[go: up one dir, main page]

IT1193749B - PERFECTED METHOD FOR THE PRODUCTION OF POLYIDRIC COMPOUNDS - Google Patents

PERFECTED METHOD FOR THE PRODUCTION OF POLYIDRIC COMPOUNDS

Info

Publication number
IT1193749B
IT1193749B IT51895/78A IT5189578A IT1193749B IT 1193749 B IT1193749 B IT 1193749B IT 51895/78 A IT51895/78 A IT 51895/78A IT 5189578 A IT5189578 A IT 5189578A IT 1193749 B IT1193749 B IT 1193749B
Authority
IT
Italy
Prior art keywords
distillation
stage
compounds
polyhydric
acidic
Prior art date
Application number
IT51895/78A
Other languages
Italian (it)
Other versions
IT7851895A0 (en
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 IT7851895A0 publication Critical patent/IT7851895A0/en
Application granted granted Critical
Publication of IT1193749B publication Critical patent/IT1193749B/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.
IT51895/78A 1977-11-14 1978-11-14 PERFECTED METHOD FOR THE PRODUCTION OF POLYIDRIC COMPOUNDS IT1193749B (en)

Applications Claiming Priority (1)

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

Publications (2)

Publication Number Publication Date
IT7851895A0 IT7851895A0 (en) 1978-11-14
IT1193749B true IT1193749B (en) 1988-08-24

Family

ID=25309759

Family Applications (1)

Application Number Title Priority Date Filing Date
IT51895/78A IT1193749B (en) 1977-11-14 1978-11-14 PERFECTED METHOD FOR THE PRODUCTION OF POLYIDRIC COMPOUNDS

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
US7462748B2 (en) 2006-09-07 2008-12-09 Shell Oil Company Process for the preparation of alkylene glycol
US7465840B2 (en) 2006-09-07 2008-12-16 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
DE2849248B2 (en) 1982-04-22
JPS5479211A (en) 1979-06-25
DE2849248C3 (en) 1982-11-25
GB2007659B (en) 1982-05-19
DE2849248A1 (en) 1979-05-17
BE871960A (en) 1979-05-14
FR2408568A1 (en) 1979-06-08
NL7810869A (en) 1979-05-16
GB2007659A (en) 1979-05-23
IT7851895A0 (en) 1978-11-14

Similar Documents

Publication Publication Date Title
ATE795T1 (en) PROCESS FOR THE PRODUCTION OF METAL SOAPS.
ATE121069T1 (en) METHOD FOR PRODUCING HIGH YIELD DIALKYLESTERS OF POLYHALOGENAROMATIC ACIDS.
ATE166044T1 (en) METHOD FOR PRODUCING HALOMETHYL ESTERS OF ALIFATIC CARBOXYLIC ACID
ATE146T1 (en) PROCESS FOR OBTAINING ANHYDROUS OR SUBSTANTIALLY ANHYDROUS FORMIC ACID.
DE50103216D1 (en) METHOD FOR OBTAINING WATER-FREE FORMIC ACID
DE3869236D1 (en) METHOD FOR THE PRODUCTION OF BARIUM TITANATES.
IT1193749B (en) PERFECTED METHOD FOR THE PRODUCTION OF POLYIDRIC COMPOUNDS
BR8202542A (en) PROCESS AND APPLIANCE FOR HYDROLYSIS OF AN ALPHA-CHLORINE TOLUENE COMPOUND
DD132338A5 (en) PROCESS FOR THE PRODUCTION OF ESTERS OF UNSATURATED CARBON ACIDS FROM PROPYLENE OR ISOBUTYLENE
FI903160A0 (en) Purification method for products containing esters of unreduced sugar and one or more fatty acids
ES416164A1 (en) Process for obtaining esters from cyclohexanone waste
ZA826862B (en) Process for making allylic esters of tetrabromophthalic acid
ES2013588A4 (en) PURIFICATION OF ALKYL GLIOXYLATE.
IT1210947B (en) PROCEDURE FOR PREPARING ARILALCANOIC ACID ESTERS
ATE41911T1 (en) METHOD OF EXTRACTING ORGANIC COMPOUNDS FROM THEIR SOLUTIONS OR FROM AQUEOUS SUSPENSIONS.
ATE3538T1 (en) PROCESS FOR THE RECOVERY OF CARBONIC ACIDS FROM MIXTURES CONTAINING GLYCOLESTER DERIVATIVES OF THESE ACIDS.
ES423262A1 (en) Process for the production of proteinaceous material
DE68901004D1 (en) METHOD FOR PURIFYING ALPHA-SUBSTITUTED ACETIC ACIDS.
ATE15670T1 (en) PROCESS FOR THE PRODUCTION OF TETRONIC ACID.
DE59001880D1 (en) METHOD FOR THE CONTINUOUS PRODUCTION OF GLYOXYL ACID.
ATE104951T1 (en) PROCESS FOR PRODUCTION OF VINYL GABA.
ATE140231T1 (en) CONTINUOUS PROCESS FOR PRODUCING SUCROSE-6-ESTERS
SU1085974A1 (en) Process for preparing dl-glutamic acid
ATA135689A (en) METHOD FOR PRODUCING STORAGE-STABLE LAEVULINIC ACIDS
DE3261388D1 (en) Process for making allylic esters of tetrachlorophthalic acid