CN116082630A - Alcoholic hydroxyl group-terminated polyphenyl ether polyol and preparation method thereof - Google Patents

Alcoholic hydroxyl group-terminated polyphenyl ether polyol and preparation method thereof Download PDF

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CN116082630A
CN116082630A CN202211649306.0A CN202211649306A CN116082630A CN 116082630 A CN116082630 A CN 116082630A CN 202211649306 A CN202211649306 A CN 202211649306A CN 116082630 A CN116082630 A CN 116082630A
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alcoholic hydroxyl
reaction
ether polyol
polyphenyl ether
terminated
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王植源
张育林
乔文强
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Dalian University of Technology
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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
    • C08G65/48—Polymers modified by chemical after-treatment
    • C08G65/485—Polyphenylene oxides
    • 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
    • C08G2650/00—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule
    • C08G2650/02—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule characterized by the type of post-polymerisation functionalisation
    • C08G2650/04—End-capping
    • 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
    • C08G2650/00—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule
    • C08G2650/02—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule characterized by the type of post-polymerisation functionalisation
    • C08G2650/10—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule characterized by the type of post-polymerisation functionalisation characterized by the catalyst used in the post-polymerisation functionalisation step

Abstract

The invention provides an alcoholic hydroxyl group-terminated polyphenyl ether polyol and a preparation method thereof. The alcoholic hydroxyl group-terminated polyphenyl ether polyol has adjustable molecular weight and polymerization degree, stable property, can be used for modifying a polymer, can be used as an intermediate for preparing the polymer, can endow the prepared product with some unique characteristics of polyphenyl ether by adding the alcoholic hydroxyl group-terminated polyphenyl ether polyol, improves the hardness, heat resistance and other properties of the prepared polymer, and has the advantages of simple preparation method, high reaction selectivity, high yield, low production cost and good application prospect.

Description

Alcoholic hydroxyl group-terminated polyphenyl ether polyol and preparation method thereof
Technical Field
The invention relates to the field of alcoholic hydroxyl group-terminated polyphenyl ether polyol, in particular to an alcoholic hydroxyl group-terminated polyphenyl ether polyol with different molecular weights, namely different chain lengths and a preparation method thereof.
Background
The polyphenyl ether polyol terminated by alcoholic hydroxyl groups is an etherified polyol of polyphenyl ether and is named as PPOD. The polyol of the polyphenyl ether blocked by the alcoholic hydroxyl groups is white powder, has the properties of high temperature resistance, low expansion coefficient, low dielectric loss and the like of common polyphenyl ether, has high rigidity due to the existence of a large number of benzene ring structures, has the property of polyol due to the fact that the two ends of the polyol are blocked by the alcoholic hydroxyl groups, provides possibility of introducing engineering plastics in the preparation of polyurethane, further endows the polyurethane with the properties of some polyphenyl ethers, and is modified so that the application of the polyphenyl ether is wider. The method can be used for manufacturing corrosion-resistant parts such as automobile tires, valves, pipelines and the like, and also can be applied to the fields of aerospace, automobiles and the like, such as high-temperature-resistant coatings such as spaceflight, rockets and the like, automobile pistons and the like.
At present, a preparation method of the alcoholic hydroxyl group-terminated polyphenyl ether polyol is not explicitly reported. The sand bit company successfully prepared a NORYL AP2001G polyol for cast polyurethane, but there is no specific report. Based on similar phenolic etherification, many reports have been made.
Currently, wang Guxi et al prepared etherified polyols of bisphenol a using bisphenol a as the starting material and dibutyltin oxide as the catalyst; CN110294666a discloses a method for preparing alkylene etherified polyol from bisphenol a and alkylene carbonate, CN110669213a discloses a method for preparing bisphenol a polyether from bisphenol a and propylene oxide, and di-n-butyl ether, ethylene glycol diethyl ether, ethylene glycol n-propyl ether and the like are used as solvents, so that the solvent toxicity is high.
Disclosure of Invention
Based on the technical background, the inventor has made a keen approach, takes double-end hydroxyl polyphenyl ether (namely PPO) as a main raw material, and reacts with alkylene carbonate or epoxide in the presence of an alkaline catalyst to prepare alcoholic hydroxyl terminated polyphenyl ether polyol, wherein the alcoholic hydroxyl terminated polyphenyl ether polyol has alcoholic hydroxyl groups at two ends, has adjustable molecular weight and polymerization degree and stable property, can be used for modifying polymers and can be used as an intermediate for preparing the polymers, and the addition of the alcoholic hydroxyl terminated polyphenyl ether polyol can endow the prepared product with some performances of polyphenyl ether, so that the hardness, heat resistance and the like of the product are effectively improved.
The first aspect of the present invention is to provide an alcoholic hydroxyl group-capped polyphenylene ether polyol represented by the following formula (1):
Figure BDA0004011244820000021
in the formula (1), the value of x+y is 10-100, the value of m+n is 1-1000, and R is selected from one of hydrogen, alkyl and cycloalkyl.
In a second aspect, the present invention provides a process for preparing the alcoholic hydroxyl-terminated polyphenylene ether polyol of the first aspect of the present invention, comprising the steps of:
step 1, in the presence of an alkaline catalyst, reacting double-end hydroxyl polyphenyl ether and alkylene carbonate or epoxide in a solvent to obtain a reaction mixture;
and 2, precipitating, washing, filtering and drying the reaction mixture to obtain the alcoholic hydroxyl group-terminated polyphenyl ether polyol.
In a third aspect, the present invention provides the use of the alcoholic hydroxyl group-capped polyphenylene ether polyol according to the first aspect of the present invention or the alcoholic hydroxyl group-capped polyphenylene ether polyol produced by the production method according to the second aspect of the present invention, which is useful for modifying a polymer or as an intermediate for producing a polymer. Preferably for modifying polyurethanes and polystyrenes as intermediates for the preparation of polyesters and epoxy resins.
Drawings
FIG. 1 shows the preparation of an alcoholic hydroxyl group-terminated polyphenylene ether polyol of example 1 1 HNMR (400 MHz, solvent deuterated chloroform) profile;
FIG. 2 shows the preparation of alcoholic hydroxyl group-terminated polyphenylene ether polyol of example 12 1 HNMR (400 MHz, solvent deuterated chloroform) profile;
FIG. 3 shows the esterified polyol of the polyphenylene ether terminated with alcoholic hydroxyl group obtained in example 1 1 H NMR (400 MHz, solvent deuterated chloroform) profile;
FIG. 4 shows FT-IR contrast graphs of a double-end hydroxyl polyphenylene ether PPO (SA 90), an alcoholic hydroxyl group-terminated polyphenylene ether polyol PPOD obtained in example 1, and a sample MPPOPD obtained by esterification in experimental example 1.
Detailed Description
The features and advantages of the present invention will become more apparent and evident from the following detailed description of the invention.
The first aspect of the present invention is to provide an alcoholic hydroxyl group-capped polyphenylene ether polyol represented by the following formula (1):
Figure BDA0004011244820000031
in the formula (1), the value of x+y is 10-100, the value of m+n is 1-1000, and R is selected from one of hydrogen, alkyl and cycloalkyl.
Preferably, the value of x+y is 10 to 50, the value of m+n is 1 to 500, and R is selected from one of hydrogen and alkyl.
More preferably, x+y has a value of 10 to 20, m+n has a value of 1 to 100, and R is selected from hydrogen or methyl.
The etherified groups at two ends of the polyphenyl ether polyol with the end capped by the alcoholic hydroxyl groups have different polymerization degrees and stable properties, can be used for modifying polymers such as polyurethane, polystyrene and the like, can be used as an intermediate for preparing polymers such as polyester, epoxy resin and the like, and endows the prepared products with some unique properties of polyphenyl ether.
The alcoholic hydroxyl group-terminated polyphenyl ether polyol is prepared by taking double-end hydroxyl polyphenyl ether (namely PPO) as a raw material and reacting with alkylene carbonate or epoxide in the presence of an alkaline catalyst.
The double-end hydroxyl polyphenyl ether is shown as the following formula:
Figure BDA0004011244820000041
wherein x+y has a value of 10 to 100, preferably x+y has a value of 10 to 50, more preferably x+y has a value of 10 to 20.
According to the invention, the alkylene carbonate is selected from one or more of Ethylene Carbonate (EC), propylene Carbonate (PC) and Butylene Carbonate (BC), preferably one or two of ethylene carbonate and propylene carbonate.
The epoxide is selected from one or more of Ethylene Oxide (EO), propylene Oxide (PO) and Butylene Oxide (BO), preferably one or two of ethylene oxide and propylene oxide.
The molar ratio of the alkylene carbonate to the double-end hydroxyl polyphenyl ether is (1-1000): 1, preferably (1-500): 1, more preferably (2-100): 1.
The molar ratio of epoxide to double-end hydroxyl polyphenyl ether is (1-1000): 1, preferably (1-500): 1, more preferably (2-200): 1.
The alkaline catalyst is selected from one or more of organic alkali, alkali metal hydride, alkali metal hydroxide, alkali metal carbonate compound and alkali metal bicarbonate compound, preferably one or more of alkali metal carbonate, alkali metal bicarbonate and alkali metal hydride, more preferably one or more of potassium carbonate, potassium bicarbonate and sodium hydride.
For alkyl vinyl esters and epoxides, anionic ring-opening polymerization processes are commonly employed in the industry. The method adopts cationic ring-opening polymerization, has more side reactions, and the generated product has low relative molecular mass, for example, when protonic acid is adopted, the product can not be obtained due to the limitation of the affinity of anions of the acid, so the alkaline catalyst is selected to be used.
The molar ratio of the alkaline catalyst to the double-end hydroxyl polyphenyl ether is (0.5-100): 1, preferably (0.5 to 80): 1, more preferably (1 to 50): 1.
The polyphenyl ether polyol capped by the alcoholic hydroxyl group can be used for modifying high molecular compounds such as polyurethane, polystyrene and the like, so that the hardness, glass transition temperature and other performances of the polymer are effectively improved, and the performances of the modified polymer are continuously improved along with the increase of the addition amount of the polyphenyl ether polyol capped by the alcoholic hydroxyl group.
The polyurethane is modified by adopting the polyphenyl ether polyol with the end capped by the alcoholic hydroxyl groups, so that the hardness of the polyurethane can be improved to more than 85A, and the glass transition temperature can be improved to more than 72 ℃.
The modified polystyrene has dielectric constant lower than 2.34 at 10GHz and glass transition temperature higher than 129 deg.c.
In a second aspect, the present invention provides a process for preparing the alcoholic hydroxyl-terminated polyphenylene ether polyol of the first aspect of the present invention, comprising the steps of:
step 1, in the presence of an alkaline catalyst, reacting double-end hydroxyl polyphenyl ether and alkylene carbonate or epoxide in a solvent to obtain a reaction mixture;
and 2, precipitating, washing, filtering and drying the reaction mixture to obtain the alcoholic hydroxyl group-terminated polyphenyl ether polyol.
This step is specifically described and illustrated below.
Step 1, in the presence of an alkaline catalyst, reacting double-end hydroxyl polyphenyl ether and alkylene carbonate or epoxide in a solvent to obtain a reaction mixture.
The alkaline catalyst is selected from one or more of organic alkali, alkali metal hydride, alkali metal hydroxide, alkali metal carbonate compound and alkali metal bicarbonate compound, preferably one or more of alkali metal carbonate, alkali metal bicarbonate and alkali metal hydride, more preferably one or more of potassium carbonate, potassium bicarbonate and sodium hydride.
The solvent is an organic solvent, preferably one or more selected from benzene, toluene, xylene, dichloromethane, chloroform, tetrahydrofuran and N, N-dimethylformamide, preferably one or two selected from N, N-dimethylformamide and tetrahydrofuran.
The amount of the solvent to be added in the present invention is not particularly limited as long as the double-ended hydroxyl polyphenylene ether and alkylene carbonate or epoxide and the basic catalyst can be completely dissolved.
If the reaction raw materials are double-end hydroxyl polyphenyl ether and alkyl carbonate, placing the double-end hydroxyl polyphenyl ether, alkyl carbonate and an alkaline catalyst in a solvent, and carrying out reflux reaction under mechanical stirring.
The alkylene carbonate is selected from one or more of Ethylene Carbonate (EC), propylene Carbonate (PC) and Butylene Carbonate (BC), preferably one or two of ethylene carbonate and propylene carbonate.
The molar ratio of the alkylene carbonate to the double-end hydroxyl polyphenyl ether is (1-1000): 1, preferably (1-500): 1, more preferably (2-100): 1.
The molar ratio of the alkaline catalyst to the double-end hydroxyl polyphenyl ether is (0.5-100): 1, preferably (0.5 to 80): 1, more preferably (1 to 50): 1.
The reaction temperature is 50 to 200 ℃, preferably 70 to 180 ℃, more preferably 90 to 150 ℃.
The reaction time is 1 to 100 hours, preferably 2 to 70 hours, more preferably 2 to 50 hours.
If the reaction raw materials are double-end polyphenyl ether and epoxide, the method comprises the following steps:
step 1-1, adding double-end polyphenyl ether and an alkaline catalyst into a solvent for reflux reaction;
step 1-2, cooling after the reaction is finished, adding epoxide into the cooled system, and heating for reflux reaction;
optionally, adding an alkaline catalyst after the reaction in the step 1-3, carrying out reflux reaction, cooling after the reaction is finished, adding epoxide, and heating to carry out reflux reaction.
Specifically, in step 1-1, the molar ratio of the basic catalyst to the double-end-group polyphenyl ether is (0.5 to 20): 1, preferably (0.5 to 10): 1, more preferably (1 to 5): 1.
the reaction temperature is 30 to 90 ℃, preferably 50 to 80 ℃, more preferably 50 to 70 ℃.
The reaction time is 1 to 10 hours, preferably 2 to 8 hours, more preferably 2 to 5 hours.
In step 1-2, the mixture is cooled under ice-water bath conditions to a temperature of 0 to 10 ℃, preferably 0 to 5 ℃.
Because the boiling point of the epoxidation alkane is low, for example, the epoxy ethane is gas at room temperature, and the epoxy ethane is added after being cooled to low temperature, not only can the accurate metering addition amount be realized, but also the operation difficulty can be reduced, and meanwhile, the excessive pressure of a reaction system is prevented.
The epoxide is selected from one or more of Ethylene Oxide (EO), propylene Oxide (PO) and Butylene Oxide (BO), preferably one or two of ethylene oxide and propylene oxide.
The molar ratio of epoxide to double-end hydroxyl polyphenyl ether is (1-200): 1, preferably (1-150): 1, more preferably (2-100): 1.
The temperature is raised to 30 to 90 ℃, preferably 50 to 80 ℃, more preferably 50 to 70 ℃ for reflux reaction.
The reaction time is 1 to 10 hours, preferably 2 to 8 hours, more preferably 2 to 5 hours.
In step 1-3, step 1-3 may be repeated a plurality of times to increase the molecular weight and the degree of polymerization of the alcoholic hydroxyl group-terminated polyphenylene ether polyol. If the catalyst is added once, the polymerization degree can not be improved under the same condition, the value of m+n is up to 4, and multiple additional reactions are selected, so that the improvement of the polymerization degree of the product is facilitated.
The cooling temperature and the reflux reaction temperature are the same as those in step 1-1 and step 1-2.
The mole ratio of the added alkaline catalyst to the double-end hydroxyl polyphenyl ether is (0.5-20): 1, preferably (0.5 to 10): 1, more preferably (1 to 5): 1.
the molar ratio of the epoxide to the double-end hydroxyl polyphenyl ether to be added is (1-200): 1, preferably (1-150): 1, more preferably (2-100): 1.
And 2, precipitating, washing, filtering and drying the reaction mixture to obtain the alcoholic hydroxyl group-terminated polyphenyl ether polyol.
After stopping the reaction, a precipitating agent selected from methanol, n-hexane, preferably methanol, is added to the supernatant of the reaction mixture for precipitation.
Washing is performed by adding a detergent to the precipitate, wherein the detergent is one or more of water, methanol and n-hexane, and preferably methanol.
The washing and filtering steps are repeated for a plurality of times, preferably 2 to 3 times until no reaction solvent exists in the product, and finally vacuum drying is carried out.
The drying temperature is 60 to 90 ℃, preferably 70 to 80 ℃. The drying time is 15 to 30 hours, preferably 20 to 25 hours.
The preparation method has high yield which is up to more than 85%.
In a third aspect, the present invention provides the use of the alcoholic hydroxyl group-capped polyphenylene ether polyol according to the first aspect of the present invention or the alcoholic hydroxyl group-capped polyphenylene ether polyol produced by the production method according to the second aspect of the present invention, which is useful for modifying a polymer or as an intermediate for producing a polymer. Preferably for modifying polyurethanes and polystyrenes as intermediates for the preparation of polyesters and epoxy resins.
The invention has the beneficial effects that:
(1) The preparation method has the advantages of few reaction steps, simple process flow and the like, and reduces the production cost;
(2) The catalyst adopted by the invention has wide sources, can be removed through filtration, has simple removal method, and has higher reaction selectivity and high yield which can reach more than 85 percent;
(3) The molecular weight and the polymerization degree of etherified groups at two ends of the polyphenyl ether polyol with the end capped by the alcoholic hydroxyl groups prepared by the method are adjustable, and the adjustment can be carried out according to specific requirements;
(4) The polyphenyl ether polyol with the end capped by the alcoholic hydroxyl group has stable property, can be used for modifying polymers such as polyurethane, polystyrene and the like, can improve the hardness of the polyurethane modified by the polyphenyl ether polyol to above 85A, can improve the glass transition temperature to above 72 ℃, can be used as an intermediate for preparing polymers such as polyester, epoxy resin and the like, and can endow the prepared product with some unique characteristics such as high temperature resistance, low dielectric loss, high rigidity and the like for the polyphenyl ether by adding the polyphenyl ether polyol with the end capped by the alcoholic hydroxyl group, so that the polyphenyl ether polyol can be applied to the fields such as aerospace, medical appliances, coatings, automobiles and the like.
Examples
The invention is further illustrated by the following specific examples, which are intended to be illustrative of the invention and are not intended to limit the scope of the invention.
Example 1
5.00g (3.13 mmol) of double-ended hydroxy polyphenylene ether (PPO, molecular weight 1600, available from Saint Foundation Ind. Co., ltd., model NorylSA90, x+y=10), 0.55g (6.25 mmol) of Ethylene Carbonate (EC) and 0.44g (3.13 mmol) of K are placed in a three-necked round-bottomed flask equipped with a reflux condenser 2 CO 3 Added to 25mL of N, N-Dimethylformamide (DMF), and the reaction was stopped by stirring at 145℃under reflux for 3h.
The supernatant of the reaction mixture was dropped into absolute methanol to precipitate, and the resulting off-white precipitate was further obtained by suction filtration and the cake was washed with absolute methanol. Repeating the vacuum filtration step, and washing with absolute methanol for 2-3 times until no reaction solvent exists in the product. Finally, the product was dried in a vacuum oven at 80 ℃ for 24h. The alcoholic hydroxyl-terminated polyphenylene ether polyol was obtained as an off-white solid powder in 94% yield.
The chemical reaction process is presumed to be shown as a formula (2), wherein R' is EC, which 1 The H NMR spectrum is shown in FIG. 1, m+n=2, the infrared spectrum is shown in FIG. 4, and the infrared characteristic peak is 3450cm -1 O-H is provided, which indicates that the prepared product has alcoholic hydroxyl.
Figure BDA0004011244820000101
Example 2
The preparation of the alcoholic hydroxyl-terminated polyphenylene ether polyol was conducted in a similar manner to example 1 except that: the amount of ethylene carbonate added was 2.06g and the reaction time was 4 hours.
Nuclear magnetic hydrogen spectrum characterizes m+n=4.
Example 3
The preparation of the alcoholic hydroxyl-terminated polyphenylene ether polyol was conducted in a similar manner to example 1 except that: the catalyst is KHCO 3 The addition amount was 0.45g.
Nuclear magnetic hydrogen spectrum characterizes m+n=2.
Example 4
5.00g (3.13 mmol) of PPO (molecular weight 1600, available from Saint Foundation Ind. Co., ltd., model NorylSA90, x+y=10), 0.64g (6.25 mmol) of Propylene Carbonate (PC) and 0.50g (3.62 mmol) of K are placed in a three-necked round-bottomed flask equipped with a reflux condenser 2 CO 3 Added to 25mL of DMF and stirred at 145℃for 3h at reflux, the reaction was stopped.
The supernatant of the reaction mixture was dropped into absolute methanol to precipitate, and the resulting off-white precipitate was further obtained by suction filtration and the cake was washed with absolute methanol. Repeating the vacuum filtration step, and washing with absolute methanol for 2-3 times until no reaction solvent exists in the product. Finally, the product was dried in a vacuum oven at 80 ℃ for 24h. The alcoholic hydroxyl group-capped polyphenylene ether diol was obtained as an off-white solid powder in 91% yield.
The chemical reaction process is presumed to be shown as a formula (2), wherein R' is PC, the nuclear magnetic resonance spectrum represents m+n=2, and the infrared characteristic peak is 3450cm -1 。
Example 5
The preparation of the alcoholic hydroxyl-terminated polyphenylene ether polyol was conducted in a similar manner to example 4 except that: the propylene carbonate was added in an amount of 4.08g and the reaction time was 4 hours.
Nuclear magnetic hydrogen spectrum characterizes m+n=4.
Example 6
5.00g (3.13 mmol) of PPO (molecular weight 1600, available from Saint Foundation Ind. Co., ltd., model NorylSA90, x+y=10) and 0.44g (3.13 mmol) of K are placed in a three-necked round-bottomed flask equipped with a reflux condenser 2 CO 3 Added to 25mL of anhydrous Tetrahydrofuran (THF), and the mixture was refluxed at 60℃for 3 hours with stirring, and the reaction was stopped and cooled to 0 to 5 ℃. Thereafter, 1.00g (22.73 mol) of Ethylene Oxide (EO) was introduced into the reaction mixture at 0℃and the reaction was stopped by stirring and refluxing at 60℃for 3 hours.
The supernatant was added dropwise to anhydrous methanol for precipitation, and the resulting off-white precipitate was further obtained by suction filtration and the filter cake was washed with anhydrous methanol. Repeating the vacuum filtration step, and washing with absolute methanol for 2-3 times until no reaction solvent exists in the product. Finally, the product was dried in a vacuum oven at 80 ℃ for 24h. The alcoholic hydroxyl group-capped polyphenylene ether polyol was obtained as an off-white solid powder in a yield of 90%.
The chemical reaction process is presumed to be shown as a formula (2), wherein R' is EO, the nuclear magnetic resonance spectrum shows that m+n=2, and the infrared characteristic peak is 3450cm -1 。
Example 7
The preparation of the alcoholic hydroxyl-terminated polyphenylene ether polyol was conducted in a similar manner to example 6 except that: the amount of ethylene oxide added was 1.5g.
Nuclear magnetic hydrogen spectrum characterizes m+n=4.
Example 8
5.00g (3.13 mmol) of PPO (molecular weight 1600, available from Saint Foundation Ind. Co., ltd., model NorylSA90, x+y=10) and 0.44g (3.13 mmol) of K are placed in a three-necked round-bottomed flask equipped with a reflux condenser 2 CO 3 Added to 25mL of anhydrous THF, and the reaction was refluxed with stirring at 60℃for 3 hours, stopped, and cooled to 0 to 5 ℃. Then, 1.32g (22.73 mol) of Propylene Oxide (PO) was added to the reaction mixture at 0℃and the reaction was stopped by stirring and refluxing at 60℃for 3 hours.
The supernatant was added dropwise to anhydrous methanol for precipitation, and the resulting off-white precipitate was further obtained by suction filtration and the filter cake was washed with anhydrous methanol. Repeating the vacuum filtration step, and washing with absolute methanol for 2-3 times until no reaction solvent exists in the product. Finally, the product was dried in a vacuum oven at 80 ℃ for 24h. The alcoholic hydroxyl-terminated polyphenylene ether polyol was obtained as an off-white solid powder in 88% yield.
The chemical reaction process is presumed to be shown as a formula (2), wherein R' is PO, the nuclear magnetic resonance spectrum represents m+n=2, and the infrared characteristic peak is 3450cm -1 。
Example 9
The preparation of the alcoholic hydroxyl-terminated polyphenylene ether polyol was conducted in a similar manner to example 8 except that: the amount of propylene oxide added was 2.01g.
Nuclear magnetic hydrogen spectrum characterizes m+n=4.
Example 10
In a three-necked round-bottomed flask equipped with a reflux condenser, 5.00g (3.13 mmol) of PPO (molecular weight 1600, available from sand basic industries, ltd., china) model NorylSA90, x+y=10) and 0.15g (6.25 mmol) of NaH were added to 25mL of anhydrous THF, and the reflux reaction was stirred at 60 ℃ for 3h, stopped and cooled to 0 to 5 ℃. Thereafter, 1.50g (45.46 mol) of EO was introduced into the reaction mixture at 0℃and the mixture was stirred at 60℃for 3 hours under reflux.
After stopping the reaction, the reaction was stopped by adding 0.15g (6.25 mmol) of NaH again without isolation, reacting at 60℃for 3 hours, adding 1.50g (45.46 mol) of EO again under ice bath conditions, and refluxing with stirring at 60℃for 3 hours. The supernatant was added dropwise to anhydrous methanol for precipitation, and the resulting off-white precipitate was further obtained by suction filtration and the filter cake was washed with anhydrous methanol. Repeating the vacuum filtration step, and washing with absolute methanol for 2-3 times until no reaction solvent exists in the product. Finally, the product was dried in a vacuum oven at 80 ℃ for 24h. The alcoholic hydroxyl group-capped polyphenylene ether polyol was obtained as an off-white solid powder in a yield of 90%.
The chemical reaction process is presumed to be shown as a formula (2), wherein R' is EO, the nuclear magnetic resonance spectrum shows that m+n=8, and the infrared characteristic peak is 3450cm -1 。
Example 11
The preparation of the alcoholic hydroxyl-terminated polyphenylene ether polyol was conducted in a similar manner to example 10 except that: naH was fed twice, 0.15g each time, EO was fed twice, 1.5g each time, the total reaction time was 18h, and the yield was 89%.
Nuclear magnetic hydrogen spectrum characterizes m+n=12.
Example 12
The preparation of the alcoholic hydroxyl-terminated polyphenylene ether polyol was conducted in a similar manner to example 10 except that: naH was fed twice, 0.15g each time, three EO feeds, 1.5g each time, and the total reaction time was 24h with a yield of 91%.
Nuclear magnetic hydrogen spectrum characterizes m+n=16.
Example 13
The preparation of the alcoholic hydroxyl-terminated polyphenylene ether polyol was conducted in a similar manner to example 10 except that: five times of NaH and 0.15g and seven times of EO are added, and 1.5g are added, the total reaction time is 36h, and the yield is 87%.
Nuclear magnetic hydrogen spectrum characterizes m+n=30.
Example 14
The preparation of the alcoholic hydroxyl-terminated polyphenylene ether polyol was conducted in a similar manner to example 10 except that: seven times of NaH and each time of 0.15g and ten times of EO are added, each time of 1.5g are added, the total reaction time is 48h, and the yield is 86%.
Nuclear magnetic hydrogen spectrum characterizes m+n=40.
Example 15
The preparation of the alcoholic hydroxyl-terminated polyphenylene ether polyol was conducted in a similar manner to example 10 except that: EO was replaced with PO in an amount of 2.00g and yield 92%.
Nuclear magnetic hydrogen spectrum characterizes m+n=8.
Example 16
The preparation of the alcoholic hydroxyl-terminated polyphenylene ether polyol was conducted in a similar manner to example 11 except that: EO was replaced with PO, 2.00g each time with 88% yield.
Magnetic hydrogen spectrum characterizes m+n=12.
Example 17
The preparation of the alcoholic hydroxyl-terminated polyphenylene ether polyol was conducted in a similar manner to example 12 except that: EO was replaced with PO, 2.00g each time with 88% yield.
Nuclear magnetic hydrogen spectrum characterizes m+n=16.
Example 18
The preparation of the alcoholic hydroxyl-terminated polyphenylene ether polyol was conducted in a similar manner to example 13 except that: EO was replaced with PO, 2.00g each time with 85% yield.
Nuclear magnetic hydrogen spectrum characterizes m+n=30.
Example 19
The preparation of the alcoholic hydroxyl-terminated polyphenylene ether polyol was conducted in a similar manner to example 14 except that: EO was replaced with PO, 2.00g each time with 87% yield.
Nuclear magnetic hydrogen spectrum characterizes m+n=40.
Experimental example
Experimental example 1
Due to the products obtained in example 1 1 No characteristic peak of the alcoholic hydroxyl group is observed in the H NMR spectrum, so that the structural correctness of the structure is verified by further adopting the esterification reaction of methacrylic anhydride and alcoholic hydroxyl group-terminated polyphenyl ether dihydric alcohol. The preparation process comprises the following steps:
in a three-necked round-bottomed flask equipped with a reflux condenser, 1.00g (0.6 mmol) of the alcoholic hydroxyl group-capped polyphenylene ether diol prepared in example 1 and 0.28g (1.70 mmol) of methacrylic anhydride were added to 20mL of toluene, and 0.2531g (25 wt%) of DMAP (4-dimethylaminopyridine) was added as a catalyst, and reacted at 70℃under reflux for 10 hours. After the reaction is finished, the supernatant is dripped into methanol for precipitation, suction filtration is carried out, the filter cake is washed by methanol, the product is finally dried in a vacuum oven at 80 ℃, the esterified product is off-white solid powder, the yield is 97%, and the chemical reaction process is supposed to be shown as a formula (3). The infrared spectrum of the product is shown in FIG. 4, and it can be seen from FIG. 4 that 3450cm of the infrared spectrum of the product is obtained after esterification -1 The characteristic peak at the position disappeared, indicating that the-OH disappeared after esterification.
Figure BDA0004011244820000161
After esterification, the product MPPOD is obtained 1 The H NMR chart is shown in FIG. 3, which shows that the product of example 1 has alcoholic hydroxyl groups at both ends of the polymer, and further shows that the structural formula of the product of example 1 is shown in formula (1).
The invention has been described in detail in connection with the specific embodiments and exemplary examples thereof, but such description is not to be construed as limiting the invention. It will be understood by those skilled in the art that various equivalent substitutions, modifications or improvements may be made to the technical solution of the present invention and its embodiments without departing from the spirit and scope of the present invention, and these fall within the scope of the present invention. The scope of the invention is defined by the appended claims.

Claims (10)

1. An alcoholic hydroxyl group-terminated polyphenylene ether polyol represented by the following formula (1):
Figure FDA0004011244810000011
in the formula (1), the value of x+y is 10-100, the value of m+n is 1-1000, and R is selected from one of hydrogen, alkyl and cycloalkyl.
2. The alcoholic hydroxyl-terminated polyphenylene ether polyol according to claim 1, wherein,
in the formula (1), the value of x+y is 10-50, the value of m+n is 1-500, and R is selected from one of hydrogen and alkyl.
3. An alcoholic hydroxyl group-terminated polyphenylene ether polyol characterized in that,
the alcoholic hydroxyl group-terminated polyphenyl ether polyol is prepared by taking double-end hydroxyl polyphenyl ether as a raw material and reacting with alkylene carbonate or epoxide in the presence of an alkaline catalyst.
4. The alcoholic hydroxyl-terminated polyphenylene ether polyol according to claim 3, wherein,
the alkylene carbonate is selected from one or more of Ethylene Carbonate (EC), propylene Carbonate (PC) and Butylene Carbonate (BC);
the epoxide is selected from one or more of Ethylene Oxide (EO), propylene Oxide (PO) and Butylene Oxide (BO).
5. The alcoholic hydroxyl-terminated polyphenylene ether polyol according to claim 3, wherein,
the alkaline catalyst is selected from one or more of organic alkali, alkali metal hydride, alkali metal hydroxide, alkali metal carbonate compound and alkali metal bicarbonate compound.
6. A process for preparing an alcoholic hydroxyl group-terminated polyphenylene ether polyol, characterized by comprising the steps of:
step 1, in the presence of an alkaline catalyst, reacting double-end hydroxyl polyphenyl ether and alkylene carbonate or epoxide in a solvent to obtain a reaction mixture;
and 2, precipitating, washing, filtering and drying the reaction mixture to obtain the alcoholic hydroxyl group-terminated polyphenyl ether polyol.
7. The method according to claim 6, wherein in step 1,
if the reaction raw materials are double-end hydroxyl polyphenyl ether and alkyl carbonate, placing the double-end hydroxyl polyphenyl ether, alkyl carbonate and alkaline catalyst in a solvent, and carrying out reflux reaction under mechanical stirring.
8. The method according to claim 6, wherein in step 1,
if the reaction raw materials are double-end polyphenyl ether and epoxide, the method comprises the following steps:
step 1-1, adding double-end polyphenyl ether and an alkaline catalyst into a solvent for reflux reaction;
step 1-2, cooling after the reaction is finished, adding epoxide into the cooled system, and heating for reflux reaction;
optionally, adding an alkaline catalyst after the reaction in the step 1-3, carrying out reflux reaction, cooling after the reaction is finished, adding epoxide, and heating to carry out reflux reaction.
9. The preparation method according to claim 8, wherein in the step 1-1, the reaction temperature is 30-90 ℃ and the reaction time is 1-10 hours;
in the step 1-2, cooling to 0-10 ℃, and heating to 30-90 ℃ for reflux reaction.
10. Use of the alcoholic hydroxyl-terminated polyphenylene ether polyol according to one of claims 1 to 5 or the alcoholic hydroxyl-terminated polyphenylene ether polyol produced by the method according to one of claims 6 to 9 for modifying polymers or as an intermediate for producing polymers.
CN202211649306.0A 2022-12-21 2022-12-21 Alcoholic hydroxyl group-terminated polyphenyl ether polyol and preparation method thereof Pending CN116082630A (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4743661A (en) * 1984-12-04 1988-05-10 Basf Aktiengesellschaft Poly (phenylene ethers) and their preparation
US5128421A (en) * 1990-02-28 1992-07-07 Mitsubishi Petrochemical Co., Ltd. Method for preparing hydroxyalkyl-functionalized polyphenylene ether with epoxy compound reactant
CN110294666A (en) * 2018-03-22 2019-10-01 力裕化工股份有限公司 The preparation method and the double alkane alkene of bisphenol-A as made from it of the double alkane alkene etherificate polyalcohols of bisphenol-A are etherified polyalcohol

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4743661A (en) * 1984-12-04 1988-05-10 Basf Aktiengesellschaft Poly (phenylene ethers) and their preparation
US5128421A (en) * 1990-02-28 1992-07-07 Mitsubishi Petrochemical Co., Ltd. Method for preparing hydroxyalkyl-functionalized polyphenylene ether with epoxy compound reactant
CN110294666A (en) * 2018-03-22 2019-10-01 力裕化工股份有限公司 The preparation method and the double alkane alkene of bisphenol-A as made from it of the double alkane alkene etherificate polyalcohols of bisphenol-A are etherified polyalcohol

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