CN109836575A - A kind of preparation process of the methacrylate functionalized polyphenylene oxide of thermosetting property - Google Patents
A kind of preparation process of the methacrylate functionalized polyphenylene oxide of thermosetting property Download PDFInfo
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Abstract
The present invention relates to a kind of preparation process of the methacrylate functionalized polyphenylene oxide of thermosetting property, the methacrylate functionalized polyphenylene oxide of thermosetting property carries out intermolecular dehydration esterification reaction with methacrylic anhydride by both-end hydroxyl polyphenylene oxide under the action of catalyst and forms；Wherein, allyl active group is contained in both-end hydroxyl polyphenylene oxide.The methacrylate functionalized polyphenylene oxide of preparation process preparation prepared by the present invention, the crosslink density of resin further increases, solvent resistance is much higher than the methacrylate functionalized polyphenylene oxide of prior art preparation, can be preferably applied for high-frequency high-speed electronic field；The methacrylate functionalized polyphenylene oxide of preparation process preparation prepared by the present invention, molecular weight is low, and molecular weight control is stablized, and even molecular weight distribution is high-frequency high-speed use for electronic products desired matrix resin.
Description
Technical field
The invention belongs to high-molecular compound synthesis technical fields, and in particular to a kind of thermosetting property methacrylate function
Change the preparation process of polyphenylene oxide.
Background technique
Polyphenylene oxide resin is to be formed by 2,6- xylenol through oxidative coupling polycondensation reaction, is a kind of excellent combination property
Thermoplastic engineering plastic.Its molecular structure is as follows:
It not only has excellent mechanical property, and there are also excellent dielectric properties (dielectric constant Dk=2.45<1MHZ>, damage
Consume factor D f=0.0007<1MHz>), high glass transition temperature (tg=210 DEG C), with very low water imbibition, (saturation is inhaled at room temperature
Water rate is less than 0.05%), this is for high frequency field using particularly significant.
Polyphenylene oxide resin is known as PPO in the U.S., is known as PPE in Japan, molecular weight number-average molecular weight is generally 30000-
50000, it is used mainly as engineering plastics.
Although polyphenylene oxide has many excellent properties outstanding, due to its thermoplasticity, when being used as printed circuit substrate
When have the shortcomings that it is following fatal: (1) heat resistance is inadequate.PCB substrate action material needs high heat resistance；Because welding
When connecing, PCB substrate is necessarily exposed under high temperature, since the glass transition temperature of polyphenylene oxide is slightly below soldering dip temperature (260 DEG C), by one
As the obtained substrate of polyphenylene oxide greater than about 200 DEG C at a temperature of can deform, cause mechanical properties decrease therefrom, and
Peel off substrate surface circuit copper foil, drilling processing is difficult.(2) the resistance to aromatic hydrocarbon of thermoplastic polyphenylene ethers and halogenated hydrocarbons equal solvent performance
Difference, and can dissolve wherein, and in PCB process, it is cleaned with aromatic hydrocarbon and halogenated hydrocarbons equal solvent, this problem
Just seem critically important.
Therefore thermoplastic polyphenylene ethers are made perfectly to be applied to high-frequency high-speed electronic field, it is necessary to by thermoplastic polyphenylene ethers
Resin carries out thermosetting property modification, and industry generally tends to carry out using 2,6- xylenol and bisphenol compound single
Body copolymerization method, first synthesis both-end hydroxyl polyphenylene oxide resin；And then it prepares and a series of meet high-frequency high-speed electronic field application and want
The modified polyphenylene ether resin asked.
It is living in the polyphenylene oxide resin structure that exists but due to the preparation process of existing both-end hydroxyl polyphenylene oxide resin
Property the few problem of group so that the thermosetting polyphenylene ether that further synthesizes of both-end hydroxyl polyphenylene oxide resin prepared by prior art
Resin has following defects that solidification crosslink density is lower, cannot show the Thermocurable energy of resin well, be applied to high frequency
When high-velocity electrons field, show resin solvent resistance it is unsatisfactory the problems such as.
Summary of the invention
In order to solve the above-mentioned problems in the prior art, the present invention provides a kind of thermosetting property methacrylate officials
The preparation process of polyphenylene oxide can be changed.The technical problem to be solved in the present invention is achieved through the following technical solutions:
A kind of preparation process of the methacrylate functionalized polyphenylene oxide of thermosetting property, it is described methacrylate functionalized poly-
Phenylate carries out intermolecular dehydration esterification reaction with methacrylic anhydride by both-end hydroxyl polyphenylene oxide under the action of catalyst and forms；Its
In, allyl active group is contained in the both-end hydroxyl polyphenylene oxide.
Further, the preparation process the following steps are included:
Organic solvent and both-end hydroxyl polyphenylene oxide are added into reaction vessel for step 1, are heated to 35-45 DEG C, stir molten
Solution, obtains both-end hydroxyl polyphenylene oxide lysate；
Catalyst and methacrylic anhydride is added in step 2 in the both-end hydroxyl polyphenylene oxide lysate, forms reaction
System；
The temperature of the reaction system is risen to 70-90 DEG C, reacted 4-6 hours by step 3；
Solution after reaction is washed with water to neutrality by step 4；
Methacrylate functionalized polyphenylene oxide resin is settled out by step 5 by the solution after washing in precipitating reagent
Come；
The methacrylate functionalized polyphenylene oxide resin vacuum filter is dried to obtain the methyl-prop by step 6
Olefin(e) acid ester functional polyphenyl ether product.
Further, the mass ratio of the both-end hydroxyl polyphenylene oxide and methacrylic anhydride is 3.2:1；Organic solvent and first
The mass ratio of base acrylic anhydride is (9-12): 1；The mass ratio of catalyst and methacrylic anhydride is (0.4-0.6): 1.
Further, the organic solvent is toluene, and the catalyst is triethylamine；The precipitating reagent is methanol.
Further, the both-end hydroxyl polyphenylene oxide is by 2,6- xylenol, bisphenol-A and diallyl bis-phenol
Compound is catalyst in copper ion-pyridine, total by oxidation coupling in organic solvent B under conditions of oxygen is oxidant
Poly- reaction is made.
Further, the both-end hydroxyl polyphenylene oxide preparation process the following steps are included:
Step 1, be added into dissolution vessel organic solvent B, described 2,6- xylenol, the bisphenol-A and
The diallyl bisphenol compound, stirring and dissolving obtain the first mixed solution；
Organic solvent B, stannous chloride and pyridine is added in the reaction vessel simultaneously, stirs lower toward reaction container bottom
It is passed through air in fixed distribution device in gas-fluid, and is passed through nitrogen toward reaction vessel upper gaseous phase space simultaneously, makes to maintain
It is lower than the limit oxygen concentration of organic solvent B in the oxygen concentration of gas-phase space, keeps the reaction vessel pressure 0.4Mpa, temperature 20
DEG C, timing 30 minutes since blowing air pre-oxidize system in the reaction vessel sufficiently；After the completion of pre-oxidation, obtain
To the second mixed solution；
First mixed solution is added drop-wise in second mixed solution by step 2 with metering pump timing, control drop
It is 1-3 hours between added-time；
Step 3, after being added dropwise, keeping 20 DEG C of reaction temperature, the reaction was continued 3-4 hours；
Step 4 closes air system valve after reaction, is maintained with nitrogen to normal pressure；
System vacuum filter after reaction is obtained the both-end hydroxyl polyphenylene oxide by step 5.
Further, the diallyl bisphenol compound is diallyl bisphenol；The organic solvent B is methanol.
Further, the distribution device in gas-fluid is round stationary structure, is evenly distributed with multiple opening directions thereon
Aperture directed downwardly.
Further, the mass ratio of the bisphenol-A and diallyl bisphenol compound is 1:1；Described 2,6- bis-
The ratio between methylphenol and the bisphenol-A and the gross mass of the diallyl bisphenol compound are 5:1；It is described organic molten
The mass ratio of agent A and described 2,6- xylenol is (1.0-1.5): 1；The organic solvent B and described 2,6- dimethyl benzene
The mass ratio of phenol is 0.8:1；The mass ratio of the stannous chloride and pyridine gross mass and described 2,6- xylenol is (0.4-
0.5):1。
Further, the methyl bisphenol A by 2,6- xylenol and acetone under sour gas catalyst action,
It is prepared in organic solvent A system by being condensed dehydration.
Compared with prior art, beneficial effects of the present invention:
1, the methacrylate functionalized polyphenylene oxide of preparation process prepared by the present invention preparation, the crosslink density of resin into
One step improves, and solvent resistance is much higher than the methacrylate functionalized polyphenylene oxide of prior art preparation, can preferably answer
For high-frequency high-speed electronic field.
2, the methacrylate functionalized polyphenylene oxide of preparation process preparation prepared by the present invention, molecular weight is low, molecular weight
Control is stablized, and even molecular weight distribution is high-frequency high-speed use for electronic products desired matrix resin.
Specific embodiment
The present invention provides a kind of preparation process of the methacrylate functionalized polyphenylene oxide of thermosetting property, the thermosetting property first
Base acrylate functional polyphenylene oxide is carried out by both-end hydroxyl polyphenylene oxide with methacrylic anhydride intermolecular under the action of catalyst
Dehydration esterification reaction forms；Wherein, allyl active group is contained in the both-end hydroxyl polyphenylene oxide.
Chemical equation is as follows:
Preparation process may comprise steps of:
Organic solvent and both-end hydroxyl polyphenylene oxide are added into reaction vessel for step 1, are heated to 35-45 DEG C, stir molten
Solution, obtains both-end hydroxyl polyphenylene oxide lysate；Wherein, organic solvent is preferably toluene.
Catalyst and methacrylic anhydride is added in step 2 in both-end hydroxyl polyphenylene oxide lysate, forms reaction system；
Wherein, catalyst is preferably triethylamine.
In above-mentioned steps, the mass ratio of both-end hydroxyl polyphenylene oxide and methacrylic anhydride is 3.2:1；Organic solvent and methyl
The mass ratio of acrylic anhydride is (9-12): 1；The mass ratio of catalyst and methacrylic anhydride is (0.4-0.6): 1.
The temperature of reaction system is risen to 70-90 DEG C, reacted 4-6 hours by step 3.
Solution after reaction is washed with water to neutrality, is preferably washed with deionized by step 4.
Methacrylate functionalized polyphenylene oxide resin is settled out by step 5 by the solution after washing in precipitating reagent
Come；Wherein, precipitating reagent is preferably methanol.
Methacrylate functionalized polyphenylene oxide resin vacuum filter is dried to obtain thermosetting property metering system by step 6
Acid esters functionalized polyphenylene ether product.
The methacrylate functionalized polyphenylene oxide of the thermosetting property that preparation process of the invention obtains, in solvent resistance test,
Rate of weight loss≤1% illustrates it with preferable crosslink density, can be applied to be applied to high-frequency high-speed electronic field.
Methacrylate functionalized polyphenyl ether product better performance in order to obtain, currently preferred both-end hydroxyl are poly-
Phenylate is that technique is synthesized by the following way to obtain:
Both-end hydroxyl polyphenylene oxide by 2,6- xylenol, bisphenol-A and diallyl bisphenol compound copper from
Son-pyridine be catalyst, oxygen be oxidant under conditions of, in organic solvent B by oxidation coupling copolyreaction be made.
Chemical equation is as follows:
Specifically, it may comprise steps of:
Step 1, addition organic solvent B, 2,6- xylenol, bisphenol-A and diallyl into dissolution vessel
Bisphenol compound, stirring and dissolving obtain the first mixed solution；Wherein, diallyl bisphenol compound is preferably that diallyl is double
Phenol A；Organic solvent B is preferably methanol；The mass ratio of bisphenol-A and diallyl bisphenol compound is 1:1；2,6- diformazan
The ratio between base phenol and bisphenol-A and the gross mass of diallyl bisphenol compound are 5:1；Organic solvent A and 2,6- diformazan
The mass ratio of base phenol is (1.0-1.5): 1.
Organic solvent B, stannous chloride and pyridine is added in reaction vessel simultaneously, is fixed under stirring toward reaction container bottom
Distribution device in gas-fluid in be passed through air, and be passed through nitrogen toward reaction vessel upper gaseous phase space simultaneously, make to maintain gas phase sky
Between oxygen concentration be lower than organic solvent B limit oxygen concentration, keep reaction vessel pressure 0.4Mpa (gauge pressure), 20 DEG C of temperature, from
Blowing air starts timing 30 minutes, pre-oxidizes system in reaction vessel sufficiently；After the completion of pre-oxidation, the second mixing is obtained
Solution；Wherein, the mass ratio of organic solvent B and 2,6- xylenol is 0.8:1；Stannous chloride and pyridine gross mass and 2,6-
The mass ratio of xylenol is (0.4-0.5): 1.
As an implementation, distribution device in gas-fluid is round stationary structure, is evenly distributed with multiple apertures thereon
The aperture being directed downward；Specifically, the shape for the distribution device in gas-fluid that the present invention uses can be circular ring shape, and annulus has multiple
With the radius pipe of connection circle ring center's point, central point and the reactor bottom of round tube are fixed, and annulus is connected to air inlet pipe；Annulus and
The lower part of radius pipe is evenly arranged with multiple apertures, and aperture, which is directed downward the purpose opened up, is, with the progress of reaction, product meeting
It is gradually precipitated in reactor bottom, air is passed through by system to the lower part, the reaction for keeping the solution of bottom full and uniform makes
The reaction of entire reaction system is more uniform.
The cylinder air stream of big stock is divided into the air stream of many thin stocks by distribution device in gas-fluid of the invention when working, stirred
It mixes and is ground into more minute bubbles under the cooperation of device, be passed through in liquid and reacted by multiple uniform small pores on distribution device in gas-fluid, it should
Device can be uniformly distributed in wherein when air can be made to be passed through liquid, more uniform abundant using reacting；In addition make to react institute
The air needed directly passes through connecting pipe outside reactor, is passed directly into the stationary gas distributor of reactor bottom, into
And enter in system solution and participate in oxidation coupling copolyreaction, to thoroughly eliminate the generation of electrostatic.
First mixed solution is added drop-wise in the second mixed solution by step 2 with metering pump timing, and control time for adding is
1-3 hours.
Step 3, after being added dropwise, keeping 20 DEG C of reaction temperature, the reaction was continued 3-4 hours.
Step 4 closes air system valve after reaction, is maintained with nitrogen to normal pressure.
System vacuum filter after reaction is obtained both-end hydroxyl polyphenylene oxide by step 5.
The preparation process of both-end hydroxyl polyphenylene oxide of the present invention, in obtained both-end hydroxyl polyphenyl ether structure, in benzene
In addition to containing CH on ring side chain3Outside structure, also contain a certain number of allyl active group (CH2=CH-CH2), so that tree
The methacrylate functionalized polyphenylene oxide crosslink density with higher that resin system further synthesizes is applied to high-frequency high-speed electricity
When subdomains, resin system solvent resistance well is shown.
In addition, the limit oxygen concentration of methanol system is 10% (VOL/ in the preparation process of above-mentioned both-end hydroxyl polyphenylene oxide
VOL), specifically it can be lower than 10% in the oxygen concentration of gas-phase space using DCS control system combination on-line analysis instrument control system.?
In actual production technique, other than in-line analyzer real-time monitoring is passed through the concentration of oxygen and nitrogen, set of safety phase is gone back
Relationship is united (such as safety instrumented systems SIS), is monitored to substantial risk technique real-time perfoming, and major safety risks occurring
Before, realize Feed Shut-Off and system protection, it is ensured that all safety measures meet country safety supervision general pipeline tri- [2009] No. 116 numbers and
The safety requirements of the dangerous chemical process of [2013] No. 3 emphasis being related to supervision.
It should be noted that in the preparation process of both-end hydroxyl polyphenylene oxide of the invention, used raw material tetramethyl
Bisphenol-A can be the common bisphenol-A bought in the market, but the tetramethyl being preferably prepared by following preparation process
Bisphenol-A:
A kind of preparation process of bisphenol-A, by 2,6- xylenol and acetone in sour gas catalyst action
Under, it is prepared in organic solvent A system by being condensed dehydration.
Chemical equation is as follows:
Specifically, it may comprise steps of:
Organic solvent A, acetone are added in reaction vessel, is stirring evenly and then adding into 2,6- xylenol for step 1, control
0-10 DEG C of temperature in reaction vessel processed is completely dissolved 2,6- xylenol under stirring；Wherein, 2,6- xylenol and third
The mass ratio of ketone is 1:1；The quality of organic solvent A and the mass ratio of acetone are (1.5-2.0): 1；Wherein, organic solvent A is preferred
For toluene.
Step 2 is filled with sour gas catalyst in reaction vessel, and maintaining pressure in reaction vessel is 0.01Mpa table
Pressure, at 0-10 DEG C, clock reaction 6-9 hours；Wherein, sour gas catalyst is preferably HCl gas.
Step 3 makes the lye that sour gas catalyst enters vacuum system in reaction vessel absorb dress after reaction
It sets and is absorbed；
Step 4, distills out unreacted acetone, and vapo(u)rizing temperature is 80 DEG C；
Step 5, temperature, which is maintained at 80-90 DEG C, in reaction vessel carries out neutralization washing, water-soluble with 80-90 DEG C of sodium carbonate
Until liquid is washed till water phase PH=6-7；
Step 6 makes the product sufficient crystallising being dissolved in organic phase at room temperature and is dried to obtain tetramethyl pair after filtering
Phenol A.
The preparation process of bisphenol-A of the invention, the preparation process of bisphenol-A of the invention, preparation process
Simply, the bisphenol-A purity prepared is higher.
Further detailed description is done to the present invention combined with specific embodiments below, but embodiments of the present invention are not limited to
This.
Embodiment one
A kind of preparation process of the methacrylate functionalized polyphenylene oxide of thermosetting property, comprising the following steps:
A, toluene 100kg is added into reaction kettle, both-end hydroxyl polyphenylene oxide 32kg is added, is heated to 40 DEG C, under stiring
Make to be completely dissolved.
B, triethylamine 5kg and methacrylic anhydride 10kg until completely dissolved, is added.
C, 80 DEG C are warming up to, clock reaction 5 hours, reaction terminated.
D, the solution after reaction is washed with deionized to neutrality.
E, methacrylate functionalized polyphenylene oxide resin is precipitated out by the solution after washing in methyl alcohol.
F, finished product is dried to obtain in vacuum filter, product.
Embodiment two
A kind of preparation process of the methacrylate functionalized polyphenylene oxide of thermosetting property, including following two large divisions:
(1) both-end hydroxyl polyphenylene oxide is first synthesized
A, methanol 120kg, DMP100kg and bisphenol-A 10kg, diallyl bisphenol are added into dissolution kettle
10kg makes to be completely dissolved under stirring.
Add methanol 80kg, stannous chloride 0.5kg, pyridine 40kg into reaction kettle simultaneously, stirs lower solid toward reactor bottom
It is passed through air in fixed pattern distribution device in gas-fluid and is passed through N toward reactor upper gaseous phase space simultaneously2, make to maintain gas-phase space
Oxygen concentration is lower than the limit oxygen concentration of organic solvent B, keeps reactor pressure 0.4Mpa (gauge pressure), 20 DEG C of temperature；From blowing air
Start timing 30 minutes, pre-oxidizes system in kettle sufficiently.
B, after the completion of pre-oxidation, DMP/ bisphenol-A/diallyl bisphenol methanol solution in dissolution kettle is used tricks
Amount pump timing is added in reaction kettle, and the control time is 2 hours.
C, after being added dropwise, being kept for 20 DEG C, the reaction was continued 3.5 hours, and as reaction carries out, the product of generation is constantly from first
It precipitates, and disperses in methyl alcohol in alcohol.
D, air system valve after reaction, is closed, N is used2Maintain normal pressure.
E, vacuum filter obtains both-end hydroxyl polyphenyl ether product.
(2) the both-end hydroxyl polyphenylene oxide synthesizing methyl acrylate functional polyphenylene oxide by synthesizing
A, toluene 100kg is added into reaction kettle, both-end hydroxyl polyphenylene oxide 32kg is added, is heated to 40 DEG C, under stiring
Make to be completely dissolved.
B, triethylamine 5kg and methacrylic anhydride 10kg until completely dissolved, is added.
C, 80 DEG C are warming up to, clock reaction 5 hours, reaction terminated.
D, the solution after reaction is washed with deionized to neutrality.
E, methacrylate functionalized polyphenylene oxide resin is precipitated out by the solution after washing in methyl alcohol.
F, finished product is dried to obtain in vacuum filter, product.
Embodiment three
A kind of preparation process of the methacrylate functionalized polyphenylene oxide of thermosetting property, including following three parts:
(1) bisphenol-A is first synthesized
A, into reaction kettle plus toluene 50kg, acetone 30kg, after mixing evenly plus 2,6- xylenol (DMP) 30kg,
0-10 DEG C of reactor temperature of control, is completely dissolved DMP under stirring.
C, HCl gas is filled in reaction kettle, maintaining pressure in kettle is micro-positive pressure (0.01Mpa gauge pressure), at 0-10 DEG C, meter
Shi Fanying 8 hours.
D, HCl gas in kettle after reaction, is made to enter the lye absorption plant of vacuum system.
E, unreacted acetone is distilled out, vapo(u)rizing temperature is 80 DEG C.
F, it during temperature in the kettle carries out at 80-90 DEG C and washs, is washed till water phase PH=6- with 80-90 DEG C of aqueous sodium carbonate
Until 7.
G, dry bisphenol-A finished product after making sufficient crystallising at room temperature and filtering.
The purity of obtained bisphenol-A is 99%.
(2) both-end hydroxyl polyphenylene oxide is synthesized by the bisphenol-A synthesized
A, methanol 120kg, DMP100kg and bisphenol-A 10kg, diallyl bisphenol are added into dissolution kettle
10kg makes to be completely dissolved under stirring.
Add methanol 80kg, stannous chloride 0.5kg, pyridine 40kg into reaction kettle simultaneously, stirs lower solid toward reactor bottom
It is passed through air in fixed pattern distribution device in gas-fluid and is passed through N toward reactor upper gaseous phase space simultaneously2, make to maintain gas-phase space
Oxygen concentration is lower than the limit oxygen concentration of organic solvent B, keeps reactor pressure 0.4Mpa (gauge pressure), 20 DEG C of temperature；From blowing air
Start timing 30 minutes, pre-oxidizes system in kettle sufficiently.
B, after the completion of pre-oxidation, DMP/ bisphenol-A/diallyl bisphenol methanol solution in dissolution kettle is used tricks
Amount pump timing is added in reaction kettle, and the control time is 2 hours.
C, after being added dropwise, being kept for 20 DEG C, the reaction was continued 3.5 hours, and as reaction carries out, the product of generation is constantly from first
It precipitates, and disperses in methyl alcohol in alcohol.
D, air system valve after reaction, is closed, N is used2Maintain normal pressure.
E, vacuum filter obtains both-end hydroxyl polyphenyl ether product.
(3) the both-end hydroxyl polyphenylene oxide synthesizing methyl acrylate functional polyphenylene oxide by synthesizing again
A, toluene 100kg is added into reaction kettle, both-end hydroxyl polyphenylene oxide 32kg is added, is heated to 40 DEG C, under stiring
Make to be completely dissolved.
B, triethylamine 5kg and methacrylic anhydride 10kg until completely dissolved, is added.
C, 80 DEG C are warming up to, clock reaction 5 hours, reaction terminated.
D, the solution after reaction is washed with deionized to neutrality.
E, methacrylate functionalized polyphenylene oxide resin is precipitated out by the solution after washing in methyl alcohol.
F, finished product is dried to obtain in vacuum filter, product.
The methacrylate functionalized polyphenylene oxide of thermosetting property prepared in the above embodiments has following better characteristics:
(1), both-end hydroxyl polyphenylene oxide resin number-average molecular weight (Mn) adjustable extent: 1500-5000；
(2), both-end hydroxyl polyphenylene oxide resin molecular weight distribution (Mn/Mw) range: 1.4-1.6
(3), allyl active group (CH in both-end hydroxyl polyphenylene oxide resin2=CH-CH2) content: 2-4%.
Comparative example one
A kind of preparation process of methacrylate functionalized polyphenylene oxide, comprising the following steps:
A, toluene 60kg is added into reaction kettle, both-end hydroxyl polyphenylene oxide 16kg is added, is heated to 50 DEG C, makes under stiring
It is completely dissolved；Wherein, only contain CH on both-end hydroxyl polyphenylene oxide benzene ring side chain3Group.
B, triethylamine 2kg and methacrylic anhydride 5kg until completely dissolved, is added.
C, 90 DEG C are warming up to, clock reaction 4 hours, reaction terminated.
D, the solution after reaction is washed with deionized to neutrality.
E, methacrylate functionalized polyphenylene oxide resin is precipitated out by the solution after washing in methyl alcohol.
F, finished product is dried to obtain in vacuum filter, product.
Comparative example two
A kind of preparation process of methacrylate functionalized polyphenylene oxide, including following two large divisions:
(1) both-end hydroxyl polyphenylene oxide is first synthesized
A, methanol 120kg, DMP100kg and bisphenol-A 20kg are added into dissolution kettle, makes under stirring completely molten
Solution.
Add methanol 80kg, stannous chloride 0.5kg, pyridine 40kg into reaction kettle simultaneously, keeps reactor pressure 0.4Mpa
(gauge pressure), 20 DEG C of temperature；Timing 30 minutes since blowing air, pre-oxidize system in kettle sufficiently.
B, after the completion of pre-oxidation, DMP/ bisphenol-A/methanol solution in dissolution kettle is added with metering pump timing
In reaction kettle, the control time is 2 hours.
C, after being added dropwise, being kept for 20 DEG C, the reaction was continued 3.5 hours.
D, air system valve after reaction, is closed, N is used2Maintain normal pressure.
E, vacuum filter obtains both-end hydroxyl polyphenyl ether product.
(2) the both-end hydroxyl polyphenylene oxide synthesizing methyl acrylate functional polyphenylene oxide by synthesizing
A, toluene 100kg is added into reaction kettle, both-end hydroxyl polyphenylene oxide 32kg is added, is heated to 40 DEG C, under stiring
Make to be completely dissolved.
B, triethylamine 5kg and methacrylic anhydride 10kg until completely dissolved, is added.
C, 80 DEG C are warming up to, clock reaction 5 hours, reaction terminated.
D, the solution after reaction is washed with deionized to neutrality.
E, methacrylate functionalized polyphenylene oxide resin is precipitated out by the solution after washing in methyl alcohol.
F, finished product is dried to obtain in vacuum filter, product.
The methacrylate functionalized polyphenylene oxide prepared to above-described embodiment and comparative example carries out thermosetting performance test:
The methacrylate functionalized polyphenylene oxide of thermosetting property prepared by Example one, embodiment two and embodiment three respectively
100g, after mixing with bis- (3- ethyl -5- methyl -4- maleimidophenyl) the methane 10g of curing agent, in 200 DEG C of items
Solidify 60 minutes under part, after being impregnated 12 hours in solvent chloroform, weighs after dry, calculate loss late.As a comparison, it takes
Comparative example one and comparative example two methacrylate functionalized polyphenylene oxide and bis- (3- ethyl -5- without allyl active group
Methyl -4- maleimidophenyl) methane system, loss late is calculated after similarity condition is handled.It the results are shown in Table 1:
1 product solvent resistance test result of table
| Test product | Loss late (%) |
| One product of embodiment | 0.8% |
| Two product of embodiment | 0.6% |
| Three product of embodiment | 0.5% |
| One product of comparative example | 3% |
| Two product of comparative example | 4% |
As it can be seen from table 1 preparation process of the invention, obtained methacrylate functionalized polyphenylene oxide is due to containing
More active groups have higher crosslink density, than methacrylate functionalized without containing allyl active group
Polyphenylene oxide shows better solvent resistance in solvent resistance test, and existing thermosetting polyphenylene ether tree can be overcome to be applied to
When high-frequency high-speed electronic field, solvent resistance difference limits the defect of its application.
The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments, and it cannot be said that
Specific implementation of the invention is only limited to these instructions.For those of ordinary skill in the art to which the present invention belongs, exist
Under the premise of not departing from present inventive concept, a number of simple deductions or replacements can also be made, all shall be regarded as belonging to of the invention
Protection scope.
Claims (10)
1. a kind of preparation process of the methacrylate functionalized polyphenylene oxide of thermosetting property, which is characterized in that the thermosetting property methyl
Acrylate functional polyphenylene oxide is carried out intermolecular de- under the action of catalyst by both-end hydroxyl polyphenylene oxide and methacrylic anhydride
Water esterification forms；Wherein, allyl active group is contained in the both-end hydroxyl polyphenylene oxide.
2. preparation process according to claim 1, which comprises the following steps:
Organic solvent and both-end hydroxyl polyphenylene oxide are added into reaction vessel, is heated to 35-45 DEG C, stirring and dissolving obtains for step 1
To both-end hydroxyl polyphenylene oxide lysate；
Catalyst and methacrylic anhydride is added in step 2 in the both-end hydroxyl polyphenylene oxide lysate, forms reaction system；
The temperature of the reaction system is risen to 70-90 DEG C, reacted 4-6 hours by step 3；
Solution after reaction is washed with water to neutrality by step 4；
Methacrylate functionalized polyphenylene oxide resin is precipitated out by step 5 by the solution after washing in precipitating reagent；
The methacrylate functionalized polyphenylene oxide resin vacuum filter is dried to obtain the thermosetting property methyl by step 6
Acrylate functional polyphenyl ether product.
3. preparation process according to claim 2, which is characterized in that the both-end hydroxyl polyphenylene oxide and methacrylic anhydride
Mass ratio be 3.2:1；The mass ratio of organic solvent and methacrylic anhydride is (9-12): 1；Catalyst and methacrylic anhydride
Mass ratio be (0.4-0.6): 1.
4. preparation process according to claim 1, which is characterized in that the organic solvent is toluene, and the catalyst is
Triethylamine；The precipitating reagent is methanol.
5. preparation process according to claim 1, which is characterized in that the both-end hydroxyl polyphenylene oxide is by 2,6- dimethyl benzene
Phenol, bisphenol-A and diallyl bisphenol compound copper ion-pyridine be catalyst, oxygen be oxidant under conditions of,
It is made in organic solvent B by oxidation coupling copolyreaction.
6. preparation process according to claim 5, which is characterized in that the preparation process of the both-end hydroxyl polyphenylene oxide includes
Following steps:
Organic solvent B, described 2,6- xylenol, the bisphenol-A and described are added into dissolution vessel for step 1
Diallyl bisphenol compound, stirring and dissolving obtain the first mixed solution；
Organic solvent B, stannous chloride and pyridine is added in the reaction vessel simultaneously, is fixed under stirring toward reaction container bottom
Distribution device in gas-fluid in be passed through air, and be passed through nitrogen toward reaction vessel upper gaseous phase space simultaneously, make to maintain gas
The oxygen concentration of phase space is lower than the limit oxygen concentration of organic solvent B, keeps 20 DEG C of the reaction vessel pressure 0.4Mpa, temperature,
Timing 30 minutes since blowing air pre-oxidize system in the reaction vessel sufficiently；After the completion of pre-oxidation, is obtained
Two mixed solutions；
First mixed solution is added drop-wise in second mixed solution by step 2 with metering pump timing, when control is added dropwise
Between be 1-3 hours；
Step 3, after being added dropwise, keeping 20 DEG C of reaction temperature, the reaction was continued 3-4 hours；
Step 4 closes air system valve after reaction, is maintained with nitrogen to normal pressure；
System vacuum filter after reaction is obtained the both-end hydroxyl polyphenylene oxide by step 5.
7. preparation process according to claim 6, which is characterized in that the diallyl bisphenol compound is diallyl
Bisphenol-A；The organic solvent B is methanol.
8. preparation process according to claim 6, which is characterized in that the distribution device in gas-fluid is round fixed knot
Structure is evenly distributed with multiple opening directions aperture directed downwardly thereon.
9. preparation process according to claim 6, which is characterized in that the bisphenol-A and diallyl are bisphenol
The mass ratio for closing object is 1:1；Described 2,6- xylenol and the bisphenol-A and the diallyl bisphenol compound
The ratio between gross mass be 5:1；The mass ratio of the organic solvent A and described 2,6- xylenol is (1.0-1.5): 1；It is described
The mass ratio of organic solvent B and described 2,6- xylenol is 0.8:1；The stannous chloride and pyridine gross mass with described 2,
The mass ratio of 6- xylenol is (0.4-0.5): 1.
10. preparation process according to claim 5, which is characterized in that the methyl bisphenol A by 2,6- xylenol with
Acetone is prepared in organic solvent A system by being condensed dehydration under sour gas catalyst action.
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