RU2288922C2 - Способ очистки термоперерабатываемых сополимеров тетрафторэтилена и термоперерабатываемые сополимеры тетрафторэтилена - Google Patents
Способ очистки термоперерабатываемых сополимеров тетрафторэтилена и термоперерабатываемые сополимеры тетрафторэтилена Download PDFInfo
- Publication number
- RU2288922C2 RU2288922C2 RU2002120310/04A RU2002120310A RU2288922C2 RU 2288922 C2 RU2288922 C2 RU 2288922C2 RU 2002120310/04 A RU2002120310/04 A RU 2002120310/04A RU 2002120310 A RU2002120310 A RU 2002120310A RU 2288922 C2 RU2288922 C2 RU 2288922C2
- Authority
- RU
- Russia
- Prior art keywords
- column
- stage
- gel
- latex
- polymer
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 48
- 229920001577 copolymer Polymers 0.000 title claims abstract description 26
- 229920000642 polymer Polymers 0.000 claims abstract description 59
- 239000004816 latex Substances 0.000 claims abstract description 56
- 229920000126 latex Polymers 0.000 claims abstract description 56
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 47
- 239000003792 electrolyte Substances 0.000 claims abstract description 16
- 238000006116 polymerization reaction Methods 0.000 claims abstract description 15
- 238000010907 mechanical stirring Methods 0.000 claims abstract description 11
- 239000000243 solution Substances 0.000 claims abstract description 11
- 239000002253 acid Substances 0.000 claims abstract description 9
- 239000007864 aqueous solution Substances 0.000 claims abstract description 9
- 230000002378 acidificating effect Effects 0.000 claims abstract description 8
- 238000000746 purification Methods 0.000 claims abstract description 7
- 239000006185 dispersion Substances 0.000 claims abstract description 6
- 230000007935 neutral effect Effects 0.000 claims abstract description 3
- 238000005406 washing Methods 0.000 claims description 46
- 150000001768 cations Chemical class 0.000 claims description 30
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 claims description 24
- 238000002156 mixing Methods 0.000 claims description 13
- 239000004094 surface-active agent Substances 0.000 claims description 12
- 238000001035 drying Methods 0.000 claims description 10
- BQCIDUSAKPWEOX-UHFFFAOYSA-N 1,1-Difluoroethene Chemical compound FC(F)=C BQCIDUSAKPWEOX-UHFFFAOYSA-N 0.000 claims description 6
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims description 6
- UUAGAQFQZIEFAH-UHFFFAOYSA-N chlorotrifluoroethylene Chemical group FC(F)=C(F)Cl UUAGAQFQZIEFAH-UHFFFAOYSA-N 0.000 claims description 6
- 125000003709 fluoroalkyl group Chemical group 0.000 claims description 6
- 229910052739 hydrogen Inorganic materials 0.000 claims description 6
- 229910017604 nitric acid Inorganic materials 0.000 claims description 6
- -1 fluoroalkyl vinyl ethers Chemical class 0.000 claims description 5
- 230000002093 peripheral effect Effects 0.000 claims description 5
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 4
- 230000000737 periodic effect Effects 0.000 claims description 4
- 150000001336 alkenes Chemical class 0.000 claims description 3
- 239000000178 monomer Substances 0.000 claims description 3
- MIZLGWKEZAPEFJ-UHFFFAOYSA-N 1,1,2-trifluoroethene Chemical group FC=C(F)F MIZLGWKEZAPEFJ-UHFFFAOYSA-N 0.000 claims description 2
- HFNSTEOEZJBXIF-UHFFFAOYSA-N 2,2,4,5-tetrafluoro-1,3-dioxole Chemical class FC1=C(F)OC(F)(F)O1 HFNSTEOEZJBXIF-UHFFFAOYSA-N 0.000 claims description 2
- QMIWYOZFFSLIAK-UHFFFAOYSA-N 3,3,3-trifluoro-2-(trifluoromethyl)prop-1-ene Chemical compound FC(F)(F)C(=C)C(F)(F)F QMIWYOZFFSLIAK-UHFFFAOYSA-N 0.000 claims description 2
- QYKIQEUNHZKYBP-UHFFFAOYSA-N Vinyl ether Chemical class C=COC=C QYKIQEUNHZKYBP-UHFFFAOYSA-N 0.000 claims description 2
- 125000004429 atom Chemical group 0.000 claims description 2
- 125000001246 bromo group Chemical group Br* 0.000 claims description 2
- 125000001309 chloro group Chemical group Cl* 0.000 claims description 2
- 150000001875 compounds Chemical class 0.000 claims description 2
- 238000010908 decantation Methods 0.000 claims description 2
- 150000001993 dienes Chemical class 0.000 claims description 2
- 238000007865 diluting Methods 0.000 claims description 2
- 238000007720 emulsion polymerization reaction Methods 0.000 claims description 2
- 150000002148 esters Chemical class 0.000 claims description 2
- 125000001033 ether group Chemical group 0.000 claims description 2
- XUCNUKMRBVNAPB-UHFFFAOYSA-N fluoroethene Chemical compound FC=C XUCNUKMRBVNAPB-UHFFFAOYSA-N 0.000 claims description 2
- HCDGVLDPFQMKDK-UHFFFAOYSA-N hexafluoropropylene Chemical group FC(F)=C(F)C(F)(F)F HCDGVLDPFQMKDK-UHFFFAOYSA-N 0.000 claims description 2
- 150000007522 mineralic acids Chemical class 0.000 claims description 2
- 125000004430 oxygen atom Chemical group O* 0.000 claims description 2
- 238000004140 cleaning Methods 0.000 claims 2
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical group C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims 1
- 239000005977 Ethylene Substances 0.000 claims 1
- 230000000379 polymerizing effect Effects 0.000 claims 1
- 230000003287 optical effect Effects 0.000 abstract description 11
- 239000000126 substance Substances 0.000 abstract description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 239000000839 emulsion Substances 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract 1
- 239000000499 gel Substances 0.000 description 43
- 239000000843 powder Substances 0.000 description 29
- 238000003756 stirring Methods 0.000 description 17
- 238000004383 yellowing Methods 0.000 description 11
- 239000000203 mixture Substances 0.000 description 10
- 238000005188 flotation Methods 0.000 description 8
- 239000008187 granular material Substances 0.000 description 8
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 7
- 238000005345 coagulation Methods 0.000 description 7
- 230000015271 coagulation Effects 0.000 description 7
- 238000011010 flushing procedure Methods 0.000 description 7
- 229910052700 potassium Inorganic materials 0.000 description 7
- 239000011591 potassium Substances 0.000 description 7
- NPYPAHLBTDXSSS-UHFFFAOYSA-N Potassium ion Chemical compound [K+] NPYPAHLBTDXSSS-UHFFFAOYSA-N 0.000 description 6
- 239000002245 particle Substances 0.000 description 6
- 238000000926 separation method Methods 0.000 description 6
- 229920001897 terpolymer Polymers 0.000 description 6
- 230000015572 biosynthetic process Effects 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 5
- 239000004065 semiconductor Substances 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 238000005469 granulation Methods 0.000 description 4
- 230000003179 granulation Effects 0.000 description 4
- 238000000465 moulding Methods 0.000 description 4
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 238000011437 continuous method Methods 0.000 description 3
- 238000001125 extrusion Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 238000001879 gelation Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000012071 phase Substances 0.000 description 3
- USHAGKDGDHPEEY-UHFFFAOYSA-L potassium persulfate Chemical compound [K+].[K+].[O-]S(=O)(=O)OOS([O-])(=O)=O USHAGKDGDHPEEY-UHFFFAOYSA-L 0.000 description 3
- 238000004457 water analysis Methods 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- VQTUBCCKSQIDNK-UHFFFAOYSA-N Isobutene Chemical compound CC(C)=C VQTUBCCKSQIDNK-UHFFFAOYSA-N 0.000 description 2
- AFVFQIVMOAPDHO-UHFFFAOYSA-N Methanesulfonic acid Chemical compound CS(O)(=O)=O AFVFQIVMOAPDHO-UHFFFAOYSA-N 0.000 description 2
- 238000011088 calibration curve Methods 0.000 description 2
- 229940009493 gel-one Drugs 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000007791 liquid phase Substances 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 239000008188 pellet Substances 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 238000011002 quantification Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000006228 supernatant Substances 0.000 description 2
- HNSDLXPSAYFUHK-UHFFFAOYSA-N 1,4-bis(2-ethylhexyl) sulfosuccinate Chemical compound CCCCC(CC)COC(=O)CC(S(O)(=O)=O)C(=O)OCC(CC)CCCC HNSDLXPSAYFUHK-UHFFFAOYSA-N 0.000 description 1
- 239000004262 Ethyl gallate Substances 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 239000008346 aqueous phase 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 class [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
- 238000010923 batch production Methods 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 238000004587 chromatography analysis Methods 0.000 description 1
- 238000001724 coherent Stokes Raman spectroscopy Methods 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000032798 delamination Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000000368 destabilizing effect Effects 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 238000012674 dispersion polymerization Methods 0.000 description 1
- 239000003480 eluent Substances 0.000 description 1
- 238000010828 elution Methods 0.000 description 1
- 230000032050 esterification Effects 0.000 description 1
- 238000005886 esterification reaction Methods 0.000 description 1
- 150000002170 ethers Chemical class 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000004255 ion exchange chromatography Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 229940098779 methanesulfonic acid Drugs 0.000 description 1
- 150000004702 methyl esters Chemical class 0.000 description 1
- 239000004530 micro-emulsion Substances 0.000 description 1
- 239000012452 mother liquor Substances 0.000 description 1
- 239000003505 polymerization initiator Substances 0.000 description 1
- XAEFZNCEHLXOMS-UHFFFAOYSA-M potassium benzoate Chemical compound [K+].[O-]C(=O)C1=CC=CC=C1 XAEFZNCEHLXOMS-UHFFFAOYSA-M 0.000 description 1
- 229910001414 potassium ion Inorganic materials 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000003643 water by type 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
- C08J3/02—Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques
- C08J3/03—Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques in aqueous media
- C08J3/075—Macromolecular gels
-
- 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
- C08F6/00—Post-polymerisation treatments
- C08F6/14—Treatment of polymer emulsions
- C08F6/16—Purification
-
- 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
- C08F6/00—Post-polymerisation treatments
- C08F6/14—Treatment of polymer emulsions
- C08F6/22—Coagulation
-
- 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)
- Dispersion Chemistry (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT2001MI001614A ITMI20011614A1 (it) | 2001-07-26 | 2001-07-26 | Processo di purificazione di copolimeri termoprocessabili del tetrafluoroetilene |
| ITMI2001A001614 | 2001-07-26 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| RU2002120310A RU2002120310A (ru) | 2004-02-27 |
| RU2288922C2 true RU2288922C2 (ru) | 2006-12-10 |
Family
ID=11448153
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| RU2002120310/04A RU2288922C2 (ru) | 2001-07-26 | 2002-07-25 | Способ очистки термоперерабатываемых сополимеров тетрафторэтилена и термоперерабатываемые сополимеры тетрафторэтилена |
Country Status (6)
| Country | Link |
|---|---|
| US (2) | US7015368B2 (enExample) |
| EP (1) | EP1279681B1 (enExample) |
| JP (1) | JP4264230B2 (enExample) |
| DE (1) | DE60233776D1 (enExample) |
| IT (1) | ITMI20011614A1 (enExample) |
| RU (1) | RU2288922C2 (enExample) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005007709A1 (ja) * | 2003-07-03 | 2005-01-27 | Daikin Industries, Ltd. | フルオロポリマー凝集体及びその製造方法 |
| ITMI20041251A1 (it) | 2004-06-22 | 2004-09-22 | Solvay Solexis Spa | Gel di perfluoroelastomeri |
| ITMI20041253A1 (it) * | 2004-06-22 | 2004-09-22 | Solvay Solexis Spa | Gel di fluoroelastomeri |
| ITMI20041572A1 (it) * | 2004-07-30 | 2004-10-30 | Solvay Solexis Spa | Capolimeri termoprocessabili a base di tfe |
| DE602005003074T2 (de) * | 2004-08-25 | 2008-08-14 | Asahi Glass Co., Ltd. | Fluorocopolymer |
| US7323506B2 (en) * | 2004-12-02 | 2008-01-29 | Natural Resources Canada | High performance P(VDF-TrFE) copolymer for pyroelectric conversion |
| ITMI20051397A1 (it) * | 2005-07-21 | 2007-01-22 | Solvay Solexis Spa | Polveri fini di fluoropolimeri |
| JP5343355B2 (ja) * | 2005-10-26 | 2013-11-13 | 旭硝子株式会社 | 含フッ素乳化剤の残留量が少ないフッ素樹脂およびその製造方法 |
| CN102443091B (zh) * | 2011-10-25 | 2013-07-24 | 中昊晨光化工研究院 | 一种聚全氟乙丙烯树脂的凝聚洗涤方法 |
| CN104822743B (zh) * | 2012-12-05 | 2018-09-21 | 索尔维特殊聚合物意大利有限公司 | 热处理后具有改进的热和机械特性的可熔融加工的全氟聚合物 |
| CN106661146A (zh) * | 2014-06-05 | 2017-05-10 | 索尔维特殊聚合物意大利有限公司 | 热处理后具有改进的热和机械特性的可熔融加工的全氟聚合物 |
| JPWO2020213691A1 (ja) * | 2019-04-16 | 2021-11-25 | ダイキン工業株式会社 | フルオロポリマー粉末の製造方法 |
| CN114437255A (zh) * | 2020-11-04 | 2022-05-06 | 浙江蓝天环保高科技股份有限公司 | 一种含氟聚合物的提纯方法 |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US395600A (en) * | 1889-01-01 | Gilbert walker | ||
| GB1290022A (enExample) * | 1968-12-16 | 1972-09-20 | ||
| DE19747817A1 (de) * | 1996-10-29 | 1998-05-28 | Asahi Glass Co Ltd | Fluor-enthaltendes Copolymer |
| RU2141489C1 (ru) * | 1993-07-05 | 1999-11-20 | Аусимонт С.п.А. | Термоперерабатываемый сополимер тетрафторэтилена |
| RU2154650C2 (ru) * | 1995-01-04 | 2000-08-20 | Аусимонт С.п.А. | Тетрафторэтиленовые термообрабатываемые сополимеры |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB129022A (en) | 1916-09-25 | 1919-07-10 | Marie Joseph Cornu | Improvements in or relating to Mercury Vapour Lamps. |
| FR1384989A (fr) * | 1963-01-25 | 1965-01-08 | Montedison Spa | Copolymères fluorés et procédé pour leur préparation |
| NL143244B (nl) * | 1964-07-31 | 1974-09-16 | Montedison Spa | Werkwijze om fluor bevattende terpolymeren te bereiden. |
| US3956000A (en) * | 1972-07-21 | 1976-05-11 | Hoechst Aktiengesellschaft | Fluorocarbon waxes and process for producing 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 |
| IT1204903B (it) | 1986-06-26 | 1989-03-10 | Ausimont Spa | Processo di polimerizzazione in dispersione acquosa di monomeri florati |
| IL82308A (en) | 1986-06-26 | 1990-11-29 | Ausimont Spa | Microemulsions containing perfluoropolyethers |
| ITMI981519A1 (it) | 1998-07-02 | 2000-01-02 | Ausimont Spa | Processodi polimerizzazione del tfe |
| WO2001092351A2 (en) * | 2000-06-01 | 2001-12-06 | 3M Innovative Properties Company | High purity fluoropolymers |
| ITMI20011615A1 (it) * | 2001-07-26 | 2003-01-26 | Ausimont Spa | Processo di ottenimento di p0lveri fini non termoprocessabili di ptfeomopolimero o ptfe modificato |
-
2001
- 2001-07-26 IT IT2001MI001614A patent/ITMI20011614A1/it unknown
-
2002
- 2002-07-23 DE DE60233776T patent/DE60233776D1/de not_active Expired - Lifetime
- 2002-07-23 EP EP02016467A patent/EP1279681B1/en not_active Expired - Lifetime
- 2002-07-25 JP JP2002216870A patent/JP4264230B2/ja not_active Expired - Lifetime
- 2002-07-25 RU RU2002120310/04A patent/RU2288922C2/ru not_active IP Right Cessation
- 2002-07-26 US US10/205,494 patent/US7015368B2/en not_active Expired - Lifetime
-
2004
- 2004-03-03 US US10/790,680 patent/US7157550B2/en not_active Expired - Lifetime
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US395600A (en) * | 1889-01-01 | Gilbert walker | ||
| GB1290022A (enExample) * | 1968-12-16 | 1972-09-20 | ||
| RU2141489C1 (ru) * | 1993-07-05 | 1999-11-20 | Аусимонт С.п.А. | Термоперерабатываемый сополимер тетрафторэтилена |
| RU2154650C2 (ru) * | 1995-01-04 | 2000-08-20 | Аусимонт С.п.А. | Тетрафторэтиленовые термообрабатываемые сополимеры |
| DE19747817A1 (de) * | 1996-10-29 | 1998-05-28 | Asahi Glass Co Ltd | Fluor-enthaltendes Copolymer |
Also Published As
| Publication number | Publication date |
|---|---|
| RU2002120310A (ru) | 2004-02-27 |
| DE60233776D1 (de) | 2009-11-05 |
| JP4264230B2 (ja) | 2009-05-13 |
| US7157550B2 (en) | 2007-01-02 |
| US7015368B2 (en) | 2006-03-21 |
| US20040167272A1 (en) | 2004-08-26 |
| EP1279681A2 (en) | 2003-01-29 |
| ITMI20011614A0 (it) | 2001-07-26 |
| US20030092860A1 (en) | 2003-05-15 |
| EP1279681B1 (en) | 2009-09-23 |
| EP1279681A3 (en) | 2004-01-21 |
| JP2003082019A (ja) | 2003-03-19 |
| ITMI20011614A1 (it) | 2003-01-26 |
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