DE2620284C2 - Verfahren zur Herstellung modifizierter Polytetrafluoräthylene - Google Patents
Verfahren zur Herstellung modifizierter PolytetrafluoräthyleneInfo
- Publication number
- DE2620284C2 DE2620284C2 DE19762620284 DE2620284A DE2620284C2 DE 2620284 C2 DE2620284 C2 DE 2620284C2 DE 19762620284 DE19762620284 DE 19762620284 DE 2620284 A DE2620284 A DE 2620284A DE 2620284 C2 DE2620284 C2 DE 2620284C2
- Authority
- DE
- Germany
- Prior art keywords
- extrusion
- polymerization
- modifier
- weight
- polymer
- 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
- 229920001343 polytetrafluoroethylene Polymers 0.000 title claims description 45
- 239000004810 polytetrafluoroethylene Substances 0.000 title claims description 40
- 238000000034 method Methods 0.000 title claims description 35
- 230000008569 process Effects 0.000 title claims description 20
- 238000004519 manufacturing process Methods 0.000 title claims description 18
- -1 polytetrafluoroethylene Polymers 0.000 title claims description 15
- 229920000642 polymer Polymers 0.000 claims description 55
- 239000003607 modifier Substances 0.000 claims description 53
- 239000002245 particle Substances 0.000 claims description 43
- 229920001577 copolymer Polymers 0.000 claims description 40
- HCDGVLDPFQMKDK-UHFFFAOYSA-N hexafluoropropylene Chemical compound FC(F)=C(F)C(F)(F)F HCDGVLDPFQMKDK-UHFFFAOYSA-N 0.000 claims description 28
- UUAGAQFQZIEFAH-UHFFFAOYSA-N chlorotrifluoroethylene Chemical group FC(F)=C(F)Cl UUAGAQFQZIEFAH-UHFFFAOYSA-N 0.000 claims description 26
- 239000003795 chemical substances by application Substances 0.000 claims description 23
- 239000006185 dispersion Substances 0.000 claims description 21
- 239000000203 mixture Substances 0.000 claims description 14
- 239000002270 dispersing agent Substances 0.000 claims description 11
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 claims description 11
- 238000007334 copolymerization reaction Methods 0.000 claims description 10
- 239000003381 stabilizer Substances 0.000 claims description 10
- 239000003999 initiator Substances 0.000 claims description 6
- 230000000977 initiatory effect Effects 0.000 claims description 5
- 239000012736 aqueous medium Substances 0.000 claims description 4
- 230000005865 ionizing radiation Effects 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 3
- 238000004090 dissolution Methods 0.000 claims 1
- 238000001125 extrusion Methods 0.000 description 82
- 238000006116 polymerization reaction Methods 0.000 description 56
- 230000009467 reduction Effects 0.000 description 46
- 238000002474 experimental method Methods 0.000 description 19
- 239000000843 powder Substances 0.000 description 19
- 239000000047 product Substances 0.000 description 13
- 238000005245 sintering Methods 0.000 description 12
- 230000000052 comparative effect Effects 0.000 description 11
- 238000006243 chemical reaction Methods 0.000 description 10
- MKTOIPPVFPJEQO-UHFFFAOYSA-N 4-(3-carboxypropanoylperoxy)-4-oxobutanoic acid Chemical compound OC(=O)CCC(=O)OOC(=O)CCC(O)=O MKTOIPPVFPJEQO-UHFFFAOYSA-N 0.000 description 8
- 239000004160 Ammonium persulphate Substances 0.000 description 8
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium persulfate Chemical compound [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 description 8
- 235000019395 ammonium persulphate Nutrition 0.000 description 8
- 239000000839 emulsion Substances 0.000 description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- 229920001519 homopolymer Polymers 0.000 description 6
- 239000003505 polymerization initiator Substances 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 230000007423 decrease Effects 0.000 description 5
- 238000007720 emulsion polymerization reaction Methods 0.000 description 5
- 239000007789 gas Substances 0.000 description 5
- 239000000314 lubricant Substances 0.000 description 5
- 238000000465 moulding Methods 0.000 description 5
- 238000003756 stirring Methods 0.000 description 5
- 238000004566 IR spectroscopy Methods 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 4
- 229930195733 hydrocarbon Natural products 0.000 description 4
- 150000002430 hydrocarbons Chemical class 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000002609 medium Substances 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000010557 suspension polymerization reaction Methods 0.000 description 4
- 241001233037 catfish Species 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 239000012188 paraffin wax Substances 0.000 description 3
- 230000009257 reactivity Effects 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 238000009835 boiling Methods 0.000 description 2
- 238000004587 chromatography analysis Methods 0.000 description 2
- 230000001112 coagulating effect Effects 0.000 description 2
- 230000015271 coagulation Effects 0.000 description 2
- 238000005345 coagulation Methods 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000748 compression moulding Methods 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000004817 gas chromatography Methods 0.000 description 2
- 239000000178 monomer Substances 0.000 description 2
- 230000006911 nucleation Effects 0.000 description 2
- 238000010899 nucleation Methods 0.000 description 2
- 150000003254 radicals Chemical class 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 125000006414 CCl Chemical group ClC* 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- DWAQJAXMDSEUJJ-UHFFFAOYSA-M Sodium bisulfite Chemical compound [Na+].OS([O-])=O DWAQJAXMDSEUJJ-UHFFFAOYSA-M 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 150000003863 ammonium salts Chemical class 0.000 description 1
- 239000003945 anionic surfactant Substances 0.000 description 1
- 239000007900 aqueous suspension Substances 0.000 description 1
- YOALFLHFSFEMLP-UHFFFAOYSA-N azane;2,2,3,3,4,4,5,5,6,6,7,7,8,8,8-pentadecafluorooctanoic acid Chemical compound [NH4+].[O-]C(=O)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)F YOALFLHFSFEMLP-UHFFFAOYSA-N 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 230000001427 coherent effect Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000008367 deionised water Substances 0.000 description 1
- 229910021641 deionized water Inorganic materials 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 239000004815 dispersion polymer Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000009778 extrusion testing Methods 0.000 description 1
- 210000000416 exudates and transudate Anatomy 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000010528 free radical solution polymerization reaction Methods 0.000 description 1
- 238000007429 general method Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 1
- 229920013653 perfluoroalkoxyethylene Chemical class 0.000 description 1
- 125000005010 perfluoroalkyl group Chemical class 0.000 description 1
- SNGREZUHAYWORS-UHFFFAOYSA-N perfluorooctanoic acid Chemical compound OC(=O)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)F SNGREZUHAYWORS-UHFFFAOYSA-N 0.000 description 1
- 150000002978 peroxides Chemical class 0.000 description 1
- USHAGKDGDHPEEY-UHFFFAOYSA-L potassium persulfate Chemical compound [K+].[K+].[O-]S(=O)(=O)OOS([O-])(=O)=O USHAGKDGDHPEEY-UHFFFAOYSA-L 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 229930195734 saturated hydrocarbon Natural products 0.000 description 1
- 235000010267 sodium hydrogen sulphite Nutrition 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000012808 vapor phase Substances 0.000 description 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
- 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
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)
- Graft Or Block Polymers (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5643275A JPS51130494A (en) | 1975-05-08 | 1975-05-08 | Preparation of morified tetrafluoroethyelene |
| JP8260275A JPS525890A (en) | 1975-07-03 | 1975-07-03 | Process for preparing a modified tetrafluoroethylenepolymer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE2620284A1 DE2620284A1 (de) | 1976-11-18 |
| DE2620284C2 true DE2620284C2 (de) | 1985-04-25 |
Family
ID=26397378
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19762661083 Expired DE2661083C2 (enrdf_load_stackoverflow) | 1975-05-08 | 1976-05-07 | |
| DE19762620284 Expired DE2620284C2 (de) | 1975-05-08 | 1976-05-07 | Verfahren zur Herstellung modifizierter Polytetrafluoräthylene |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19762661083 Expired DE2661083C2 (enrdf_load_stackoverflow) | 1975-05-08 | 1976-05-07 |
Country Status (2)
| Country | Link |
|---|---|
| DE (2) | DE2661083C2 (enrdf_load_stackoverflow) |
| GB (1) | GB1527026A (enrdf_load_stackoverflow) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2724200C2 (de) * | 1977-05-27 | 1985-06-20 | E.I. Du Pont De Nemours And Co., Wilmington, Del. | Koaguliertes Tetrafluoräthylen- Copolymerisatpulver und Verfahren zu dessen Herstellung |
| JPS62109846A (ja) * | 1985-11-06 | 1987-05-21 | Daikin Ind Ltd | 含フツ素共重合体粒子水性分散体ならびに含フツ素共重合体粒子オルガノゾル組成物 |
| JP6381526B2 (ja) * | 2012-06-20 | 2018-08-29 | ソルベイ スペシャルティ ポリマーズ イタリー エス．ピー．エー． | テトラフルオロエチレンコポリマー |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3142665A (en) * | 1960-07-26 | 1964-07-28 | Du Pont | Novel tetrafluoroethylene resins and their preparation |
| US3088941A (en) | 1960-03-11 | 1963-05-07 | Du Pont | Process for the preparation of improved polytetrafluoroethylene extrusion powder |
| US3331822A (en) * | 1963-08-20 | 1967-07-18 | Thiokol Chemical Corp | Production of polytetrafluoroethylene molding powders by the aqueous suspension polymerization of tetrafluoroethylene with small amounts of perfluoroolefins containing from 3 to 4 carbon atoms |
| GB1116210A (en) * | 1966-05-25 | 1968-06-06 | Du Pont | Granular tetrafluoroethylene copolymer molding powders |
| US3528954A (en) * | 1967-10-30 | 1970-09-15 | Du Pont | Process for homopolymerization of tetrafluoroethylene and copolymerization of same with fluoro co-monomers in the solvent 1,1,2 - trichloro - 1,2,2 - trifluoroethane |
| DE1795078C3 (de) * | 1968-08-07 | 1974-12-19 | Farbwerke Hoechst Ag, Vormals Meister Lucius & Bruening, 6000 Frankfurt | Wäßrige Polytetrafluoräthylen-Dispersionen, Verfahren zu ihrer Herstellung und ihre Verwendung |
| US3655611A (en) * | 1968-08-09 | 1972-04-11 | Allied Chem | Cold flow resistant homogeneous polymers of tetrafluoroethylene and hexafluoropropene and process for preparing them |
-
1976
- 1976-05-04 GB GB1808276A patent/GB1527026A/en not_active Expired
- 1976-05-07 DE DE19762661083 patent/DE2661083C2/de not_active Expired
- 1976-05-07 DE DE19762620284 patent/DE2620284C2/de not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE2661083C2 (enrdf_load_stackoverflow) | 1989-06-29 |
| GB1527026A (en) | 1978-10-04 |
| DE2620284A1 (de) | 1976-11-18 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| D2 | Grant after examination | ||
| 8363 | Opposition against the patent | ||
| 8369 | Partition in: |
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| Q171 | Divided out to: |
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| 8366 | Restricted maintained after opposition proceedings | ||
| 8305 | Restricted maintenance of patent after opposition | ||
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| D4 | Patent maintained restricted | ||
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| 8339 | Ceased/non-payment of the annual fee |