WO2007132575A1 - 高純度ビスフェノールaの製造方法及び製造設備 - Google Patents
高純度ビスフェノールaの製造方法及び製造設備 Download PDFInfo
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- WO2007132575A1 WO2007132575A1 PCT/JP2007/051087 JP2007051087W WO2007132575A1 WO 2007132575 A1 WO2007132575 A1 WO 2007132575A1 JP 2007051087 W JP2007051087 W JP 2007051087W WO 2007132575 A1 WO2007132575 A1 WO 2007132575A1
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- Prior art keywords
- bisphenol
- free acid
- isomerization
- phenol
- mother liquor
- Prior art date
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Classifications
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C37/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring
- C07C37/11—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring by reactions increasing the number of carbon atoms
- C07C37/20—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring by reactions increasing the number of carbon atoms using aldehydes or ketones
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C37/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring
- C07C37/68—Purification; separation; Use of additives, e.g. for stabilisation
- C07C37/70—Purification; separation; Use of additives, e.g. for stabilisation by physical treatment
- C07C37/82—Purification; separation; Use of additives, e.g. for stabilisation by physical treatment by solid-liquid treatment; by chemisorption
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D9/00—Crystallisation
- B01D9/0059—General arrangements of crystallisation plant, e.g. flow sheets
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D9/00—Crystallisation
- B01D9/02—Crystallisation from solutions
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C37/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C37/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring
- C07C37/68—Purification; separation; Use of additives, e.g. for stabilisation
- C07C37/70—Purification; separation; Use of additives, e.g. for stabilisation by physical treatment
- C07C37/84—Purification; separation; Use of additives, e.g. for stabilisation by physical treatment by crystallisation
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C37/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring
- C07C37/68—Purification; separation; Use of additives, e.g. for stabilisation
- C07C37/86—Purification; separation; Use of additives, e.g. for stabilisation by treatment giving rise to a chemical modification
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C39/00—Compounds having at least one hydroxy or O-metal group bound to a carbon atom of a six-membered aromatic ring
- C07C39/12—Compounds having at least one hydroxy or O-metal group bound to a carbon atom of a six-membered aromatic ring polycyclic with no unsaturation outside the aromatic rings
- C07C39/15—Compounds having at least one hydroxy or O-metal group bound to a carbon atom of a six-membered aromatic ring polycyclic with no unsaturation outside the aromatic rings with all hydroxy groups on non-condensed rings, e.g. phenylphenol
- C07C39/16—Bis-(hydroxyphenyl) alkanes; Tris-(hydroxyphenyl)alkanes
Definitions
- the present invention isomerizes the acidic catalyst used in the condensation reaction step and the total amount of the mother liquor obtained in the crystallization / solid-liquid separation step in the isomerization step, which is one of the production steps of bisphenol A.
- the polycarbonate used as an optical material is required to be infinitely transparent (low hue), and naturally, the same is required for bisphenol A as a raw material.
- Bisphenol A is usually produced by reacting acetone with a large excess of phenol in the presence of an acidic catalyst.
- a strong acidic cation exchange resin is typical as the acidic catalyst.
- the reaction mixture contains reaction by-products such as unreacted phenol, unreacted acetone, reaction product water and colored substances.
- This reaction mixture is usually separated and purified into mother liquor and crystals by crystallization / solid-liquid separation operation by evaporating and removing unreacted acetone and reaction product water. Since the obtained mother liquor contains a large amount of phenol, a production method is known in which it is recycled again as a reaction raw material during the reaction process (Production Method 1).
- the evaporated phenol is circulated in the reaction process, and the mother liquor obtained in the crystallization / solid-liquid separation process is subjected to isocratic treatment with an acidic catalyst.
- a production method is also known in which the resulting isomerization solution is recycled to the reaction mixture after evaporating and removing unreacted acetone and reaction product water (Production Method 2).
- any of the production methods by repeating the mother liquor repeatedly, a trace amount of free acid flowing out from the acidic catalyst used is concentrated and accumulated in the reaction mixture.
- This free acid especially sulfonic acid, can cause coloring substances to cause deterioration of the color of the product bisphenol A or cause thermal decomposition.
- Patent Documents 1 and 2 bisphenol A is produced by reacting phenol with acetone, and bisphenol A is converted from bisphenol A and phenol into the form of the reaction product.
- a method for preventing thermal decomposition of bisphenol A by providing a step of contacting the mother liquor after removal with a basic ion exchange resin.
- Patent Document 4 in the reaction step (A) in which phenol and acetone are reacted to produce bisphenol A, at least a part of the phenolic compound is strongly acidic cation exchange resin before using the phenol compound. And at least a portion of the reaction mixture and at least a portion of the Z or mother liquor before the Z or mother liquor is circulated through the reaction mixture. -A method for producing bisphenol A in contact with an on-resin is disclosed.
- Patent Document 1 JP-A-1 156937
- Patent Document 2 JP-A-5-201905
- Patent Document 3 Japanese Patent Laid-Open No. 2001-306813
- Patent Document 4 JP-A-6-9468
- An object of the present invention is to provide a method for producing high-quality bisphenol A, particularly excellent in transparency (hue), and a facility for producing the bisphenol A.
- the present invention provides:
- step (A) A condensation reaction step in which an excess amount of phenol and acetone is subjected to a condensation reaction in the presence of an acidic catalyst, (B) step, a concentration step in which the reaction mixture obtained in step (A) is concentrated, and step (C).
- a crystallization / solid-liquid separation step in which the adduct of bisphenol A and phenol is crystallized by cooling the concentrated reaction mixture obtained in (B) and separated into the adduct and mother liquor,
- D The isomerization process in which the total amount of the mother liquor obtained in step (C) is isomerized with an isomerization catalyst, and the isomerization solution is circulated to steps (A) and Z or step (B);
- bisphenol A which has a granulation process to make a product prill
- a free acid removal step is provided to remove the free acid present in the mother liquor or isomerization solution
- step (A) A condensation reaction step in which an excess amount of phenol and acetone are subjected to a condensation reaction in the presence of an acidic catalyst, (B) step, a concentration step in which the reaction mixture obtained in step (A) is concentrated, and step (C).
- step (C) A crystallization / solid-liquid separation step in which the adduct of bisphenol A and phenol is crystallized by cooling the concentrated reaction mixture obtained in (B) and separated into the adduct and mother liquor,
- step (D) The whole amount of the mother liquor obtained in step (C) is isomerized with an isomerization catalyst, and a part of the isomerization solution is circulated to step (B).
- step (E) In step (D) Recovery process for recovering adduct of bisphenol A and phenol from the remainder of the treated isomerization solution, (F) From the adduct of bisphenol A and phenol obtained in step (C) The bisphenol obtained in the adduct decomposition step to remove the phenol to make a bisphenol A melt, and (G) step (F) A melting In the production process of bisphenol A, which has a granulation process that granulates the liquid into a product prill,
- a free acid removal step is provided to remove the free acid present in the mother liquor or the treatment liquid
- the free acid is removed using a mixture of an anion exchange resin and a cation exchange resin.
- FIG. 1 shows an example of a flow sheet for carrying out the present invention.
- the method for producing bisphenol A of the present invention comprises an acidic catalyst used in the condensation reaction step and an isomerization catalyst used in the isomerization step by providing a free acid removal step upstream or downstream of the isomerization step. It is characterized by removing a trace amount of free acid flowing out from the water.
- the method for producing bisphenol A of the present invention comprises:
- A a condensation reaction step in which an excess amount of phenol and acetone are subjected to a condensation reaction in the presence of an acidic catalyst
- B a condensation step in which the reaction mixture obtained in (A) is concentrated
- C a concentration step.
- D free acid An isomerization process in which the entire amount of the mother liquor is isomerized with an isomerization catalyst, and if necessary,
- E bisphenol A from a part of the isomerization liquid treated in the isomerization process.
- the raw materials phenol and acetone are reacted in a stoichiometric excess of phenol.
- the reaction temperature is usually from 50 to: LOO ° C, and the reaction pressure is usually from normal pressure to 1.5 MPa, preferably from normal pressure to 0.6 MPa.
- a strong acid cation exchange resin such as a sulfonic acid type is usually used.
- a catalyst obtained by neutralizing a part of the strongly acidic cation exchange resin resin with a promoter such as mercaptoalkylamine can also be used.
- the condensation reaction of the raw material liquid of phenol and acetone is carried out by a fixed bed flow method or a suspension bed batch method which is a continuous method and a push flow method.
- the liquid space velocity (LHSV) of the raw material liquid supplied to the reactor is about 0.2 to 50 hr- 1 .
- the suspension bed batch method is used, although it varies depending on the reaction temperature and reaction pressure, it is generally a resin catalyst amount in a range of 20 to: LOO mass% with respect to the raw material liquid, and the reaction time About 0.5 to 5 hours.
- the reaction mixture from the condensation reaction step is usually concentrated in a two-step process.
- the first concentration step unreacted acetone, reaction product water, and the like are removed by a method such as distillation under reduced pressure.
- the vacuum distillation is carried out at a temperature of about 30 to 180 ° C and a pressure of about 13 to 67 kPa.
- phenol is distilled off to adjust the concentration of bisphenol A.
- the concentration of bisphenol A is preferably about 20 to 60% by mass. If the concentration of bisphenol A is less than 20% by mass, the yield will be low. If the concentration is more than 60% by mass, the solidification temperature will be high, the solidification will be easy, and the transfer will be impossible. Occur. Therefore, the concentration is usually adjusted by pre-concentrating the reaction mixture in the first concentration step.
- This second concentration step is preferably carried out under conditions of a pressure of about 4 to 40 kPa and a temperature of about 70 to 140 ° C.
- the concentrated solution from the concentration step is usually cooled to about 70 to 140 ° C to about 35 to 60 ° C, and an adduct (crystal adduct) of bisphenol A and phenol crystallizes into a slurry. . Cooling of the concentrate is removed by external heat exchange or latent heat due to evaporation of water added to the crystallization can. Next, the slurry liquid is solid-liquid separated.
- the composition of the mother liquor obtained in this crystallization 'solid-liquid separation process is usually 65 to 85% by weight of phenol, 10 to 20% by weight of bisphenol A, and 2,4'-byproducts such as isomers. ⁇ 15% by mass and contains a lot of impurities such as 2, 4 '— isomers.
- the total amount of the mother liquor converts the 2,4′-isomer to bisphenol A in the next isomeric treatment step and recovers phenol and bisphenol A contained in the mother liquor.
- the crystal adduct of bisphenol A and phenol separated by solid-liquid separation of the slurry-like reaction mixture is then sent to the adduct decomposition process to remove the phenol to obtain high-purity bisphenol A. It is done.
- the solid component mainly composed of crystal adducts filtered and deposited on the filter surface of the solid-liquid separator is subjected to washing with a washing liquid.
- the cleaning solution can be the same as the saturated phenol solution of bisphenol A, in addition to the phenol recovered by evaporation, the raw material phenol, water, and the water phenol mixture.
- the amount of cleaning liquid used is large, it is good in terms of cleaning efficiency, but there are naturally upper limits from the viewpoint of loss of re-dissolution of the crystal adduct, circulation, recovery, and reuse of the cleaning liquid. 0.1 to 10 times the maximum is the most efficient.
- the outside of the crystal pad may be redissolved, and crystallization and solid-liquid separation may be repeated again.
- the impurities incorporated into the adduct crystal are gradually reduced.
- the re-dissolved solution and the washing solution of the solid component mainly composed of an adduct obtained by solid-liquid separation include phenol recovered from evaporation, raw material phenol, water, water phenol mixture, and bisphenol.
- the same saturated phenol solution of A can be used at each stage.
- the mother liquor obtained by recrystallization and solid-liquid separation can also be recycled to the previous crystallization process.
- the liquid phase part (mother liquor) obtained in the crystallization and solid-liquid separation process is then supplied in its entirety to the isomerization process to isomerize the reaction by-products in the mother liquor. Also, free acid in the mother liquor is removed by the free acid removal step. Most of this isomeric treatment solution is recycled to reaction steps (A) and Z or the concentration step (B), preferably to the concentration step (B). If necessary, a part of the isomeric treatment liquid is withdrawn in order to prevent accumulation of impurities and sent to the recovery process as an effluent.
- a sulfonic acid type cation exchange resin is usually used as a catalyst, and the reaction temperature is about 50 to 100 ° C. velocity (LHSV) is carried out at about 0. 2 ⁇ 50hr _1.
- the free acid removal step in the present invention may be carried out either upstream or downstream of the isomorphism step. May be provided.
- a cation exchange resin and an anion exchange resin are used, and as the cation exchange resin, a strongly acidic ion exchange resin is used as an anion.
- the exchange resin strong basic ion exchange resin and weak basic ion exchange resin are used.
- Strong acid cation exchange resin has a sulfonic acid group (RSO—H +) as a functional group and is weakly acidic.
- Ion exchange resin has carboxylic acid groups (R—COO—H +), phosphonic acid groups (R—P (O) (O—H +)), phosphinic acid groups (R—PH (O) (O—H +) as functional groups. )), Arsenite group (R— OAsO— H +), Hue
- Cation exchange resins are common and preferred.
- Strongly basic anion exchange resins are quaternary ammonia bases (R—N + R R R) or
- 1 2 3 has a tertiary sulfo-um group (R—S + R R) as a functional group.
- weakly basic anion exchange resins include those having primary to tertiary amines as functional groups.
- Examples of commercially available products include Diaion (registered trademark) WA-20 manufactured by Mitsubishi Kagaku Co., Ltd. , 21, 30, A21 made by R & H.
- a temperature when using a strongly basic anion exchange resin for a free acid removal process 40-80 degreeC is preferable. If the temperature is lower than 40 ° C, bisphenol A may be precipitated in the free acid removal step, and if it exceeds 80 ° C, functional groups may be eliminated.
- the temperature when using weakly basic ion exchange resin is preferably 40 to 100 ° C, more preferably 60 to 80 ° C. If the temperature is lower than 40 ° C, bisphenol A may be precipitated in the liberation process, and if it exceeds 100 ° C, functional groups may be eliminated.
- the anion exchange resin used in the free acid removal step it is preferable to bring the ion exchange resin into contact with a mother liquor whose water content is adjusted to 0.01 to 1% by mass. 0.7% by weight is preferred. If the amount is less than 01% by mass, impurities in the mother liquor may clog the pores in the ion-exchange resin and shorten the catalyst life. On the other hand, if the amount is higher than 1% by mass, water, which is a polar substance, Activates the movement of cation electrons and collects with anion exchange resin The capacity may be reduced and the catalyst life may be shortened.
- the water concentration in the mother liquor can be adjusted by adding water to the mother liquor or by crystallization 'solid-liquid separation step (
- the mixing ratio when the cation exchange resin and the anion exchange resin are mixed and used in the free acid removal step is not particularly limited.
- the volume ratio of cation exchange resin: anion exchange resin is What is necessary is just to mix in the ratio of 1: 5-5: 1.
- the anion exchange resin used in the present invention is preferably a weakly basic anion exchange resin.
- the bisphenol A production facility of the present invention is characterized by comprising a free acid removing means for removing free acid present in the mother liquor or isomerization treatment liquid.
- a free acid removal means the same ion exchange resin as the ion exchange resin used in the free acid removal step is used.
- the ion exchange resin cation exchange resin and anion exchange resin are used. Is mentioned.
- the cation exchange resin a strongly acidic ion exchange resin is used, and as the anion exchange resin, a strong basic ion exchange resin and a weak basic ion exchange resin are used.
- bisphenol A is about 15 to 20% by mass, and byproducts such as 2, A 'isomers are 5 to 10% by mass. Degree included.
- This isomeric solution is concentrated and then cooled in the presence of phenol to crystallize an adduct (crystal adduct) of bisphenol A and phenol. After solid-liquid separation, the crystal adduct is crystallized. After being melted, it is recycled to the concentration step and Z or crystallization, solid-liquid separation step. The mother liquor after solid-liquid separation is treated after recovering phenol.
- Crystal adduct recovered by solid-liquid separation in the above (C) crystallization and solid-liquid separation process phenol is removed to form high-purity bisphenol A.
- the crystal adduct is heated and melted at about 100 to 160 ° C. to be decomposed into bisphenol A and phenol, and most of the phenol is removed by this molten liquid evaporator. By removing the remaining phenol by steam stripping, a bisphenol A melt is obtained.
- the molten bisphenol A obtained by the decomposition of the adduct is fed to the top of the granulation tower and sprayed from a number of holes provided in the nozzle plate installed at the top of the tower.
- the sprayed molten liquid is cooled by the circulating gas rising from the bottom of the granulation tower, extracted from the bottom as a particulate solid called prill, and becomes product bisphenol A.
- the mixture was distilled under reduced pressure at a pressure of 14 kPa to distill off phenol, and concentrated until the bisphenol A concentration was 40% by mass to obtain a concentrated solution of phenol / bisphenol A.
- water is added to this concentrated liquid, and crystallization is carried out by maintaining at 45 ° C. in a crystallization tank decompressed to 2 kPa (15 Torr), and the resulting slurry solution is filtered through a horizontal belt filter. Thereafter, the adduct crystals obtained were washed twice using phenol recovered by evaporation at a washing ratio of 0.4 (vs. wet adduct crystals). The obtained adduct crystal was recrystallized.
- the liquid filtered through the horizontal belt filter contains 5% by mass of water. Therefore, the water concentration in the mother liquor was adjusted to 0.5% by mass in a distillation column. .
- the adduct crystal obtained by filtration with a horizontal belt filter is charged with the evaporation recovery phenol and the mother liquor from the recrystallization process, heated to 90 ° C to prepare a solution containing 45% by weight of bisphenol A, 10 microns Filter through a size filter, add water again, and recrystallize at 33 kPa (40 Torr) at 50 ° C.
- the resulting slurry solution is placed in a two-stage extrusion centrifuge (400G). Then, the raw material phenol was washed with a washing ratio of 0.4 (vs. wet adduct crystal) to obtain wet adduct crystals.
- the obtained wet adduct was melted by heating at 130 ° C, dephenol, and granulated in a spray granulation tower to obtain granular bisphenol A as a product.
- the obtained granular bisphenol A was heated in an air atmosphere at 175 ° C. for 4 hours, and its hue was visually evaluated using an APHA standard color. As a result, it was APHA40.
- Example 3 Before isomerizing the mother liquor obtained in the solid-liquid separation process using a horizontal belt filter and adjusting the water concentration in the mother liquor to 0.5 mass in the distillation tower, a strongly acidic cation exchange resin (Sanryo Chemical “Diaion (registered trademark) SK-104HJ” and weakly basic anion exchange resin (“Amberlyst (registered trademark) A21” manufactured by R & H) were mixed and filled at a volume ratio of 1: 1.
- the hue of the obtained bisphenol A was APH A15, and the quality could be maintained for one year.
- Product bisphenol A was produced in the same manner as in Example 1 except that the free acid removal tower was not used.
- the hue of the obtained bisphenol A was APHA40.
- Product bisphenol A was produced in the same manner as in Example 1 except that a free acid removal tower was provided at the outlet of the reaction tower.
- the hue of the obtained bisphenol A was APHA35.
- the present invention isomerizes the total amount of the acidic catalyst used in the condensation reaction step and the mother liquor obtained in the crystallization / solid-liquid separation step in the isomerization step, which is one of the production steps of bisphenol A.
- a method for producing high-quality bisphenol A, particularly excellent in transparency (hue), by removing a small amount of free acid flowing out, and the bisphenol A used in the isomerization process. Provides production facilities for phenol A.
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- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
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- General Chemical & Material Sciences (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
Abstract
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Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP07707334A EP2019089A4 (en) | 2006-05-17 | 2007-01-24 | PROCESS FOR PREPARING HIGH-PURITY BISPHENOL A AND PREPARATION APPARATUS |
| CN2007800176492A CN101443301B (zh) | 2006-05-17 | 2007-01-24 | 高纯度双酚a的制造方法和制造设备 |
| KR1020087027790A KR101322711B1 (ko) | 2006-05-17 | 2007-01-24 | 고순도 비스페놀a의 제조 방법 및 제조 설비 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2006-138103 | 2006-05-17 | ||
| JP2006138103A JP5030472B2 (ja) | 2006-05-17 | 2006-05-17 | 高純度ビスフェノールaの製造方法及び製造設備 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2007132575A1 true WO2007132575A1 (ja) | 2007-11-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2007/051087 Ceased WO2007132575A1 (ja) | 2006-05-17 | 2007-01-24 | 高純度ビスフェノールaの製造方法及び製造設備 |
Country Status (7)
| Country | Link |
|---|---|
| EP (1) | EP2019089A4 (ja) |
| JP (1) | JP5030472B2 (ja) |
| KR (1) | KR101322711B1 (ja) |
| CN (1) | CN101443301B (ja) |
| RU (1) | RU2422429C2 (ja) |
| TW (1) | TWI424985B (ja) |
| WO (1) | WO2007132575A1 (ja) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11760710B2 (en) | 2018-07-06 | 2023-09-19 | Badger Licensing Llc | Treatment of residual streams from the manufacture of bisphenols |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6055472B2 (ja) * | 2012-06-28 | 2016-12-27 | 出光興産株式会社 | ビスフェノールaの製造方法 |
| CN104411670B (zh) * | 2012-07-13 | 2017-06-20 | 出光兴产株式会社 | 双酚a的制造方法 |
| JPWO2015129640A1 (ja) * | 2014-02-28 | 2017-03-30 | 出光興産株式会社 | ビスフェノールaの製造方法 |
| KR102349519B1 (ko) * | 2017-11-24 | 2022-01-07 | 주식회사 엘지화학 | 비스페놀a의 제조방법 |
| KR102513933B1 (ko) * | 2018-03-02 | 2023-03-23 | 주식회사 엘지화학 | 비스페놀 a의 제조 방법 및 장치 |
| US20210188750A1 (en) * | 2018-09-05 | 2021-06-24 | Badger Licensing Llc | Process for producing bisphenol-a |
| CN112409139B (zh) * | 2019-08-23 | 2023-04-25 | 南通星辰合成材料有限公司 | 一种双酚a的生产方法及装置 |
| CN112409138B (zh) * | 2019-08-23 | 2023-04-25 | 南通星辰合成材料有限公司 | 一种双酚a的生产方法及装置 |
| KR20210061876A (ko) | 2019-11-20 | 2021-05-28 | 주식회사 사이아테크 | 비스페놀 a형 에폭시 수지 조성물의 제조 방법 |
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| US6133486A (en) * | 1998-12-30 | 2000-10-17 | General Electric Company | Phenol recovery from BPA process waste streams |
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2006
- 2006-05-17 JP JP2006138103A patent/JP5030472B2/ja active Active
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2007
- 2007-01-24 KR KR1020087027790A patent/KR101322711B1/ko active Active
- 2007-01-24 EP EP07707334A patent/EP2019089A4/en not_active Withdrawn
- 2007-01-24 CN CN2007800176492A patent/CN101443301B/zh active Active
- 2007-01-24 RU RU2008149696/04A patent/RU2422429C2/ru active
- 2007-01-24 WO PCT/JP2007/051087 patent/WO2007132575A1/ja not_active Ceased
- 2007-05-11 TW TW096116884A patent/TWI424985B/zh active
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| JPS5476562A (en) * | 1977-11-09 | 1979-06-19 | Shell Int Research | Manufacture of bisphenols |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11760710B2 (en) | 2018-07-06 | 2023-09-19 | Badger Licensing Llc | Treatment of residual streams from the manufacture of bisphenols |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101443301B (zh) | 2013-05-29 |
| CN101443301A (zh) | 2009-05-27 |
| RU2008149696A (ru) | 2010-06-27 |
| EP2019089A1 (en) | 2009-01-28 |
| JP5030472B2 (ja) | 2012-09-19 |
| KR101322711B1 (ko) | 2013-10-25 |
| TWI424985B (zh) | 2014-02-01 |
| JP2007308408A (ja) | 2007-11-29 |
| RU2422429C2 (ru) | 2011-06-27 |
| TW200812948A (en) | 2008-03-16 |
| KR20090013192A (ko) | 2009-02-04 |
| EP2019089A4 (en) | 2011-06-22 |
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