NL7810869A - IMPROVED METHOD FOR PREPARING MULTI-VALUE HYDROXY CONNECTIONS. - Google Patents

IMPROVED METHOD FOR PREPARING MULTI-VALUE HYDROXY CONNECTIONS.

Info

Publication number
NL7810869A
NL7810869A NL7810869A NL7810869A NL7810869A NL 7810869 A NL7810869 A NL 7810869A NL 7810869 A NL7810869 A NL 7810869A NL 7810869 A NL7810869 A NL 7810869A NL 7810869 A NL7810869 A NL 7810869A
Authority
NL
Netherlands
Prior art keywords
distillation
stage
polyhydric
connections
improved method
Prior art date
Application number
NL7810869A
Other languages
Unknown language ( )
Dutch (nl)
Original Assignee
Halcon Res & Dev
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 Halcon Res & Dev filed Critical Halcon Res & Dev
Publication of NL7810869A publication Critical patent/NL7810869A/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C29/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring
    • C07C29/74—Separation; Purification; Use of additives, e.g. for stabilisation
    • C07C29/76—Separation; Purification; Use of additives, e.g. for stabilisation by physical treatment
    • C07C29/80—Separation; Purification; Use of additives, e.g. for stabilisation by physical treatment by distillation
    • C07C29/82—Separation; Purification; Use of additives, e.g. for stabilisation by physical treatment by distillation by azeotropic distillation
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C29/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring
    • C07C29/09—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by hydrolysis
    • C07C29/095—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by hydrolysis of esters of organic acids
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C29/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring
    • C07C29/74—Separation; Purification; Use of additives, e.g. for stabilisation
    • C07C29/76—Separation; Purification; Use of additives, e.g. for stabilisation by physical treatment
    • C07C29/80—Separation; Purification; Use of additives, e.g. for stabilisation by physical treatment by distillation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/50—Improvements relating to the production of bulk chemicals
    • Y02P20/52—Improvements relating to the production of bulk chemicals using catalysts, e.g. selective catalysts

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)

Abstract

Producing C2-6 polyhydric compounds by hydrolysing a lower carboxylate ester of said polyhydric compound with water in the presence of an acidic ion exchange resin catalyst and subjecting the hydrolysis product to a two-stage distillation in which firstly water and secondly carboxylic acid are separated as overheads and the polyhydric compound is recovered from the bottoms product of the second stage of the distillation, the second stage of the distillation being carried out in the substantial absence of acidic resin moieties. Traces of acidic resin may be removed from the hydrolysis product before distillation by treatment with a base or an anion-exchange resin, or in a prior flash distillation. Polyhydric compounds are for example ethylene glycol or propylene glycol.
NL7810869A 1977-11-14 1978-11-01 IMPROVED METHOD FOR PREPARING MULTI-VALUE HYDROXY CONNECTIONS. NL7810869A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US85102677A 1977-11-14 1977-11-14

Publications (1)

Publication Number Publication Date
NL7810869A true NL7810869A (en) 1979-05-16

Family

ID=25309759

Family Applications (1)

Application Number Title Priority Date Filing Date
NL7810869A NL7810869A (en) 1977-11-14 1978-11-01 IMPROVED METHOD FOR PREPARING MULTI-VALUE HYDROXY CONNECTIONS.

Country Status (7)

Country Link
JP (1) JPS5479211A (en)
BE (1) BE871960A (en)
DE (1) DE2849248C3 (en)
FR (1) FR2408568A1 (en)
GB (1) GB2007659B (en)
IT (1) IT1193749B (en)
NL (1) NL7810869A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4187153A (en) * 1977-11-14 1980-02-05 Halcon Research & Development Corporation Production of alkylene glycols
AT377612B (en) * 1981-06-30 1985-04-10 Max Planck Gesellschaft ARRANGEMENT FOR THE OPTICAL MEASUREMENT OF SUBSTANCE CONCENTRATIONS
US7465840B2 (en) 2006-09-07 2008-12-16 Shell Oil Company Process for the preparation of alkylene glycol
US7462748B2 (en) 2006-09-07 2008-12-09 Shell Oil Company Process for the preparation of alkylene glycol

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB511130A (en) * 1938-02-19 1939-08-14 Bataafsche Petroleum A process for the recovery of organic oxy-compounds from their aqueous solutions containing one or more salts
GB595407A (en) * 1943-08-17 1947-12-04 American Cyanamid Co Production of pure glycol solutions
US3859368A (en) * 1971-09-08 1975-01-07 Halcon International Inc Method of producing polyhydric compounds such as ethylene glycol by disproportionation of its monoacetate
JPS5219611A (en) * 1975-08-07 1977-02-15 Mitsubishi Chem Ind Ltd Process for recovery of butanediol and/ or butenediol
JPS5265209A (en) * 1975-11-25 1977-05-30 Mitsubishi Chem Ind Ltd Manufacture of diols
JPS52133912A (en) * 1976-05-01 1977-11-09 Mitsubishi Chem Ind Ltd Preparation of butanediol

Also Published As

Publication number Publication date
BE871960A (en) 1979-05-14
JPS5479211A (en) 1979-06-25
IT1193749B (en) 1988-08-24
GB2007659A (en) 1979-05-23
FR2408568A1 (en) 1979-06-08
DE2849248B2 (en) 1982-04-22
DE2849248A1 (en) 1979-05-17
GB2007659B (en) 1982-05-19
DE2849248C3 (en) 1982-11-25
IT7851895A0 (en) 1978-11-14

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BB A search report has been drawn up
BV The patent application has lapsed