JPS6111969B2 - - Google Patents
Info
- Publication number
- JPS6111969B2 JPS6111969B2 JP52035534A JP3553477A JPS6111969B2 JP S6111969 B2 JPS6111969 B2 JP S6111969B2 JP 52035534 A JP52035534 A JP 52035534A JP 3553477 A JP3553477 A JP 3553477A JP S6111969 B2 JPS6111969 B2 JP S6111969B2
- Authority
- JP
- Japan
- Prior art keywords
- catalyst
- reaction
- carbon atoms
- thf
- reactor
- 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
- 239000003054 catalyst Substances 0.000 claims description 86
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 claims description 82
- WFDIJRYMOXRFFG-UHFFFAOYSA-N Acetic anhydride Chemical group CC(=O)OC(C)=O WFDIJRYMOXRFFG-UHFFFAOYSA-N 0.000 claims description 51
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 claims description 40
- 229920000642 polymer Polymers 0.000 claims description 31
- 125000004432 carbon atom Chemical group C* 0.000 claims description 20
- 239000002243 precursor Substances 0.000 claims description 20
- 239000000178 monomer Substances 0.000 claims description 18
- 238000006116 polymerization reaction Methods 0.000 claims description 17
- 238000000034 method Methods 0.000 claims description 14
- 229920001577 copolymer Polymers 0.000 claims description 12
- -1 poly(tetramethylene ether) Polymers 0.000 claims description 12
- 239000002253 acid Substances 0.000 claims description 10
- 239000001257 hydrogen Substances 0.000 claims description 9
- 229910052739 hydrogen Inorganic materials 0.000 claims description 9
- 125000001931 aliphatic group Chemical group 0.000 claims description 7
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 claims description 7
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 6
- 125000002029 aromatic hydrocarbon group Chemical group 0.000 claims description 6
- UUAGAQFQZIEFAH-UHFFFAOYSA-N chlorotrifluoroethylene Chemical group FC(F)=C(F)Cl UUAGAQFQZIEFAH-UHFFFAOYSA-N 0.000 claims description 6
- 229910052731 fluorine Inorganic materials 0.000 claims description 6
- 239000011737 fluorine Substances 0.000 claims description 6
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 claims description 4
- 229910052736 halogen Inorganic materials 0.000 claims description 4
- 150000002367 halogens Chemical class 0.000 claims description 4
- 125000005647 linker group Chemical group 0.000 claims description 4
- 150000001244 carboxylic acid anhydrides Chemical class 0.000 claims description 3
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 claims description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical class [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 2
- 150000001266 acyl halides Chemical class 0.000 claims description 2
- 125000001153 fluoro group Chemical group F* 0.000 claims description 2
- 125000005843 halogen group Chemical group 0.000 claims description 2
- 230000000379 polymerizing effect Effects 0.000 claims description 2
- 150000002431 hydrogen Chemical class 0.000 claims 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims 1
- 229910052799 carbon Inorganic materials 0.000 claims 1
- 239000012429 reaction media Substances 0.000 claims 1
- 238000006243 chemical reaction Methods 0.000 description 74
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 33
- 239000000203 mixture Substances 0.000 description 31
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 30
- 239000000376 reactant Substances 0.000 description 26
- 239000000047 product Substances 0.000 description 23
- 150000002500 ions Chemical class 0.000 description 15
- 238000006136 alcoholysis reaction Methods 0.000 description 11
- 150000001732 carboxylic acid derivatives Chemical class 0.000 description 9
- 238000001914 filtration Methods 0.000 description 8
- 239000002002 slurry Substances 0.000 description 8
- 239000000292 calcium oxide Substances 0.000 description 7
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 238000004458 analytical method Methods 0.000 description 6
- 239000011541 reaction mixture Substances 0.000 description 6
- XBDQKXXYIPTUBI-UHFFFAOYSA-M Propionate Chemical compound CCC([O-])=O XBDQKXXYIPTUBI-UHFFFAOYSA-M 0.000 description 5
- 125000000217 alkyl group Chemical group 0.000 description 5
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical group [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 5
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 125000000542 sulfonic acid group Chemical group 0.000 description 5
- 238000005292 vacuum distillation Methods 0.000 description 5
- JWUJQDFVADABEY-UHFFFAOYSA-N 2-methyltetrahydrofuran Chemical compound CC1CCCO1 JWUJQDFVADABEY-UHFFFAOYSA-N 0.000 description 4
- LJPCNSSTRWGCMZ-UHFFFAOYSA-N 3-methyloxolane Chemical compound CC1CCOC1 LJPCNSSTRWGCMZ-UHFFFAOYSA-N 0.000 description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 4
- KXKVLQRXCPHEJC-UHFFFAOYSA-N acetic acid trimethyl ester Natural products COC(C)=O KXKVLQRXCPHEJC-UHFFFAOYSA-N 0.000 description 4
- 229910052791 calcium Inorganic materials 0.000 description 4
- 239000011575 calcium Substances 0.000 description 4
- AYCANDRGVPTASA-UHFFFAOYSA-N 1-bromo-1,2,2-trifluoroethene Chemical group FC(F)=C(F)Br AYCANDRGVPTASA-UHFFFAOYSA-N 0.000 description 3
- DTQVDTLACAAQTR-UHFFFAOYSA-N Trifluoroacetic acid Chemical compound OC(=O)C(F)(F)F DTQVDTLACAAQTR-UHFFFAOYSA-N 0.000 description 3
- 150000004703 alkoxides Chemical class 0.000 description 3
- 150000008064 anhydrides Chemical class 0.000 description 3
- 229910052788 barium Inorganic materials 0.000 description 3
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000009835 boiling Methods 0.000 description 3
- 150000002148 esters Chemical class 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- UQSQSQZYBQSBJZ-UHFFFAOYSA-N fluorosulfonic acid Chemical compound OS(F)(=O)=O UQSQSQZYBQSBJZ-UHFFFAOYSA-N 0.000 description 3
- HCDGVLDPFQMKDK-UHFFFAOYSA-N hexafluoropropylene Chemical group FC(F)=C(F)C(F)(F)F HCDGVLDPFQMKDK-UHFFFAOYSA-N 0.000 description 3
- 150000004679 hydroxides Chemical class 0.000 description 3
- 239000002198 insoluble material Substances 0.000 description 3
- 235000012245 magnesium oxide Nutrition 0.000 description 3
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical class [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 3
- WYVAMUWZEOHJOQ-UHFFFAOYSA-N propionic anhydride Chemical compound CCC(=O)OC(=O)CC WYVAMUWZEOHJOQ-UHFFFAOYSA-N 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- 229910052712 strontium Inorganic materials 0.000 description 3
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical compound C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 description 2
- 229920000557 Nafion® Polymers 0.000 description 2
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- ORWKVZNEPHTCQE-UHFFFAOYSA-N acetic formic anhydride Chemical compound CC(=O)OC=O ORWKVZNEPHTCQE-UHFFFAOYSA-N 0.000 description 2
- 150000007513 acids Chemical class 0.000 description 2
- 150000007933 aliphatic carboxylic acids Chemical class 0.000 description 2
- 125000005907 alkyl ester group Chemical group 0.000 description 2
- 125000002947 alkylene group Chemical group 0.000 description 2
- QVQLCTNNEUAWMS-UHFFFAOYSA-N barium oxide Chemical compound [Ba]=O QVQLCTNNEUAWMS-UHFFFAOYSA-N 0.000 description 2
- 239000006227 byproduct Substances 0.000 description 2
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 2
- 239000000920 calcium hydroxide Substances 0.000 description 2
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 2
- 238000005119 centrifugation Methods 0.000 description 2
- 238000010908 decantation Methods 0.000 description 2
- 125000000524 functional group Chemical group 0.000 description 2
- 150000002430 hydrocarbons Chemical group 0.000 description 2
- 238000002329 infrared spectrum Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 235000012254 magnesium hydroxide Nutrition 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- 229920002635 polyurethane Polymers 0.000 description 2
- 239000004814 polyurethane Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 230000008929 regeneration Effects 0.000 description 2
- 238000011069 regeneration method Methods 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- BQCIDUSAKPWEOX-UHFFFAOYSA-N 1,1-Difluoroethene Chemical compound FC(F)=C BQCIDUSAKPWEOX-UHFFFAOYSA-N 0.000 description 1
- LYCAGOQDEOWYGS-UHFFFAOYSA-N 1,2,2-trifluoroethenesulfonic acid Chemical compound OS(=O)(=O)C(F)=C(F)F LYCAGOQDEOWYGS-UHFFFAOYSA-N 0.000 description 1
- VZSRBBMJRBPUNF-UHFFFAOYSA-N 2-(2,3-dihydro-1H-inden-2-ylamino)-N-[3-oxo-3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propyl]pyrimidine-5-carboxamide Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)C(=O)NCCC(N1CC2=C(CC1)NN=N2)=O VZSRBBMJRBPUNF-UHFFFAOYSA-N 0.000 description 1
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 description 1
- WVDDGKGOMKODPV-UHFFFAOYSA-N Benzyl alcohol Chemical compound OCC1=CC=CC=C1 WVDDGKGOMKODPV-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
- 238000005481 NMR spectroscopy Methods 0.000 description 1
- XBDQKXXYIPTUBI-UHFFFAOYSA-N Propionic acid Chemical group CCC(O)=O XBDQKXXYIPTUBI-UHFFFAOYSA-N 0.000 description 1
- 229910006069 SO3H Inorganic materials 0.000 description 1
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- QYKIQEUNHZKYBP-UHFFFAOYSA-N Vinyl ether Chemical compound C=COC=C QYKIQEUNHZKYBP-UHFFFAOYSA-N 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 125000003277 amino group Chemical group 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 230000003078 antioxidant effect Effects 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 125000004429 atom Chemical group 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 229960004217 benzyl alcohol Drugs 0.000 description 1
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 125000002915 carbonyl group Chemical group [*:2]C([*:1])=O 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 150000001735 carboxylic acids Chemical class 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000007334 copolymerization reaction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 125000004185 ester group Chemical group 0.000 description 1
- 125000001033 ether group Chemical group 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000005048 flame photometry Methods 0.000 description 1
- XUCNUKMRBVNAPB-UHFFFAOYSA-N fluoroethene Chemical compound FC=C XUCNUKMRBVNAPB-UHFFFAOYSA-N 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 229920001519 homopolymer Polymers 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 238000011090 industrial biotechnology method and process Methods 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 239000012280 lithium aluminium hydride Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 150000002978 peroxides Chemical class 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
- 238000010183 spectrum analysis Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- OBTWBSRJZRCYQV-UHFFFAOYSA-N sulfuryl difluoride Chemical group FS(F)(=O)=O OBTWBSRJZRCYQV-UHFFFAOYSA-N 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- TXEYQDLBPFQVAA-UHFFFAOYSA-N tetrafluoromethane Chemical compound FC(F)(F)F TXEYQDLBPFQVAA-UHFFFAOYSA-N 0.000 description 1
- 238000004448 titration Methods 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 238000007039 two-step reaction Methods 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- 238000004260 weight control Methods 0.000 description 1
Landscapes
- Polyethers (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3553477A JPS52138598A (en) | 1976-03-31 | 1977-03-31 | Process for preparing poly*tetramethylene ether*glycol |
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US67255576A | 1976-03-31 | 1976-03-31 | |
| US67255676A | 1976-03-31 | 1976-03-31 | |
| US75121176A | 1976-12-16 | 1976-12-16 | |
| US76751077A | 1977-02-14 | 1977-02-14 | |
| JP3553477A JPS52138598A (en) | 1976-03-31 | 1977-03-31 | Process for preparing poly*tetramethylene ether*glycol |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS52138598A JPS52138598A (en) | 1977-11-18 |
| JPS6111969B2 true JPS6111969B2 (US20080293856A1-20081127-C00150.png) | 1986-04-05 |
Family
ID=27521709
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3553477A Granted JPS52138598A (en) | 1976-03-31 | 1977-03-31 | Process for preparing poly*tetramethylene ether*glycol |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS52138598A (US20080293856A1-20081127-C00150.png) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54162796A (en) * | 1978-06-14 | 1979-12-24 | Du Pont | Preparation of improved copolyether glycol |
| JPS5953285B2 (ja) * | 1978-06-29 | 1984-12-24 | イ−・アイ・デユ・ポン・ドウ・ヌム−ル・アンド・カンパニ− | 末端がエステル形のコポリエ−テルグリコ−ルの製法 |
| US5118869A (en) * | 1991-02-13 | 1992-06-02 | E. I. Du Pont De Nemours And Company | Polymerizing tetrahydrofuran to produce polytetramethylene ether glycol using a modified fluorinated resin catalyst containing sulfonic acid groups |
| JP5414049B2 (ja) * | 2008-10-10 | 2014-02-12 | 独立行政法人産業技術総合研究所 | コハク酸系共重合体の製造方法とその共重合体 |
| BRPI0923998A2 (pt) * | 2009-04-15 | 2016-01-26 | Invista Tech Sarl | método para tratar resina de ácido perfluorosulfônico, resina de ácido perfluorosulfônico e processo para fabricar poliéter glicol ou copoliéter glicol |
| KR101759358B1 (ko) * | 2009-08-24 | 2017-07-18 | 인비스타 테크놀러지스 에스.에이 알.엘. | 개선된 폴리에테르 글리콜 제조 방법 |
| JPWO2018151057A1 (ja) * | 2017-02-16 | 2019-12-12 | 株式会社クラレ | コポリエーテルポリオール、ポリウレタンおよびコポリエーテルポリオールの製造方法 |
-
1977
- 1977-03-31 JP JP3553477A patent/JPS52138598A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS52138598A (en) | 1977-11-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4163115A (en) | Preparation of esters of poly-(tetramethylene ether) glycol | |
| US4153786A (en) | Method for preparing ester end-capped copolyether glycols | |
| JP2976383B2 (ja) | 酸性酸化ジルコニア触媒を用いたポリテトラメチレンエーテルグリコールの製造方法 | |
| EP0571506B1 (en) | Polymerizing tetrahydrofuran to produce polytetramethylene ether glycol using a modified fluorinated resin catalyst containing sulfonic acid groups | |
| JPS6111969B2 (US20080293856A1-20081127-C00150.png) | ||
| GB1575529A (en) | Polytetramethylene ether glycol esters | |
| US3637633A (en) | Peroxy compounds | |
| US5130470A (en) | Polymerization of tetrahydrofuran using a fluorinated acidic catalyst and maleic acid/maleic anhydride mixture as molecular weight control agent | |
| EP0160487A2 (en) | Fluoroolefin polymerization process | |
| EP0358589B1 (en) | Synthesis of high vinyl polybutadiene utilizing a molybdenum catalyst system | |
| JPS637571B2 (US20080293856A1-20081127-C00150.png) | ||
| JP3901219B2 (ja) | ポリテトラメチレンエーテルの二酢酸エステルを回収するための改良された方法 | |
| EP0770099B1 (en) | Process for preparing poly(vinyl trifluoroacetate) and poly(vinyl trifluoroacetate/vinyl ester) copolymers in supercritical co 2? | |
| US3839313A (en) | Catalysts for the polymerization of olefins | |
| EP0939752B1 (en) | Manufacture of fluorinated compounds | |
| JP2000501766A (ja) | ポリテトラメチレンエーテルの二酢酸エステルを製造するための改良された方法 | |
| JPS6129366B2 (US20080293856A1-20081127-C00150.png) | ||
| CA1094100A (en) | Preparation of esters of poly-(tetramethylene ether) glycol | |
| US3576763A (en) | Organic vanadyl fluorides and their use in coordination catalysts | |
| JPS6147857B2 (US20080293856A1-20081127-C00150.png) | ||
| JPS6251943B2 (US20080293856A1-20081127-C00150.png) | ||
| CA1088102A (en) | Method for preparing copolyether glycols | |
| CN115975168A (zh) | 一种室温条件下六氟环氧丙烷可控聚合的方法 | |
| JPS5837286B2 (ja) | 低分子量の第三級アルコ−ルを製造する方法 | |
| JP3314396B2 (ja) | ジアシル型ポリメリックペルオキシド及びその用途 |
