JP5476097B2 - New polymer - Google Patents

Description

  The present invention relates to a polymer having a double bond conjugated with an aromatic ring in a repeating unit.

  A polymer having a double bond conjugated with an aromatic ring in a repeating unit is a polymer useful as a curable resin because it can be further polymerized by a double bond. Specifically, a polymer having a phenyl group substituted with a vinyl group in the side chain, a photo radical generator, and absorption in the wavelength range from visible light to infrared light to sensitize the photo radical generator A photosensitive composition containing a sensitizer is known.

  Examples of the polymer having a phenyl group substituted with a vinyl group in the side chain include a copolymer represented by the following formula. (See Patent Document 1)

JP 2001-290271 A

Using a monomer having two or more polymerizable functional groups in the molecule represented by divinylbenzene, only one polymerizable functional group is selectively reacted, and the other polymerizable functional group is contained in a repeating unit. In the past, it has been considered difficult to remain. Therefore, the compounds exemplified above were also synthesized by a method of introducing a phenyl group substituted with a vinyl group into a side chain by a polymer reaction using chloromethylstyrene. However, since the above method is a polymer reaction, there is a problem that it is difficult to introduce a polymerizable functional group in an intended amount.
An object of the present invention is to provide a polymer having a set arbitrary amount of polymerizable functional groups in a repeating unit and a method for producing the same.

  As a result of intensive studies to solve the above-mentioned problems, the inventors have substituted the ortho position and / or the para position of the double bond substitution position conjugated with the aromatic ring with an organic group via an oxygen atom, The inventors have found that the reaction can be controlled by dramatically changing the reactivity of the conjugated double bond, and the present invention has been completed.

That is, the present invention
(1) A repeating unit having a double bond conjugated with an aromatic ring, and an oxygen atom at at least one of the ortho position and the para position of the substitution position of the double bond conjugated with the aromatic ring A polymer characterized by having an organic group via
(2) The polymer according to (1), wherein the repeating unit is a repeating unit derived from a double bond conjugated with an aromatic ring.

The present invention also provides:
(3) A polymer obtained by polymerizing a conjugated alkenyl monomer having a double bond conjugated with an aromatic ring, having a double bond conjugated with an aromatic ring in a repeating unit, and conjugated with the aromatic ring A polymer obtained by polymerizing a conjugated alkenyl monomer having an organic group via an oxygen atom at at least one of the ortho position and the para position of the substitution position of a double bond;
(4) The conjugated alkenyl monomer has two or more aromatic rings and a double bond conjugated to the aromatic ring, and at least one aromatic ring has an ortho position at a substitution position of the double bond and / or A conjugated alkenyl group having at least one organic group via an oxygen atom at the para position and having no organic group via an oxygen atom at the ortho-position and para-position of the double bond in at least one aromatic ring. Or an organic group having an oxygen atom at the ortho position of the substitution position of the double bond in at least one aromatic ring, having two or more aromatic rings and a double bond conjugated to the aromatic ring. It has at least one, and at least one aromatic ring does not have an organic group via an oxygen atom at the ortho position of the substitution position of the double bond, and has an organic group via an oxygen atom at the para position. Is a conjugated alkenyl monomer Polymer according to preparative characterized (3),
(5) The conjugated alkenyl monomer is represented by the formula (I)

（式中、Ａは、式（II）

Wherein A is the formula (II)

(In the formula (II), D represents an aromatic ring, R ₁₁ represents an alkenyl group represented by CH ₂ ═C (R ₂₁ ) —, and R ₂₁ represents a hydrogen atom or a C1-C12 hydrocarbon. Q represents 1 or 2, and when q is 2, R ₁₁ may be the same or different and have a bond on ring D.) R ₁ represents a divalent to tetravalent hydrocarbon group which may contain an oxygen atom, B represents an aromatic ring, and R ₂ represents CH ₂ ═C (R ₄ ) —. R ₄ represents a hydrogen atom or a C1-C12 hydrocarbon group, R ₃ represents an organic group via an oxygen atom, and k, m, and n are each independently 1 represents 1 or 2, l represents an integer of 1 to 3, p represents an integer of 0 or 1 to 3, k, l, m, n Or when p is 2 or more, A, B, R _1, R _2, or R ₃ together may each be the same or different. However, when m is 1 or m is 2, at least one of R ₂ substitution position and / or para position is bonded to at least R ₃ or aromatic ring B via an oxygen atom. When at least one of R ₁ is substituted and l is 1 or 1 is 2, an organic group via an oxygen atom is not substituted at the ortho and / or para position of R _11. When an organic group via an oxygen atom is substituted at the ortho position of R ₂ , an organic group via an oxygen atom may be present at the para position of R ₁₁ . The polymer according to (3) or (4), wherein the polymer is a compound represented by

Furthermore, the present invention provides
(6) It has an oxirane ring directly bonded to the aromatic ring in the repeating unit, and has an organic group via an oxygen atom in at least one of the ortho-position and para-position of the substitution position of the oxirane ring. A polymer characterized by
(7) The polymer according to (6), wherein the repeating unit is a repeating unit derived from a double bond conjugated to an aromatic ring.

  The polymer of the present invention is a polymer having a polymerizable functional group in the molecule by controlling the structure by a desired amount. Using polymerizable functional groups, it is also possible to crosslink with each other or with other polymers, or with other monomers, and apply to materials with unprecedented properties. Therefore, it can be said that the industrial utility value is high.

  The polymer of the present invention has a double bond conjugated with an aromatic ring in a repeating unit, but the method of the present invention for producing such a polymer is a double bond having a different reactivity conjugated with an aromatic ring. It is characterized by using an alkenyl monomer having 2 or more and anionic polymerization only at a highly reactive double bond.

  There are several possible methods for providing a difference in the reactivity of two or more polymerizable functional groups. After reacting with one polymerizable functional group, the remaining double bond is used for further polymerization, or A method of providing a difference in reactivity to such an extent that conversion to another functional group is possible is preferable.

In particular,
(1) It has two or more aromatic rings and a double bond conjugated with the aromatic ring, and at least one aromatic ring has an oxygen atom at the ortho position and / or para position of the substitution position of the double bond. A conjugated alkenyl monomer having at least one organic group and having no organic group via an oxygen atom at the ortho-position and para-position of the substitution position of the double bond in at least one aromatic ring, if necessary Anionic polymerization with an anionically polymerizable monomer,
(2) having two or more aromatic rings and a double bond conjugated with the aromatic ring, and at least one aromatic ring having an organic group via an oxygen atom at the ortho position of the substitution position of the double bond And at least one aromatic ring does not have an organic group via an oxygen atom at the ortho position of the substitution position of the double bond, and has an organic group via an oxygen atom at the para position. A method of anionic polymerization of a good conjugated alkenyl monomer together with a monomer capable of anionic polymerization as necessary,
Etc. can be preferably exemplified.

  That is, when an organic group via an oxygen atom is substituted at the ortho-position and / or para-position of the substitution position of the double bond conjugated with the aromatic ring, the reactivity of the double bond is determined in such an environment. This is a significant decrease compared to the reactivity of double bonds that are not present in the above, so that only one double bond is polymerized and the other double bond is polymerized until the polymerization of one double bond is completed. In addition, since it is not attacked by an anion at the polymerization terminal, a double bond can remain in the repeating unit.

  By using the above-described method, a polymer containing an amount that is obtained by arbitrarily setting a repeating unit having a double bond conjugated with an aromatic ring can be produced by controlling the structure. That is, a monomer with a narrow molecular weight distribution and a monodisperse structure controlled by performing anionic polymerization in an arbitrary polymerization mode such as a random copolymer or a block copolymer using monomers in an arbitrary ratio. Can be obtained.

  Since the polymer finally obtained by the above method has a double bond as a side chain (pendant), by newly adding a polymerization initiator such as an ionic polymerization initiator or a radical polymerization initiator. Further polymerization is possible. Moreover, it is also possible to convert a double bond into another functional group such as an epoxy group, and introduction of a functional group or condensation polymerization using an epoxy group or the like is also possible.

  The above-mentioned alkenyl monomer is not particularly limited as long as it has a structure satisfying the above-mentioned conditions. Specifically, the compound represented by the formula (I) is preferably exemplified. Can do.

  In formula (I), A represents a functional group represented by formula (II). In the formula (II), D represents an aromatic ring, specifically, an aromatic hydrocarbon group such as phenyl group or naphthyl group, pyridyl group, quinolinyl group, indolyl group, benzimidazole group, pyrrole group, pyrazole An aromatic heterocyclic group such as a group, an imidazole group, an isoxazole group, an oxazole group, a thiazole group and an isothiazole group can be exemplified.

R ₁₁ represents an alkenyl group represented by CH ₂ ═C (R ₂₁ ) —, and R ₂₁ represents a hydrogen atom or a methyl group, an ethyl group, an n-propyl group, an isopropyl group, an n-butyl group, C1-C12 hydrocarbon groups such as isobutyl group, s-butyl group, t-butyl group, n-pentyl group, n-hexyl group, phenyl group, benzyl group and 1-naphthyl group are represented. q represents 1 or 2, and when q is 2, R ₁₁ may be the same or different, and the substitution position is not particularly limited as long as the conditions described below are satisfied. In addition, the bond with R ₁ is on ring D. The bonding position of R ₁ on ring D is not particularly limited as long as the conditions described later are satisfied.

In the formula (I), R ₁ represents any one of divalent to tetravalent hydrocarbon groups which may contain an oxygen atom, and specific examples thereof include functional groups represented by the following formulae.

In formula (I), B represents an aromatic ring, and specific examples thereof include compounds similar to the functional groups exemplified for ring D.
R ₂ represents an alkenyl group represented by CH ₂ ═C (R ₄ ) —, R ₄ represents a hydrogen atom or a C1-C12 hydrocarbon group, and specifically, the same functionality as R ₂₁ Groups can be exemplified. n represents 1 or 2, and when n is 2, R ₂ may be the same or different. The replacement position is not particularly limited as long as the conditions described later are satisfied. R ₃ represents an organic group through an oxygen atom, specifically, a straight chain or branched chain such as a methoxy group, an ethoxy group, an n-propoxy group, an isopropoxy group, an n-butoxy group, or a t-butoxy group. Examples include an alkoxy group having a chain, an aryloxy group such as a phenoxy group, a naphthoxy group, and a pyridyloxy group, an aralkyloxy group such as a benzyloxy group, and the like. p represents any integer of 0 or 1 to 3, and when p is 2 or more, R ₃ may be the same or different. The replacement position is not particularly limited as long as the conditions described later are satisfied.
M represents 1 or 2, and when m is 2, B, R ₂ , and R ₃ may be the same or different.

The substitution positions of the substituents on ring B and ring D are subject to the following conditions.
Condition 1: An organic group through an oxygen atom exists at the ortho position and / or the para position of the substitution position of R ₂ . That is, at least R ₃ or R ₁ that binds the aromatic ring B through an oxygen atom must be substituted.
Condition 2: An organic group via an oxygen atom is not substituted at the ortho-position and para-position of R ₁₁ . However, when an organic group via an oxygen atom is substituted at the ortho position of R ₂ , a substituent via an oxygen atom may be substituted at the para position of R ₁₁ .
In condition 2, the organic group through an oxygen atom that may be substituted at the para-position of R ₁₁ is R ₁ bonded to the aromatic ring D through an oxygen atom, but other oxygen atoms are It may be an organic group.
On the aromatic rings B and D, as long as the conditions 1 and 2 are satisfied, a halogen atom such as a fluorine atom or a chloro atom, a hydrocarbon group such as a methyl group, an ethyl group, a phenyl group or a benzyl group, a nitro group, You may have substituents, such as a cyano group.

  Specific examples of the alkenyl monomer represented by the formula (I) include compounds represented by the following formulas.

  In the present invention, when the above-exemplified monomer is polymerized, it can be copolymerized with a monomer having a copolymerizable conjugated double bond. Examples of such a monomer include styrene, α- Methyl styrene, α-methyl-p-methyl styrene, p-methyl styrene, m-methyl styrene, o-methyl styrene, p-ethyl styrene, 2,4-dimethyl styrene, 2,5-dimethyl styrene, p-isopropyl styrene , 2,4,6-triisopropylstyrene, pt-butoxystyrene, pt-butoxy-α-methylstyrene, vinyl aromatic monomers such as mt-butoxystyrene, and heteroatoms such as vinylpyridine Containing aromatic vinyl compounds, vinyl ketone compounds such as methyl vinyl ketone and ethyl vinyl ketone, methyl acrylate, ethyl acrylate, etc. Conjugated dienes such as crylate, (meth) acrylic amide or (meth) acrylonitrile, 1,3-butadiene, isoprene, 2,3-dimethylbutadiene, 2-ethyl-1,3-butadiene, 1,3-pentadiene A monomer etc. can be illustrated. These compounds can be used as 1 type, or 2 or more types of mixtures, and can be made into block copolymerization, random copolymerization, etc.

  The polymerization method using the monomers and the like exemplified above in the present invention is not particularly limited as long as it is a method capable of identifying the reactivity of two or more functional groups, but an anionic polymerization method can be particularly preferably exemplified. .

  The polymerization is preferably performed in a temperature range of −100 ° C. or more and 20 ° C. or less. The lower limit of the polymerization temperature varies depending on the reactivity of the monomer used, but it needs to be at least a temperature at which the polymerization is completed. Usually, the polymerization proceeds even at −100 ° C. or lower, but the reaction rate becomes slow. Above 20 ° C., side reactions such as transfer reaction and termination reaction occur, making it difficult to obtain the desired polymer with controlled structure.

  In the present invention, the polymerization temperature does not have to be constant during the polymerization reaction, and may be increased at any rate as the polymerization reaction proceeds. For example, the monomer to be added can be divided into two parts and polymerized at a low temperature first, and then the temperature is raised and a monomer is further added to carry out the polymerization.

  Although the density | concentration with respect to the polymerization solvent of the monomer used for this invention is not restrict | limited in particular, Usually, it is the range of 10 to 40 weight%.

  The polymerization solvent used in the present invention is not particularly limited as long as it is a polar solvent that does not participate in the polymerization reaction and is compatible with the polymer. Specific examples include diethyl ether, tetrahydrofuran, dioxane, and trioxane. Tertiary amines such as ether compounds, tetraethylenediamine (TMEDA) and hexamethylphosphoric triamide (HMPA) can be exemplified, and tetrahydrofuran is particularly preferable. Moreover, these solvent can be used individually by 1 type or as a 2 or more types of mixed solvent.

  Moreover, even if it is an aliphatic, aromatic, or alicyclic hydrocarbon compound with low polarity, if it is comparatively compatible with a polymer, it can be used by combining with a polar solvent. Specifically, a combination of a tertiary amine of toluene and TMEDA or HMPA can be exemplified, and in this case, it is preferable to use about 1 to 10 equivalents relative to an initiator using a tertiary amine. A combination of ether solvents can also be used. In this case, it is preferable to use 50% by volume or less of toluene with respect to the ether solvent.

  The polymerization initiator used in the present invention is composed of an alkali metal or an organic alkali metal, and examples of the alkali metal include lithium, sodium, potassium, cesium, and the like. Can be used, specifically, ethyl lithium, n-butyl lithium, sec-butyl lithium, t-butyl lithium, ethyl sodium, lithium biphenyl, lithium naphthalene, lithium triphenyl. Sodium naphthalene, potassium naphthalene, α-methylstyrene sodium dianion, 1,1-diphenylhexyl lithium, 1,1-diphenyl-3-methylpentyl lithium, 1,4-dilithio-2-butene, 1,6-dilithio Hexane, Squirrel styryl lithium, cumyl potassium, can be given Kumiruseshiumu etc., these compounds may be used alone or in combination of two or more.

  In the method for producing a polymer of the present invention, an additive comprising an alkali metal salt or alkaline earth metal salt of a mineral acid or the like can be added at the start of polymerization or during polymerization, if necessary. Specific examples of such additives include mineral salts and halides such as sodium, potassium, lithium, barium, magnesium sulfate, nitrate, borate, and more specifically. Examples include lithium, barium chloride, bromide, iodide, lithium borate, magnesium nitrate, sodium chloride, potassium chloride, and the like. Among these, lithium halides such as lithium chloride, lithium bromide Preference is given to using lithium iodide or lithium fluoride, in particular lithium chloride.

  In addition, since the double bond conjugated with the aromatic ring contained in the repeating unit has reactivity, by performing further polymerization reaction or oxidation by itself, an oxirane ring, a formyl group, a carboxyl group, etc. Can be converted to other functional groups.

  EXAMPLES Hereinafter, although this invention is demonstrated further in detail using an Example, this invention is not limited to an Example.

(Reference Example 1)
(1) Synthesis of monomer 1

4.53 g (186 mmol) of Mg was weighed into a nitrogen-substituted 500 ml eggplant type flask, 70 ml of dehydrated Et ₂ O was added and stirred well, and then a small amount of 1,2-dibromoethane was added to activate Mg. To this, 19.0 g (124 mmol) of p-chloromethylstyrene dissolved in 30 ml of dehydrated diethyl ether (Et ₂ O) was added dropwise at 0 ° C. After stirring for 3 hours at room temperature, it was confirmed by GC that the reaction had progressed quantitatively.

After putting 63 ml (612 mmol) of 1,3-dibromopropane into a nitrogen-substituted 500 ml eggplant type flask, the Grignard reagent prepared by the above method was transferred to a dropping funnel and dropped at 0 ° C. Further, 20 ml of purified tetrahydrofuran (THF) was added dropwise at 0 ° C., and the mixture was stirred at room temperature for 8 hours. The completion of the reaction was confirmed by GC, and 2N-HCl was added until it became weakly acidic to stop the reaction. Thereafter, the aqueous layer was extracted three times with 40 ml of CHCl ₃ and the organic layer was dried over MgSO ₄ . After distilling off the solvent under reduced pressure, 1,3-dibromopropane was distilled off in the presence of methylene blue, and the residue was purified by column chromatography (hexane) to give 24.9 g of p- (4-bromobutyl) styrene as a colorless transparent liquid ( 104 mmol). (Yield 84%)

A 200 ml eggplant type flask is weighed with 3.26 g (24.0 mmol) of 2′-hydroxyacetophenone, 5.00 g (20.9 mmol) of p- (4-bromobutyl) styrene, and 50 ml of dimethylformamide (DMF). 576 g (24.0 mmol) was added little by little at 0 ° C., and the mixture was stirred overnight at room temperature. The reaction was stopped by adding water, the aqueous layer was extracted 3 times with 50 ml of Et ₂ O, and the organic layer was dried over MgSO ₄ . Thereafter, purification by column chromatography (hexane: ethyl acetate = 8: 2) gave 5.20 g (17.7 mmol) of 2 ′-(4- (4-vinylphenyl) butoxy) acetophenone as a colorless transparent liquid. It was. (Yield 85%)

A 200 ml two-necked eggplant-type flask purged with nitrogen was charged with 2.86 g (22.1 mmol) of CH ₃ PPh ₃ Br, 7.85 g (25.5 mmol) of t-butoxypotassium (t-BuOK), and 30 ml of THF, and stirred at room temperature for 30 minutes. did. Thereafter, a solution of 2 ′-(4- (4-vinylphenyl) butoxy) acetophenone (5.20 g, 17.7 mmol) in THF (20 ml) was added dropwise at 0 ° C., and the mixture was stirred at room temperature overnight. The reaction was stopped by adding water, the aqueous layer was extracted 3 times with 50 ml of Et ₂ O, and the organic layer was dried over MgSO ₄ . Thereafter, the solvent was distilled off under reduced pressure, and the residue was purified by column chromatography (hexane: ethyl acetate = 30: 1) to give a colorless transparent liquid, 2 ′-(4- (4-vinylphenyl) butoxy) -α-methylstyrene 3 Obtained .73 g (12.8 mmol). (Yield 72%)
Result of elemental analysis Calculated value C: 86.26, H: 8.27, O: 5.47 Measured value C: 86.19, H: 8.32, O: 5.49

(2) Synthesis of monomer 2 Except that 4-hydroxyacetophenone is used as a raw material and the column chromatography developing solvent in the final production step is hexane / benzene = 8/2 and recrystallized with methanol. It carried out like the synthesis | combination of the monomer-1 and obtained 4 '-(4- (4-vinylphenyl) butoxy)-(alpha) -methylstyrene by 75% of a yield as a colorless and transparent liquid. (Melting point: 51.2 ° C)

(3) Synthesis of monomer-3)
As a raw material, 3-hydroxyacetophenone is used, and the column chromatography developing solvent used in the final production step is the same as that for monomer-1, except that hexane / benzene = 8/2 is used. 3 ′-(4- (4-vinylphenyl) butoxy) -α-methylstyrene was obtained in a yield of 66%.

  Using a breakable seal, s-BuLi (0.02M) was used as an anionic polymerization initiator, monomer 1 or 2 was polymerized at -78 ° C in a solvent THF, and the reaction was stopped according to a conventional method. After-treatment was performed. The amounts of reagents used are summarized in Table 1. THF was used so that the monomer concentration was 5% by volume.

(Comparative Example 1)
The reaction was performed in the same manner as in Example 2 except that the monomer 3 was used. The results are summarized in Table 1. The reaction yield was 66% and gelled.

When monomers 1 and 2 having a functional group via an oxygen atom at the ortho position or para position of the alkenyl group are used, the reaction proceeds with such an alkenyl group having no functional group. confirmed. From Table 1, when monomers 1 and 2 are used, the reaction is controlled, and a monomodal and narrowly dispersed polymer is obtained, whereas the functionality of the alkenyl group at the meta position via an oxygen atom is obtained. The monomer 3 having a group was gelled and the reaction could not be controlled.
Further, also in the monomer 2 having a functional group via an oxygen atom at the para position, when the polymerization time was lengthened, the product on the high molecular weight side tended to increase.

Monomer 1 (2.27 mmol) was polymerized with s-BuLi (0.0476 mmol) for 30 minutes in THF at −78 ° C. using a breakable seal, and then styrene (6.56 mmol) was added for 5 minutes. Polymerization was conducted, and the reaction was stopped according to a conventional method, followed by post-treatment. The reaction yield was 100%. The calculated molecular weight is 28.4 × 10 ³ (of which the molecular weight of the polymer of monomer 1 is 14.0 × 10 ³ ), and the measured value from NMR is 28.7 × 10 ³ (of which the single amount The molecular weight of the polymer of the body 1 was 13.77 × 10 ³ ), which was in good agreement. The obtained block copolymer was monodispersed and Mw / Mn = 1.02.

Using a breakable seal, styrene (6.24 mmol) was polymerized with s-BuLi (0.0404 mmol) in THF at −78 ° C. for 5 minutes, and then monomer 1 (2.46 mmol) was polymerized for 30 minutes. The reaction was stopped and post-treatment was performed according to a conventional method. The reaction yield was 100%. The calculated molecular weight is 34.0 × 10 ³ (of which the molecular weight of the polymer of monomer 1 is 16.1 × 10 ³ ), and the measured value from NMR is 35.3 × 10 ³ (of which The molecular weight of the polymer of monomer 1 was 17.0 × 10 ³ ), which was in good agreement. The obtained block copolymer was monodispersed and Mw / Mn = 1.04.

  Under a nitrogen atmosphere, 2.0 g (6.8 mmol) of 4- [4- (2-isopropenylphenoxy) butyl] styrene was dissolved in 18 g of THF. To this solution, 0.41 g (0.53 mmol) of an s-BuLi solution was added at −40 ° C., and the mixture was stirred at −40 ° C. for 30 minutes. Methanol was added to the obtained reaction mixture to stop the reaction, and 1.0N hydrochloric acid was added. The organic layer taken out after washing with water was concentrated to dryness to obtain 1.9 g of poly (4- [4- (2-isopropenylphenoxy) butyl] styrene) (Polymer A) as a colorless transparent oil (yield) 95%). The number average molecular weight (Mn) of the polymer A was 2900, the weight average molecular weight (Mw) was 3200, and dispersion degree (Mw / Mn) was 1.09.

  Under a nitrogen atmosphere, 1.00 g (0.33 mmol) of Polymer A was added to a mixture of 7.71 g of methylene chloride and 10 g of a 0.5N aqueous sodium hydrogen carbonate solution. To this solution, 0.66 g (3.33 mmol) of m-chloroperbenzoic acid was added and stirred at room temperature for 6 hours. To the obtained reaction mixture, 0.5N aqueous sodium hydrogen carbonate solution was added, and the organic layer taken out after washing with water was concentrated and dried to obtain 0.92 g of a colorless transparent oily substance (polymer B) (yield). 92%). Polymer B had an Mn of 3200, an Mw of 3400, and a dispersity of 1.10.

In the ¹ H NMR spectrum of polymer B, the signal attributed to methylene of the vinyl group observed in polymer A almost disappeared (5.08 ppm), and a new signal appeared at 2.84 ppm. Was poly (4- {4- [2- (2-methyloxylanyl) phenoxy] butyl} styrene) in which the vinyl group of polymer A was epoxidized, and was found to have an epoxidation rate of 99% or more.

Claims (2)

Formula (I '')

(Wherein R ₁₁ represents a divalent hydrocarbon group containing an oxygen atom, R ₂₁₁₁ represents a hydrogen atom or a C1 to C12 hydrocarbon group, and R ₄₁ represents a hydrogen atom or a C1 to C12 carbon atom. Represents a hydrogen group.
_{However, CH 2 = C (R 41} ) on the B-ring - in the ortho or para position of the substitution positions, R ₁₁ linked via an oxygen atom is substituted, _CH on D ring 2 = _{C (R 211} R ₁₁ bonded through an oxygen atom is not substituted at the ortho- or para-position of)- . Obtained by polymerizing a conjugated alkenyl monomer represented by
Has repeating units conjugated with an aromatic ring double bond, aromatic ring conjugated with the double bond of the substitution position of ortho, or in any one location para position via an oxygen atom bond A polymer characterized by having an organic group. The polymer according to claim 1, wherein a double bond conjugated with an aromatic ring is oxirane cyclized.