WO2017204378A1 - 폴리알킬렌 글리콜의 말단 알킬화 촉매 및 이를 이용한 폴리알킬렌 글리콜의 말단 알킬화 방법 - Google Patents
폴리알킬렌 글리콜의 말단 알킬화 촉매 및 이를 이용한 폴리알킬렌 글리콜의 말단 알킬화 방법 Download PDFInfo
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- B01J27/16—Phosphorus; Compounds thereof containing oxygen, i.e. acids, anhydrides and their derivates with N, S, B or halogens without carriers or on carriers based on C, Si, Al or Zr; also salts of Si, Al and Zr
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Definitions
- the present invention relates to alkylation catalysts for alkylating terminal hydroxyl groups of polyalkylene glycols with high conversions and methods for terminal alkylation of polyalkylene glycols, which are environmentally and economically alkylated in the presence of said alkylation catalysts.
- Polyalkylene glycol is a kind of synthetic lubricating oil which is polymerized by adding ethylene oxide or propylene oxide with alcohol as a starting material. Consists of
- the polyalkylene glycol has been commercialized as a refrigeration oil for automobile air conditioners by Idemitsu Kosan Co., Ltd. in Japan for a long time, and has been sold to the global automotive OEM industry and the secondary market.
- polyalkylene glycols having a terminal hydroxyl group (-OH) have a high moisture hygroscopicity in the air by the hydroxyl group (-OH) during use as a refrigeration oil of an air conditioner, resulting in a high freezing point due to moisture sucked into the refrigeration oil, and the appearance of air-conditioning parts.
- This problem has been raised steadily, and there has been an attempt to solve the problem by replacing the hydroxyl group of the terminal of the polyalkylene glycol with an alkyl group to solve the problem.
- European Patent Publication No. 3002487 discloses a method of alkylating a terminal of a polyalkylene glycol with a methyl group by using methylsulfate as an alkylating agent, but is faster than using methyl halide as an alkylating agent.
- Methylsulfate methylsulfate
- methylsulfate is also known as a toxic substance itself, there was a problem that it is not environmentally friendly.
- the main object of the present invention is to solve the above problems, and to provide a polyalkylene glycol terminal alkylation catalyst and a method for preparing the same, which are capable of alkylating polyalkylene glycol with high conversion in an environmentally friendly manner.
- the present invention also provides a method for terminal alkylation of polyalkylene glycol which is capable of alkylating polyalkylene glycol with high conversion rate, environmentally and economically, using the terminal alkylation catalyst of polyalkylene glycol.
- a catalyst for alkylating the terminal of the polyalkylene glycol by reacting the polyalkylene glycol and the alkylating agent, polyalkylene glycol, characterized in that it contains alumina It provides a catalyst for the terminal alkylation reaction of.
- the alumina may be characterized as being a mixture of eta-alumina or gamma-alumina or a mixture of eta-alumina and gamma-alumina.
- the alkylating agent may be characterized in that the dialkyl carbonate.
- the catalyst for the terminal alkylation reaction of the polyalkylene glycol may be characterized in that the alumina-aluminum phosphate catalyst further containing aluminum phosphate (Aluminum Phosphate).
- the alumina in the alumina-aluminum phosphate catalyst may be characterized by containing at least 13% by weight or less than 100% by weight relative to the total weight of the catalyst.
- Another embodiment of the present invention a method for producing an alumina catalyst, (a) adding a precipitant to the first aqueous solution of alumina precursor to form an alumina hydroxide; And (b) drying the formed alumina hydroxide and then calcining the same, to provide a method for preparing a catalyst for terminal alkylation reaction of polyalkylene glycol.
- a method for producing an alumina-aluminum phosphate catalyst to which aluminum phosphate is added to the alumina catalyst (a-1) adding a precipitant to the aqueous solution of the first alumina precursor to form an alumina hydroxide; (a-2) mixing the second alumina precursor aqueous solution and the phosphate precursor, and then adding a precipitant to form aluminum phosphate hydroxide; (a-3) mixing the alumina hydroxide of step (a-1) and the aluminum phosphate hydroxide of step (a-2), and then adding a precipitant to the mixed hydroxide to form an alumina-aluminum phosphate mixed hydroxide ; And (b) drying the alumina-aluminum phosphate mixed hydroxide, followed by calcination, to provide a method for preparing a catalyst for terminal alkylation reaction of polyalkylene glycol.
- the first alumina precursor or the second alumina precursor is independently of each other aluminum nitrate, sodium aluminate, potassium aluminate, aluminum hydrochloride, aluminum sulfate, aluminum acetate It may be characterized in that at least one member selected from the group consisting of aluminum alkoxide and trimethyl aluminum.
- the phosphate precursor is one or more selected from the group consisting of phosphoric acid, oxophosphate, pyrophosphate, polyphosphate, metaphosphate, ultra phosphate, diammonium hydrophosphate and ammonium dihydrophosphate It can be characterized.
- the phosphate precursor of step (a-2) may be characterized in that the mixture of 0.77 ⁇ 1.53 mol to 1 mol of the second alumina precursor.
- the precipitant of each step may be characterized in that at least one member selected from the group consisting of ammonia water, sodium hydroxide, ammonium hydroxide, sodium carbonate, calcium carbonate and ammonium carbonate.
- the precipitant may be added in the form of an aqueous solution.
- the precipitant of each step may be added until the pH of the precursor aqueous solution is 9 to 11.
- the step (b) may be characterized in that the drying for 15 to 30 hours at 90 ⁇ 150 °C, calcination for 5 to 30 hours at 500 ⁇ 700 °C.
- the aluminum phosphate hydroxide in the step (a-3) may be characterized in that the mixing in a molar ratio of 0 to 5.9 with respect to 1 mol of alumina hydroxide.
- the polyalkylene glycol characterized in that the alkylating agent and the polyalkylene glycol in the presence of the terminal alkylation catalyst of the polyalkylene glycol at 120-170 °C temperature, atmospheric pressure ⁇ 3kgf / cm2 pressure Provided are terminal alkylation methods of.
- the alkylating agent may be characterized in that the dialkyl carbonate (dialkyl carbonate).
- the alkylating agent may be characterized in that the reaction with 10 to 40 moles with respect to 1 mole of polyalkylene glycol.
- an alkylation catalyst capable of alkylating the terminal of the polyalkylene glycol at high conversion rate without generating harmful substances, and a method for preparing the same. It is possible to economically alkylate the end of the polyalkylene glycol can be useful in various fields such as refrigeration oil for automotive air conditioners.
- Figure 2 is a graph of the XRD analysis of the catalyst prepared in Preparation Example 2 of the present invention.
- the present invention relates to a terminal alkylation catalyst of polyalkylene glycol, which comprises alumina as a catalyst for reacting polyalkylene glycol with an alkylating agent to alkylate the terminal of polyalkylene glycol.
- the terminal alkylation catalyst of the polyalkylene glycol according to the present invention can be alkylated the terminal of the polyalkylene glycol at high conversion rate using dialkyl carbonate which is an environmentally friendly alkylating agent.
- the polyalkylene glycol may be used as long as it is a compound in which a hydroxyl group is substituted at the terminal, and examples thereof include polyether polyols, aryl alcohols, and alkylene oxide adducts. And the like.
- the alkylating agent may be a dialkyl carbonate such as metal carbonate, diethyl carbonate, ethylmethyl carbonate, dipropyl carbonate, methyl propyl carbonate, and the like, preferably, dimethyl carbonate, diethyl carbonate, or the like.
- dialkyl carbonate such as metal carbonate, diethyl carbonate, ethylmethyl carbonate, dipropyl carbonate, methyl propyl carbonate, and the like, preferably, dimethyl carbonate, diethyl carbonate, or the like.
- the terminal alkylation catalyst of the polyalkylene glycol includes alumina, preferably the alumina may be eta-alumina or gamma-alumina, and may be a mixture of eta-alumina and gamma-alumina.
- the alumina catalyst may further include aluminum phosphate.
- the content of aluminum phosphate is preferably less than 87% by weight in terms of catalyst performance.
- the alkylation catalyst of polyalkylene glycol according to the present invention can alkylate polyalkylene glycol without generating harmful substances, and thus can be usefully used in various fields such as refrigeration oil for automobile air conditioners.
- the present invention provides a method for preparing alumina hydroxide, comprising the steps of: (a) adding a precipitant to a first aqueous solution of alumina precursor to form alumina hydroxide; And (b) drying the formed alumina hydroxide and then calcining, to a method for preparing a terminal alkylation catalyst for polyalkylene glycol and a terminal alkylation catalyst for polyalkylene glycol prepared in the method.
- a precipitant is added to an aqueous solution of a first alumina precursor to form a first alumina hydroxide [(a)].
- the first alumina precursor aqueous solution is contained in 5 to 60 parts by weight of the first alumina precursor with respect to 100 parts by weight of distilled water, when the first alumina precursor is contained in less than 5 parts by weight based on 100 parts by weight of distilled water, When the content of the alumina precursor is too low, the catalyst production efficiency is lowered, and when it exceeds 60 parts by weight, it may take a long time to dissolve the first alumina precursor at room temperature, or part of it may be precipitated without dissolution. As this proceeds, stirring may not proceed due to excessive solid formation.
- the first alumina precursor to be used is generally used in the art, but is not particularly limited.
- Aluminum nitrate, sodium aluminate, potassium aluminate, aluminum hydrochloride, aluminum sulfate, acetic acid Aluminum, aluminum alkoxide, trimethyl aluminum, etc. can be used.
- the precipitant may be used without limitation as long as it is a compound capable of precipitating the first alumina precursor to form an alumina hydroxide, preferably a basic compound such as ammonia water, sodium hydroxide, ammonium hydroxide, sodium carbonate, calcium carbonate, ammonium carbonate or urea. It may be, preferably ammonia water or sodium hydroxide.
- a basic compound such as ammonia water, sodium hydroxide, ammonium hydroxide, sodium carbonate, calcium carbonate, ammonium carbonate or urea. It may be, preferably ammonia water or sodium hydroxide.
- the content of the precipitant is preferably added until the pH of the first alumina aqueous solution is 9-11.
- the pH of the precursor solution is excessively added to the precursor aqueous solution, the pH may be higher than the above range, which may cause a problem of low reactivity due to an increase of the catalyst base point. If the pH is lower than the above range, the concentration of the precipitant may be insufficient. This may cause a problem that alumina hydroxide is not sufficiently formed.
- the alumina hydroxide thus obtained can be further separated from the solution by using techniques well known in the art. For example, it may include one or more of filtration, decantation, evaporation, washing, drying and spray drying, preferably filtration, washing or spray drying, and, if coated on a catalyst support or structure, after washing, application It may be dried or applied coated after the calcination process described below.
- alumina hydroxide thus obtained is dried and then calcined to prepare a terminal alkylation catalyst of polyalkylene glycol in the form of alumina oxide [step (b)].
- the alumina hydroxide may be dried at 90 to 150 ° C. for 15 to 30 hours. After drying, the alumina hydroxide is heated to a high temperature in an oxidizing atmosphere such as air or an oxygen-containing mixed gas to perform calcination.
- an oxidizing atmosphere such as air or an oxygen-containing mixed gas
- Preferred conditions for the calcination can be carried out at 500 ⁇ 700 °C for 5 to 30 hours. If outside the range of calcination conditions, a problem may occur such that a catalyst having no suitable activity for the production of alkylated polyalkylene glycol is produced because the required catalyst form is not formed.
- the method for producing an alkylation catalyst of polyalkylene glycol according to the present invention may be prepared further comprising aluminum phosphate.
- the production method of the catalyst further comprising the aluminum phosphate is as follows.
- step (a-1) forming alumina hydroxide by adding a precipitant to the first alumina precursor aqueous solution;
- step (a-2) mixing the second alumina precursor solution and the phosphate precursor, and then adding a precipitant to form aluminum phosphate hydroxide;
- step (a-3) the alumina hydroxide of step (a-1) and Mixing the aluminum phosphate (Aluminum Phosphate) hydroxide of step (a-2), and then adding a precipitant to the mixed hydroxide to form an alumina-aluminum phosphate mixed hydroxide;
- step (b) drying the alumina-aluminum phosphate mixed hydroxide and then calcining.
- a precipitant is added to an aqueous solution of a first alumina precursor to form a first alumina hydroxide [(a-1)].
- a first alumina hydroxide [(a-1)]
- step (a-2) the second alumina precursor aqueous solution and the phosphate precursor are mixed, and then a precipitant is added to form an aluminum phosphate hydroxide (step (a-2)).
- the second alumina precursor solution is a mixture of the second alumina precursor in distilled water, the content of which is 1 to 40 parts by weight of the second alumina precursor with respect to 100 parts by weight of distilled water.
- the content of the second alumina precursor is too low to lower the catalyst production efficiency, and when it exceeds 40 parts by weight, the second alumina at room temperature It may take a long time to dissolve the precursor or may be precipitated without dissolving a part of the precursor.As the reactant precipitation progresses by reacting with the second alumina precursor and the precipitant, the excess solids are formed and the stirring is not performed due to the formation of excess solids. This can be difficult.
- the second alumina precursor may be the same as or different from the above-described first alumina precursor, and examples thereof include aluminum nitrate, sodium aluminate, and potassium aluminate.
- Aluminum chloride, aluminum sulfate, aluminum acetate, aluminum alkoxide, trimethyl aluminum, and the like can be used.
- the phosphate precursor is, but is not limited to, phosphoric acid, oxophosphate, pyrophosphate, polyphosphate, metaphosphate, ultra phosphate, diammonium hydrophosphate, ammonium dihydrophosphate and the like, and the materials forming the salt are calcium, sodium, iron , Potassium and the like.
- the mixing ratio of the phosphate precursor and the second alumina precursor may be mixed such that the molar ratio (P / Al molar ratio) of aluminum (Al) is 0.77 to 1.53 moles with respect to 1 mole of phosphorus (P). If the molar ratio is less than 0.77 moles, the second alumina precursor does not sufficiently proceed to the alumina phosphate due to the low concentration of phosphate precursors, and if the molar ratio exceeds 1.53 moles, the excess precipitant may be Problems that can be used can arise.
- the precipitant used in the mixture of the second alumina precursor solution and the phosphate precursor may be a precipitant used when forming the aluminum hydroxide, or may be different, and the amount of the precursor is mixed with the second alumina precursor solution and the phosphate precursor. It is preferable to add until the pH of 9 to 11. When the precipitant is added to the precursor solution in excess of the pH, the reactivity may be lowered. If the pH is lower than the above range, the aluminum phosphate hydroxide may be sufficiently formed due to insufficient concentration of the precipitant. Problems such as not being formed may occur.
- the aluminum hydroxide and aluminum phosphate hydroxide, each of which is precipitated with the precipitant, are mixed, and then the precipitant is added to the mixed hydroxide to form the alumina-aluminum phosphate mixed hydroxide [(a-3)].
- the aluminum phosphate hydroxide may be mixed in an amount of 0 to 5.9 moles, preferably 0.01 to 5.9 moles per 1 mole of alumina hydroxide.
- step (b) proceeds to step (b) in the system.
- the precipitant may be or different from the precipitant used when forming the aluminum hydroxide and aluminum phosphate hydroxide, it is preferably added in the form of an aqueous solution thereof to obtain a fine and uniform precipitate, more preferably stirring the precursor aqueous solution In the form of its aqueous solution.
- the precipitant precipitates the alumina-aluminum phosphate mixed hydroxide by adding the precipitant until the pH of the mixed hydroxide mixed with the aluminum hydroxide and the aluminum phosphate hydroxide is 9 to 11.
- the pH of the mixed hydroxide in which the aluminum hydroxide and the aluminum phosphate hydroxide is mixed is less than 9, the hydroxide may have insufficient precipitation, and when the pH exceeds 11, the reactivity may be lowered due to an increase in the base point than necessary.
- the alumina-aluminum phosphate mixed hydroxide thus obtained can be further separated from the solution by using techniques well known in the art. For example, filtration, decantation, evaporation, washing, drying and spray drying can be used. Preferably, it may include one or more of filtration, washing or spray drying, and when coated on a catalyst support or structure, etc., may be applied after washing, application drying, or application coating after the calcination process described below.
- alumina-aluminum phosphate mixed hydroxide was dried and then calcined to prepare a terminal alkylation catalyst of polyalkylene glycol in the form of an alumina-aluminum phosphate composite oxide [step (b)].
- Drying of the alumina-aluminum phosphate mixed hydroxide may be performed at 90 to 150 ° C. for 15 to 30 hours, and after drying, heating is performed at high temperature under an oxidizing atmosphere such as air or oxygen-containing mixed gas.
- Preferred conditions for the calcination can be carried out at 500 ⁇ 700 °C for 5 to 30 hours. If the calcination condition is outside the range, a catalyst form required for alkylating the polyalkylene glycol may not be formed, and thus problems such as lowering of catalytic activity may occur.
- the method for preparing a terminal alkylation catalyst of the polyalkylene glycol according to the present invention can be produced in an eco-friendly and economical manner easily the terminal alkylation catalyst of the polyalkylene glycol.
- the present invention relates to a process for terminal alkylation of a polyalkylene glycol, characterized in that the alkylating agent and the polyalkylene glycol are reacted in the presence of the terminal alkylation catalyst of the polyalkylene glycol described above.
- the polyalkylene glycol that can be applied to the alkylation method according to the present invention may be applied to any compound having a hydroxyl group substituted at the terminal, and examples thereof include polyether polyols, aryl alcohols, and alkylenes. Alkylene oxide adducts and the like.
- dialkyl carbonate for example, may be dimethyl carbonate, diethyl carbonate, ethyl methyl carbonate, dipropyl carbonate, methyl propyl carbonate, etc. , Preferably dimethyl carbonate, diethyl carbonate and the like.
- the alkylating agent described above may be used in 10 to 44 moles per 1 mole of polyalkylene glycol. If the alkylating agent is used at less than 10 moles per 1 mole of polyalkylene glycol, the conversion rate of the polyalkylene glycol is low, and when used in excess of 44 moles, the alkylation of the polyalkylene glycol has a good conversion rate, but is decomposed. The increase in the alkylating agent may cause a problem of low economic efficiency.
- the alkylation reaction of the present invention can be carried out at 120 ⁇ 170 °C at normal pressure ⁇ 3 kgf / cm2. If the pressure is outside the above range, the alkylation reactivity may be lowered due to the high pressure conditions in the reactor, and if the reaction temperature is lower than 120 °C, the alkylation reactivity may be lowered, or more unreacted polyalkylene glycol may occur, 170 When the temperature is exceeded, the polyalkylene glycol which is a reaction raw material may be decomposed during the reaction.
- the alkylation reaction according to the present invention can be carried out in a fixed-bed continuous type.
- an appropriate amount of granular catalyst is charged to the reactor, and the reactant polyalkylene glycol and the alkylating agent are continuously supplied at the same time to continuously pass the catalyst layer adjusted to the desired reaction temperature and pressure.
- Compounds passed through the reactor at the appropriate reaction temperature and pressure are separated / purified, and unreacted polyalkylene glycols and alkylating agents are recycled.
- the alkylation method of the polyalkylene glycol according to the present invention can be alkylated the terminal of the polyalkylene glycol with a high conversion rate of 85% or more by using an environmentally friendly alkylating agent can be useful in various fields such as refrigeration oil for automobile air conditioners .
- alumina-aluminum phosphate hydroxide cake in which the formed alumina-aluminum phosphate hydroxide was precipitated was sufficiently washed with distilled water and isopropyl alcohol, and then filtered using a filter press.
- the filtered alumina-aluminum phosphate hydroxide was dried at 110 ° C. for 24 hours and then calcined at 650 ° C. for 24 hours to prepare an alkylation catalyst of polyalkylene glycol containing 85% by weight of aluminium phosphate.
- XRD X-ray diffraction analysis
- the catalyst prepared in Preparation Example 1 was confirmed to be Aluminum Phosphate and Alumina Mixture.
- the catalyst prepared in Preparation Example 1 was charged to 100 cm 3 in a cylindrical continuous reactor having a diameter of 1 inch, a height of 30 cm, and a volume of 200 cm 3, and the filled catalyst was filled with glass beads on the upper and lower portions of the charged catalyst to the outside. Prevented exit.
- the cylindrical continuous reactor was installed in a cylindrical furnace equipped with a temperature controller, the cylindrical continuous reactor was heated and maintained at 145 ° C., the viscosity (40 ° C.) was 65 cSt, and the weight average molecular weight was 1,300 g.
- the reaction was performed by passing a polyalkylene glycol (PAG P-65, NH Chemical) and dimethyl carbonate (KPX Green) which were / mol through a catalyst bed for 72 hours at the content and rate of the following Table 1. At this time, the product was separated into the final target and unreacted dimethyl carbonate, methanol, carbon dioxide and the like in a separator of 120 °C, 30 torr.
- PAG P-65 polyalkylene glycol
- KPX Green dimethyl carbonate
- the blank measurement was performed by putting a magnetic bar in a 250 ml flask, adding 5 ml of imidazole and 25 ml of 1.95 N phthalic anhydride, sealing well, and stirring gently.
- sample measurement was performed by putting a magnetic bar in a 250 ml flask, 10 g of a sample, and then adding 5 ml of imidazole and 25 ml of 1.95 N phthalic anhydride thereto in the same manner as the blank measuring method, sealing well and stirring gently. .
- the blank measuring flask and the sample measuring flask were simultaneously reacted by heating to 100 ° C. for 50 minutes in an oven. After the reaction was completed, the mixture was cooled to room temperature.
- the blank measuring flask and the sample measuring flask were wiped with 25 ml of pyridine, and then 0.5 ml of 1% phenolphthalein pyridine solution was added and titrated with 0.5 N aqueous NaOH solution until the color changed. The titration of blank and the titration of the sample were measured.
- the hydroxyl value was calculated by the following equation.
- the imidazole was prepared by adding and stirring up to 500 ml of pyridine in 56 g of 99% imidazole in a 500 ml flask, and 1.95 N phthalic anhydride was added to 145 g of phthalic anhydride and pyridine to 1 L in a 1 L flask, followed by stirring. Prepared.
- Methylation rate was calculated by the following formula 3 and shown in Table 1, the saponification value of formula 3 was calculated through the following analysis method.
- the saponification value is as follows.
- a magnetic bar was placed in a 100 ml flask, and 10 g of a sample and 25 ml of 0.5 N KOH aqueous solution were added thereto, and ethanol was added until it became clear while stirring. After refluxing for 30 minutes using a slideax, reflux condenser and stirrer, the mixture was cooled at room temperature. After cooling, 2 drops of 1% phenolphthalein ethanol solution was added thereto, titrated with 0.5 N HCl aqueous solution while stirring, and the saponification value was calculated by the following Equation 4.
- the other reaction condition is that the type of catalyst was changed to Al-MCM41 in the catalyst according to Preparation Example 1 of the present invention, the conversion rate from 94.3% to 75% , The methylation rate is lowered from 85.5% to 63%, and even if the dimethyl carbonate is increased to 400 parts by weight based on 100 parts by weight of polyalkylene glycol under Al-MCM41 catalyst conditions as in Comparative Example 4, the conversion rate is 75.0% The rate increased to 32.5%.
- the reactivity of the present invention is less than 100 parts by weight of dimethyl carbonate with respect to 100 parts by weight of polyalkylene glycol, 75 parts by weight of 100 parts by weight of each of the alkylating agents compared to Comparative Examples 3 and 4 It was confirmed that the high, the catalyst according to the invention was found to be excellent as a catalyst for alkylating the terminal of the PAG.
- Comparative Examples 1 and 2 show reactivity when the molar ratio of DMC / PAG is lowered and when the reaction pressure is increased, respectively. Through the comparative example it was confirmed that there is a molar ratio and the reaction pressure range of the appropriate range of DMC / PAG.
- the present invention relates to alkylation catalysts for alkylating terminal hydroxyl groups of polyalkylene glycols at high conversions and to methods for terminal alkylation of polyalkylene glycols that are environmentally and economically alkylated in the presence of said alkylation catalysts. There is availability.
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Abstract
Description
Claims (17)
- 폴리알킬렌글리콜과 알킬화제를 반응시켜 폴리알킬렌글리콜의 말단을 알킬화하는 촉매로, 알루미나를 함유하는 것을 특징으로 하는 폴리알킬렌 글리콜의 말단 알킬화 촉매.
- 제1항에 있어서,상기 알킬화제는 디알킬카보네이트인 것을 특징으로 하는 폴리알킬렌 글리콜의 말단 알킬화 촉매.
- 제1항에 있어서,상기 폴리알킬렌 글리콜의 알킬화 촉매는 인산알루미늄(Aluminum Phosphate)을 추가로 함유하는 것을 특징으로 하는 폴리알킬렌 글리콜의 말단 알킬화 촉매.
- 제3항에 있어서,상기 알루미나는 촉매 총 중량에 대하여 13 중량% 이상을 함유하는 것을 특징으로 하는 폴리알킬렌 글리콜의 말단 알킬화 촉매.
- 제1항에 있어서,상기 알루미나는 에타-알루미나(eta-alumina) 또는 감마-알루미나(gamma-alumina) 혹은 상기 에타-알루미나와 감마-알루미나의 혼합물인 것을 특징으로 하는 폴리알킬렌 글리콜의 말단 알킬화 촉매.
- (a) 제1 알루미나 전구체 수용액에 침전제를 첨가하여 알루미나 수산화물을 형성시키는 단계; 및(b) 상기 형성된 알루미나 수산화물을 건조시킨 다음, 하소하는 단계를 포함하는, 폴리알킬렌 글리콜의 말단 알킬화 촉매의 제조방법.
- (a-1) 제1 알루미나 전구체 수용액에 침전제를 첨가하여 알루미나 수산화물을 형성시키는 단계;(a-2) 제2 알루미나 전구체 수용액 및 인산염 전구체를 혼합한 다음, 침전제를 첨가하여 인산알루미늄(Aluminum Phosphate) 수산화물을 형성시키는 단계;(a-3) 상기 (a-1) 단계의 알루미나 수산화물 및 상기 (a-2) 단계의 인산알루미늄(Aluminum Phosphate) 수산화물을 혼합한 다음, 상기 혼합 수산화물에 침전제를 첨가하여 알루미나-인산알루미늄(Aluminum Phosphate) 혼합 수산화물을 형성하는 단계; 및(b) 상기 알루미나-인산알루미늄(Aluminum Phosphate) 혼합 수산화물을 건조한 다음, 하소시키는 단계를 포함하는, 폴리알킬렌 글리콜의 말단 알킬화 촉매의 제조방법.
- 제6항 또는 제7항에 있어서,상기 제1 알루미나 전구체 또는 제2 알루미나 전구체는 서로 독립적으로 질산알루미늄, 알루민산나트륨, 알루민산칼륨, 염산알루미늄, 황산알루미늄, 초산알루미늄, 알루미늄알콕사이드 및 트리메틸알루미늄으로 구성된 군에서 선택되는 1종 이상인 것을 특징으로 하는 폴리알킬렌 글리콜의 말단 알킬화 촉매의 제조방법.
- 제6항 또는 제7항에 있어서,상기 각 단계의 침전제는 독립적으로 암모니아수, 수산화나트륨, 수산화암모늄, 탄산나트륨, 탄산칼슘, 탄산암모늄 및 요소로 구성된 군에서 선택되는 1종 이상인 것을 특징으로 하는 폴리알킬렌 글리콜의 말단 알킬화 촉매의 제조방법.
- 제6항 또는 제7항에 있어서,상기 각 단계의 침전제는 전구체 수용액의 pH가 9 ~ 11이 될 때까지 첨가하는 것을 특징으로 하는 폴리알킬렌 글리콜의 말단 알킬화 촉매의 제조방법.
- 제6항 또는 제7항에 있어서,상기 (b) 단계는 90 ~ 150 ℃에서 15 ~ 30시간 동안 건조시키고, 500 ~ 700 ℃에서 5 ~ 30시간 동안 하소시키는 것을 특징으로 하는 폴리알킬렌 글리콜의 말단 알킬화 촉매의 제조방법.
- 제7항에 있어서,상기 인산염 전구체는 인산, 올소인산염, 피로인산염, 폴리인산염, 메타인산염, 울트라 인산염, 디암모늄하이드로포스페이트 및 암모늄디하이드로포스페이트로 구성된 군에서 선택되는 1종 이상인 것을 특징으로 하는 폴리알킬렌글리콜의 말단 알킬화 촉매의 제조방법.
- 제7항에 있어서,상기 (a-2) 단계의 인산염 전구체는 제2 알루미나 전구체 1몰에 대하여, 0.77 ~ 1.53 몰로 혼합하는 것을 특징으로 하는 폴리알킬렌 글리콜의 말단 알킬화 촉매의 제조방법.
- 제7항에 있어서,상기 (a-3) 단계에서 인산알루미늄 수산화물은 알루미나 수산화물 1몰에 대하여, 0 내지 5.9 몰비로 혼합하는 것을 특징으로 하는 폴리알킬렌 글리콜의 말단 알킬화 방법.
- 제1항 내지 제5항 중 어느 한 항의 폴리알킬렌 글리콜의 말단 알킬화 촉매 존재하에서 알킬화제와 폴리알킬렌 글리콜을 120 ~ 170 ℃ 온도, 상압 ~ 3kgf/cm2 압력 하에서 반응시키는 것을 특징으로 하는 폴리알킬렌 글리콜의 말단 알킬화 방법.
- 제15항에 있어서,상기 알킬화제는 디알킬 카보네이트(dialkyl carbonate)인 것을 특징으로 하는 폴리알킬렌 글리콜의 말단 알킬화 방법.
- 제15항에 있어서,상기 알킬화제는 폴리알킬렌 글리콜 1몰에 대하여, 10 ~ 40몰로 반응시키는 것을 특징으로 하는 폴리알킬렌 글리콜의 말단 알킬화 방법.
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US15/315,652 US10427136B2 (en) | 2016-05-25 | 2016-05-25 | Catalyst for alkylation of polyalkylene glycol and alkylation method using the same |
PCT/KR2016/005511 WO2017204378A1 (ko) | 2016-05-25 | 2016-05-25 | 폴리알킬렌 글리콜의 말단 알킬화 촉매 및 이를 이용한 폴리알킬렌 글리콜의 말단 알킬화 방법 |
JP2016576014A JP6484651B2 (ja) | 2016-05-25 | 2016-05-25 | ポリアルキレングリコールの末端アルキル化触媒及びこれを用いたポリアルキレングリコールの末端アルキル化方法 |
CN201680001919.XA CN109153780B (zh) | 2016-05-25 | 2016-05-25 | 聚亚烷基二醇的末端烷化催化剂及利用它的聚亚烷基二醇末端烷化方法 |
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