CA1184728A - Continuous process for the agglomeration of ptfe powders in a liquid medium, and modified ptfe powder obtained thereby - Google Patents
Continuous process for the agglomeration of ptfe powders in a liquid medium, and modified ptfe powder obtained therebyInfo
- Publication number
- CA1184728A CA1184728A CA000410946A CA410946A CA1184728A CA 1184728 A CA1184728 A CA 1184728A CA 000410946 A CA000410946 A CA 000410946A CA 410946 A CA410946 A CA 410946A CA 1184728 A CA1184728 A CA 1184728A
- Authority
- CA
- Canada
- Prior art keywords
- stage
- powder
- agglomerated
- average
- diameter
- 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
- 239000000843 powder Substances 0.000 title claims abstract description 69
- 239000007788 liquid Substances 0.000 title claims abstract description 50
- 238000005054 agglomeration Methods 0.000 title claims abstract description 27
- 230000002776 aggregation Effects 0.000 title claims abstract description 27
- 238000010924 continuous production Methods 0.000 title claims description 6
- 229920001343 polytetrafluoroethylene Polymers 0.000 title abstract description 11
- 238000000034 method Methods 0.000 claims abstract description 71
- 239000002245 particle Substances 0.000 claims abstract description 71
- 230000008569 process Effects 0.000 claims abstract description 54
- 229920000642 polymer Polymers 0.000 claims abstract description 25
- 238000000465 moulding Methods 0.000 claims abstract description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 20
- 238000011282 treatment Methods 0.000 claims abstract description 18
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 claims abstract description 14
- 238000009736 wetting Methods 0.000 claims abstract description 4
- 238000003756 stirring Methods 0.000 claims description 50
- 230000009471 action Effects 0.000 claims description 26
- 239000000725 suspension Substances 0.000 claims description 19
- 239000011148 porous material Substances 0.000 claims description 14
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 8
- 125000004432 carbon atom Chemical group C* 0.000 claims description 5
- 230000000694 effects Effects 0.000 claims description 5
- 239000000945 filler Substances 0.000 claims description 5
- 239000011164 primary particle Substances 0.000 claims description 5
- QYKIQEUNHZKYBP-UHFFFAOYSA-N Vinyl ether Chemical class C=COC=C QYKIQEUNHZKYBP-UHFFFAOYSA-N 0.000 claims description 4
- 238000004438 BET method Methods 0.000 claims description 3
- 238000013019 agitation Methods 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 230000007547 defect Effects 0.000 claims description 3
- 239000011163 secondary particle Substances 0.000 claims description 3
- 230000008859 change Effects 0.000 claims description 2
- 238000000265 homogenisation Methods 0.000 claims description 2
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 238000003466 welding Methods 0.000 claims 2
- 239000004810 polytetrafluoroethylene Substances 0.000 abstract description 9
- -1 polytetrafluoro-ethylene Polymers 0.000 abstract description 7
- 150000002170 ethers Chemical class 0.000 abstract description 5
- 239000000155 melt Substances 0.000 abstract description 5
- 238000012545 processing Methods 0.000 abstract description 5
- 229920002554 vinyl polymer Polymers 0.000 abstract description 4
- 238000009826 distribution Methods 0.000 abstract description 2
- 229940058401 polytetrafluoroethylene Drugs 0.000 abstract 1
- 239000002609 medium Substances 0.000 description 16
- 150000002500 ions Chemical class 0.000 description 13
- 238000012360 testing method Methods 0.000 description 9
- 239000003795 chemical substances by application Substances 0.000 description 7
- 239000003502 gasoline Substances 0.000 description 7
- 238000001035 drying Methods 0.000 description 6
- 238000009835 boiling Methods 0.000 description 5
- 238000012216 screening Methods 0.000 description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 4
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 3
- 238000000748 compression moulding Methods 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 238000007599 discharging Methods 0.000 description 3
- 238000005755 formation reaction Methods 0.000 description 3
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 3
- 238000006116 polymerization reaction Methods 0.000 description 3
- OFBQJSOFQDEBGM-UHFFFAOYSA-N Pentane Chemical compound CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 description 2
- 150000001335 aliphatic alkanes Chemical class 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000001246 colloidal dispersion Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 239000003365 glass fiber Substances 0.000 description 2
- 238000000227 grinding Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 229920001519 homopolymer Polymers 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 235000014571 nuts Nutrition 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 241000894007 species Species 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 229920001169 thermoplastic Polymers 0.000 description 2
- 239000004416 thermosoftening plastic Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 102000004726 Connectin Human genes 0.000 description 1
- 108010002947 Connectin Proteins 0.000 description 1
- 241000518994 Conta Species 0.000 description 1
- 229920008712 Copo Polymers 0.000 description 1
- 241001050985 Disco Species 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- 239000004908 Emulsion polymer Substances 0.000 description 1
- 101100126176 Escherichia coli (strain K12) intQ gene Proteins 0.000 description 1
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 description 1
- 101150083807 HSD17B10 gene Proteins 0.000 description 1
- 241000820057 Ithone Species 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- 101100321000 Mus musculus Ypel3 gene Proteins 0.000 description 1
- XKLMZUWKNUAPSZ-UHFFFAOYSA-N N-(2,6-dimethylphenyl)-2-{4-[2-hydroxy-3-(2-methoxyphenoxy)propyl]piperazin-1-yl}acetamide Chemical compound COC1=CC=CC=C1OCC(O)CN1CCN(CC(=O)NC=2C(=CC=CC=2C)C)CC1 XKLMZUWKNUAPSZ-UHFFFAOYSA-N 0.000 description 1
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 1
- 102400000830 Saposin-B Human genes 0.000 description 1
- 101800001697 Saposin-B Proteins 0.000 description 1
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 1
- 240000008042 Zea mays Species 0.000 description 1
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 description 1
- 235000002017 Zea mays subsp mays Nutrition 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 239000012736 aqueous medium Substances 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000003610 charcoal Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 150000008280 chlorinated hydrocarbons Chemical class 0.000 description 1
- UUAGAQFQZIEFAH-UHFFFAOYSA-N chlorotrifluoroethylene Chemical group FC(F)=C(F)Cl UUAGAQFQZIEFAH-UHFFFAOYSA-N 0.000 description 1
- 239000011362 coarse particle Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 235000005822 corn Nutrition 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 150000001924 cycloalkanes Chemical class 0.000 description 1
- 239000008367 deionised water Substances 0.000 description 1
- 229910021641 deionized water Inorganic materials 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 239000003995 emulsifying agent Substances 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- KVFIJIWMDBAGDP-UHFFFAOYSA-N ethylpyrazine Chemical compound CCC1=CN=CC=N1 KVFIJIWMDBAGDP-UHFFFAOYSA-N 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- JFUIHGAGFMFNRD-UHFFFAOYSA-N fica Chemical compound FC1=CC=C2NC(C(=O)NCCS)=CC2=C1 JFUIHGAGFMFNRD-UHFFFAOYSA-N 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 239000000727 fraction Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000005469 granulation Methods 0.000 description 1
- 230000003179 granulation Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 150000008282 halocarbons Chemical class 0.000 description 1
- HCDGVLDPFQMKDK-UHFFFAOYSA-N hexafluoropropylene Chemical group FC(F)=C(F)C(F)(F)F HCDGVLDPFQMKDK-UHFFFAOYSA-N 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- LMAZKPOSWVOFGY-FBAUPLQOSA-N orine Natural products CO[C@H]1C[C@H](O[C@H]2CC[C@]3(C)[C@H]4C[C@@H](OC(=O)C=Cc5ccccc5)[C@]6(C)[C@@](O)(CC[C@]6(O)[C@]4(O)CC=C3C2)[C@H](C)OC(=O)C=Cc7ccccc7)O[C@H](C)[C@H]1O LMAZKPOSWVOFGY-FBAUPLQOSA-N 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 125000005010 perfluoroalkyl group Chemical group 0.000 description 1
- HCTVWSOKIJULET-LQDWTQKMSA-M phenoxymethylpenicillin potassium Chemical compound [K+].N([C@H]1[C@H]2SC([C@@H](N2C1=O)C([O-])=O)(C)C)C(=O)COC1=CC=CC=C1 HCTVWSOKIJULET-LQDWTQKMSA-M 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000001846 repelling effect Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000005029 sieve analysis Methods 0.000 description 1
- 229910000077 silane Inorganic materials 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- CMXPERZAMAQXSF-UHFFFAOYSA-M sodium;1,4-bis(2-ethylhexoxy)-1,4-dioxobutane-2-sulfonate;1,8-dihydroxyanthracene-9,10-dione Chemical compound [Na+].O=C1C2=CC=CC(O)=C2C(=O)C2=C1C=CC=C2O.CCCCC(CC)COC(=O)CC(S([O-])(=O)=O)C(=O)OCC(CC)CCCC CMXPERZAMAQXSF-UHFFFAOYSA-M 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000009864 tensile test Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
- NWONKYPBYAMBJT-UHFFFAOYSA-L zinc sulfate Chemical compound [Zn+2].[O-]S([O-])(=O)=O NWONKYPBYAMBJT-UHFFFAOYSA-L 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
-
- 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
- C08J3/16—Powdering or granulating by coagulating dispersions
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
- Y10T428/2982—Particulate matter [e.g., sphere, flake, etc.]
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Dispersion Chemistry (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3135598A DE3135598A1 (de) | 1981-09-09 | 1981-09-09 | "kontinuierliches verfahren zur agglomerierung von ptee-pulvern im fluessigen medium und damit gewonnenes modifiziertes ptee-pulver" |
| DEP3135598.6 | 1981-09-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1184728A true CA1184728A (en) | 1985-04-02 |
Family
ID=6141149
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000410946A Expired CA1184728A (en) | 1981-09-09 | 1982-09-08 | Continuous process for the agglomeration of ptfe powders in a liquid medium, and modified ptfe powder obtained thereby |
Country Status (6)
| Country | Link |
|---|---|
| US (2) | US4439385A (https=) |
| EP (1) | EP0074096B1 (https=) |
| JP (2) | JPS5865722A (https=) |
| BR (1) | BR8205249A (https=) |
| CA (1) | CA1184728A (https=) |
| DE (2) | DE3135598A1 (https=) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102011078766A1 (de) | 2011-07-06 | 2013-01-10 | Leibniz-Institut Für Polymerforschung Dresden E.V. | Verfahren zur verarbeitung von ptfe |
Families Citing this family (66)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61136525A (ja) * | 1984-12-07 | 1986-06-24 | Du Pont Mitsui Fluorochem Co Ltd | 変性ポリテトラフルオロエチレン成形体の接合体 |
| DE3787700T3 (de) * | 1986-10-29 | 1998-12-24 | Kanegafuchi Kagaku Kogyo K.K., Osaka | Gleichförmige Polymerteilchen. |
| JPH02175727A (ja) * | 1988-12-28 | 1990-07-09 | Kagawa Atsuko | 超微粒子状複合材料の製造方法 |
| JP2701434B2 (ja) * | 1989-03-14 | 1998-01-21 | ダイキン工業株式会社 | ポリテトラフルオロエチレンの湿潤パウダーの連続製造法 |
| US5977295A (en) * | 1990-03-12 | 1999-11-02 | Daikin Industries, Ltd | Continuous process for preparing polytetrafluoroethylene wet powder |
| US5180622A (en) * | 1990-04-02 | 1993-01-19 | The Procter & Gamble Company | Absorbent members containing interparticle crosslinked aggregates |
| US5149334A (en) * | 1990-04-02 | 1992-09-22 | The Procter & Gamble Company | Absorbent articles containing interparticle crosslinked aggregates |
| US5124188A (en) * | 1990-04-02 | 1992-06-23 | The Procter & Gamble Company | Porous, absorbent, polymeric macrostructures and methods of making the same |
| US5300565A (en) * | 1990-04-02 | 1994-04-05 | The Procter & Gamble Company | Particulate, absorbent, polymeric compositions containing interparticle crosslinked aggregates |
| US5492962A (en) * | 1990-04-02 | 1996-02-20 | The Procter & Gamble Company | Method for producing compositions containing interparticle crosslinked aggregates |
| JP3177983B2 (ja) * | 1992-02-05 | 2001-06-18 | ダイキン工業株式会社 | ポリテトラフルオロエチレン成形用粉末 |
| US5433906A (en) * | 1993-07-09 | 1995-07-18 | General Motors Corporation | Composite of small carbon fibers and thermoplastics and method for making same |
| DE4331971A1 (de) * | 1993-09-21 | 1995-03-23 | Hoechst Ag | Polytetrafluorethylen-Mikropulver, ihre Herstellung und Verwendung |
| US5868724A (en) * | 1993-10-22 | 1999-02-09 | The Procter & Gamble Company | Non-continuous absorbent cores comprising a porous macrostructure of absorbent gelling particles |
| US5536264A (en) * | 1993-10-22 | 1996-07-16 | The Procter & Gamble Company | Absorbent composites comprising a porous macrostructure of absorbent gelling particles and a substrate |
| US5713881A (en) * | 1993-10-22 | 1998-02-03 | Rezai; Ebrahim | Non-continuous absorbent composites comprising a porous macrostructure of absorbent gelling particles and a substrate |
| US5372766A (en) * | 1994-03-31 | 1994-12-13 | The Procter & Gamble Company | Flexible, porous, absorbent, polymeric macrostructures and methods of making the same |
| JP3671435B2 (ja) * | 1994-07-22 | 2005-07-13 | ダイキン工業株式会社 | 高分子量フッ素系溶融樹脂微粉末、その成形品、及びこれらの製造方法 |
| US5502161A (en) * | 1994-12-21 | 1996-03-26 | Ici Americas Inc. | Method for the production of free-flowing tetrafluoroethylene polymer molding powders |
| AU4869796A (en) * | 1995-02-21 | 1996-09-11 | Serrot Corporation | Fabric mesh reinforced monolithic thermoplastic membrane |
| JPH0952955A (ja) * | 1995-08-11 | 1997-02-25 | Daikin Ind Ltd | 変性ポリテトラフルオロエチレン粒状粉末の製法 |
| CN1088463C (zh) * | 1995-11-09 | 2002-07-31 | 大金工业株式会社 | 加有填料的聚四氟乙烯成型用粒状粉末及其制造方法 |
| DE19547907A1 (de) * | 1995-12-21 | 1997-06-26 | Dyneon Gmbh | Nichtrieselfähige Formpulver aus modifizierten Polytetrafluorethylenen |
| EP1004426A4 (en) * | 1997-03-17 | 2000-06-28 | Daikin Ind Ltd | METHOD FOR CONNECTING AND MOLDING MOLDINGS FROM MODIFIED POLYTETRAFLUORETHYLENE |
| EP0970799B2 (en) † | 1997-03-19 | 2010-09-08 | Daikin Industries, Ltd. | method of production of a molded polytetrafluoroethylene article |
| US6518349B1 (en) * | 1999-03-31 | 2003-02-11 | E. I. Du Pont De Nemours And Company | Sprayable powder of non-fibrillatable fluoropolymer |
| US6482979B1 (en) | 1999-12-22 | 2002-11-19 | Dyneon Llc | Perfluorinated acid fluorides and preparation thereof |
| CA2382525A1 (en) * | 2000-06-01 | 2001-12-06 | 3M Innovative Properties Company | High purity fluoropolymers |
| US7125941B2 (en) * | 2001-03-26 | 2006-10-24 | 3M Innovative Properties Company | Aqueous emulsion polymerization process for producing fluoropolymers |
| JP4624646B2 (ja) | 2001-05-02 | 2011-02-02 | スリーエム イノベイティブ プロパティズ カンパニー | フルオロポリマーを製造するための連鎖移動剤としてのエーテルの存在下での水性乳化重合 |
| WO2002088207A1 (en) | 2001-05-02 | 2002-11-07 | 3M Innovative Properties Company | Emulsifier free aqueous emulsion polymerization process for making fluoropolymers |
| US6737489B2 (en) | 2001-05-21 | 2004-05-18 | 3M Innovative Properties Company | Polymers containing perfluorovinyl ethers and applications for such polymers |
| US7045571B2 (en) * | 2001-05-21 | 2006-05-16 | 3M Innovative Properties Company | Emulsion polymerization of fluorinated monomers |
| US7279522B2 (en) | 2001-09-05 | 2007-10-09 | 3M Innovative Properties Company | Fluoropolymer dispersions containing no or little low molecular weight fluorinated surfactant |
| US6870020B2 (en) * | 2002-04-30 | 2005-03-22 | E. I. Du Pont De Nemours And Company | High vinyl ether modified sinterable polytetrafluoroethylene |
| ITMI20021383A1 (it) * | 2002-06-21 | 2003-12-22 | Dry Doughy S R L | Procedimento ed additivo per la coalizione e l'impastamento a secco di polveri fino ad arrivare alla sfogliatura |
| US7064170B2 (en) * | 2002-10-31 | 2006-06-20 | 3M Innovative Properties Company | Emulsifier free aqueous emulsion polymerization to produce copolymers of a fluorinated olefin and hydrocarbon olefin |
| CN1295258C (zh) * | 2002-12-19 | 2007-01-17 | 旭硝子株式会社 | 四氟乙烯共聚物 |
| EP1441014A1 (en) * | 2003-01-22 | 2004-07-28 | 3M Innovative Properties Company | Aqueous fluoropolymer dispersion comprising a melt processible fluoropolymer and having a reduced amount of fluorinated surfactant |
| ATE502062T1 (de) * | 2003-10-24 | 2011-04-15 | 3M Innovative Properties Co | Wässrige dispersionen von polytetrafluorethylenteilchen |
| EP1533325B1 (en) * | 2003-11-17 | 2011-10-19 | 3M Innovative Properties Company | Aqueous dispersions of polytetrafluoroethylene having a low amount of fluorinated surfactant |
| EP1570917B1 (en) * | 2004-03-01 | 2009-06-10 | 3M Innovative Properties Company | Method of coating a substrate with a fluoropolymer dispersion |
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| GB0525978D0 (en) * | 2005-12-21 | 2006-02-01 | 3M Innovative Properties Co | Fluorinated Surfactants For Making Fluoropolymers |
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| WO2010114033A1 (ja) * | 2009-03-31 | 2010-10-07 | ダイキン工業株式会社 | 低分子量ポリテトラフルオロエチレン粉末及びその製造方法 |
| CN104093747B (zh) * | 2012-02-02 | 2016-02-10 | 旭硝子株式会社 | 聚四氟乙烯细粉的制造方法 |
| CN105793300B (zh) | 2013-11-29 | 2018-01-05 | 大金工业株式会社 | 改性聚四氟乙烯细粉和单向拉伸多孔质体 |
| GB201807544D0 (en) | 2018-05-09 | 2018-06-20 | 3M Innovative Properties Co | Fluoropolymers with very low amounts of a fluorinated alkanoic acid or its salts |
| CN117430473B (zh) * | 2023-11-03 | 2025-06-27 | 北京理工大学 | 一种核壳型二硝酰胺铵基复合材料及其制备方法 |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1061227A (en) * | 1963-11-28 | 1967-03-08 | Ogilvie Flour Mills Company Lt | Process and apparatus for preparing free-flowing and readily dispersible products from finely powdered materials |
| US3527857A (en) * | 1965-10-26 | 1970-09-08 | Hoechst Ag | Process for preparing polytetrafluoroethylene-containing powder |
| US3597405A (en) * | 1966-04-21 | 1971-08-03 | Daikin Ind Ltd | Polytertrafluoroethylene powder and method for making the same |
| JPS5221011B1 (https=) * | 1971-04-14 | 1977-06-08 | ||
| JPS5032098B2 (https=) * | 1972-08-09 | 1975-10-17 | ||
| US4123606A (en) * | 1977-09-21 | 1978-10-31 | E. I. Du Pont De Nemours And Company | Deagglomeration process |
| DE2744244C3 (de) * | 1977-10-01 | 1981-01-08 | Hoechst Ag, 6000 Frankfurt | Thermisch vorbehandeltes, aus der Schmelze nicht verarbeitbares, mit einem perfluorierten Monomeren modifiziertes Tetrafluoräthylen-Polymerisatpulver und Verfahren zur Herstellung von Pulvern von aus der Schmelze nicht verarbeitbaren Tetrafluoräthylen-Polymerisaten mit hohem Schüttgewicht und guter Rieselfähigkeit |
| US4241137A (en) * | 1977-11-22 | 1980-12-23 | Daikin Kogyo Co., Ltd. | Process for preparing polytetrafluoroethylene granular powder |
| DE2949908A1 (de) * | 1979-12-12 | 1981-06-19 | Hoechst Ag, 6230 Frankfurt | Rieselfaehige sinterpulver mit verbesserten eigenschaften auf basis von tetrafluorethylen-polymeren und verfahren zu deren herstellung |
| DE3110193A1 (de) * | 1980-06-06 | 1982-09-30 | Hoechst Ag, 6000 Frankfurt | "verbessertes verfahren zur herstellung von modifiziertem tetrafluorethylen-polymerisatpulver mit hohem schuettgewicht und guter rieselfaehigkeit" |
-
1981
- 1981-09-09 DE DE3135598A patent/DE3135598A1/de not_active Withdrawn
-
1982
- 1982-09-01 US US06/413,716 patent/US4439385A/en not_active Expired - Lifetime
- 1982-09-03 EP EP82108130A patent/EP0074096B1/de not_active Expired
- 1982-09-03 DE DE8282108130T patent/DE3270126D1/de not_active Expired
- 1982-09-08 BR BR8205249A patent/BR8205249A/pt unknown
- 1982-09-08 JP JP57155337A patent/JPS5865722A/ja active Granted
- 1982-09-08 CA CA000410946A patent/CA1184728A/en not_active Expired
-
1987
- 1987-03-03 US US07/021,168 patent/US4774304A/en not_active Expired - Lifetime
-
1990
- 1990-12-19 JP JP2403738A patent/JPH0776274B2/ja not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102011078766A1 (de) | 2011-07-06 | 2013-01-10 | Leibniz-Institut Für Polymerforschung Dresden E.V. | Verfahren zur verarbeitung von ptfe |
Also Published As
| Publication number | Publication date |
|---|---|
| EP0074096A2 (de) | 1983-03-16 |
| DE3270126D1 (en) | 1986-04-30 |
| US4774304A (en) | 1988-09-27 |
| JPS5865722A (ja) | 1983-04-19 |
| DE3135598A1 (de) | 1983-03-17 |
| US4439385A (en) | 1984-03-27 |
| EP0074096B1 (de) | 1986-03-26 |
| JPH0339105B2 (https=) | 1991-06-12 |
| JPH05186605A (ja) | 1993-07-27 |
| JPH0776274B2 (ja) | 1995-08-16 |
| BR8205249A (pt) | 1983-08-16 |
| EP0074096A3 (en) | 1983-09-14 |
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