL-2-OXY) -PROPIONIC ACID FLUORIDE |
| JPS63190816A (en) * | 1986-09-05 | 1988-08-08 | Taiyo Koryo Kk | Growth inhibitor for cariogenic bacteria |
| JP2693822B2 (en) * | 1988-08-08 | 1997-12-24 | 花王株式会社 | Method for producing fluororesin aqueous dispersion |
| DE4424466A1 (en) * | 1994-07-12 | 1996-01-18 | Hoechst Ag | Tetrafluoroethylene-ethylene copolymer with a core-shell particle structure |
| RU2478654C2 (en) | 2008-04-14 | 2013-04-10 | Асахи Гласс Компани, Лимитед | Method of producing fine polytetrafluorethylene powder |
| JP5732850B2 (en) | 2008-05-21 | 2015-06-10 | 旭硝子株式会社 | Method for producing polytetrafluoroethylene fine powder |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1529958A (en) * | 1966-05-25 | 1968-06-21 | Du Pont | Modified Granular Polytetrafluoroethylene Molding Powders |
| DE1795078C3 (en) * | 1968-08-07 | 1974-12-19 | Farbwerke Hoechst Ag, Vormals Meister Lucius & Bruening, 6000 Frankfurt | Aqueous polytetrafluoroethylene dispersions, process for their preparation and their use |
| ES448136A1 (en) * | 1975-05-28 | 1977-11-01 | Hoechst Ag | Process for the manufacture of suspension polymers of tetrafluoroethylene |
-
1975
- 1975-10-02 DE DE2544040A patent/DE2544040C2/en not_active Expired
-
1976
- 1976-09-25 ES ES451888A patent/ES451888A1/en not_active Expired
- 1976-09-27 NL NL7610689A patent/NL7610689A/en not_active Application Discontinuation
- 1976-09-29 IN IN1806/CAL/1976A patent/IN145130B/en unknown
- 1976-09-30 YU YU02393/76A patent/YU239376A/en unknown
- 1976-09-30 GB GB40614/76A patent/GB1558976A/en not_active Expired
- 1976-09-30 LU LU75915A patent/LU75915A1/xx unknown
- 1976-09-30 CH CH1238276A patent/CH631465A5/en not_active IP Right Cessation
- 1976-09-30 IT IT27867/76A patent/IT1070581B/en active
- 1976-09-30 SE SE7610834A patent/SE412399B/en unknown
- 1976-09-30 DD DD195066A patent/DD126562A5/xx unknown
- 1976-10-01 CA CA262,502A patent/CA1094745A/en not_active Expired
- 1976-10-01 MX MX166537A patent/MX142853A/en unknown
- 1976-10-01 AT AT731476A patent/AT347126B/en not_active IP Right Cessation
- 1976-10-01 JP JP51117376A patent/JPS607646B2/en not_active Expired
- 1976-10-01 DK DK444376A patent/DK444376A/en unknown
- 1976-10-01 AU AU18319/76A patent/AU1831976A/en not_active Expired
- 1976-10-01 ZA ZA765891A patent/ZA765891B/en unknown
- 1976-10-04 FR FR7629763A patent/FR2326434A1/en active Granted
- 1976-10-04 BE BE171226A patent/BE846927A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| DK444376A (en) | 1977-04-03 |
| ZA765891B (en) | 1977-10-26 |
| IN145130B (en) | 1978-09-02 |
| SE412399B (en) | 1980-03-03 |
| JPS5243895A (en) | 1977-04-06 |
| NL7610689A (en) | 1977-04-05 |
| MX142853A (en) | 1981-01-05 |
| SE7610834L (en) | 1977-04-03 |
| YU239376A (en) | 1982-05-31 |
| DE2544040C2 (en) | 1981-09-24 |
| FR2326434B1 (en) | 1980-07-18 |
| LU75915A1 (en) | 1977-05-11 |
| GB1558976A (en) | 1980-01-09 |
| DD126562A5 (en) | 1977-07-27 |
| AU1831976A (en) | 1978-04-06 |
| AT347126B (en) | 1978-12-11 |
| CA1094745A (en) | 1981-01-27 |
| DE2544040A1 (en) | 1977-04-07 |
| ATA731476A (en) | 1978-04-15 |
| JPS607646B2 (en) | 1985-02-26 |
| FR2326434A1 (en) | 1977-04-29 |
| IT1070581B (en) | 1985-03-29 |
| CH631465A5 (en) | 1982-08-13 |
| BE846927A (en) | 1977-04-04 |
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