USB414129I5 - - Google Patents

Info

Publication number
USB414129I5
USB414129I5 US41412973A USB414129I5 US B414129 I5 USB414129 I5 US B414129I5 US 41412973 A US41412973 A US 41412973A US B414129 I5 USB414129 I5 US B414129I5
Authority
US
United States
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.)
Pending
Application number
Other languages
English (en)
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to US414129A priority Critical patent/US3925484A/en
Priority to CA213,147A priority patent/CA1038408A/en
Priority to GB4831574A priority patent/GB1453753A/en
Priority to IT29211/74A priority patent/IT1025516B/it
Priority to FR7436921A priority patent/FR2250786B1/fr
Priority to DE2453114A priority patent/DE2453114C2/de
Priority to JP49128170A priority patent/JPS5747687B2/ja
Publication of USB414129I5 publication Critical patent/USB414129I5/en
Application granted granted Critical
Publication of US3925484A publication Critical patent/US3925484A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • C08G65/30—Post-polymerisation treatment, e.g. recovery, purification, drying

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Polyethers (AREA)
  • Manufacture Of Macromolecular Shaped Articles (AREA)
  • Polyurethanes Or Polyureas (AREA)
  • Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
US414129A 1973-11-08 1973-11-08 Process for making polytetramethylene ether glycol having a narrow molecular weight distribution Expired - Lifetime US3925484A (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
US414129A US3925484A (en) 1973-11-08 1973-11-08 Process for making polytetramethylene ether glycol having a narrow molecular weight distribution
CA213,147A CA1038408A (en) 1973-11-08 1974-11-06 Process for making polytetramethylene ether glycol having a narrow molecular weight distribution
IT29211/74A IT1025516B (it) 1973-11-08 1974-11-07 Processo per la produzione di po litetrametilenetereglicolavente una ristratta distribuzione deipesi molecolari
FR7436921A FR2250786B1 (de) 1973-11-08 1974-11-07
GB4831574A GB1453753A (en) 1973-11-08 1974-11-07 Polytetramethylene ether glycol
DE2453114A DE2453114C2 (de) 1973-11-08 1974-11-08 Verfahren zum Herstellen von Polytetramethylenätherglykol mit enger Molekulargewichtsverteilung
JP49128170A JPS5747687B2 (de) 1973-11-08 1974-11-08

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US414129A US3925484A (en) 1973-11-08 1973-11-08 Process for making polytetramethylene ether glycol having a narrow molecular weight distribution

Publications (2)

Publication Number Publication Date
USB414129I5 true USB414129I5 (de) 1975-01-28
US3925484A US3925484A (en) 1975-12-09

Family

ID=23640073

Family Applications (1)

Application Number Title Priority Date Filing Date
US414129A Expired - Lifetime US3925484A (en) 1973-11-08 1973-11-08 Process for making polytetramethylene ether glycol having a narrow molecular weight distribution

Country Status (7)

Country Link
US (1) US3925484A (de)
JP (1) JPS5747687B2 (de)
CA (1) CA1038408A (de)
DE (1) DE2453114C2 (de)
FR (1) FR2250786B1 (de)
GB (1) GB1453753A (de)
IT (1) IT1025516B (de)

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4115408A (en) * 1977-08-05 1978-09-19 E.I. Dupont De Nemours And Company Conversion of poly(tetramethylene ether) glycol in aqueous effluent stream to tetrahydrofuran
US4202964A (en) * 1978-03-16 1980-05-13 E. I. Du Pont De Nemours And Company Method for reducing oligomeric cyclic ether content of a polymerizate
US4192943A (en) * 1978-06-13 1980-03-11 E. I. Du Pont De Nemours And Company Method for reducing oligomeric cyclic ether content of a polymerizate
DE3042960A1 (de) * 1980-11-14 1982-07-08 Basf Ag, 6700 Ludwigshafen Verfahren zur depolymerisation von polytetramethylenglykolether
JPS60149623A (ja) * 1984-01-13 1985-08-07 Toyobo Co Ltd ポリウレタン弾性体成形品の製造方法
DE3505152A1 (de) * 1985-02-15 1986-09-04 Basf Ag, 6700 Ludwigshafen Verfahren zur einengung der molekulargewichtsverteilung von polytetrahydrofuran
DE3607946A1 (de) * 1986-03-11 1987-09-17 Basf Ag Verfahren zur einengung der molekulargewichtsverteilung von polytetrahydrofuran und von copolymerisaten aus tetrahydrofuran und alkylenoxiden
JPH0794547B2 (ja) * 1986-04-10 1995-10-11 三菱化学株式会社 ポリテトラメチレンエーテルグリコールの改質法
US4954658A (en) * 1988-05-19 1990-09-04 E. I. Du Pont De Nemours And Company Process for reducing fluoride levels in poly(tetramethylene ether) glycol
US4988797B1 (en) * 1989-03-14 1993-12-28 Cationic polymerization of cyclic ethers
DE4205984C1 (en) * 1992-02-27 1993-05-06 Bruno Prof. Dr. 7822 St Blasien De Vollmert Mfg. poly:tetra:hydro:furan or poly:tetra:methylene glycol - by cationic polymerisation of THF in presence of initiator for narrow mol. wt. distribution
US5180857A (en) * 1992-03-10 1993-01-19 E. I. Du Pont De Nemours And Company Reduction of molecular weight of poly(tetramethylene ether) glycol
US5541346A (en) * 1992-10-21 1996-07-30 E. I. Du Pont De Nemours And Company Polymerization of, and depolymerization to, cyclic ethers using selected metal compound catalysts
US5434315A (en) * 1994-02-22 1995-07-18 E. I. Du Pont De Nemours And Company Reducing molecular weight polydispersity of polyether glycols by membrane fractionation
US6355846B1 (en) 2000-10-17 2002-03-12 E. I. Du Pont De Nemours And Company Narrowing of poly (tetramethylene ether) glycol
JP4800568B2 (ja) * 2002-12-20 2011-10-26 保土谷化学工業株式会社 分子量分布の狭められたポリエーテルポリオールの製造方法
CN102227241A (zh) * 2008-11-27 2011-10-26 巴斯夫欧洲公司 蒸馏分离装置
US8372946B2 (en) * 2009-04-15 2013-02-12 Invista North America S.A R.L. Copolyether glycol manufacturing process
JP5778687B2 (ja) 2009-12-11 2015-09-16 インヴィスタ テクノロジーズ エスアエルエル オリゴマー環状エーテルの解重合
US20150166497A1 (en) * 2012-06-25 2015-06-18 Invista North America S.A.R.L. Controlled partial depolymerization process for polytetramethylene ether glycol molecular weight distribution narrowing
EP3222648B1 (de) * 2014-11-20 2020-01-01 Mitsubishi Chemical Corporation Polytetramethylene ether glycol, verfahren zur herstellung von polytetramethylene etherpolyol, polyesterelastomer und polyurethan
KR102492665B1 (ko) 2017-09-29 2023-01-26 에스케이케미칼 주식회사 폴리트리메틸렌 에테르 글리콜 및 이의 제조 방법

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2751419A (en) * 1954-09-13 1956-06-19 Du Pont Process for purification of polytetramethyleneether
US3358042A (en) * 1963-09-20 1967-12-12 Quaker Oats Co Process for recovering polytetramethylene ether glycol
US3359332A (en) * 1963-07-25 1967-12-19 Monsanto Co Preparation of polyoxytetra-methylene glycol
US3461169A (en) * 1967-07-28 1969-08-12 Eastman Kodak Co Solvent extraction of polymeric glycols using acetonitrile
US3467679A (en) * 1966-03-21 1969-09-16 Du Pont Production of tetrahydrofuran from 1,4-butanediol
US3478109A (en) * 1967-07-28 1969-11-11 Eastman Kodak Co Solvent extraction of polymeric glycols using methanol

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2751419A (en) * 1954-09-13 1956-06-19 Du Pont Process for purification of polytetramethyleneether
US3359332A (en) * 1963-07-25 1967-12-19 Monsanto Co Preparation of polyoxytetra-methylene glycol
US3358042A (en) * 1963-09-20 1967-12-12 Quaker Oats Co Process for recovering polytetramethylene ether glycol
US3467679A (en) * 1966-03-21 1969-09-16 Du Pont Production of tetrahydrofuran from 1,4-butanediol
US3461169A (en) * 1967-07-28 1969-08-12 Eastman Kodak Co Solvent extraction of polymeric glycols using acetonitrile
US3478109A (en) * 1967-07-28 1969-11-11 Eastman Kodak Co Solvent extraction of polymeric glycols using methanol

Also Published As

Publication number Publication date
DE2453114C2 (de) 1983-05-26
JPS5747687B2 (de) 1982-10-12
US3925484A (en) 1975-12-09
IT1025516B (it) 1978-08-30
JPS5075697A (de) 1975-06-20
CA1038408A (en) 1978-09-12
GB1453753A (en) 1976-10-27
FR2250786A1 (de) 1975-06-06
DE2453114A1 (de) 1975-05-15
FR2250786B1 (de) 1980-11-07

Similar Documents

Publication Publication Date Title
AU465372B2 (de)
AR201235Q (de)
AR201231Q (de)
FR2250786B1 (de)
AU465434B2 (de)
AU450229B2 (de)
AR201229Q (de)
AR199451A1 (de)
AU466283B2 (de)
AU461342B2 (de)
AU447540B2 (de)
AR210729A1 (de)
AR195311A1 (de)
AR195948A1 (de)
AR200256A1 (de)
AR196382A1 (de)
AR200885A1 (de)
AR197627A1 (de)
AR201432A1 (de)
AU1891376A (de)
AR196123Q (de)
AR196212Q (de)
BG19479A1 (de)
BG19331A1 (de)
AU470923A (de)