GB1377486A - Polyether purification process - Google Patents

Polyether purification process

Info

Publication number
GB1377486A
GB1377486A GB472271A GB472271A GB1377486A GB 1377486 A GB1377486 A GB 1377486A GB 472271 A GB472271 A GB 472271A GB 472271 A GB472271 A GB 472271A GB 1377486 A GB1377486 A GB 1377486A
Authority
GB
United Kingdom
Prior art keywords
polyethers
condensation product
propylene oxide
treatment
feb
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
GB472271A
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 GB472271A priority Critical patent/GB1377486A/en
Priority to AU38877/72A priority patent/AU3887772A/en
Priority to NL7201819A priority patent/NL7201819A/xx
Priority to IT2054672A priority patent/IT961142B/en
Priority to ES399844A priority patent/ES399844A1/en
Publication of GB1377486A publication Critical patent/GB1377486A/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)
  • Polyesters Or Polycarbonates (AREA)

Abstract

1377486 Polyethers IMPERIAL CHEMICAL INDUSTRIES Ltd 2 Feb 1972 [16 Feb 1971] 4722/71 Heading C2C [Also in Division C3] Polyethers contaminated with basic inorganic materials are purified by treatment in the presence of water with a compound containing at least one carboxylic acid group and at least two hydroxyl groups, suitably tartaric acid. Treatment temperatures preferably range from 25‹ to 150‹ C. Volatile material including water may be removed by subsequent heating under reduced pressure, and a further filtration step removes insoluble material. The acid-treated material may be optionally treated with an insoluble basic material and also with an adsorbent material to remove coloured impurities. Polyethers suitable for treatment include those having a hydroxyl equivalent weight of from 60 to 3000 obtained by the polymerization of one or more alkylene oxides in the presence of an alkaline catalyst and optional amounts of compounds containing one or more active hydrogen atoms. Examples describe the preparation and purification of ethylene oxide endcapped glycerol-propylene oxide condensation products (M.W. 3500), of a tolylene diaminepropylene oxide condensation product (M.W. 470), of a low molecular weight condensation product of propylene oxide and a mixture of triethanolamine and tolylene diamine, and of a glycerol-propylene oxide condensation product (M.W. 310).
GB472271A 1971-02-16 1971-02-16 Polyether purification process Expired GB1377486A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
GB472271A GB1377486A (en) 1971-02-16 1971-02-16 Polyether purification process
AU38877/72A AU3887772A (en) 1971-02-16 1972-02-10 Purification process
NL7201819A NL7201819A (en) 1971-02-16 1972-02-11
IT2054672A IT961142B (en) 1971-02-16 1972-02-14 PROCESS FOR REMOVING IMPURITIES OF INORGANIC BASES FROM POLYETER MATERIALS
ES399844A ES399844A1 (en) 1971-02-16 1972-02-16 Polyether purification process

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB472271A GB1377486A (en) 1971-02-16 1971-02-16 Polyether purification process

Publications (1)

Publication Number Publication Date
GB1377486A true GB1377486A (en) 1974-12-18

Family

ID=9782557

Family Applications (1)

Application Number Title Priority Date Filing Date
GB472271A Expired GB1377486A (en) 1971-02-16 1971-02-16 Polyether purification process

Country Status (5)

Country Link
AU (1) AU3887772A (en)
ES (1) ES399844A1 (en)
GB (1) GB1377486A (en)
IT (1) IT961142B (en)
NL (1) NL7201819A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2365596A1 (en) * 1976-09-27 1978-04-21 Witco Chemical Corp COMPOSITIONS BASED ON POLYETHER-POLYOLS AND THEIR APPLICATION TO THE PREPARATION OF POLYURETHANE FOAMS
EP0107080A1 (en) * 1982-09-29 1984-05-02 The B.F. GOODRICH Company Decolorizing polymers of epihalohydrin
GB2135322A (en) * 1983-01-21 1984-08-30 Vyzk Ustav Petrochem A process for purifying at least partially water-soluble polyethers and/or copolymers

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5248833A (en) * 1992-09-22 1993-09-28 Arco Chemical Technology, L.P. Process for purifying polyols made with double metal cyanide catalysts

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2365596A1 (en) * 1976-09-27 1978-04-21 Witco Chemical Corp COMPOSITIONS BASED ON POLYETHER-POLYOLS AND THEIR APPLICATION TO THE PREPARATION OF POLYURETHANE FOAMS
EP0107080A1 (en) * 1982-09-29 1984-05-02 The B.F. GOODRICH Company Decolorizing polymers of epihalohydrin
GB2135322A (en) * 1983-01-21 1984-08-30 Vyzk Ustav Petrochem A process for purifying at least partially water-soluble polyethers and/or copolymers

Also Published As

Publication number Publication date
AU3887772A (en) 1973-08-16
NL7201819A (en) 1972-08-18
ES399844A1 (en) 1975-04-01
IT961142B (en) 1973-12-10

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees