KR970061935A - 과산화 퍼플루오르폴리옥시알킬렌의 제조방법 - Google Patents
과산화 퍼플루오르폴리옥시알킬렌의 제조방법 Download PDFInfo
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- KR970061935A KR970061935A KR1019970004275A KR19970004275A KR970061935A KR 970061935 A KR970061935 A KR 970061935A KR 1019970004275 A KR1019970004275 A KR 1019970004275A KR 19970004275 A KR19970004275 A KR 19970004275A KR 970061935 A KR970061935 A KR 970061935A
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- ultraviolet radiation
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- tetrafluoroethylene
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- 150000002978 peroxides Chemical class 0.000 title claims 4
- 238000004519 manufacturing process Methods 0.000 title 1
- 238000000034 method Methods 0.000 claims abstract 20
- 230000005855 radiation Effects 0.000 claims abstract 10
- 239000003999 initiator Substances 0.000 claims abstract 8
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 claims abstract 8
- 230000001590 oxidative effect Effects 0.000 claims abstract 7
- 239000000126 substance Substances 0.000 claims abstract 7
- 239000002904 solvent Substances 0.000 claims abstract 6
- 229910052760 oxygen Inorganic materials 0.000 claims abstract 3
- 239000001301 oxygen Substances 0.000 claims abstract 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical group [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract 2
- 229910052736 halogen Chemical group 0.000 claims abstract 2
- 150000002367 halogens Chemical group 0.000 claims abstract 2
- 229910052739 hydrogen Inorganic materials 0.000 claims 12
- 229920000642 polymer Polymers 0.000 claims 5
- 238000007254 oxidation reaction Methods 0.000 claims 4
- 229910052731 fluorine Inorganic materials 0.000 claims 3
- 239000007788 liquid Substances 0.000 claims 3
- 230000003647 oxidation Effects 0.000 claims 3
- 239000010702 perfluoropolyether Substances 0.000 claims 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims 2
- 229910052799 carbon Inorganic materials 0.000 claims 2
- 239000000460 chlorine Substances 0.000 claims 2
- 239000011737 fluorine Substances 0.000 claims 2
- 125000001153 fluoro group Chemical group F* 0.000 claims 2
- 239000001257 hydrogen Substances 0.000 claims 2
- 239000000047 product Substances 0.000 claims 2
- RKIMETXDACNTIE-UHFFFAOYSA-N 1,1,2,2,3,3,4,4,5,5,6,6-dodecafluorocyclohexane Chemical compound FC1(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C1(F)F RKIMETXDACNTIE-UHFFFAOYSA-N 0.000 claims 1
- DDMOUSALMHHKOS-UHFFFAOYSA-N 1,2-dichloro-1,1,2,2-tetrafluoroethane Chemical compound FC(F)(Cl)C(F)(F)Cl DDMOUSALMHHKOS-UHFFFAOYSA-N 0.000 claims 1
- RFCAUADVODFSLZ-UHFFFAOYSA-N 1-Chloro-1,1,2,2,2-pentafluoroethane Chemical compound FC(F)(F)C(F)(F)Cl RFCAUADVODFSLZ-UHFFFAOYSA-N 0.000 claims 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims 1
- 239000004340 Chloropentafluoroethane Substances 0.000 claims 1
- MWOMBZUDFHVUTB-UHFFFAOYSA-N ClC(C(F)(F)Cl)(F)Cl.ClC(C(F)(F)Cl)(F)Cl Chemical compound ClC(C(F)(F)Cl)(F)Cl.ClC(C(F)(F)Cl)(F)Cl MWOMBZUDFHVUTB-UHFFFAOYSA-N 0.000 claims 1
- 229920001774 Perfluoroether Polymers 0.000 claims 1
- 239000002253 acid Substances 0.000 claims 1
- 125000000217 alkyl group Chemical group 0.000 claims 1
- 239000006227 byproduct Substances 0.000 claims 1
- 125000004432 carbon atom Chemical group C* 0.000 claims 1
- 239000003638 chemical reducing agent Substances 0.000 claims 1
- 229910052801 chlorine Inorganic materials 0.000 claims 1
- 235000019406 chloropentafluoroethane Nutrition 0.000 claims 1
- 150000001875 compounds Chemical class 0.000 claims 1
- 125000004122 cyclic group Chemical group 0.000 claims 1
- 238000006114 decarboxylation reaction Methods 0.000 claims 1
- 238000010438 heat treatment Methods 0.000 claims 1
- 239000000852 hydrogen donor Substances 0.000 claims 1
- 239000000463 material Substances 0.000 claims 1
- 239000000203 mixture Substances 0.000 claims 1
- BCCOBQSFUDVTJQ-UHFFFAOYSA-N octafluorocyclobutane Chemical compound FC1(F)C(F)(F)C(F)(F)C1(F)F BCCOBQSFUDVTJQ-UHFFFAOYSA-N 0.000 claims 1
- 235000019407 octafluorocyclobutane Nutrition 0.000 claims 1
- QYSGYZVSCZSLHT-UHFFFAOYSA-N octafluoropropane Chemical compound FC(F)(F)C(F)(F)C(F)(F)F QYSGYZVSCZSLHT-UHFFFAOYSA-N 0.000 claims 1
- UJMWVICAENGCRF-UHFFFAOYSA-N oxygen difluoride Chemical class FOF UJMWVICAENGCRF-UHFFFAOYSA-N 0.000 claims 1
- -1 oxygen peroxide Chemical class 0.000 claims 1
- 125000005010 perfluoroalkyl group Chemical group 0.000 claims 1
- 229960004065 perflutren Drugs 0.000 claims 1
- 229920000570 polyether Polymers 0.000 claims 1
- 238000004064 recycling Methods 0.000 claims 1
- 238000006722 reduction reaction Methods 0.000 claims 1
- 150000003839 salts Chemical class 0.000 claims 1
- 238000006467 substitution reaction Methods 0.000 claims 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G65/00—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule
- C08G65/02—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring
- C08G65/04—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring from cyclic ethers only
- C08G65/22—Cyclic ethers having at least one atom other than carbon and hydrogen outside the ring
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G65/00—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule
- C08G65/002—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from unsaturated compounds
- C08G65/005—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from unsaturated compounds containing halogens
- C08G65/007—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from unsaturated compounds containing halogens containing fluorine
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G65/00—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G65/00—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule
- C08G65/02—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring
- C08G65/04—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring from cyclic ethers only
- C08G65/22—Cyclic ethers having at least one atom other than carbon and hydrogen outside the ring
- C08G65/223—Cyclic ethers having at least one atom other than carbon and hydrogen outside the ring containing halogens
- C08G65/226—Cyclic ethers having at least one atom other than carbon and hydrogen outside the ring containing halogens containing fluorine
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G65/00—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule
- C08G65/02—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring
- C08G65/32—Polymers modified by chemical after-treatment
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
- Polyethers (AREA)
- Orthopedics, Nursing, And Contraception (AREA)
- Hinges (AREA)
- Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
Abstract
8몰%보다 높은 양의 COF2를 포함하는 용매의 존재하에, 온도가 -100℃∼-40℃에서 자외선 방사 없이 X가 산소 또는 할로겐인 적어도 하나의 F-X 결합을 포함하는 화학개시제의 존재하에 작용함에 의한 테트라플루오르에틸렌의 산화방법.
Description
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
Claims (16)
- 온도가 -100℃∼-40℃에서, 자외선방사 없이 X가 산소 또는 할로겐인 적어도 하나의 F-X결합을 포함하는 화학개시제의 존재하에 작용함에 의한, 또한 총압력이 0∼15 상대방(bar)이고 8몰%보다 높은량의 COF2를 포함하는 용매 또는 COF2단독의 존재하에 작용함에 의한 테트라플루오르에틸렌의 산화방법.
- 제1항에 있어서, 온도가 -90℃∼-60℃인 것을 특징으로 하는 자외선방사 없이 테트라플루오르에틸렌의 산화방법.
- 제1항 또는 제2항에 있어서, 화학개시제는 불소 및 3가지의 탄소원자까지를 포함하는 알킬 하이포플루오리티로부터 선택되어지는 것을 특징으로 하는 자외선방사 없이 테트라플루오르에닐렌의 산화방법.
- 제1항 내지 제3항 중 어느 한 항에 있어서, 용매는 수소 및/ 또는 염소를 선택적으로 포함하는 선형 및 고리형 플루오르카본들; 퍼플루오르프로판(perfluoropropane), 퍼플루오르싸이클로부탄(perfluorocyclobu-tane), 퍼플루오르싸이클로헥사(perfluorocyclohexane), 클로로펜타플루오르에탄(chloropentafluoroethane), 1,1,2-트리클로로-1,2,2-트리플루오르에탄(1,1,2-trichloro-1,2,2-trifluoroethane), 1,2-디클로로테트라플루오르에탄(1,2-dichlorotetrafluoroethane); 수소를 선택적으로 포함하는 퍼플루오르아민(perfluoramines), 퍼플루오르에테르(perfluoroethers), 및 폴리에테르(polyethers)로 부터 선택되어 지는 것을 특징으로 하는 자외선방사 없이 테트라플루오르에틸렌의 산화방법.
- 제4항에 있어서, 용매는 CFCl3, CF2Cl2, CF2HCl, CF3-CF|2H, CF3-CFH2, CF2H-CF2H, CHF2-CH2F와 선택적으로 혼합된 CHCIF-CF2및/또는 CHF|2-CCIF2, CF3CFHCF2CF3, CF3CFHCFHCF2CF3또는 둘이상의 인용된 화합물의 공비(共沸) 또는 근-공비(近-共沸)혼합물; CF2OCF2HCF2,C8F17-O-C2F4H, CF2H-O-CF2H, C6F13-O-C2F4O-CF|2H, C8F17-0-CF2H, C7F15-O-C2F4H, C4F9-O-C2F|4H, C4F9OCH3,C4F9OC2H5, C3F7OCH3, C3F7OC2H|5, C2F5OCH3, C2F5OC2H5인 X'=F, H및 양극단의 수가 0에서 4까지의 정수인 n을 갖는 F(CF2CF2-CX'2O)nCF2CF2H, 및 중합체 사슬에 임의로 분포된 퍼플루오르옥시알킬렌 단위들로서 CF3, C2F5, C3F7, CF2H 및 CF3CFH, CF2CF2H로부터 선택되어지며, 양극단의 수가 0에서 3까지의 정수로 되어 있는 po, qo 및 ro와, 서로 같거나 다른 T 및 T'를 구비한 T-O(C3F6O)po(C2F4O)qo(CF20)|ro-T'로부터 선택되어지는 것을 특징으로 하는 자외선방사 없이 테트라플루오르에틸렌의 산화방법.
- 제1항 내지 제5항 중 어느 한 항에 있어서, 화학개시제는 액체상태의 TFE농도가 용액당 0.005~1몰의 범위에 있고, 액체상태의 리터당 그리고 시간당 0.001~0.1몰의 량이 액체상태로 공급되는 것을 특징으로 하는 자외선방사 없이 테트라플루오르에틸렌의 산화방법.
- 제6항에 있어서, TFE/화학개시제의 공급몰비율은 101∼200 사이로 구성되는 것을 특징으로 하는 자외선방사 없이 테트라플루오르에틸렌의 산화방법.
- 제7항에 있어서, TFE/화학개시제의 공급몰비율은 40∼120사이로 구성되는 것을 특징으로 하는 자외선방사없이 테트라플루오르에틸렌의 산화방법
- 제1항 내지 제8항 중 어느 한 항에 있어서, 용매에 포함된 COF2의 몰량은 15%∼60% 사이로 구성된 것을 특징으로 하는 자외선방사 없이 테트라플루오르에틸렌의 산화방법.
- 제1항 내지 제9항 중 어느 한 항에있어서, COF2는 청구항 1의 농축이 얻어질 때 까지의 산화반응에서 형성된 COF2부산물의 재순환으로부터 획득되는 것을 특징으로 하는 자외선방사 없이 테트라플루오르에틸렌의 산화방법.
- 제1항 내지 제10항 중 어느 한 항에 있어서, 획득된 과산화중합체는 다음과 같은 일반 화학식을 갖는 것을 특징으로 하는 자외선방사 없이 테트라플루오르에틸렌의 산화방법.A-O-(CF2-CF2-O)p-(CF2-O-)q-(O)r-B여기서, 말단 A 및 B는 서로 같거나 다를 수 있고, X가 사용된 개시제의 종류로부터 획득되는 라디칼족을 표시하는 -CF2X, -CF2-CF2X -CF2X를 포함하며; 서로 같거나 다른 p, q 및 r지수들은 정수이고, p와 q의 합은 2에서 1000 사이의 정수이며, p/q률은 0.1∼40 사이로 구성되고, 또 r/(p+q)률은 0.01∼0.3사이로 구성된다.
- 제11항에 있어서, 상기 과산화 중합체에 있어서, p+q는 10∼500 사이로 구성되며, p/q률은 0.2∼20 사이로 구성되는 것을 특징으로 하는 자외선방사 없이 테트라플루오르에틸렌의 산화방법.
- 제11항 또는 제12항에 있어서, 과산화 퍼플루오르폴리에테르는, 용매의 존부에 상관없이, 과산화 산소없이, 100∼250℃의 온도하에서 열처리 의해 또는 자외선 방사에 의해 생성물질로 변환되어지는 것을 특징으로 하는 자외선방사 없이 테스라플루오르에틸렌의 산화방법.
- 제13항에 있어서, 획득된 중합체는 퍼플루오르알킬 말단을 갖는 퍼플루오르폴리에테르를 얻기 위하여 플루오르 치환반응 취급단계로 제공되어지는 것을 특징으로 하는 자외선방사 없이 테트라플루오르에틸렌의 산화방법.
- 제13항에 있어서, 획득된 중합체는 기능적 생성물질을 얻기 위하여 화학적 환원단께 및 이어지는 변환반응단계로 제공되어지는 것을 특징으로 하는 자외선방사 없이 테트라플루오르에틸렌의 산화방법.
- 제15항에 있어서, 상기 기능적 유도체는 양 말단이 -OCF2H를 갖는 퍼플루오르폴리에테르를 얻기 위하여 수소주개(hydrogen-donor) 물질에존재하는 탈 카르복시 과정에 선택적으로 제공되어지며, 카르복실산염의 형태로 되어 있는 것을 특징으로 하는 자외선방사 없이 테트라플루오르에틸렌의 산화방법.※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT96MI000279A IT1282627B1 (it) | 1996-02-14 | 1996-02-14 | Procedimento per la preparazione di perfluoropoliossialchileni perossidici |
| ITMI96A000279 | 1996-02-14 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR970061935A true KR970061935A (ko) | 1997-09-12 |
| KR100486125B1 KR100486125B1 (ko) | 2005-10-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1019970004275A KR100486125B1 (ko) | 1996-02-14 | 1997-02-13 | 과산화퍼플루오르폴리옥시알킬렌의제조방법 |
Country Status (28)
| Country | Link |
|---|---|
| US (1) | US5744651A (ko) |
| EP (1) | EP0790269B1 (ko) |
| JP (1) | JP3862339B2 (ko) |
| KR (1) | KR100486125B1 (ko) |
| CN (1) | CN1080276C (ko) |
| AR (1) | AR005793A1 (ko) |
| AT (1) | ATE194850T1 (ko) |
| AU (1) | AU715369B2 (ko) |
| BG (1) | BG62394B1 (ko) |
| BR (1) | BR9700958A (ko) |
| CA (1) | CA2197538C (ko) |
| CZ (1) | CZ293428B6 (ko) |
| DE (1) | DE69702550T2 (ko) |
| ES (1) | ES2150155T3 (ko) |
| HR (1) | HRP970079B1 (ko) |
| HU (1) | HU220709B1 (ko) |
| IL (1) | IL120220A (ko) |
| IN (1) | IN190368B (ko) |
| IT (1) | IT1282627B1 (ko) |
| NO (1) | NO311693B1 (ko) |
| NZ (1) | NZ314218A (ko) |
| PE (1) | PE6598A1 (ko) |
| PL (1) | PL318452A1 (ko) |
| RO (1) | RO116894B1 (ko) |
| RU (1) | RU2194725C2 (ko) |
| TW (1) | TW442497B (ko) |
| UY (1) | UY24459A1 (ko) |
| ZA (1) | ZA971176B (ko) |
Families Citing this family (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ITMI20011340A1 (it) * | 2001-06-26 | 2002-12-26 | Ausimont Spa | Pfpe aventi almeno un terminale alchiletereo e relativo processo dipreparazione |
| ITMI20030372A1 (it) | 2003-03-03 | 2004-09-04 | Solvay Solexis Spa | Perfluoropolieteri lineari aventi migliorata stabilita' termoossidativa. |
| ITMI20031915A1 (it) * | 2003-10-03 | 2005-04-04 | Solvay Solexis Spa | Processo per la preparazione di perfluoropolieteri. |
| WO2008065163A1 (en) * | 2006-11-30 | 2008-06-05 | Solvay Solexis S.P.A. | Fluorinated lubricants |
| ITMI20062308A1 (it) * | 2006-11-30 | 2008-06-01 | Solvay Solexis Spa | Additivi per alo-polimeri |
| ITMI20062306A1 (it) * | 2006-11-30 | 2008-06-01 | Solvay Solexis Spa | Lubrificanti fluorurati |
| EP1980583A1 (en) * | 2007-04-10 | 2008-10-15 | Solvay Solexis S.p.A. | A method for preparing carbonylic perfluoropolyethers |
| EP2176162B1 (en) * | 2007-08-07 | 2018-02-28 | Solvay Specialty Polymers Italy S.p.A. | Modification of carbonaceous materials |
| EP2100909A1 (en) | 2008-03-14 | 2009-09-16 | Solvay Solexis S.p.A. | (Per)fluorinated addition products |
| EP2319879B1 (en) * | 2008-08-15 | 2015-11-18 | Zhonghao Chenguang Research Institute Of Chemical Industry | A peroxidic fluoropolyether and its use in emulsion polymerization of fluorin-containing monomer |
| US8557952B2 (en) | 2008-12-05 | 2013-10-15 | Solvay Solexis S.P.A. | Polyfunctional (per)fluoropolyethers |
| WO2013092632A1 (en) * | 2011-12-22 | 2013-06-27 | Solvay Specialty Polymers Italy S.P.A. | Process for the manufacture of (per)fluoropolyethers with aromatic end groups |
| CN103724559B (zh) * | 2013-12-17 | 2016-08-17 | 中昊晨光化工研究院有限公司 | 一种由全氟聚醚过氧化物合成全氟聚醚的方法 |
| JP2017105945A (ja) * | 2015-12-10 | 2017-06-15 | ダイキン工業株式会社 | 過酸化パーフルオロポリオキシアルキレン化合物の製造方法 |
| CN108440748B (zh) * | 2018-04-09 | 2020-06-16 | 浙江巨化技术中心有限公司 | 一种高分子量带有酰氟基团全氟聚醚过氧化物的合成方法 |
| KR102240973B1 (ko) * | 2019-06-13 | 2021-04-15 | 한국화학연구원 | 과산화 퍼플루오로폴리에테르의 과산화물 제거를 통한 퍼플루오로폴리에테르의 제조장치 및 제조방법 |
| CN114276532B (zh) * | 2021-12-29 | 2024-11-15 | 山东东岳高分子材料有限公司 | 一种过氧化全氟聚醚的制备方法及装置 |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4451646A (en) * | 1967-02-09 | 1984-05-29 | Montedison, S.P.A. | High molecular weight polymeric perfluorinated copolyethers and process for their preparation from tetrafluoroethylene |
| US3715378A (en) * | 1967-02-09 | 1973-02-06 | Montedison Spa | Fluorinated peroxy polyether copolymers and method for preparing them from tetrafluoroethylene |
| US3847978A (en) * | 1968-07-01 | 1974-11-12 | Montedison Spa | Perfluorinated linear polyethers having reactive terminal groups at both ends of the chain and process for the preparation thereof |
| IT1229845B (it) * | 1989-04-20 | 1991-09-13 | Ausimont Srl | Procedimento per la preparazione di perfluoropolieteri perossidici. |
| IT1249319B (it) * | 1991-04-26 | 1995-02-22 | Ausimont Spa | Perfluoropolieteri ad elevata viscosita' e basso contenuto di ossigeno perossidico, e procedimento per la loro preparazione |
| US5182342A (en) * | 1992-02-28 | 1993-01-26 | E. I. Du Pont De Nemours And Company | Hydrofluorocarbon solvents for fluoromonomer polymerization |
| IT1264977B1 (it) * | 1993-11-17 | 1996-10-17 | Ausimont Spa | Processo per preparare perfluoropolietri |
| US5658962A (en) * | 1994-05-20 | 1997-08-19 | Minnesota Mining And Manufacturing Company | Omega-hydrofluoroalkyl ethers, precursor carboxylic acids and derivatives thereof, and their preparation and application |
| JP3349513B2 (ja) * | 1994-05-24 | 2002-11-25 | エーザイ株式会社 | ２，６−ジ−ヨードフェノール−４−イルを少なくとも２ケ含む化合物とヨードアレルギー診断薬 |
| IT1274591B (it) * | 1994-08-05 | 1997-07-18 | Ausimont Spa | Processo per la preparazione di poliossiperfluoroalcani idrogeno terminati |
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