CN110540610A - (methyl) acrylate polymer and preparation method thereof - Google Patents
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Abstract
the invention discloses a (methyl) acrylate polymer with a structural formula (I), wherein all substituents are shown in the specification, and the invention also discloses a preparation method of the (methyl) acrylate polymer. The polymer disclosed by the invention has a novel structure and a wide application range.
Description
Technical Field
the invention belongs to the field of organic high molecular compounds, and relates to a (methyl) acrylate polymer and a preparation method thereof.
Background
The acrylate materials have wide application range, such as: polymethyl methacrylate is used as a medical bone cement raw material for a long time; the polyacrylate/montmorillonite composite system can be used as a flame retardant material; water-soluble polyacrylates are often used as adhesives and paints; the polycyanoacrylate is a main raw material of the instant adhesive; the fluorine-containing polyacrylate can be used in the fields of textile finishing agents, paper product treating agents, electronic device protection and the like. The acrylate polymer with the novel structure is also expected to be applied to the fields of biomedicine, coating paint, macromolecular modification, polymer grafting and the like.
The synthesis method of the acrylate polymer mainly comprises three methods of free radical polymerization, coordination polymerization and anion polymerization. The free radical polymerization method has already realized the commercial process at present, and the controlled/"living" free radical polymerization that evolves on the basis of traditional free radical polymerization can prepare the polymer with controllable microstructure, polymer, polydispersity, but this method preparation route is longer, often cause heavy metal initiator or sulphur-containing initiator residue, post treatment (purification) are complicated.
Coordination polymerization processes are usually carried out in systems with a low degree of solvation, and in such cases polymers with stereoregularity are often prepared by utilizing the strong coordination capacity of polar monomers such as acrylates in combination with homogeneous initiators. In recent years, more and more polar monomers are introduced into a coordination polymerization system using a novel coordination polymerization catalyst to produce a variety of novel acrylic polymers. However, it is often difficult to incorporate more polar monomer and less polar monomer species are used.
The anion polymerization method mainly utilizes the characteristic that the electron cloud density of vinyl double bonds on acrylate which has electron-withdrawing groups and conjugated by pi-pi is low, so that anion active centers generated after anion attack can stably exist to initiate polymerization reaction, and the polymerization system of the method can keep activity all the time theoretically due to the fact that no double-group termination exists, so that the method is also called active anion polymerization. In recent years, oxyanion polymerization, which has evolved based on anion polymerization, has become a focus of research, for example:
(1) Tomoi et al, Tomoi M., Sekiya K., Kakiuchi H.Polymer Journal, 1974,6(5),438-444, 1974, disclose a process for preparing methyl methacrylate polymers after initiating the polymerization of methyl methacrylate using sodium n-butoxide and methoxy oxyethyl salts as initiators. The method can obtain high monomer conversion rate under certain experimental conditions, but the applicable alkali metal alkoxy compound and (methyl) acrylate monomer are too single, and the polymerization time is too long;
(2) The publications Nagasaki Y., Sato Y., Kato M.macromolecular Rapid Communications,1997, 18(9), 827-835; iijima M., Nagasaki Y., Kato M., Kataoka K.Polymer,1997,38(5), 1197-. The method can prepare polymers with narrow molecular weight distribution, but the types of the applicable alkali metal alkoxy compounds are few, and the types of the (methyl) acrylic ester monomers are too single.
the structure of the (meth) acrylate polymer represented by the structural formula (I) described in the present application is not reported in the prior art.
Therefore, it is necessary to develop a structure of a novel (meth) acrylate polymer and to study a method for producing the same.
Disclosure of Invention
the invention aims to provide a (methyl) acrylate polymer, which has the following structural formula (I):
Wherein:
n is selected from 3-300;
R1 is selected from
r2 is selected from-H or-CH 3;
R3 is selected from-CH 3, -CH2CH3, -CH2CH2CH2CH3, - (CH2)5CH3, - (CH2)7CH3, - (CH2)11CH3, - (CH2)17CH3, - (CH2CH2O) PCH3, CH2CF3, -CH2CHFCF3, -CH2CF2CF3, -CH2CH2CF2CF3, -CH2CF2CHFCF3, -CH2CF2CF3, -CH2CH2(CF2)3CF3, CH2CH2(CF2)5CF3 or-CH 2CH2(CF2)7CF3, wherein p is selected from an integer of 8-20;
The number average molecular weight of the (meth) acrylate polymer is 1200 to 75000, and the molecular weight distribution is 1 to 4.
The substituent R1 of the (methyl) acrylic ester polymer with the structural formula (I) is selected from CH2CH2CH2OCH ═ CH 2.
preferably, R1 is selected from-CH 2OCH ═ CH 2.
Further preferably, R1 is selected from-CH 2OCH ═ CH 2.
More preferably, R1 is selected from-CH 2OCH ═ CH 2.
The substituent R2 of the (methyl) acrylate polymer with the structural formula (I) provided by the invention is selected from-H or-CH 3.
Preferably, the substituent R2 is selected from-CH 3.
the substituent R3 of the (methyl) acrylate polymer with the structural formula (I) provided by the invention is selected from-CH 3, -CH2CH3, -CH2CH2CH 3, - (CH2)5CH3, - (CH2)7CH3, - (CH2)11CH3, - (CH2)17CH3, - (CH2CH2O) PCH3, -CH2CH2OH, -CH2CF3, -CH2CHFCF3, -CH2CF2CF3, -CH2CH2CF2CF 2CF3, -CH2CF2CHFCF3, -CH2CF2CF2CF3, -CH2CH2(CF2)3CF3, -CH2CH2(CF2)5CF3 or-CH 2CH2(CF2)7CF3, wherein p is selected from an integer of 8-20.
Preferably, R3 is selected from-CH 3, -CH2CH3, -CH2CH2CH 3, - (CH2)5CH3, - (CH2)7CH3, - (CH2)11CH3, - (CH2)17CH3, - (CH2CH2O) PCH3, -CH2CH2OH, -CH2CF3, -CH2CHFCF3, -CH2CF2CF3, -CH2CH2CF2CF 2CF3, -CH2CF2CHFCF3, -CH2CF2CF2CF3, -CH2CH2(CF2)3CF3, -CH2CH2(CF2)5CF3, or-CH 2CH2(CF2)7CF3, wherein p is selected from an integer of 8 to 20.
further preferably, R3 is selected from-CH 3, -CH2CH3, -CH2CH2CH2CH3, - (CH2CH2O) PCH3, -CH2CF3, -CH2CHFCF3, or-CH 2CH2(CF2)7CF3, wherein p is selected from an integer of 8-20.
most preferably, the R3 is selected from-CH 3, -CH2CH2CH2CH3 or
The number average molecular weight of the (methyl) acrylate polymer with the structural formula (I) is 1200-75000, and the molecular weight distribution is 1-4.
Preferably, the number average molecular weight of the (meth) acrylate polymer is 1200 to 30000, and the molecular weight distribution is 1 to 4.
The present invention also provides a method for preparing the (meth) acrylate polymer having the structural formula (I), using an initiator including an alkali metal alkoxide.
For the acrylate monomer, the ester group connected with the vinyl has the charge absorption property, so that the density of vinyl electron cloud of the acrylate is reduced, thereby facilitating the attack of a nucleophilic reagent to the double bond and initiating the polymerization. The use of alkali metal alkoxide compounds with high nucleophilicity can effectively initiate the polymerization of acrylate monomers.
The alkali metal alkoxide is preferably selected from the group consisting of potassium trimethylsilanolate, sodium trimethylsilanolate, potassium 3-cyclohexene-1-methanolate, sodium 3-cyclohexene-1-methanolate, potassium diphenylmethanolate, sodium diphenylmethanolate, potassium 2-phenoxyethanolate, sodium 2-phenoxyethanolate, potassium 3-piperidinemethanolate, sodium 3-piperidinemethanolate, potassium tridecafluorooctanoate, sodium tridecafluorooctanoate, potassium 4- (difluoromethoxy) benzylalkoxide, sodium 4- (difluoromethoxy) benzylalkoxide, potassium 2, 3-difluorophenylmethanolate, sodium 2, 3-difluorophenylmethanolate, potassium 4-fluoro-3- (trifluoromethyl) phenylmethanolate, sodium methoxide, sodium 3-piperidinemethanolate, potassium tridecafluorooctanoate, potassium 4-fluoro-, 2-methyl-1-phenyl-2-propanol potassium, 2-methyl-1-phenyl-2-propanol sodium, 3-benzene propanol potassium, 3-benzene propanol sodium, p-aminobenzene methanol potassium, p-aminobenzene sodium methoxide, 4-chlorine-2-formic acid phenol potassium, 4-chlorine-2-formic acid phenol sodium, 4-bromine-2-formic acid phenol potassium, 4-bromine-2-formic acid phenol sodium, 4-vinyl oxygen-1-butanol potassium and 4-vinyl oxygen-1-butanol sodium at least one kind.
It is further preferred that the alkali metal alkoxide is selected from the group consisting of potassium trimethylsilanolate, potassium 3-cyclohexene-1-methoxide, sodium 3-cyclohexene-1-methoxide, potassium diphenylmethoxide, sodium diphenylmethoxide, potassium 2-phenoxyethoxide, sodium 2-phenoxyethoxide, potassium 3-piperidinecarboxylate, sodium 3-piperidinecarboxylate, potassium tridecafluorooctanoate, sodium tridecafluorooctanoate, potassium 4- (difluoromethoxy) benzylate, potassium 2, 3-difluorophenoxymethoxide, potassium 4-fluoro-3- (trifluoromethyl) benzylate, potassium 2-methyl-1-phenyl-2-propoxide, sodium 2-methyl-1-phenyl-2-propoxide, potassium 3-phenylpropanoate, potassium 2-methyl-1-phenyl-2-propoxide, potassium phenoxide, At least one of sodium 3-phenylpropionate, potassium p-aminobenzoate, sodium p-aminobenzoate, potassium 4-vinyloxy-1-butoxide, and sodium 4-vinyloxy-1-butoxide.
still more preferably, the alkali metal alkoxide is at least one selected from the group consisting of potassium trimethylsilanolate, potassium 3-cyclohexene-1-methoxide, sodium 3-cyclohexene-1-methoxide, potassium diphenylmethoxide, sodium diphenylmethoxide, potassium 2-phenoxyethoxide, sodium 2-phenoxyethoxide, potassium 3-piperidinemethanolate, sodium 3-piperidinemethanolate, potassium 2-methyl-1-phenyl-2-propoxide, potassium 3-phenylpropionate, potassium p-aminobenzoate, potassium 4-vinyloxy-1-butoxide and sodium 4-vinyloxy-1-butoxide.
most preferably, the alkali metal alkoxide is at least one selected from the group consisting of potassium trimethylsilanolate, potassium 3-cyclohexene-1-methoxide, potassium diphenylmethoxide, potassium 2-phenoxyethoxide, potassium 3-piperidinemethanolate, potassium 4-vinyloxy-1-butoxide, and sodium 4-vinyloxy-1-butoxide.
the invention also provides a preparation method of the (methyl) acrylate polymer with the structural formula (I), which is preferably carried out in the presence of an aprotic organic solvent.
The amount of the initiator may be such that the polymerization reaction proceeds smoothly.
Preferably, the molar ratio of the initiator to the polymerization monomer is 3-300: 1.
More preferably, the molar ratio of the initiator to the polymerization monomer is 25-75: 1.
The aprotic organic solvent is preferably at least one selected from the group consisting of tetrahydrofuran, toluene, benzene, dimethyl sulfoxide, N-dimethylformamide, diethyl ether, isopropyl ether, carbon tetrachloride, cyclohexane, N-hexane, petroleum ether, dioxane, triethylamine, 1,1,1,3, 3-pentafluorobutane, methyl perfluoropropyl ether, methyl perfluorobutyl ether, methyl perfluoroisobutyl ether, ethyl perfluorobutyl ether and ethyl perfluoroisobutyl ether.
Further preferably, the aprotic organic solvent is at least one selected from the group consisting of tetrahydrofuran, toluene, dimethyl sulfoxide and N, N-dimethylformamide.
the amount of the aprotic organic solvent used is sufficient to allow the polymerization reaction to proceed smoothly.
Preferably, the volume ratio of the aprotic organic solvent to the polymerized monomer is 1:8 to 100: 3.
More preferably, the volume ratio of the aprotic organic solvent to the polymerizable monomer is 2:1 to 6: 1.
The invention also provides a preparation method of the (methyl) acrylate polymer with the structural formula (I), and the reaction temperature is satisfied to ensure that the polymerization reaction is smoothly carried out.
preferably, the reaction temperature is-20 to 80 ℃.
further preferably, the reaction temperature is 20-65 ℃.
Part of index testing methods of the (methyl) acrylate polymer prepared by the invention are as follows:
(1) number average molecular weight, molecular weight distribution: data processing by Gel Permeation Chromatography (GPC) using a PL-220 gel permeation chromatograph (Polymer Laboratories) using 2 PL-gel 5 μm MIXED-C columns with a column separation range of 500 to 6X 106 using a universal calibration method based on narrow distribution polystyrene standards. Preparing a sample of the polymer at normal temperature, taking Tetrahydrofuran (THF) as a solvent, and obtaining the following sample concentration: 2 to 3 wt%. The testing temperature is 40 ℃, THF is used as a mobile phase, and the flow rate is 1.0 mL/min;
(2) A hydrogen spectrum; measured by NMR spectroscopy using a Bruker model 600MHz NMR spectrometer. The frequency of the test is 600MHz by adopting a 5mm nuclear magnetic tube. When the sample is tested, the sample is dissolved in deuterated chloroform containing tetramethylsilane, the concentration is 3 wt%, the testing temperature is 25 ℃, scanning is carried out for 16 times, and tetramethylsilane is used as an internal standard.
Drawings
FIG. 1 GPC curves of polymers prepared in example 1.
FIG. 2 1H nuclear magnetic map of the polymer prepared in example 1.
Detailed Description
The present invention is further illustrated by the following examples, which are not intended to limit the invention to these embodiments. It will be appreciated by those skilled in the art that the present invention encompasses all alternatives, modifications and equivalents as may be included within the scope of the claims.
Example 1
a100 ml Schlenk reaction flask with a mouth was evacuated, the flask was baked with an electric heating gun under vacuum for 3 minutes, cooled to room temperature (about 25 ℃ C.) and then replaced with nitrogen gas 3 times, and finally the flask was filled with 0.1MPa of nitrogen gas. The reaction was placed in a constant temperature magnetic water bath at a set polymerization temperature (65 ℃). To the flask were added in this order 25 ml (volume ratio 1: 4) of a tetrahydrofuran/dimethylene sulfoxide mixed solution as a solvent and sodium 4-vinyloxy-1-butoxide (1.96 mmol) as an alkali metal alkoxide to dissolve potassium 4-vinyloxy-1-butoxide in dimethyl sulfoxide, and then methyl methacrylate (5 ml) was added to the flask to start the polymerization reaction. The pressure in the bottle was kept at 0.1MPa during the polymerization. After 2 hours of polymerization, the reaction flask was charged with anhydrous methanol to quench the polymerization. After quenching, the contents were treated with cation exchange resin in the hydrogen form, collected by spin drying, and finally dried under vacuum at 50 ℃ to constant weight and weighed. 2.55 g of polymer are obtained with a conversion of 49%.
The polymer obtained was tested to have a degree of polymerization n of 28, a number average molecular weight of 3000g/mol as determined by GPC (see FIG. 1), and a molecular weight distribution of 1.19.
The 1H nuclear magnetic diagram of the prepared polymer is shown in the attached figure 2.
Example 2
Polymerization conditions were the same as in example 1 except that the polymerization temperature was changed from 65 ℃ to 22 ℃, the reaction solvent was changed from the tetrahydrofuran/dimethylene sulfoxide mixed solution to 16 ml of tetrahydrofuran, and the alkali metal alkoxide sodium 4-vinyloxy-1-butoxide (1.96 mmol) was changed to potassium 4-vinyloxy-1-butoxide (1.65 mmol). 4.36 g of polymer are obtained, conversion 85%.
The polymer obtained was tested to have a degree of polymerization n of 30, a number average molecular weight of 3200g/mol and a molecular weight distribution of 1.61. The hydrogen spectrum confirmed that the above polymer was obtained.
Example 3
polymerization conditions As in example 1, the polymerization temperature was changed from 65 ℃ to 20 ℃ only, the reaction solvent was changed from the tetrahydrofuran/dimethylene sulfoxide mixed solution to 10 ml of tetrahydrofuran, the sodium alkali metal alkoxide 4-vinyloxy-1-butoxide (1.96 mmol) to potassium trimethylsilanolate (0.40 mmol), the monomer methyl methacrylate (5 ml) was changed to benzyl methacrylate (2 ml), and the polymerization time was changed from 2 hours to 8 hours. 1.96 g of polymer are obtained, the conversion being 92%.
the polymer obtained was tested to have a degree of polymerization n of 17, a number average molecular weight of 3100g/mol and a molecular weight distribution of 1.32. The hydrogen spectrum confirmed that the above polymer was obtained.
Example 4
polymerization conditions As in example 1, the polymerization temperature was changed from 65 ℃ to 30 ℃ only, the reaction solvent was changed from the tetrahydrofuran/dimethylene sulfoxide mixed solution to 10 ml (volume ratio 4: 1) of the tetrahydrofuran/N, N-dimethylformamide mixed solution, the sodium alkali metal alkoxide 4-vinyloxy-1-butoxide (1.96 mmol) was changed to potassium 3-piperidinemethanolate (0.91 mmol), and the amount of the monomeric methyl methacrylate was changed from 5 ml to 3 ml. 2.43 g of polymer are obtained with a conversion of 79%.
The polymer obtained was tested to have a degree of polymerization n of 23, a number average molecular weight of 2500g/mol and a molecular weight distribution of 1.21. The hydrogen spectrum confirmed that the above polymer was obtained.
example 5
Polymerization conditions were the same as in example 1 except that the polymerization temperature was changed from 65 ℃ to 20 ℃, the reaction solvent was changed from the tetrahydrofuran/dimethylene sulfoxide mixed solution to 10 ml of tetrahydrofuran, the sodium alkali metal alkoxide 4-vinyloxy-1-butoxide (1.96 mmol) was changed to potassium 2-phenoxyethoxide (0.90 mmol), and the monomer methyl methacrylate was changed to n-butyl methacrylate. 3.58 g of polymer are obtained with a conversion of 78%.
The polymer obtained was tested to have a degree of polymerization n of 38, a number average molecular weight of 5600g/mol, and a molecular weight distribution of 1.65. The hydrogen spectrum confirmed that the above polymer was obtained.
Example 6
Polymerization conditions were the same as in example 1 except that the polymerization temperature was changed from 65 ℃ to 60 ℃, 25 ml (volume ratio 1: 4) of the tetrahydrofuran/dimethylene sulfoxide mixed solution as the reaction solvent was changed to 12 ml (volume ratio 7: 5) of the tetrahydrofuran/dimethylene sulfoxide mixed solution, sodium 4-vinyloxy-1-butoxide (1.96 mmol) as the alkali metal alkoxide was changed to potassium 3-cyclohexene-1-methoxide (0.32 mmol), methyl methacrylate (5 ml) as the monomer was changed to n-butyl methacrylate (2 ml), and the polymerization time was changed from 2 hours to 0.5 hours. 1.47 g of polymer were obtained with a conversion of 81%.
The polymer obtained was tested to) have a value for the degree of polymerization n of 36, a number average molecular weight of 5200g/mol and a molecular weight distribution of 1.30. The hydrogen spectrum confirmed that the above polymer was obtained.
Example 7
Polymerization conditions were the same as in example 1, except that the polymerization temperature was changed from 65 ℃ to 25 ℃, the reaction solvent was changed from the tetrahydrofuran/dimethylene sulfoxide mixed solution to the tetrahydrofuran/toluene mixed solution of 10 ml (volume ratio: 9: 1), the alkali metal alkoxide sodium 4-vinyloxy-1-butoxide (1.96 mmol) was changed to potassium diphenylmethoxide (0.27 mmol), the amount of the monomeric methyl methacrylate was changed from 5 ml to 2 ml, and the polymerization time was changed from 2 hours to 1 hour. 1.97 g of polymer are obtained with a conversion of 97%.
the polymer obtained was tested to have a degree of polymerization n of 63, a number average molecular weight of 6500g/mol and a molecular weight distribution of 2.20. The hydrogen spectrum confirmed that the above polymer was obtained.
Claims (12)
1. A (meth) acrylate polymer having the following structural formula (I):
Wherein:
n is selected from 3-300;
R1 is selected from-CH 2CH2(CF2)5CF3, or-CH 2OCH ═ CH 2;
R2 is selected from-H or-CH 3;
R3 is selected from-CH 3, -CH2CH2CH 3, - (CH2)7CH3, - (CH2)11CH3, - (CH2)17CH3, - (CH2CH2O) PCH3, -CH2CH2OH, -CH2CF3, -CH2CHFCF3, -CH2CF2CF3, -CH2CH2CF2CF3, -CH2CF2CHFCF3, -CH2CF2CF2CF3, -CH2CH2(CF2)3CF3, CH2CH2(CF2)5CF3, or-CH 2CH2(CF2)7CF3, wherein p is selected from an integer of 8-20;
The number average molecular weight of the (meth) acrylate polymer is 1200 to 75000, and the molecular weight distribution is 1 to 4.
2. The (meth) acrylic acid ester-based polymer according to claim 1, wherein:
R1 is selected from-CH 2CH2(CF2)5CF3, or-CH 2OCH ═ CH 2;
R2 is selected from-H or-CH 3;
R3 is selected from-CH 3, -CH2CH3, -CH2CH2CH2CH3, - (CH2)5CH3, - (CH2)7CH3, - (CH2)11CH3, - (CH2)17CH3, - (CH2CH2O) PCH3-CH2CH2OH, -CH2CF3, -CH2CHFCF3, -CH2CF2CF3, CH2CH2CF2CF3, -CH2CF2CHFCF3, -CH2CF2CF3, -CH2CH2(CF2)3CF3, -CH2CH2(CF2)5CF3, or-CH 2CH2(CF2)7CF3, wherein p is selected from an integer of 8-20;
The number average molecular weight of the (meth) acrylate polymer is 1200 to 30000, and the molecular weight distribution is 1 to 4.
3. the (meth) acrylic acid ester-based polymer according to claim 2, wherein:
r1 is selected from-CH 2OCH ═ CH 2;
r2 is selected from-CH 3;
R3 is selected from-CH 3, -CH2CH3, -CH2CH2CH2CH3, (CH2CH2O) PCH3, -CH2CF3, CH2CHFCF3, or CH2CH2(CF2)7CF3, wherein p is selected from an integer of 8-20;
The number average molecular weight of the (methyl) acrylate polymer is 2500-6500, and the molecular weight distribution is 1-3.
4. The (meth) acrylic ester polymer according to claim 3, wherein:
R1 is selected from-CH 2OCH ═ CH 2;
R2 is selected from-CH 3;
R3 is selected from-CH 3, -CH2CH2CH2CH3 or
5. The (meth) acrylic ester polymer according to claim 1, wherein the (meth) acrylic ester polymer is prepared by a method comprising:
The initiator used comprises an alkali metal alkoxide selected from the group consisting of potassium trimethylsilanolate, sodium trimethylsilanolate, potassium 3-cyclohexene-1-methanolate, potassium diphenylmethanolate, sodium diphenylmethanolate, potassium 2-phenoxyethanolate, sodium 2-phenoxyethanolate, potassium 3-piperidinecarboxylate, sodium 3-piperidinecarboxylate, potassium tridecafluorooctanoate, sodium tridecafluorooctanoate, potassium 4- (difluoromethoxy) benzylalkoxide, sodium 4- (difluoromethoxy) benzylalkoxide, potassium 2, 3-difluorobenzenemethanolate, 2, 3-difluoromethanolate, potassium 4-fluoro-3- (trifluoromethyl) benzenemethanolate, sodium 4-fluoro-3- (trifluoromethyl) benzenemethanolate, potassium 3-piperidinecarboxylate, 2-methyl-1-phenyl-2-propanol potassium, 2-methyl-1-phenyl-2-propanol sodium, 3-benzene propanol potassium, 3-benzene propanol sodium, p-aminobenzene methanol potassium, p-aminobenzene sodium methoxide, 4-chlorine-2-formic acid phenol potassium, 4-chlorine-2-formic acid phenol sodium, 4-bromine-2-formic acid phenol potassium, 4-bromine-2-formic acid phenol sodium, 4-vinyl oxygen-1-butanol potassium and 4-vinyl oxygen-1-butanol sodium at least one kind.
6. the (meth) acrylate polymer according to claim 5, wherein the alkali metal alkoxide is selected from the group consisting of potassium trimethylsilanolate, potassium 3-cyclohexene-1-methanolate, potassium diphenylmethanolate, sodium diphenylmethanolate, potassium 2-phenoxyethanolate, sodium 2-phenoxyethanolate, potassium 3-piperidinemethanolate, sodium 3-piperidinemethanolate, potassium tridecafluorooctanoate, sodium tridecafluorooctanoate, potassium 4- (difluoromethoxy) benzylalkoxide, potassium 2, 3-difluorobenzenemethanolate, potassium 4-fluoro-3- (trifluoromethyl) benzenemethanolate, potassium 2-methyl-1-phenyl-2-propanolate, sodium 2-methyl-1-phenyl-2-propanolate, At least one of potassium 3-phenylpropionate, sodium 3-phenylpropionate, potassium p-aminobenzoate, sodium p-aminobenzoate, potassium 4-vinyloxy-1-butoxide, and sodium 4-vinyloxy-1-butoxide.
7. the (meth) acrylic acid ester polymer according to claim 5, wherein said alkali metal alkoxide is at least one member selected from the group consisting of potassium trimethylsilanolate, potassium 3-cyclohexene-1-methanolate, potassium diphenylmethanolate, sodium diphenylmethanolate, potassium 2-phenoxyethanolate, sodium 2-phenoxyethanolate, potassium 3-piperidinecarboxylate, sodium 3-piperidinecarboxylate, potassium 2-methyl-1-phenyl-2-propanolate, potassium 3-phenylpropanolate, potassium p-aminobenzoate, potassium 4-vinyloxy-1-butanolate and sodium 4-vinyloxy-1-butanolate.
8. the (meth) acrylate polymer according to claim 5, wherein the alkali metal alkoxide is at least one member selected from the group consisting of potassium trimethylsilanolate, potassium 3-cyclohexene-1-methoxide, potassium diphenylmethoxide, potassium 2-phenoxyethoxide, potassium 3-piperidinemethanolate, potassium 4-vinyloxy-1-butoxide and sodium 4-vinyloxy-1-butoxide.
9. the (meth) acrylate polymer according to claim 5, characterized in that the preparation of the (meth) acrylate polymer is carried out in the presence of an aprotic organic solvent selected from at least one of tetrahydrofuran, toluene, benzene, dimethyl sulfoxide, N-dimethylformamide, diethyl ether, isopropyl ether, carbon tetrachloride, cyclohexane, N-hexane, petroleum ether, dioxane, triethylamine, 1,1,1,3, 3-pentafluorobutane, methyl perfluoropropyl ether, methyl perfluorobutyl ether, methyl perfluoroisobutyl ether, ethyl perfluorobutyl ether or ethyl perfluoroisobutyl ether.
10. The (meth) acrylic acid ester-based polymer according to claim 9, wherein the aprotic organic solvent is at least one selected from the group consisting of tetrahydrofuran, toluene, dimethyl sulfoxide and N, N-dimethylformamide.
11. The (meth) acrylic ester polymer according to claim 9, wherein the (meth) acrylic ester polymer is prepared by a method comprising:
The molar ratio of the initiator to the polymerization monomer is 3-300: 1;
The volume ratio of the aprotic organic solvent to the polymerization monomer is 1: 8-100: 3;
the reaction temperature is-20 to 80 ℃.
12. The (meth) acrylic ester polymer according to claim 11, wherein the (meth) acrylic ester polymer is prepared by a method comprising:
The molar ratio of the initiator to the polymerization monomer is 25-75: 1;
the volume ratio of the aprotic organic solvent to the polymerization monomer is 2: 1-6: 1;
The reaction temperature is 20-65 ℃.
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2617779A (en) * | 1949-05-28 | 1952-11-11 | Gen Electric | Plasticized vinyl halide resins and electrical conductors insulated therewith |
| CN1089957A (en) * | 1992-11-27 | 1994-07-27 | 埃勒夫阿托化学有限公司 | Prepare the method for high heat resistance thermoplastic elastomeric block copolymers and the product of gained with conjugated diolefine and methyl methacrylate |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2617779A (en) * | 1949-05-28 | 1952-11-11 | Gen Electric | Plasticized vinyl halide resins and electrical conductors insulated therewith |
| CN1089957A (en) * | 1992-11-27 | 1994-07-27 | 埃勒夫阿托化学有限公司 | Prepare the method for high heat resistance thermoplastic elastomeric block copolymers and the product of gained with conjugated diolefine and methyl methacrylate |
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| JOONKEUN MIN等: "Effects of Different Reactive Oxyanionic Initiators on the Anionic Polymerizaition of n-Hexyl Isocyanate", 《MACROMOLECULES》 * |
| ZUNDEL, T等: "Climbing Back up the Nucleophilic Reactivity Scale. Use of Cyclosila Derivatives as Reactivity Boosters in Anionic Polymerization", 《MACROMOLECULES》 * |
| 刘琼琼: "MMA-DMAEMA两亲嵌段共聚物的合成", 《科技进展》 * |
| 刘琼琼: "甲基丙烯酸酯类单体的氧阴离子聚合", 《苏州大学硕士毕业论文》 * |
| 邹斌等: "醇钾及酚钾在甲基丙烯酸甲酯阴离子聚合中的应用", 《功能高分子学报》 * |
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