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
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical class [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 title 1
- 150000001875 compounds Chemical class 0.000 abstract 4
- 238000004821 distillation Methods 0.000 abstract 4
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 abstract 3
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 abstract 3
- 230000002378 acidificating effect Effects 0.000 abstract 3
- 230000007062 hydrolysis Effects 0.000 abstract 2
- 238000006460 hydrolysis reaction Methods 0.000 abstract 2
- 239000011347 resin Substances 0.000 abstract 2
- 229920005989 resin Polymers 0.000 abstract 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 2
- NWUYHJFMYQTDRP-UHFFFAOYSA-N 1,2-bis(ethenyl)benzene;1-ethenyl-2-ethylbenzene;styrene Chemical compound C=CC1=CC=CC=C1.CCC1=CC=CC=C1C=C.C=CC1=CC=CC=C1C=C NWUYHJFMYQTDRP-UHFFFAOYSA-N 0.000 abstract 1
- 239000003957 anion exchange resin Substances 0.000 abstract 1
- -1 carboxylate ester Chemical class 0.000 abstract 1
- 150000001735 carboxylic acids Chemical class 0.000 abstract 1
- 239000003054 catalyst Substances 0.000 abstract 1
- 238000007701 flash-distillation Methods 0.000 abstract 1
- 230000003301 hydrolyzing effect Effects 0.000 abstract 1
- 239000003456 ion exchange resin Substances 0.000 abstract 1
- 229920003303 ion-exchange polymer Polymers 0.000 abstract 1
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.
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)
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)
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 |
-
1978
- 1978-11-01 NL NL7810869A patent/NL7810869A/en not_active Application Discontinuation
- 1978-11-13 BE BE191683A patent/BE871960A/en unknown
- 1978-11-13 FR FR7832007A patent/FR2408568A1/en not_active Withdrawn
- 1978-11-14 DE DE2849248A patent/DE2849248C3/en not_active Expired
- 1978-11-14 GB GB7844390A patent/GB2007659B/en not_active Expired
- 1978-11-14 IT IT51895/78A patent/IT1193749B/en active
- 1978-11-14 JP JP14039678A patent/JPS5479211A/en active Pending
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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Legal Events
Date | Code | Title | Description |
---|---|---|---|
A1A | A request for search or an international-type search has been filed | ||
BB | A search report has been drawn up | ||
BV | The patent application has lapsed |