BE705513A - - Google Patents

Info

Publication number
BE705513A
BE705513A BE705513DA BE705513A BE 705513 A BE705513 A BE 705513A BE 705513D A BE705513D A BE 705513DA BE 705513 A BE705513 A BE 705513A
Authority
BE
Belgium
Prior art keywords
water
mixture
polymer
stage
ether glycol
Prior art date
Application number
Other languages
English (en)
French (fr)
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
Publication of BE705513A publication Critical patent/BE705513A/fr

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C43/00Ethers; Compounds having groups, groups or groups
    • C07C43/02Ethers
    • C07C43/03Ethers having all ether-oxygen atoms bound to acyclic carbon atoms
    • C07C43/04Saturated ethers
    • C07C43/10Saturated ethers of polyhydroxy compounds
    • C07C43/11Polyethers containing —O—(C—C—O—)n units with ≤ 2 n≤ 10
    • 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
    • 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)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Polyethers (AREA)
BE705513D 1967-10-23 1967-10-23 BE705513A (d)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BE705513 1967-10-23

Publications (1)

Publication Number Publication Date
BE705513A true BE705513A (d) 1968-04-23

Family

ID=3851710

Family Applications (1)

Application Number Title Priority Date Filing Date
BE705513D BE705513A (d) 1967-10-23 1967-10-23

Country Status (1)

Country Link
BE (1) BE705513A (d)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2361433A1 (fr) * 1976-03-31 1978-03-10 Du Pont Preparation de poly(tetramethylene ether) glycol a partir d'esters de celui-ci

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2361433A1 (fr) * 1976-03-31 1978-03-10 Du Pont Preparation de poly(tetramethylene ether) glycol a partir d'esters de celui-ci

Similar Documents

Publication Publication Date Title
EP2791098B1 (fr) Procede de purification de la vanilline par extraction liquide-liquide
JPH029036B2 (d)
WO2001051596A2 (fr) Procede d'extraction des insaponifiables des huiles vegetales au moyen de chloro-1-butane
EP1625108B1 (fr) Separation d'un diacetal du glyoxal par extraction liquide-liquide a contre-courant
EP0735023B1 (fr) Réactif et procédé pour la synthèse de dérivés organiques oxysulfurés et fluorés
FR2529886A1 (fr) Procede de preparation d'arylalcanoates a partir de 1-halogenalkylarylcetals catalyses par des carboxylates de zinc
WO2000017185A1 (fr) Procede de preparation de la vitamine e
FR2486072A1 (fr) Procede pour la fabrication de l'acide b-hydroxybutyrique et de ses oligocondensats
FR2669636A1 (fr) Procede de fabrication de furane 2,5-dicarboxaldehyde.
BE705513A (d)
EP0149407A2 (fr) Procédé de préparation de bromobenzaldehydes hydroxy et/ou alkoxy substitués
JP4871130B2 (ja) メソトリオンを精製する方法
EP0149952B1 (fr) Procédé de préparation de bromobenzaldéhydes hydroxy et/ou alkoxy substitués
JPS6217582B2 (d)
EP0007882A1 (fr) Procédé de préparation d'alcools allyliques à partir d'halogénures d'allyle
FR2615185A1 (fr) Procede de preparation de trifluoromethyltoluene a partir d'halomethylbenzotrifluorure
BE1024581B1 (fr) Procédé de production de sévoflurane
US3840592A (en) Separation of dioxin and 2,4,5-t from dioxin and 2,4,5-t-contaminated silvex
FR2760016A1 (fr) Procede de fabrication industrielle de diosmine a partir de l'hesperidine
JPH066551B2 (ja) メタクリル酸の精製分離方法
KR100245197B1 (ko) 산화에틸렌/에틸렌글리콜 공장의 폐기물로 부터 1,4-디옥산을제조하는 방법
EP2609069B1 (fr) Procede de preparation d'adipate de di-alpha-methylbenzyle
BE882760A (fr) Procede d'epuration de la graisse de laine et produits ainsi obtenus.
WO2000044724A1 (en) Improved method for the preparation of 3,5-dichloro-2,4,6-trifluoropyridine
CA2217341A1 (fr) Composes bolaformes a tetes glycerol, procedes de preparation et utilisations