[go: up one dir, main page]

GB1467970A - Purification of polyethers - Google Patents

Purification of polyethers

Info

Publication number
GB1467970A
GB1467970A GB2483974A GB2483974A GB1467970A GB 1467970 A GB1467970 A GB 1467970A GB 2483974 A GB2483974 A GB 2483974A GB 2483974 A GB2483974 A GB 2483974A GB 1467970 A GB1467970 A GB 1467970A
Authority
GB
United Kingdom
Prior art keywords
polyethers
treatment
purification
ethylene oxide
mixture
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
GB2483974A
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.)
Imperial Chemical Industries Ltd
Original Assignee
Imperial Chemical Industries Ltd
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 Imperial Chemical Industries Ltd filed Critical Imperial Chemical Industries Ltd
Priority to GB2483974A priority Critical patent/GB1467970A/en
Publication of GB1467970A publication Critical patent/GB1467970A/en
Expired 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)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

1467970 Purification of polyethers IMPERIAL CHEMICAL INDUSTRIES Ltd 2 May 1975 [5 June 1974] 24839/74 Heading C3R Polyethers, which are liquid reaction products obtained by sequential addition of ethylene oxide and at least one other alkylene oxide (e.g. propylene oxide) to an active hydrogen containing compound, are purified by treatment with a mixture containing 1 part by wt. of active carbon and 2À5-7À5 parts by wt. of synthetic magnesium silicate. From 0À5-15% by wt. of the mixture may be used, based on the weight of the polyether treated. Examples relate to the treatment of an ethylene oxide tipped oxypropylated glycerol (M.W. 5300, oxyethylene content 14%).
GB2483974A 1975-05-02 1975-05-02 Purification of polyethers Expired GB1467970A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2483974A GB1467970A (en) 1975-05-02 1975-05-02 Purification of polyethers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2483974A GB1467970A (en) 1975-05-02 1975-05-02 Purification of polyethers

Publications (1)

Publication Number Publication Date
GB1467970A true GB1467970A (en) 1977-03-23

Family

ID=10218062

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2483974A Expired GB1467970A (en) 1975-05-02 1975-05-02 Purification of polyethers

Country Status (1)

Country Link
GB (1) GB1467970A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0107080A1 (en) * 1982-09-29 1984-05-02 The B.F. GOODRICH Company Decolorizing polymers of epihalohydrin
EP0181621A3 (en) * 1984-11-13 1988-05-11 Asahi Kasei Kogyo Kabushiki Kaisha Process for purification of polyalkylene ether
EP0283298A3 (en) * 1987-03-20 1989-10-18 Arco Chemical Technology Inc. Purification of polyols prepared using double metal cyanide complex catalysts
GB2246573A (en) * 1990-08-01 1992-02-05 Sandoz Ltd Purified polylactides
CN111763309A (en) * 2020-07-22 2020-10-13 万华化学（烟台）容威聚氨酯有限公司 Refining method for reducing aldehyde content and odor in polyether polyol

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0107080A1 (en) * 1982-09-29 1984-05-02 The B.F. GOODRICH Company Decolorizing polymers of epihalohydrin
EP0181621A3 (en) * 1984-11-13 1988-05-11 Asahi Kasei Kogyo Kabushiki Kaisha Process for purification of polyalkylene ether
EP0283298A3 (en) * 1987-03-20 1989-10-18 Arco Chemical Technology Inc. Purification of polyols prepared using double metal cyanide complex catalysts
JP2538302B2 (en) 1987-03-20 1996-09-25 アルコ・ケミカル・カンパニー Purification method of polyetherpolyol prepared using double metal cyanide composite catalyst
GB2246573A (en) * 1990-08-01 1992-02-05 Sandoz Ltd Purified polylactides
GB2246573B (en) * 1990-08-01 1994-05-11 Sandoz Ltd Purified polylactides
CN111763309A (en) * 2020-07-22 2020-10-13 万华化学（烟台）容威聚氨酯有限公司 Refining method for reducing aldehyde content and odor in polyether polyol
CN111763309B (en) * 2020-07-22 2023-01-13 万华化学（烟台）容威聚氨酯有限公司 Refining method for reducing aldehyde content and odor in polyether polyol

Similar Documents

Publication Publication Date Title
JPS5271000A (en) Production of hydrogen peroxide
GB1494538A (en) Stabilised polyalkylene polyols and polyurethane foams prepared therefrom
GB1388497A (en) Process for the separation of components from gas mixtures
GB1468982A (en) Process for production of activated carbon spheres
ES481717A1 (en) Process of removing nitrogen oxides from gaseous mixtures.
JPS5695126A (en) Removing method of oxygen from gas containing unsaturated hydrocarbon
GB977969A (en) Hydrogen recovery
GB1467970A (en) Purification of polyethers
JPS5217409A (en) Process for preparation of hexafluoropropanone-2
JPS5241193A (en) Treating process of active carbon having not property reducing nitroge n dioxide
JPS523005A (en) Process for stabilization of furon
DE3374558D1 (en) Process for the stabilization of chlorinated hydrocarbons, chlorinated hydrocarbons stabilized according to the process and their use
JPS5670837A (en) Ethylene removing agent
JPS5275686A (en) Treatment of surplus ozone
GB1451456A (en) Method of increasing the quantity of acetylene storable in a container
JPS51148692A (en) Method for treating the active carbon without reducing the nitrogen di oxide
JPS5212984A (en) Purification of urokinase
ES446211A1 (en) Process for regenerating palladium catalysts
JPS532322A (en) Dephosphorizing agent for molten pig iron
ES256194A1 (en) Method of killing fungi with bis (triphenyltin) oxide
JPS52133924A (en) Preparation of azodicarbonamides
JPS5253999A (en) Metod for treating compositions containng free isocyanates
GB1141538A (en) Columbium addition agent
ES483904A1 (en) Process for preparing urethanes.
JPS51143913A (en) Method of transpoting compressed gas containing vapor of hydrocarbon s ystem compound

Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee