SE394439B - Forfarande for framstellning av fluorkarbonvaxer genom termisk spjelkning av polytetrafluoreten eller sampolymerisat av tetrafluoreten med perfluorolefiner, varvid pyrolysen genomfores under extra inverkan av... - Google Patents
Forfarande for framstellning av fluorkarbonvaxer genom termisk spjelkning av polytetrafluoreten eller sampolymerisat av tetrafluoreten med perfluorolefiner, varvid pyrolysen genomfores under extra inverkan av...Info
- Publication number
- SE394439B SE394439B SE7209597A SE959772A SE394439B SE 394439 B SE394439 B SE 394439B SE 7209597 A SE7209597 A SE 7209597A SE 959772 A SE959772 A SE 959772A SE 394439 B SE394439 B SE 394439B
- Authority
- SE
- Sweden
- Prior art keywords
- tetrafluoretene
- polytetrafluorete
- perfluorolefins
- fluorcarbon
- pyrolysis
- Prior art date
Links
- 238000007334 copolymerization reaction Methods 0.000 title 1
- 238000004519 manufacturing process Methods 0.000 title 1
- 238000000034 method Methods 0.000 title 1
- 238000000197 pyrolysis Methods 0.000 title 1
- 239000001993 wax Substances 0.000 title 1
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
- C08F8/00—Chemical modification by after-treatment
- C08F8/50—Partial depolymerisation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/92—Measuring, controlling or regulating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/92514—Pressure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/92704—Temperature
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/022—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the choice of material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/78—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling
- B29C48/80—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling at the plasticising zone, e.g. by heating cylinders
- B29C48/802—Heating
-
- 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
- C08F2810/00—Chemical modification of a polymer
- C08F2810/10—Chemical modification of a polymer including a reactive processing step which leads, inter alia, to morphological and/or rheological modifications, e.g. visbreaking
Landscapes
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
- Lubricants (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19712136639 DE2136639C3 (de) | 1971-07-22 | Verfahren zur Herstellung von Fluorcarbonwachsen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SE394439B true SE394439B (sv) | 1977-06-27 |
Family
ID=5814445
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SE7209597A SE394439B (sv) | 1971-07-22 | 1972-07-21 | Forfarande for framstellning av fluorkarbonvaxer genom termisk spjelkning av polytetrafluoreten eller sampolymerisat av tetrafluoreten med perfluorolefiner, varvid pyrolysen genomfores under extra inverkan av... |
Country Status (15)
| Country | Link |
|---|---|
| US (1) | US3813449A (xx) |
| JP (1) | JPS5143080B1 (xx) |
| AU (1) | AU465629B2 (xx) |
| BE (1) | BE786649R (xx) |
| BR (1) | BR7204826D0 (xx) |
| CA (1) | CA965900A (xx) |
| CH (1) | CH560232A5 (xx) |
| ES (1) | ES404938A1 (xx) |
| FI (1) | FI55347C (xx) |
| FR (1) | FR2146476B2 (xx) |
| GB (1) | GB1400179A (xx) |
| IL (1) | IL39946A (xx) |
| IT (1) | IT1017513B (xx) |
| SE (1) | SE394439B (xx) |
| ZA (1) | ZA725036B (xx) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT1191635B (it) * | 1984-11-14 | 1988-03-23 | Central Glass Co Ltd | Procedimento di conversione di un polimero elevato contenente fluoro in un polimeto a peso molecolare inferiore |
| US7176265B2 (en) * | 2002-11-22 | 2007-02-13 | E. I. Du Pont De Nemours And Company | Directly polymerized low molecular weight granular polytetrafluoroethylene |
| TWI492978B (zh) | 2013-07-24 | 2015-07-21 | Grand Tek Advance Material Science Co Ltd | 複合材料微粉、陶瓷塗料、保護塗層、與複合材料微粉的形成方法 |
| RU2559891C1 (ru) * | 2014-05-29 | 2015-08-20 | Федеральное государственное унитарное предприятие "Российский научный центр "Прикладная химия" | Способ переработки политетрафторэтилена |
| WO2021053628A1 (en) * | 2019-09-19 | 2021-03-25 | Gujarat Fluorochemicals Limited | An extrusion process for preparing a low molecular weight polytetrafluoroethylene micropowder |
| KR20230015961A (ko) * | 2020-05-26 | 2023-01-31 | 제우스 컴퍼니 인크. | 열기계적으로 열화된 ptfe로부터의 마이크로입자 |
-
1972
- 1972-07-15 ES ES404938A patent/ES404938A1/es not_active Expired
- 1972-07-19 CH CH1079272A patent/CH560232A5/xx not_active IP Right Cessation
- 1972-07-19 IL IL39946A patent/IL39946A/xx unknown
- 1972-07-19 CA CA147,436A patent/CA965900A/en not_active Expired
- 1972-07-20 AU AU44746/72A patent/AU465629B2/en not_active Expired
- 1972-07-20 GB GB3396472A patent/GB1400179A/en not_active Expired
- 1972-07-20 BR BR4826/72A patent/BR7204826D0/pt unknown
- 1972-07-20 US US00273508A patent/US3813449A/en not_active Expired - Lifetime
- 1972-07-20 FI FI2063/72A patent/FI55347C/fi active
- 1972-07-20 JP JP47072177A patent/JPS5143080B1/ja active Pending
- 1972-07-20 IT IT27230/72A patent/IT1017513B/it active
- 1972-07-21 ZA ZA725036A patent/ZA725036B/xx unknown
- 1972-07-21 SE SE7209597A patent/SE394439B/xx unknown
- 1972-07-21 FR FR7226395A patent/FR2146476B2/fr not_active Expired
- 1972-07-24 BE BE786649A patent/BE786649R/xx active
Also Published As
| Publication number | Publication date |
|---|---|
| US3813449A (en) | 1974-05-28 |
| FR2146476B2 (xx) | 1976-10-29 |
| BR7204826D0 (pt) | 1973-06-28 |
| AU4474672A (en) | 1974-01-24 |
| AU465629B2 (en) | 1975-10-02 |
| ES404938A1 (es) | 1975-06-16 |
| IT1017513B (it) | 1977-08-10 |
| GB1400179A (en) | 1975-07-16 |
| ZA725036B (en) | 1973-05-30 |
| CA965900A (en) | 1975-04-08 |
| FI55347B (fi) | 1979-03-30 |
| DE2136639A1 (de) | 1973-02-01 |
| IL39946A (en) | 1975-08-31 |
| IL39946A0 (en) | 1972-09-28 |
| CH560232A5 (xx) | 1975-03-27 |
| BE786649R (fr) | 1973-01-24 |
| DE2136639B2 (de) | 1976-12-02 |
| JPS5143080B1 (xx) | 1976-11-19 |
| FI55347C (fi) | 1979-07-10 |
| FR2146476A2 (xx) | 1973-03-02 |
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