DE2502465C2 - Verfahren zur Herstellung gesinterter Partikel aus einem Tetrafluoräthylenpolymeren - Google Patents
Verfahren zur Herstellung gesinterter Partikel aus einem TetrafluoräthylenpolymerenInfo
- Publication number
- DE2502465C2 DE2502465C2 DE19752502465 DE2502465A DE2502465C2 DE 2502465 C2 DE2502465 C2 DE 2502465C2 DE 19752502465 DE19752502465 DE 19752502465 DE 2502465 A DE2502465 A DE 2502465A DE 2502465 C2 DE2502465 C2 DE 2502465C2
- Authority
- DE
- Germany
- Prior art keywords
- powder
- particles
- sintered
- polymer
- tetrafluoroethylene
- 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
- 239000002245 particle Substances 0.000 title claims description 83
- 229920000642 polymer Polymers 0.000 title claims description 41
- 238000000034 method Methods 0.000 title claims description 31
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 title claims description 21
- 238000004519 manufacturing process Methods 0.000 title claims description 3
- 239000000843 powder Substances 0.000 claims description 103
- 238000002844 melting Methods 0.000 claims description 20
- 230000008018 melting Effects 0.000 claims description 20
- 238000000889 atomisation Methods 0.000 claims 1
- 238000005245 sintering Methods 0.000 description 28
- 239000007789 gas Substances 0.000 description 23
- 229920001577 copolymer Polymers 0.000 description 16
- 229920005989 resin Polymers 0.000 description 16
- 239000011347 resin Substances 0.000 description 16
- -1 perfluoro Chemical group 0.000 description 15
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 13
- 239000004810 polytetrafluoroethylene Substances 0.000 description 13
- 238000002347 injection Methods 0.000 description 12
- 239000007924 injection Substances 0.000 description 12
- 239000006185 dispersion Substances 0.000 description 10
- 238000001816 cooling Methods 0.000 description 9
- 239000000155 melt Substances 0.000 description 8
- 230000004580 weight loss Effects 0.000 description 8
- 238000004455 differential thermal analysis Methods 0.000 description 7
- 230000005484 gravity Effects 0.000 description 7
- 239000000463 material Substances 0.000 description 7
- 239000011248 coating agent Substances 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 6
- 238000000576 coating method Methods 0.000 description 5
- 230000002028 premature Effects 0.000 description 5
- 239000011164 primary particle Substances 0.000 description 5
- 230000003068 static effect Effects 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 125000004432 carbon atom Chemical group C* 0.000 description 4
- 238000012674 dispersion polymerization Methods 0.000 description 4
- 238000001125 extrusion Methods 0.000 description 4
- 238000000227 grinding Methods 0.000 description 4
- BOSAWIQFTJIYIS-UHFFFAOYSA-N 1,1,1-trichloro-2,2,2-trifluoroethane Chemical compound FC(F)(F)C(Cl)(Cl)Cl BOSAWIQFTJIYIS-UHFFFAOYSA-N 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 3
- 150000001336 alkenes Chemical class 0.000 description 3
- 239000011261 inert gas Substances 0.000 description 3
- 229910017053 inorganic salt Inorganic materials 0.000 description 3
- 238000006116 polymerization reaction Methods 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- KHXKESCWFMPTFT-UHFFFAOYSA-N 1,1,1,2,2,3,3-heptafluoro-3-(1,2,2-trifluoroethenoxy)propane Chemical compound FC(F)=C(F)OC(F)(F)C(F)(F)C(F)(F)F KHXKESCWFMPTFT-UHFFFAOYSA-N 0.000 description 2
- VXNZUUAINFGPBY-UHFFFAOYSA-N 1-Butene Chemical compound CCC=C VXNZUUAINFGPBY-UHFFFAOYSA-N 0.000 description 2
- 239000007900 aqueous suspension Substances 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- HCDGVLDPFQMKDK-UHFFFAOYSA-N hexafluoropropylene Chemical group FC(F)=C(F)C(F)(F)F HCDGVLDPFQMKDK-UHFFFAOYSA-N 0.000 description 2
- 229920001519 homopolymer Polymers 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 239000003960 organic solvent Substances 0.000 description 2
- 239000006187 pill Substances 0.000 description 2
- 239000011163 secondary particle Substances 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 238000010557 suspension polymerization reaction Methods 0.000 description 2
- BLTXWCKMNMYXEA-UHFFFAOYSA-N 1,1,2-trifluoro-2-(trifluoromethoxy)ethene Chemical compound FC(F)=C(F)OC(F)(F)F BLTXWCKMNMYXEA-UHFFFAOYSA-N 0.000 description 1
- DAVCAHWKKDIRLY-UHFFFAOYSA-N 1-ethenoxy-1,1,2,2,3,3,3-heptafluoropropane Chemical group FC(F)(F)C(F)(F)C(F)(F)OC=C DAVCAHWKKDIRLY-UHFFFAOYSA-N 0.000 description 1
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- XSTXAVWGXDQKEL-UHFFFAOYSA-N Trichloroethylene Chemical group ClC=C(Cl)Cl XSTXAVWGXDQKEL-UHFFFAOYSA-N 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000010425 asbestos Substances 0.000 description 1
- 235000011089 carbon dioxide Nutrition 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- UUAGAQFQZIEFAH-UHFFFAOYSA-N chlorotrifluoroethylene Chemical group FC(F)=C(F)Cl UUAGAQFQZIEFAH-UHFFFAOYSA-N 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000006082 mold release agent Substances 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000002952 polymeric resin Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 229910052895 riebeckite Inorganic materials 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 238000004227 thermal cracking Methods 0.000 description 1
- 239000003039 volatile agent Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/12—Powdering or granulating
- C08J3/122—Pulverisation by spraying
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2327/00—Characterised by the use of homopolymers or 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; Derivatives of such polymers
- C08J2327/02—Characterised by the use of homopolymers or 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; Derivatives of such polymers not modified by chemical after-treatment
- C08J2327/12—Characterised by the use of homopolymers or 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; Derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
- C08J2327/18—Homopolymers or copolymers of tetrafluoroethylene
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP897274A JPS5313228B2 (en, 2012) | 1974-01-22 | 1974-01-22 | |
| JP3387374A JPS5311296B2 (en, 2012) | 1974-03-28 | 1974-03-28 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE2502465A1 DE2502465A1 (de) | 1975-07-24 |
| DE2502465C2 true DE2502465C2 (de) | 1984-01-26 |
Family
ID=26343605
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19752502465 Expired DE2502465C2 (de) | 1974-01-22 | 1975-01-22 | Verfahren zur Herstellung gesinterter Partikel aus einem Tetrafluoräthylenpolymeren |
Country Status (6)
| Country | Link |
|---|---|
| CA (1) | CA1050717A (en, 2012) |
| DE (1) | DE2502465C2 (en, 2012) |
| FR (1) | FR2258257B1 (en, 2012) |
| GB (1) | GB1448429A (en, 2012) |
| IT (1) | IT1031071B (en, 2012) |
| NL (1) | NL7500647A (en, 2012) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4246390A (en) | 1980-04-21 | 1981-01-20 | American Hoechst Corporation | Molding powder of ultra-high molecular weight polyethylene and process for its preparation |
| US4742122A (en) * | 1985-10-25 | 1988-05-03 | E. I. Du Pont De Nemours And Company | Melt-processible tetrafluoroethylene/perfluoroolefin copolymers and processes for preparing them |
| US4675380A (en) * | 1985-10-25 | 1987-06-23 | E. I. Du Pont De Nemours And Company | Melt-processible tetrafluoroethylene/perfluoroolefin copolymer granules and processes for preparing them |
| EP2752440B1 (en) | 2011-08-29 | 2018-10-24 | Daikin Industries, Ltd. | Fluorine-containing polymer powder, film, and method for producing fluorine-containing polymer powder |
| EP3640281A1 (en) * | 2018-10-19 | 2020-04-22 | 3M Innovative Properties Company | Sprayable powder of fluoropolymer particles |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5032098B2 (en, 2012) * | 1972-08-09 | 1975-10-17 |
-
1975
- 1975-01-20 CA CA218,217A patent/CA1050717A/en not_active Expired
- 1975-01-20 NL NL7500647A patent/NL7500647A/xx not_active Application Discontinuation
- 1975-01-21 FR FR7501747A patent/FR2258257B1/fr not_active Expired
- 1975-01-21 IT IT1948475A patent/IT1031071B/it active
- 1975-01-22 GB GB285375A patent/GB1448429A/en not_active Expired
- 1975-01-22 DE DE19752502465 patent/DE2502465C2/de not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR2258257A1 (en, 2012) | 1975-08-18 |
| DE2502465A1 (de) | 1975-07-24 |
| IT1031071B (it) | 1979-04-30 |
| FR2258257B1 (en, 2012) | 1979-02-09 |
| CA1050717A (en) | 1979-03-20 |
| NL7500647A (nl) | 1975-07-24 |
| GB1448429A (en) | 1976-09-08 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 8110 | Request for examination paragraph 44 | ||
| 8128 | New person/name/address of the agent |
Representative=s name: ABITZ, W., DIPL.-ING.DR.-ING. MORF, D., DR., PAT.- |
|
| D2 | Grant after examination | ||
| 8364 | No opposition during term of opposition | ||
| 8339 | Ceased/non-payment of the annual fee |