WO2007122964A1 - (メタ)アクリル酸エステルの製造方法 - Google Patents
(メタ)アクリル酸エステルの製造方法 Download PDFInfo
- Publication number
- WO2007122964A1 WO2007122964A1 PCT/JP2007/056346 JP2007056346W WO2007122964A1 WO 2007122964 A1 WO2007122964 A1 WO 2007122964A1 JP 2007056346 W JP2007056346 W JP 2007056346W WO 2007122964 A1 WO2007122964 A1 WO 2007122964A1
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- WIPO (PCT)
- Prior art keywords
- meth
- tetraalkoxytitanium
- water
- reaction
- producing
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- 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.)
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C67/00—Preparation of carboxylic acid esters
- C07C67/03—Preparation of carboxylic acid esters by reacting an ester group with a hydroxy group
Definitions
- the present invention relates to a method for producing a (meth) acrylic acid ester.
- Various (meth) acrylic acid esters are used as a curable component in ultraviolet ray curable, some!
- polyethylene glycol (meth) acrylate, polypropylene glycol (meth) acrylate, polyoxyethyl trimethyl propane tri (meth) acrylate, polyoxyethylenated bisphenol A (Meth) acrylic acid ester such as di (meth) acrylate is used.
- this method must be capable of distilling and recovering the (meth) acrylate ester, and is suitable for high-boiling substances such as the polyoxyethylenated bisphenol A di (meth) acrylate ester described above.
- Nah ... In JP-A-11-140050, a salt solution is added to a reaction solution to hydrolyze tetraalkoxytitanium, insolubilize it, separate and settle using a specific gravity difference, and then remove from the kettle. The method is disclosed. However, in this method, waste water is generated when producing (meth) acrylic acid ester, and the waste water must be extracted, so that workability is poor.
- the present invention relates to (1) transesterification of alcohols and (meth) acrylate in the presence of tetraalkoxytitanium, followed by 4 to 35 against tetraalkoxytitanium at 50 to 80 ° C.
- the present invention relates to a method for producing a (meth) acrylic acid ester, characterized by adding double weight of water to hydrolyze tetraalkoxytitanium to make it insoluble, and separating and removing water and insoluble components.
- the present invention relates to (2) the method for producing a (meth) acrylic acid ester according to (1), wherein the alcohol is polyoxyethylenated bisphenol A.
- the present invention is also characterized in that (3) the separation and removal of water is performed by collecting water by distillation, and the collected water is reused.
- the present invention relates to a method for producing the (meth) acrylic acid ester.
- the present invention provides (4) the above-mentioned (1) to (1), wherein the separated insoluble component is a tetraalkoxytitanium hydrolyzate having a particle size of 0.1 to 3. Omm. It relates to a method for producing a (meth) acrylic acid ester according to any one of 3).
- the titanium content in the produced (meth) acrylic acid ester is not more than lp pm.
- the present invention relates to a method for producing the described (meth) acrylate ester.
- V ⁇ (meth) acrylic acid ester from which tetraalkoxytitanium is easily removed from the reaction system and waste water is discharged.
- the method for producing a (meth) acrylic acid ester according to the present invention comprises transesterifying an alcohol and (meth) atrelate in the presence of tetraalkoxytitanium, followed by tetraalkoxy at 50 to 80 ° C.
- Add tetra-alkoxy titanium by adding 4 to 35 times the weight of water to titanium. Hydrolytically insolubilizes and separates and removes water and insoluble components.
- Alcohols used in the present invention are not particularly limited. Examples thereof include 1 butanol, 1,3 butanediol, 1,4 butanediol, 1,6 hexanediol, hexamethylenediol, and trimethylolethane.
- aromatic mono- and / or polyhydric alcohols in which the particle size of the tetraalkoxytitanium hydrolyzate contained in the recovered water tends to be 0.1 to 3 mm, are preferred.
- Oxyethylenated bisphenol A is more preferred.
- the (meth) acrylate used in the present invention is a (meth) acrylate suitable for transesterification, and is not particularly limited, but alkyl (meth) acrylate is preferred, for example, methyl (meta And lower alkyl (meth) acrylates such as acrylate, ethyl (meth) acrylate, propyl (meth) acrylate and butyl (meth) acrylate. This Among these, methyl (meth) acrylate is preferable from the viewpoint of reactivity and productivity.
- the amount of (meth) acrylate be used in excess of the number of moles of hydroxyl groups contained in the alcohols in order to complete the reaction in a short time or to improve the reaction conversion rate.
- the amount of (meth) acrylate is preferably 2 to 20 moles, more preferably 2.5 to 10 moles per mole of hydroxyl groups contained in the alcohol. .
- the amount of the (meth) acrylate is less than 2.5 mol, the ester exchange reaction is slow and unreacted alcohol tends to remain.
- the amount of the (meth) acrylate is more than 20 moles, the productivity is deteriorated and the process of recovering excess (meth) acrylate is likely to take a long time after completion of the reaction.
- the tetraalkoxytitanium used in the present invention includes, for example, tetratitanate such as tetramethoxide titanate, tetraethoxide titanate, tetrapropoxide titanate, tetraisopropoxide titanate, and tetrabutoxide titanate.
- tetratitanate such as tetramethoxide titanate, tetraethoxide titanate, tetrapropoxide titanate, tetraisopropoxide titanate, and tetrabutoxide titanate.
- ⁇ C alkoxide can be raised
- titanic acid tetraisopropoxide is preferable in terms of handling.
- the amount of tetraalkoxytitanium used is appropriately selected. It is preferably 0.01 to 5.0 parts by weight with respect to 100 parts by weight of the total amount of alcohols and (meth) acrylate. It is more preferably 0.02 to 1.0 part by weight. When the amount of the tetraalkoxytitanium used is less than 0.01 part by weight, the progress of the transesterification reaction tends to be slow. Conversely, when it exceeds 5.0 parts by weight, there is no particular advantage and it is uneconomical. It tends to be.
- the mixture of reaction raw materials is heated to reflux to reduce moisture in the reaction system prior to adding tetraalkoxytitanium to the reaction system. It is also preferable to keep the water in the reaction system during the reaction.
- a known polymerization inhibitor can be added.
- known polymerization inhibitors include phenols such as hydroquinone and hydride quinone monomethyl ether; copper salts such as phenothiazine and copper dibutyldithiocarbamate; manganese salts such as manganese acetate; nitro compounds; nitroso compounds; N-oxyl compounds such as hydroxy 2, 2, 6, 6-tetramethylpiperidinoxyl; and the like.
- the amount of polymerization inhibitor added is relative to the (meth) acrylic acid ester produced.
- the strength is preferably 5 to 2000 ppm, more preferably 10 to 500 ppm.
- the addition amount of the inhibitor is less than 5 ppm, the polymerization preventing effect is not always sufficient!
- the addition amount of the polymerization inhibitor exceeds 2000 ppm, there is a possibility of adverse effects such as inhibiting polymerization when the (meth) acrylic acid ester is used in the polymerization reaction.
- the method for producing a (meth) acrylic acid ester of the present invention it is preferable to blow a small amount of molecular oxygen into the reaction system during the reaction in order to prevent polymerization of the reaction solution.
- molecular oxygen air is preferably used in a diluted state, and dry air is preferably used.
- the amount of molecular oxygen to be used is preferably selected at a rate of 5 to 500 mlZ (25 to 2500 mlZ of air) per mole of alcohol selected as appropriate depending on the reactor shape and stirring power.
- the amount of molecular oxygen used is less than 5 mlZ, the polymerization preventing effect may not be sufficient.
- the amount of the molecular oxygen used exceeds 500 mlZ, there is a high possibility that (meth) acrylate is pushed out of the reaction system, and the loss of (meth) acrylate is likely to occur.
- an inert solvent that does not participate in the reaction can also be used in the transesterification reaction.
- the solvent include hydrocarbons such as benzene, toluene, xylene, hexane, heptane, octane, isooctane, and cyclohexane, and ethers such as dioxane.
- the transesterification reaction is preferably performed under normal pressure or reduced pressure at a reaction temperature of 60 to 130 ° C.
- the reaction temperature is less than 60 ° C, the reaction rate tends to be slow.
- the reaction temperature exceeds 130 ° C, side reactions such as coloring or polymerization of (meth) acrylate and (meth) acrylate may be caused.
- the transesterification reaction apparatus a normal apparatus for producing a (meth) acrylic acid ester by transesterification of alcohols and (meth) acrylate can be employed. Since the transesterification reaction is an equilibrium reaction, the by-product alcohol is usually an azeotrope with (meth) acrylate or a solvent for the purpose of increasing the conversion rate of alcohols. It is preferable to carry out the transesterification while distilling out of the system. For this reason, it is preferable to use a batch reactor equipped with a rectifying tower as the reaction apparatus.
- the insoluble component is a hydrolyzate of tetraalkoxytitanium used as a catalyst.
- Tetraalkoxytitanium is hydrolyzed by the addition of water, which is uniform in the reaction system, and becomes easily insoluble in (meth) acrylic acid esters. Therefore, it can be separated and removed by a method such as filtration.
- the water used may contain some salt and the like as long as it can be hydrolyzed and reused.
- the amount of water added is 4 to 35 times the weight of the tetraalkoxy titanium, preferably 4 to 30 times the weight, and more preferably 5 to 20 times the weight. If the amount of water added is less than 4 times the weight, the insoluble content of tetraalkoxytitanium becomes insufficient, and a large amount of tetraalkoxytitanium remains in the (meth) acrylate ester. If the amount of water added exceeds 35 times the weight, the labor for distilling and recovering the water is increased, which is industrially disadvantageous, and the particle size of the tetraalkoxytitanium hydrolyzate is reduced, resulting in filtration. Difficult to remove
- the liquid temperature for insolubilizing the tetraalkoxytitanium is 50 to 80 ° C, preferably 60 to 80 ° C.
- the liquid temperature is less than 50 ° C.
- insolubilization of tetraalkoxytitanium becomes insufficient, and a large amount of tetraalkoxytitanium remains in the (meth) acrylic acid ester.
- the liquid temperature exceeds 80 ° C, side reactions such as coloring and polymerization of (meth) acrylic acid esters may be caused, and when water is distilled and recovered, tetraalkoxytitan hydrolyzate particles The diameter becomes weak and difficult to remove by filtration.
- the particle size of the tetraalkoxytitanium hydrolyzate insoluble by adding water is preferably 0.1 to 3.0 mm, and 0.3 to 2. Omm. Is more preferable.
- the particle diameter of the tetraalkoxytitanium hydrolyzate is less than 0.1 mm, the tetraalkoxytitanium hydrolyzate tends to be difficult to remove by filtration.
- the particle size of the tetraalkoxytitanium hydrolyzate exceeds 3. Omm, water is separated and removed by distillation, and then the (meth) acrylic acid ester and insoluble components are transferred to the apparatus for the next filtration step. When piping Manufacturing defects such as clogging are likely to occur.
- the particle size of the tetraalkoxytitanium hydrolyzate can be determined by taking a photograph with, for example, an electron microscope, selecting 30 insoluble components in the photograph, measuring the particle size, and taking the average value. If the particles are not spherical, the longest diameter is taken as the particle diameter.
- the content of titanium in the (meth) acrylic acid ester obtained by the method of the present invention is preferably lppm or less, more preferably 0.5 ppm or less, and more preferably 0.1 Ippm or less. Even more preferably.
- the titanium content of the (meth) acrylic acid ester can be measured by, for example, a plasma emission analysis method or an atomic absorption method.
- the water recovered by distillation has almost no insoluble components such as titanium, and therefore can be reused without any problem for applications around this production facility. For example, it may be reused again in the process of insoluble tetraalkoxytitanium in the process for producing (meth) acrylic acid esters.
- the distillation operation is performed under reduced pressure or normal pressure.
- the titanium content is preferably Ippm or less, more preferably 0.5 ppm or less. It is even more preferable that it is Ippm or less.
- the titanium content exceeds Ippm, the (meth) acrylic acid ester produced by reusing this water tends to be favorable in quality.
- the system was heated to reflux to remove moisture in the system.
- 2.5 g of titanic acid tetraisopropoxide was added to cause transesterification.
- the reaction mixture was heated to reflux, and the top temperature of the rectification column was around 100 ° C, which is the boiling point of methyl methacrylate.
- the reaction progressed, it reached the boiling point of the azeotrope of methanol and methyl methacrylate.
- the reaction was carried out while distilling off methanol as an azeotrope with methyl methacrylate by adjusting the reflux ratio so that the temperature at the top of the column was in the range of S64 to 66 ° C.
- Polyoxyethylene bisphenol A (m + n ⁇ 10) monomethacrylate is 4% (HLC area ratio), and the target compound polyoxyethylenated bisphenol A dimethacrylate is 96% (HLC area ratio)
- the liquid in the kettle is filtered with a circulating filter, and the target polyoxy Ethyleneated bisphenol A dimetatalylate (m + n 10) 286 g (95% overall yield) was obtained.
- the titanium content in the polyoxyethylenated bisphenol A dimethacrylate was 0.1 ppm or less.
- Tetraalkoxy titanium was insoluble in water.
- the particle size of the tetraisopropoxide titanate hydrolyzate contained in the recovered water is 0.4 to 1.4 mm, and the resulting polyoxyethylenated bisphenol A dimethacrylate is Hm + n 10).
- the titanium content was 0.1 ppm or less, confirming that the recovered water could be reused.
- the titanium content in polyoxyethylene bisphenol A dimetatalylate was measured by an atomic absorption method.
- the reaction was carried out using the same apparatus, molar ratio and reaction conditions as in Example 1. After completion of the reaction, when the reaction solution was cooled to 90 ° C, 30 g of water (12 times the weight of tetraisopropoxide titanate) was added to hydrolyze the tetraisopropoxide titanate to insoluble water. did.
- the hydrolyzate of tetraisopropoxide titanate is dispersed in the kettle, its particle size is distributed between 0.03 and 0.2 mm, the average value is 0.1 mm, and cannot be separated and removed by filtration.
- the bisphenol A ethylene dimethacrylate has become cloudy. Further, the titanium content in the polyoxyethylenated bisphenol A dimetatalylate was 3.5 ppm, and it was found that the removal of the tetraisopropoxide titanate hydrolyzate was insufficient.
- the reaction was carried out using the same apparatus, molar ratio and reaction conditions as in Example 1. After completion of the reaction, when the reaction solution was cooled to 40 ° C, 30 g of water (12 times the weight of tetraisopropoxide titanate) was added to hydrolyze the tetraisopropoxide titanate to insoluble water. did.
- the hydrolyzate of tetraisopropoxide titanate settled in the kettle, and its particle size was distributed between 0.5 and 2.5 mm. The average value was 1.5 mm, but the polyoxyethylenated bisphenol A
- the titanium content in dimethacrylate was 31. Oppm, and it was found that the insoluble content of tetraisopropoxide titanate was insufficient.
- the hydrolyzate of tetraisopropoxide titanate was dispersed in the kettle, and the particle size was distributed from 0.05 mm to 0.4 mm. The average value was 0.2 mm, but it was separated and removed by filtration. It was not possible, and the polyoxyethylenated bisphenol A dimetatalylate became cloudy. The titanium content in the polyoxyethylenated bisphenol A dimethacrylate was 2. lppm, and it was found that removal of the tetraisopropoxide titanate hydrolyzate was insufficient.
- the reaction was carried out using the same apparatus, molar ratio and reaction conditions as in Example 1. After completion of the reaction, when the reaction solution was cooled to 75 ° C, 7.5 g of water (3 times the weight of tetraisopropoxide titanate) was added to hydrolyze the tetraisopropoxide titanate to insoluble water. I was ashamed. Subsequently, the pressure in the kettle was reduced again, and water was recovered by distillation, and excess methyl methacrylate was distilled off. As a result, tetraisopropoxide titanate hydrolyzate settled in the kettle, the particle size was distributed from 0.5 mm to 2.4 mm, and the average value was 1.5 mm. The titanium content in bisphenol A dimetatalylate was 25.5 ppm, and it was found that the insoluble content of tetrisopropoxide titanate was insufficient.
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- 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
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Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2008512044A JP5093103B2 (ja) | 2006-04-17 | 2007-03-27 | (メタ)アクリル酸エステルの製造方法 |
| CN200780013485.6A CN101421223B (zh) | 2006-04-17 | 2007-03-27 | (甲基)丙烯酸酯的制造方法 |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2006-113231 | 2006-04-17 | ||
| JP2006113231 | 2006-04-17 | ||
| JP2006201900 | 2006-07-25 | ||
| JP2006-201900 | 2006-07-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2007122964A1 true WO2007122964A1 (ja) | 2007-11-01 |
Family
ID=38624873
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2007/056346 Ceased WO2007122964A1 (ja) | 2006-04-17 | 2007-03-27 | (メタ)アクリル酸エステルの製造方法 |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP5093103B2 (ja) |
| CN (1) | CN101421223B (ja) |
| WO (1) | WO2007122964A1 (ja) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016040239A (ja) * | 2014-08-13 | 2016-03-24 | 日立化成株式会社 | (メタ)アクリル酸エステルの製造方法 |
| CN110396373A (zh) * | 2019-07-31 | 2019-11-01 | 中广核达胜加速器技术有限公司 | 一种基于eb固化的导热双面胶及其制备方法 |
| JP2020084129A (ja) * | 2018-11-30 | 2020-06-04 | 日立化成株式会社 | (ポリ)アルキレングリコール系(メタ)アクリレートの製造方法 |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101795840B1 (ko) | 2014-08-14 | 2017-11-08 | 주식회사 엘지화학 | 뷰틸 메타크릴레이트의 제조방법 |
| TWI689491B (zh) * | 2018-10-24 | 2020-04-01 | 中國石油化學工業開發股份有限公司 | 鄰苯基苯氧烷基丙烯酸酯及其製備方法 |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005179609A (ja) * | 2003-12-24 | 2005-07-07 | Miyoshi Oil & Fat Co Ltd | 水溶性(メタ)アクリル酸ポリアルキレングリコールエステルの製造方法 |
-
2007
- 2007-03-27 JP JP2008512044A patent/JP5093103B2/ja active Active
- 2007-03-27 CN CN200780013485.6A patent/CN101421223B/zh active Active
- 2007-03-27 WO PCT/JP2007/056346 patent/WO2007122964A1/ja not_active Ceased
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005179609A (ja) * | 2003-12-24 | 2005-07-07 | Miyoshi Oil & Fat Co Ltd | 水溶性(メタ)アクリル酸ポリアルキレングリコールエステルの製造方法 |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016040239A (ja) * | 2014-08-13 | 2016-03-24 | 日立化成株式会社 | (メタ)アクリル酸エステルの製造方法 |
| JP2020084129A (ja) * | 2018-11-30 | 2020-06-04 | 日立化成株式会社 | (ポリ)アルキレングリコール系(メタ)アクリレートの製造方法 |
| JP7363025B2 (ja) | 2018-11-30 | 2023-10-18 | 株式会社レゾナック | (ポリ)アルキレングリコール系(メタ)アクリレートの製造方法 |
| CN110396373A (zh) * | 2019-07-31 | 2019-11-01 | 中广核达胜加速器技术有限公司 | 一种基于eb固化的导热双面胶及其制备方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| JP5093103B2 (ja) | 2012-12-05 |
| JPWO2007122964A1 (ja) | 2009-09-03 |
| CN101421223A (zh) | 2009-04-29 |
| CN101421223B (zh) | 2012-12-12 |
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