CA1121943A - Method for reducing oligomeric cyclic ether content of a polymerizate - Google Patents

Method for reducing oligomeric cyclic ether content of a polymerizate

Info

Publication number
CA1121943A
CA1121943A CA000323441A CA323441A CA1121943A CA 1121943 A CA1121943 A CA 1121943A CA 000323441 A CA000323441 A CA 000323441A CA 323441 A CA323441 A CA 323441A CA 1121943 A CA1121943 A CA 1121943A
Authority
CA
Canada
Prior art keywords
polymerizate
ion exchange
resin
exchange resin
weight
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
Application number
CA000323441A
Other languages
English (en)
French (fr)
Inventor
Gerfried Pruckmayr
Ivan M. Robinson
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
EIDP Inc
Original Assignee
EI Du Pont de Nemours and Co
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 by EI Du Pont de Nemours and Co filed Critical EI Du Pont de Nemours and Co
Application granted granted Critical
Publication of CA1121943A publication Critical patent/CA1121943A/en
Expired legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G65/00Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule
    • C08G65/02Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring
    • C08G65/04Macromolecular 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
    • C08G65/06Cyclic ethers having no atoms other than carbon and hydrogen outside the ring
    • C08G65/16Cyclic ethers having four or more ring atoms
    • C08G65/20Tetrahydrofuran
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00Polymeric products of isocyanates or isothiocyanates
    • C08G18/06Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/40High-molecular-weight compounds
    • C08G18/48Polyethers
    • C08G18/4854Polyethers containing oxyalkylene groups having four carbon atoms in the alkylene group
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G65/00Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule
    • C08G65/02Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring
    • C08G65/30Post-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)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Polyethers (AREA)
  • Polyurethanes Or Polyureas (AREA)
  • Heterocyclic Compounds That Contain Two Or More Ring Oxygen Atoms (AREA)
CA000323441A 1978-03-16 1979-03-14 Method for reducing oligomeric cyclic ether content of a polymerizate Expired CA1121943A (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US88733278A 1978-03-16 1978-03-16
US887,332 1978-03-16
US962,311 1978-11-27
US05/962,311 US4202964A (en) 1978-03-16 1978-11-27 Method for reducing oligomeric cyclic ether content of a polymerizate

Publications (1)

Publication Number Publication Date
CA1121943A true CA1121943A (en) 1982-04-13

Family

ID=27128836

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000323441A Expired CA1121943A (en) 1978-03-16 1979-03-14 Method for reducing oligomeric cyclic ether content of a polymerizate

Country Status (7)

Country Link
US (1) US4202964A (OSRAM)
EP (1) EP0004536B1 (OSRAM)
JP (1) JPS54145795A (OSRAM)
CA (1) CA1121943A (OSRAM)
DE (1) DE2961382D1 (OSRAM)
ES (1) ES478739A1 (OSRAM)
PL (1) PL214145A1 (OSRAM)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4306058A (en) * 1980-11-19 1981-12-15 E. I. Du Pont De Nemours And Company Method for reducing oligomeric cyclic ether content of a polymerizate
US4481123A (en) * 1981-05-06 1984-11-06 Bayer Aktiengesellschaft Polyethers, their preparation and their use as lubricants
JPS59189120A (ja) * 1983-04-13 1984-10-26 Daicel Chem Ind Ltd 新規なポリアルキレンエ−テルグリコ−ル共重合体
CA1216597A (en) * 1983-05-23 1987-01-13 Atsushi Aoshima Process for producing polyetherglycol
US4500705A (en) * 1984-01-09 1985-02-19 E. I. Du Pont De Nemours And Company Method for reducing oligomeric cyclic ether content of a polymerizate
EP0158229B1 (en) * 1984-03-28 1988-06-22 Asahi Kasei Kogyo Kabushiki Kaisha Process for producing polyether polyol, the produced polyether polyol and polyurethane
JPS61160654U (OSRAM) * 1985-03-26 1986-10-04
US4604210A (en) * 1985-04-25 1986-08-05 The Dow Chemical Company Method for removing cyclic phosphorus contaminants from organic substrates
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
WO1995002625A2 (en) * 1993-07-16 1995-01-26 E.I. Du Pont De Nemours And Company Polymerization/depolymerization catalyst for polyethers
US5344964A (en) * 1993-11-24 1994-09-06 Industrial Technology Research Institute Method for preparing ester end-capped polyalkylene ether
ES2465519T3 (es) * 2009-04-15 2014-06-06 Invista Technologies S.À.R.L. Procedimiento de fabricación de copoliéter glicol
ES2525364T3 (es) * 2009-04-15 2014-12-22 Invista Technologies S.À.R.L. Proceso mejorado para la fabricación de glicol de copoliéter
EP2510033B1 (en) * 2009-12-11 2015-01-21 Invista Technologies S.à.r.l. Improved elastomeric compositions
CN102652132B (zh) * 2009-12-11 2015-03-25 因温斯特技术公司 低聚环醚的解聚
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

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB854958A (en) * 1957-03-14 1960-11-23 Bayer Ag Copolymerising mono-epoxides with tetrahydrofurane
US3359332A (en) * 1963-07-25 1967-12-19 Monsanto Co Preparation of polyoxytetra-methylene glycol
US3405105A (en) * 1965-11-12 1968-10-08 Phillips Petroleum Co Polymerization of tetrahydrofuran and derivatives thereof with organic sulfonic acids
US3425999A (en) * 1966-07-11 1969-02-04 Wyandotte Chemicals Corp Tetrahydrofuran-ethylene oxide polyether urethane-urea polymers
US3692569A (en) * 1970-02-12 1972-09-19 Du Pont Surface-activated fluorocarbon objects
US3925484A (en) * 1973-11-08 1975-12-09 Du Pont Process for making polytetramethylene ether glycol having a narrow molecular weight distribution
US4071492A (en) * 1976-04-07 1978-01-31 The Firestone Tire & Rubber Company Polyurethane-urea elastomers based on propylene oxide-tetrahydrofuran copolymers
US4127513A (en) * 1977-11-09 1978-11-28 E. I. Du Pont De Nemours And Company Method for preparing polyether glycols

Also Published As

Publication number Publication date
US4202964A (en) 1980-05-13
JPS5725566B2 (OSRAM) 1982-05-31
EP0004536A1 (en) 1979-10-17
EP0004536B1 (en) 1981-11-25
PL214145A1 (OSRAM) 1980-01-02
JPS54145795A (en) 1979-11-14
DE2961382D1 (en) 1982-01-28
ES478739A1 (es) 1979-07-01

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Legal Events

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