WO2023022392A1 - 폴리트리메틸렌 에테르 글리콜 및 이의 제조 방법 - Google Patents
폴리트리메틸렌 에테르 글리콜 및 이의 제조 방법 Download PDFInfo
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- WO2023022392A1 WO2023022392A1 PCT/KR2022/011288 KR2022011288W WO2023022392A1 WO 2023022392 A1 WO2023022392 A1 WO 2023022392A1 KR 2022011288 W KR2022011288 W KR 2022011288W WO 2023022392 A1 WO2023022392 A1 WO 2023022392A1
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- ether glycol
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- 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
- C08G65/34—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from hydroxy compounds or their metallic derivatives
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- 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
- C08G65/34—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from hydroxy compounds or their metallic derivatives
- C08G65/46—Post-polymerisation treatment, e.g. recovery, purification, drying
Definitions
- the present invention relates to polytrimethylene ether glycol and methods for its preparation.
- Polyurethane is a polymer resin prepared by the reaction of isocyanate and polyol, and can be applied to almost all applications where polymers are applied, from coatings and adhesives to fibers, plastics and elastic foams.
- polyurethane industry which has been relying on a crude oil-based value chain, has faced new challenges due to global climate change and environmental pollution caused by plastics. Efforts are underway to do so.
- Polyol a main raw material of polyurethane
- the industrial application of the ether type which accounts for more than 70% of the amount of polyol for polyurethane, is extremely limited due to price and physical property constraints.
- Polytrimethylene ether glycol which uses 1,3-propanediol (1,3-PDO) derived from biomass as a raw material, is an ether-type polyol for greenhouse gas reduction. As the most realistic alternative, research to industrially apply PO3G has been conducted.
- polyurethane polymers to which PO3G was applied had superior properties in terms of elasticity and resilience and abrasion resistance compared to polyurethanes to which conventional ether-type polyols were applied, and bio-polyurethanes to which PO3G was applied were drop Beyond the in-type biopolymer, expansion of its application area is expected.
- the polymerization method of PO3G is an alcohol condensation reaction that proceeds under a strong acid catalyst, and polymer growth can be understood as a step growth mechanism.
- conventional petrochemical PPG and PTMG undergo polymer growth through chain growth mechanism through cationic or anionic ring-opening polymerization. Due to this difference, the molecular weight distribution of PO3G has a broad distribution compared to other ether-based polyols, and improvement on this A plan is being requested.
- condensation polymerization reaction is to react 1,3-propanediol under an acid catalyst for a long time, and accordingly, various oxidation by-products and low molecular weight oligomers are produced together.
- oxidation by-products include Acrolein, Propanal, 1-propanol, Allyl alcohol, etc., and the presence of these substances causes color discoloration during storage, lowers oxidation stability of products, induces VOC during processing, and causes It can affect reaction selectivity and rate.
- cyclic oligomers can cause many side effects in the industrial application of PO3G.
- polyester such as polyethylene terephthalate (PET), polytrimethylelene terephthalate (PTT), and poly lactic acid (PLA).
- PET polyethylene terephthalate
- PTT polytrimethylelene terephthalate
- PLA poly lactic acid
- the remaining cyclic oligomer is volatilized during spinning or film forming, causing unwanted contamination and corrosion of forming equipment and causing quality problems of molded products.
- the spinning process it affects the dyeability of the yarn as well as the problem of spinning fairness, and in the case of extrusion molding, it causes the thickness deviation of the molded sheet.
- cyclic oligomers cause degradation of mechanical properties and migration of the cyclic oligomers to the product surface.
- Polytetramethylene ether glycol (PTMG), an ether-based polyol, is also known to cause the same problems caused by cyclic oligomers in molded polyurethane products if cyclic oligomers formed during manufacturing are not properly removed.
- polytrimethylene ether glycol as described above, polymerization proceeds through an alcohol condensation reaction, so PDO and linear dimer with high polarity exist in the product, and a large polarity difference occurs with polytrimethylene ether glycol.
- the present invention provides a method for preparing polytrimethylene ether glycol, which can remove cyclic oligomers, 1,3-PDO and oxidation by-products from polytrimethylene ether glycol products, and polytrimethylene ether glycol prepared thereby. .
- the present invention provides a polytrimethylene ether glycol having a molecular weight distribution (Mw/Mn) of 2.0 to 2.5 and a cyclic oligomer content of 0.1 wt% or less.
- polytrimethylene ether glycol is produced from 1,3-propanediol (1,3-PDO) through condensation polymerization, polytrimethylene ether glycol with a wide molecular weight distribution is produced, and also cyclic oligomer, 1,3-PDO and oxidation by-products are produced together.
- the wide molecular weight distribution is mainly due to the produced cyclic oligomers, which leads to variations in physical properties of products using polytrimethylene ether glycol, limiting the application of polytrimethylene ether glycol.
- 1,3-PDO and various oxidation by-products which are unreacted substances, not only adversely affect the physical properties of polytrimethylene ether glycol, but also cause an unpleasant odor in itself, and a reaction rate in the post-processing reaction using polytrimethylene ether glycol. and selectivity, and adversely affect the color of polytrimethylene ether glycol.
- thin film distillation under specific conditions is performed to remove cyclic oligomers, 1,3-PDO and oxidation by-products from polytrimethylene ether glycol, and the purified polytrimethylene ether glycol has a molecular weight It has a narrow distribution and is characterized by reducing molecular weight deviation.
- the molecular weight distribution of the polytrimethylene ether glycol according to the present invention is 2.1 or higher, or 2.2 or higher; 2.4 or less, or 2.3 or less.
- the molecular weight distribution as described above is not significantly reduced in the molecular weight distribution of polytrimethylene ether glycol prepared from 1,3-PDO, that is, in the polytrimethylene ether glycol according to the present invention, polytrimethylene This means that only the components that affect the physical properties of ether glycol have been effectively removed.
- the cyclic oligomer content in the polytrimethylene ether glycol according to the present invention is 0.09 wt% or less, 0.08 wt% or less, 0.07 wt% or less, 0.06 wt% or less, or 0.05 wt% or less.
- the 'cyclic oligomer' means a substance having a cyclic chemical structure in which 1,3-PDO loses its functional group by an intramolecular reaction during condensation polymerization, and in particular, in the present invention, volatility that causes problems in product use is High dimer to pentamer (2 to 5 monomers are polymerized).
- the theoretical lower limit of the cyclic oligomer content in polytrimethylene ether glycol is 0 wt%, but may be, for example, 0.001 wt% or more, 0.002 wt% or more, 0.003 wt% or more, 0.004 wt% or more, or 0.005 wt% or more. .
- the content of 1,3-propanediol in the polytrimethylene ether glycol according to the present invention is less than or equal to 0.1 wt%. More preferably, the content of 1,3-propanediol in the polytrimethylene ether glycol according to the present invention is 0.09 wt% or less, 0.08 wt% or less, 0.07 wt% or less, 0.06 wt% or less, or 0.05 wt% or less. .
- the theoretical lower limit of the content of 1,3-propanediol in polytrimethylene ether glycol is 0 wt%, but for example, 0.001 wt% or more, 0.002 wt% or more, 0.003 wt% or more, 0.004 wt% or more, or 0.005 wt% % or more.
- the polytrimethylene ether glycol according to the present invention has a number average molecular weight of 1,500 to 4,000. More preferably, the polytrimethylene ether glycol according to the present invention has a number average molecular weight of 1,600 or more, 1,700 or more, 1,800 or more, or 1,900 or more; 3,800 or less, 3,600 or less, 3,400 or less, 3,200 or less, 3,000 or less, or 2,800 or less.
- the present invention provides a method for preparing the above-described polytrimethylene ether glycol comprising the following steps:
- step 1 polymerizing 1,3-propanediol to produce a product containing polytrimethylene ether glycol
- step 2 Distilling the product at a temperature of 100 to 250° C. and a pressure of 100.0 to 1.0 torr to remove cyclic oligomers (step 2).
- step 1 Polytrimethylene ether glycol preparation step (step 1)
- Step 1 of the present invention is a step of preparing a product containing polytrimethylene ether glycol by polymerizing 1,3-propanediol.
- step 1 is a reaction for preparing polytrimethylene ether glycol from 1,3-propanediol
- the reaction conditions are not particularly limited, and preferably, 1,3-propanediol is polycondensed using a polycondensation catalyst to obtain Prepare methylene ether glycol.
- the polycondensation catalyst is selected from the group consisting of Lewis acid, Bronsted acid, super acid, and mixtures thereof. More preferably, the catalyst is selected from the group consisting of inorganic acids, organic sulfonic acids, heteropolyacids and metal salts.
- the catalyst is selected from sulfuric acid, fluorosulfonic acid, phosphoric acid, p-toluenesulfonic acid, benzenesulfonic acid, phosphotungstic acid, phosphomolybdic acid, trifluoromethanesulfonic acid, 1,1,2,2-tetrafluoro As ethanesulfonic acid, 1,1,1,2,3,3-hexafluoropropanesulfonic acid, bismuth triflate, yttrium triflate, ytterbium triflate, neodymium triflate, lanthanum triflate, scandium triflate and zirconium triflate.
- the catalyst is also selected from the group consisting of zeolites, fluorinated aluminas, acid treated silica, acid treated silica-alumina, heteropolyacids, and heteropolyacids supported on zirconia, titania, alumina and/or silica. More preferably, sulfuric acid is used as a polycondensation catalyst.
- the catalyst is preferably used in a concentration of 0.1 to 20 wt%, more preferably 1 to 5 wt%, based on the weight of the reaction mixture.
- the polycondensation is performed at 150°C to 250°C, more preferably at 160°C to 220°C.
- the reaction is preferably carried out in the presence of an inert gas, preferably under nitrogen.
- a hydrolysis reaction may be additionally performed to remove an acid bound to polytrimethylene ether glycol.
- a neutralization reaction may be further performed following the hydrolysis reaction.
- Step 2 of the present invention is a step of distilling the product of step 1 to remove cyclic oligomers, 1,3-PDO and oxidation by-products.
- the thin film distillation conditions of step 2 are performed under conditions of a temperature of 100 to 250 ° C and a pressure of 100.0 to 1.0 torr.
- the term 'thin film distillation' used in the present invention refers to a distillation method using increasing the surface area in contact with a heat source by making a mixture to be separated into a thin film.
- the mixture introduced into the thin-film distiller forms a thin film on the inner wall of the thin-film distiller by physical force (eg, wiper), and is heated to an appropriate temperature through a heat source (eg, heating media).
- a heat source eg, heating media.
- a condenser for recovering the evaporated material that is, the material to be removed may be provided inside the thin film distiller.
- the thin film distillation has the advantage of being able to continuously apply the mixture to be separated.
- thin-film distillation can be performed continuously by continuously introducing a mixture to be separated into the upper part of the still, and recovering the purified mixture into the lower part of the still.
- Thin-film distillation in step 2 is performed at a temperature of 100 to 250 ° C, preferably 110 ° C or higher, 120 ° C or higher, 130 ° C or higher, 140 ° C or higher, 150 ° C or higher, 160 ° C or higher, 170 ° C or higher, or 180 ° C or higher. C or higher; It is carried out at 240 ° C or less, or 230 ° C or less.
- the temperature is less than 150 ° C, the effect of distillation is insignificant, and it is difficult to remove the material to be removed, and when the temperature exceeds 250 ° C, there is a concern that thermal oxidation of polytrimethylene ether glycol may occur.
- the thin film distillation in step 2 is performed at a pressure of 100.0 to 1.0 torr, preferably 90.0 torr or less, 80.0 torr or less, 70.0 torr or less, 60.0 torr or less, or 50.0 torr or less, 5.0 torr or more, 10.0 torr or more, It is performed at 15.0 torr or more, or 20.0 torr or more.
- a pressure of 100.0 to 1.0 torr preferably 90.0 torr or less, 80.0 torr or less, 70.0 torr or less, 60.0 torr or less, or 50.0 torr or less, 5.0 torr or more, 10.0 torr or more, It is performed at 15.0 torr or more, or 20.0 torr or more.
- a component volatilized in the thin film distiller that is, a substance to be removed may be discharged to a lower portion of the thin film distiller through a condenser, and through this, the remaining purified mixture, that is, a distillation residue may be separately recovered.
- the present invention provides a method for producing polytrimethylene ether glycol, capable of removing cyclic oligomers, 1,3-PDO and oxidation by-products from polytrimethylene ether glycol products, and polytrimethylene prepared thereby Ether glycols can be provided.
- the polytrimethylene ether glycol prepared in each of the following examples was dissolved in THF (tetrahydrofuran) at a concentration of 1 wt% and gel permeation chromatography (manufacturer: WATERS, model: Alliance, Detecter: 2414 RI Detector, Column: Strygel HR 0.5/1 /4) was used, and polyethylene glycol was used as a standard material to calculate the weight average molecular weight (Mw) and number average molecular weight (Mn), respectively. From the Mw and Mn measured in this way, the molecular weight distribution value and the low molecular weight oligomer content of Mn 400 or less were calculated.
- THF tetrahydrofuran
- polytrimethylene ether glycol prepared in each of the following examples was dissolved in 10 mL of methanol, and then measured using gas chromatography (model: agilent 7890, column: DBWAX), and 1 g of each reference material was dissolved in 10 mL of methanol. After dissolving in 1,3-PDO content (wt%) and cyclic oligomer content (wt%) contained in polytrimethylene ether glycol were calculated by further diluting according to the concentration and measuring with a standard reference.
- A is the amount of KOH solution used in the blank test
- B is the amount of KOH solution used for sample titration.
- the measured OHV was converted into an end group average molecular weight (Mn) according to Equation 2 below.
- deionized water 5 kg was added, and the resulting mixture was maintained at 95° C. for 4 hours under nitrogen blowing to hydrolyze acid esters formed during polymerization.
- 170 g of soda ash in 1000 mL of deionized water was added and the mixture was heated to 80° C. while stirring under a nitrogen stream. Neutralization was continued for 1 hour and then the product was dried at 120° C. under reduced pressure and filtered using a Nutche filter to obtain a polytrimethylene ether glycol product.
- the thin-film distillation equipment was VTA's VKL-70-4 model, a short path distillation type in which a condenser was installed inside the distillation column, and the evaporation diameter and surface area were 70 mm and 0.04 m 2 , respectively.
- VTA's VKL-70-4 model a short path distillation type in which a condenser was installed inside the distillation column
- the evaporation diameter and surface area were 70 mm and 0.04 m 2 , respectively.
- polytrimethylene ether glycol is formed into a thin film with a uniform thickness inside the column by a mechanical stirrer equipped with a wiper, and the volatilized low molecular weight materials are condensed in the internal condenser and discharged toward the distillate. Methylene ether glycol was discharged as a residue.
- Example 1 Example 2
- Example 3 Example 4
- Example 5 Example 6
- Example 7 Feed polyol - Polyol A Polyol A Polyol A Polyol A Polyol A Polyol A Polyol A Polyol A Polyol A Feed rate kg/hr One One One One One One One One One One One One One One One One One Evap. Temp. °C 200 180 180 180 200 200 250 250 Internal condenser Temp.
- Example 12 Feed polyol - Polyol B Polyol B Polyol B Polyol B Polyol B Polyol B Polyol B Polyol B Feed rate kg/hr One One One One One One One One One Evap. Temp. °C 200 180 180 200 200 250 250 Internal condenser Temp.
- N,D 1,3-PDO content wt% N.D. 0.06 0.07 N.D. 0.02 N.D. 0.01 Linear dimer content wt% N.D. 0.04 0.04 N.D. N.D. N.D. N.D. Total oligomer content wt% 0.16 1.69 1.72 1.54 1.59 1.31 1.41 Oxidation by-product content ppmw N.D. N.D. N.D. N.D. N.D. N.D. N.D.
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- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Description
| OHV | 말단기 적정 Mn |
Poly dispersity | 싸이클릭 올리고머함량(wt%) | Linear Dimer(wt%) | Total Oligomer 함량(wt%) | PDO 함량(wt%) | 산화 부산물 함량(ppmw) | |
| 폴리올 A | 60.88 | 1843.2 | 2.3 | 0.41 | 0.19 | 2.3 | 0.23 | 290 |
| 폴리올 B | 46.35 | 2421 | 2.4 | 0.32 | 0.12 | 2.1 | 0.08 | 210 |
| 단위 | 비교예 1 | 실시예 1 | 실시예 2 | 실시예 3 | 실시예 4 | 실시예 5 | 실시예 6 | 실시예 7 | |
| Feed polyol | - | 폴리올 A | 폴리올 A | 폴리올 A | 폴리올 A | 폴리올 A | 폴리올 A | 폴리올 A | 폴리올 A |
| Feed rate | kg/hr | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Evap. Temp. | ℃ | 200 | 180 | 180 | 180 | 200 | 200 | 250 | 250 |
| Internal condenser Temp. | ℃ | 50 | 50 | 50 | 50 | 50 | 50 | 50 | 50 |
| 진공도 | torr | 0.1 | 5 | 10 | 30 | 30 | 50 | 30 | 50 |
| Distillate | wt% | 2.1 | 0.3 | 0.3 | 0.3 | 0.5 | 0.4 | 0.6 | 0.5 |
| Resiude | wt% | 97.9 | 99.7 | 99.7 | 99.7 | 99.5 | 99.6 | 99.4 | 99.5 |
| OHV | - | 52.43 | 58.62 | 58.83 | 59.23 | 57.21 | 58.11 | 56.35 | 56.92 |
| 말단기 평균 Mn | g/mol | 2140.38 | 1914.36 | 1907.53 | 1894.65 | 1961.55 | 1931.17 | 1991.48 | 1971.54 |
| Polydispersity | - | 1.9 | 2.2 | 2.2 | 2.2 | 2.1 | 2.1 | 2.1 | 2.1 |
| 싸이클릭 올리고머 함량 | wt% | N.D. | 0.02 | 0.03 | 0.06 | N.D | 0.03 | N.D | N,D |
| 1,3-PDO 함량 | wt% | N.D | 0.03 | 0.06 | 0.08 | 0.01 | 0.02 | N.D | 0.01 |
| Linear Dimer 함량 | wt% | N.D | 0.01 | 0.02 | 0.02 | N.D | N.D | N.D | N.D |
| 총 oligomer 함량 | wt% | 0.19 | 1.82 | 1.85 | 1.88 | 1.72 | 1.78 | 1.47 | 1.61 |
| 산화 부산물 함량 | ppmw | N.D | N.D | N.D | N.D | N.D | N.D | N.D | N.D |
| 단위 | 비교예 2 | 실시예 8 | 실시예 9 | 실시예 10 | 실시예 11 | 실시예 12 | 실시예 13 | |
| Feed polyol | - | 폴리올 B | 폴리올 B | 폴리올 B | 폴리올 B | 폴리올 B | 폴리올 B | 폴리올 B |
| Feed rate | kg/hr | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Evap. Temp. | ℃ | 200 | 180 | 180 | 200 | 200 | 250 | 250 |
| Internal condenser Temp. | ℃ | 50 | 50 | 50 | 50 | 50 | 50 | 50 |
| 진공도 | torr | 0.2 | 10 | 30 | 30 | 50 | 30 | 50 |
| Distillate | wt% | 1.8 | 0.3 | 0.3 | 0.7 | 0.4 | 0.8 | 0.7 |
| Resiude | wt% | 98.2 | 99.7 | 99.7 | 99.3 | 99.6 | 99.2 | 99.3 |
| OHV | - | 41.09 | 44.85 | 45.23 | 43.65 | 44.15 | 42.96 | 43.48 |
| 말단기 평균 Mn | g/mol | 2731.00 | 2502.00 | 2481.00 | 2571.00 | 2542.00 | 2612.00 | 2581.00 |
| Polydispersity | - | 2.0 | 2.3 | 2.3 | 2.2 | 2.2 | 2.1 | 2.2 |
| 싸이클릭 올리고머 함량 | wt% | N.D. | 0.03 | 0.06 | N.D | 0.03 | N.D | N,D |
| 1,3-PDO 함량 | wt% | N.D | 0.06 | 0.07 | N.D | 0.02 | N.D | 0.01 |
| Linear Dimer 함량 | wt% | N.D | 0.04 | 0.04 | N.D | N.D | N.D | N.D |
| 총 oligomer 함량 | wt% | 0.16 | 1.69 | 1.72 | 1.54 | 1.59 | 1.31 | 1.41 |
| 산화 부산물 함량 | ppmw | N.D | N.D | N.D | N.D | N.D | N.D | N.D |
Claims (10)
- 분자량 분포(Mw/Mn)가 2.0 내지 2.5이고,싸이클릭 올리고머의 함량이 0.1 wt% 이하인,폴리트리메틸렌 에테르 글리콜.
- 제1항에 있어서,상기 분자량 분포가 2.1 내지 2.4인,폴리트리메틸렌 에테르 글리콜.
- 제1항에 있어서,상기 싸이클릭 올리고머의 함량이 0.05 wt% 이하인,폴리트리메틸렌 에테르 글리콜.
- 제3항에 있어서,상기 싸이클릭 올리고머는 수평균 분자량 400 이하의 올리고머인,폴리트리메틸렌 에테르 글리콜.
- 제1항에 있어서,상기 폴리트리메틸렌 에테르 글리콜 내 1,3-프로판디올의 함량이 0.1 wt% 이하인,폴리트리메틸렌 에테르 글리콜.
- 제1항에 있어서,상기 폴리트리메틸렌 에테르 글리콜의 수평균 분자량이 1,500 내지 4,000인,폴리트리메틸렌 에테르 글리콜.
- 1,3-프로판디올을 중합하여 폴리트리메틸렌 에테르 글리콜을 포함하는 생성물을 제조하는 단계(단계 1); 및상기 생성물을 100 내지 250℃의 온도, 및 100.0 내지 1.0 torr의 압력의 조건으로 증류하여, 싸이클릭 올리고머를 제거하는 단계(단계 2)를 포함하는,제1항 내지 제6항 중 어느 한 항의 폴리트리메틸렌 에테르 글리콜의 제조 방법.
- 제7항에 있어서,상기 단계 2의 온도는 180℃ 내지 240℃인,폴리트리메틸렌 에테르 글리콜의 제조 방법.
- 제7항에 있어서,상기 단계 2의 압력은 100.0 torr 내지 5.0 torr인,폴리트리메틸렌 에테르 글리콜의 제조 방법.
- 제7항에 있어서,상기 단계 2의 압력은 50.0 torr 내지 1.0 torr인,폴리트리메틸렌 에테르 글리콜의 제조 방법.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2024507992A JP2024534763A (ja) | 2021-08-17 | 2022-08-01 | ポリトリメチレンエーテルグリコールおよびその製造方法 |
| US18/576,008 US20240309152A1 (en) | 2021-08-17 | 2022-08-01 | Polytrimethylene ether glycol and method for preparation thereof |
| CN202280047040.4A CN117597380A (zh) | 2021-08-17 | 2022-08-01 | 聚三亚甲基醚二醇及其制备方法 |
| EP22858631.9A EP4389794A4 (en) | 2021-08-17 | 2022-08-01 | POLYTRIMETHYLENE ETHER GLYCOL AND PROCESS FOR ITS MANUFACTURE |
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| KR10-2021-0108050 | 2021-08-17 |
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| PCT/KR2022/011288 Ceased WO2023022392A1 (ko) | 2021-08-17 | 2022-08-01 | 폴리트리메틸렌 에테르 글리콜 및 이의 제조 방법 |
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| Country | Link |
|---|---|
| US (1) | US20240309152A1 (ko) |
| EP (1) | EP4389794A4 (ko) |
| JP (1) | JP2024534763A (ko) |
| KR (1) | KR20230026089A (ko) |
| CN (1) | CN117597380A (ko) |
| WO (1) | WO2023022392A1 (ko) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100233797B1 (ko) * | 1992-03-06 | 1999-12-01 | 미리암 디. 메코너헤이 | 단거리 증류에 의한 폴리에테르 글리콜의 분자량 분포의 감소 방법 |
| KR20020063213A (ko) * | 1999-12-17 | 2002-08-01 | 이 아이 듀폰 디 네모아 앤드 캄파니 | 폴리트리메틸렌 에테르 글리콜 및 그의 공중합체의 제조방법 |
| KR20070024607A (ko) * | 2004-06-18 | 2007-03-02 | 이 아이 듀폰 디 네모아 앤드 캄파니 | 폴리트리메틸렌 에테르 글리콜의 제조 방법 |
| KR20140038423A (ko) * | 2011-04-26 | 2014-03-28 | 이 아이 듀폰 디 네모아 앤드 캄파니 | 폴리트라이메틸렌 에테르 글리콜의 제조 방법 |
| WO2019066310A1 (ko) * | 2017-09-29 | 2019-04-04 | 에스케이케미칼 주식회사 | 폴리트리메틸렌 에테르 글리콜 및 이의 제조 방법 |
-
2021
- 2021-08-17 KR KR1020210108050A patent/KR20230026089A/ko active Pending
-
2022
- 2022-08-01 EP EP22858631.9A patent/EP4389794A4/en active Pending
- 2022-08-01 WO PCT/KR2022/011288 patent/WO2023022392A1/ko not_active Ceased
- 2022-08-01 US US18/576,008 patent/US20240309152A1/en active Pending
- 2022-08-01 CN CN202280047040.4A patent/CN117597380A/zh active Pending
- 2022-08-01 JP JP2024507992A patent/JP2024534763A/ja active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100233797B1 (ko) * | 1992-03-06 | 1999-12-01 | 미리암 디. 메코너헤이 | 단거리 증류에 의한 폴리에테르 글리콜의 분자량 분포의 감소 방법 |
| KR20020063213A (ko) * | 1999-12-17 | 2002-08-01 | 이 아이 듀폰 디 네모아 앤드 캄파니 | 폴리트리메틸렌 에테르 글리콜 및 그의 공중합체의 제조방법 |
| KR20070024607A (ko) * | 2004-06-18 | 2007-03-02 | 이 아이 듀폰 디 네모아 앤드 캄파니 | 폴리트리메틸렌 에테르 글리콜의 제조 방법 |
| KR20140038423A (ko) * | 2011-04-26 | 2014-03-28 | 이 아이 듀폰 디 네모아 앤드 캄파니 | 폴리트라이메틸렌 에테르 글리콜의 제조 방법 |
| WO2019066310A1 (ko) * | 2017-09-29 | 2019-04-04 | 에스케이케미칼 주식회사 | 폴리트리메틸렌 에테르 글리콜 및 이의 제조 방법 |
| US20200277437A1 (en) | 2017-09-29 | 2020-09-03 | Sk Chemicals Co., Ltd. | Polytrimethylene ether glycol and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| See also references of EP4389794A4 |
Also Published As
| Publication number | Publication date |
|---|---|
| EP4389794A4 (en) | 2025-06-25 |
| EP4389794A1 (en) | 2024-06-26 |
| US20240309152A1 (en) | 2024-09-19 |
| CN117597380A (zh) | 2024-02-23 |
| TW202319437A (zh) | 2023-05-16 |
| KR20230026089A (ko) | 2023-02-24 |
| JP2024534763A (ja) | 2024-09-26 |
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