FR2446298A1 - Continuous prepn. of uniform polyethers - from alkylene oxide and poly:ol, in divided reaction zone, esp. for use in making polyurethane - Google Patents
Continuous prepn. of uniform polyethers - from alkylene oxide and poly:ol, in divided reaction zone, esp. for use in making polyurethaneInfo
- Publication number
- FR2446298A1 FR2446298A1 FR7900883A FR7900883A FR2446298A1 FR 2446298 A1 FR2446298 A1 FR 2446298A1 FR 7900883 A FR7900883 A FR 7900883A FR 7900883 A FR7900883 A FR 7900883A FR 2446298 A1 FR2446298 A1 FR 2446298A1
- Authority
- FR
- France
- Prior art keywords
- epoxyalkane
- polyethers
- uniform
- reaction zone
- esp
- 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.)
- Granted
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C41/00—Preparation of ethers; Preparation of compounds having groups, groups or groups
- C07C41/01—Preparation of ethers
- C07C41/02—Preparation of ethers from oxiranes
- C07C41/03—Preparation of ethers from oxiranes by reaction of oxirane rings with hydroxy groups
-
- 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
- C08G65/26—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 from cyclic ethers and other compounds
- C08G65/2696—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 from cyclic ethers and other compounds characterised by the process or apparatus used
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Polyethers (AREA)
Abstract
Continuous process is described for the prepn. of polyethers by reaction of an epoxyalkane on a polyol in presence of an alkali metal catalyst is carried out in a reaction zone divided into is not 6 sections. The monomer, and the polyol contg. in soln. 1-20 wt. % (calculated as KOH) of an alkali metal alcoholate, with 0.05-0.5 wt. % of water, are fed upwards into the first section; the molar ratio of epoxyalkane in the first section is 1:1.5. The prod. is purified, or is reacted with another epoxyalkane, followed by purification, to give block copolymers. A uniform prod. is obtd. The process and plant are relatively simpler. A relatively smaller condenser can be used, since the amt. of unreacted epoxyalkane vapour is relatively low 4-5x lower.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7900883A FR2446298A1 (en) | 1979-01-15 | 1979-01-15 | Continuous prepn. of uniform polyethers - from alkylene oxide and poly:ol, in divided reaction zone, esp. for use in making polyurethane |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7900883A FR2446298A1 (en) | 1979-01-15 | 1979-01-15 | Continuous prepn. of uniform polyethers - from alkylene oxide and poly:ol, in divided reaction zone, esp. for use in making polyurethane |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2446298A1 true FR2446298A1 (en) | 1980-08-08 |
FR2446298B1 FR2446298B1 (en) | 1983-04-22 |
Family
ID=9220749
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7900883A Granted FR2446298A1 (en) | 1979-01-15 | 1979-01-15 | Continuous prepn. of uniform polyethers - from alkylene oxide and poly:ol, in divided reaction zone, esp. for use in making polyurethane |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2446298A1 (en) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH448032A (en) * | 1965-06-09 | 1967-12-15 | Rhone Poulenc Sa | Staged reactor |
DE2628778A1 (en) * | 1976-06-26 | 1978-01-05 | Texaco Development Corp | Glycol ethers prepn. from alkylene oxide and alcohol - using alkali(ne earth) metal catalyst obtd. from distn. of residue of process using aq. alkali |
FR2357592A1 (en) * | 1976-07-06 | 1978-02-03 | Union Carbide Corp | POLYOLS AND POLYMERS / POLYOLS WITH A HIGH CONTENT OF ETHYLENE OXIDE AND DERIVATIVE POLYURETHANNES |
-
1979
- 1979-01-15 FR FR7900883A patent/FR2446298A1/en active Granted
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH448032A (en) * | 1965-06-09 | 1967-12-15 | Rhone Poulenc Sa | Staged reactor |
DE2628778A1 (en) * | 1976-06-26 | 1978-01-05 | Texaco Development Corp | Glycol ethers prepn. from alkylene oxide and alcohol - using alkali(ne earth) metal catalyst obtd. from distn. of residue of process using aq. alkali |
FR2357592A1 (en) * | 1976-07-06 | 1978-02-03 | Union Carbide Corp | POLYOLS AND POLYMERS / POLYOLS WITH A HIGH CONTENT OF ETHYLENE OXIDE AND DERIVATIVE POLYURETHANNES |
Non-Patent Citations (1)
Title |
---|
CA1975 * |
Also Published As
Publication number | Publication date |
---|---|
FR2446298B1 (en) | 1983-04-22 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CA2301210A1 (en) | Direct polyoxyalkylation of glycerine with double metal cyanide catalysis | |
FR2412543A1 (en) | PROCESS FOR THE PRODUCTION OF AN ALKYLENE CARBONATE | |
EP0280223A3 (en) | Polyacetals, process for their fabrication from dialdehydes and polyolacids, and use of polyacetals | |
SG77264A1 (en) | Process for producing an alkylene glycol | |
IE40875B1 (en) | A process for preparing 7-acylamino-7-alkoxycephalosporinsor 6-acylamino-6-alkoxypenicillins | |
CA2085876A1 (en) | Production of ethylene oxide | |
JPS56103236A (en) | Polyester composition | |
FR2446298A1 (en) | Continuous prepn. of uniform polyethers - from alkylene oxide and poly:ol, in divided reaction zone, esp. for use in making polyurethane | |
DE3371197D1 (en) | Continuous alkoxidation process | |
DE3665578D1 (en) | Production of dibromonitro compound | |
EP0185553A3 (en) | Process for preparation of poly(tetramethylene ether) glycol | |
DE3262622D1 (en) | Preparation of a glutaraldehyde precursor | |
JPS5273810A (en) | Production of glycol monoethers | |
FR2269550A1 (en) | Cold, one-shot prepn. of polyurethane foams - using unmodified diisocyanate and specific polyether polyols | |
GB1498273A (en) | Process for the production of glycidol | |
GB1430337A (en) | Process for the manufacture of methacrylic acid and oxidation catalyst therefor | |
JPS5618930A (en) | Production of alkylene glycol | |
JPS5423607A (en) | Production of metallic soap | |
ES8306697A1 (en) | Process for the production of methacrylic acid from isobutyraldehyde. | |
ES8503325A1 (en) | Process for producing substituted asymmetric ureas. | |
JPS52111557A (en) | Production of cyclic ether | |
GB2043663B (en) | Continuous production of polyethers | |
ES8505329A1 (en) | Process for the preparation of isobutyryl fluoride. | |
JPS5387348A (en) | Method of purifying tetrahydrofuran | |
JPS5488230A (en) | 4-alkoxy-3,5-diamino-alpha,alpha,alpha-trifluoromethylbenzene,its preparation, and hardeners for polyurethane elastomers consisting of it |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |