WO2011016226A1 - 高分子量共重合体 - Google Patents
高分子量共重合体 Download PDFInfo
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- WO2011016226A1 WO2011016226A1 PCT/JP2010/004894 JP2010004894W WO2011016226A1 WO 2011016226 A1 WO2011016226 A1 WO 2011016226A1 JP 2010004894 W JP2010004894 W JP 2010004894W WO 2011016226 A1 WO2011016226 A1 WO 2011016226A1
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- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F212/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring
- C08F212/02—Monomers containing only one unsaturated aliphatic radical
- C08F212/04—Monomers containing only one unsaturated aliphatic radical containing one ring
- C08F212/14—Monomers containing only one unsaturated aliphatic radical containing one ring substituted by heteroatoms or groups containing heteroatoms
- C08F212/22—Oxygen
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- C08F297/00—Macromolecular compounds obtained by successively polymerising different monomer systems using a catalyst of the ionic or coordination type without deactivating the intermediate polymer
- C08F297/02—Macromolecular compounds obtained by successively polymerising different monomer systems using a catalyst of the ionic or coordination type without deactivating the intermediate polymer using a catalyst of the anionic type
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- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/10—Esters
- C08F220/12—Esters of monohydric alcohols or phenols
- C08F220/16—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms
- C08F220/18—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms with acrylic or methacrylic acids
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- C09J133/00—Adhesives based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Adhesives based on derivatives of such polymers
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- C08F12/00—Homopolymers and copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring
- C08F12/02—Monomers containing only one unsaturated aliphatic radical
- C08F12/04—Monomers containing only one unsaturated aliphatic radical containing one ring
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- C08F12/00—Homopolymers and copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring
- C08F12/02—Monomers containing only one unsaturated aliphatic radical
- C08F12/04—Monomers containing only one unsaturated aliphatic radical containing one ring
- C08F12/14—Monomers containing only one unsaturated aliphatic radical containing one ring substituted by hetero atoms or groups containing heteroatoms
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- C08F12/24—Phenols or alcohols
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- C08F2/00—Processes of polymerisation
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- C08F4/00—Polymerisation catalysts
- C08F4/42—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors
- C08F4/44—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors selected from light metals, zinc, cadmium, mercury, copper, silver, gold, boron, gallium, indium, thallium, rare earths or actinides
- C08F4/46—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors selected from light metals, zinc, cadmium, mercury, copper, silver, gold, boron, gallium, indium, thallium, rare earths or actinides selected from alkali metals
- C08F4/48—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors selected from light metals, zinc, cadmium, mercury, copper, silver, gold, boron, gallium, indium, thallium, rare earths or actinides selected from alkali metals selected from lithium, rubidium, caesium or francium
Definitions
- the present invention relates to a copolymer suitable for an insulating resin composition used for a surface protective film such as a semiconductor element, an interlayer insulating film, a chip stacking adhesive, and the like.
- the structural unit (A1) represented by the following formula (1) is represented by 10 to 99 mol% and the following formula (2).
- a copolymer (A) having 90 to 1 mol% of the structural unit (A2) (provided that the total of all structural units constituting the copolymer (A) is 100 mol%) is known. (See Patent Document 1)
- R 11 and R 33 each independently represents an alkyl group having 1 to 4 carbon atoms, an alkoxy group, or an aryl group
- R 22 and R 44 each independently represent a hydrogen atom or a methyl group.
- M1 represents an integer of 1 to 3
- n1 and k1 each independently represents an integer of 0 to 3
- An object of this invention is to provide the copolymer for hardened
- the present inventors have combined the repeating unit of the aryl moiety and the repeating unit of the acrylate ester block in a block, and further having a high molecular weight of 50,000 or more, the above characteristics. It was found that a polymer satisfying the above can be obtained, and the present invention has been completed.
- R 1 , R 2 , and R 3 each independently represents a hydrogen atom or a methyl group
- R 4 represents an alkyl group or a cycloalkyl group optionally having a hydroxy group
- R 5 Represents a hydrogen atom or a C 1 -C 6 alkyl group
- m, n, and k represent the molar ratio of each repeating unit
- m represents a positive number of 0 or more and less than 1
- n and k are each independently
- the weight average molecular weight is in the range of 50,000 to 200,000.
- the repeating unit represented by the formula (I) and the formula (II) and the repeating unit represented by the formula (III) are bonded together by a block
- the repeating unit represented by the formula (I) and the formula (II) is that the repeating unit represented by the formula (I) and the repeating unit represented by the formula (II) are randomly bonded.
- the ratio (Mw / Mn) of the weight average molecular weight (Mw) to the number average molecular weight (Mn) is in the range of 1.01 to 1.50, any of (1) to (3) Relates to the copolymer according to the above.
- the copolymer of the present invention comprises repeating units represented by formula (I), formula (II) and formula (III), and has a weight average molecular weight in the range of 50,000 to 200,000. To do.
- R 1 represents a hydrogen atom or a methyl group.
- R 5 represents a hydrogen atom or a C 1 -C 6 alkyl group.
- alkyl group examples include methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, s- Examples include a butyl group, a t-butyl group, an n-pentyl group, an isopentyl group, an s-pentyl group, a t-pentyl group, a neopentyl group, and an n-hexyl group.
- R 2 represents a hydrogen atom or a methyl group.
- R 3 represents a hydrogen atom or a methyl group.
- R 4 represents an alkyl group or a cycloalkyl group which may have a hydroxy group, and specifically includes a methyl group, an ethyl group, an n-propyl group, an isopropyl group, an n-butyl group, an isobutyl group, s -Butyl group, t-butyl group, n-pentyl group, isopentyl group, s-pentyl group, t-pentyl group, neopentyl group, n-hexyl group, n-heptyl group, n-octyl group, n-nonyl group, Or an alkyl group, cyclopropyl group, cyclobutyl group which may have a hydroxy group such as n-decyl group, 2-hydroxyethyl group, 3-hydroxypropyl group, or 2,2-dimethyl-3-hydroxypropyl group , Cyclopentyl group,
- the bonding mode of the repeating unit represented by the formula (I), the repeating unit represented by the formula (II), and the repeating unit represented by the formula (III) is not particularly limited. , Block bonds, alternating bonds, graft bonds, and the like. Especially, it is preferable that the repeating unit (B12) represented by Formula (I) and Formula (II) and the repeating unit (B3) represented by Formula (III) are block bonds.
- the bonding mode of the repeating unit (B1) represented by the formula (I) and the repeating unit (B2) represented by the formula (II) included in (B12) is not particularly limited.
- Block bonds, alternating bonds, graft bonds and the like can be exemplified, and random bonds can be particularly preferably exemplified.
- the molar ratio of each repeating unit (B1) to (B3) is not particularly limited, but (B1) + (B2) / (B3) can be preferably exemplified by a range of 90/10 to 60/40.
- B1) / (B2) can preferably be in the range of 90/10 to 10/90.
- the weight average molecular weight of the copolymer of the present invention is in the range of 50,000 to 200,000, but is preferably 70,000 to 200,000, and particularly preferably in the range of 70,000 to 160,000.
- the ratio (Mw / Mn) of the weight average molecular weight (Mw) to the number average molecular weight (Mn) of the copolymer of the present invention is preferably in the range of 1.01 to 2.50, more preferably 1.01 to 1.50. The range of is preferable.
- radical polymerization, anionic polymerization, cationic polymerization, living A known method such as polymerization can be used.
- Specific examples of the raw material monomer used in the production of the present invention include compounds containing double bonds represented by the following formulas (IV) to (VI) corresponding to formulas (I) to (III). Can do.
- R 1 to R 4 represent the same meaning as described above.
- Specific examples of the compound represented by the formula (IV) include styrene, ⁇ -methylstyrene, 4-methylstyrene, 4-ethylstyrene, 4-n-butylstyrene, 4-t-butylstyrene and the like. be able to.
- Specific examples of the compound represented by the formula (V) include 4-hydroxystyrene, 3-hydroxystyrene, 4-hydroxy- ⁇ -methylstyrene, 3-hydroxy- ⁇ -methylstyrene, and the like.
- Specific examples of the compound represented by the formula (VI) include methyl acrylate, ethyl acrylate, n-propyl acrylate, isopropyl acrylate, n-butyl acrylate, isobutyl acrylate, s-butyl acrylate, acrylic T-butyl acid, n-pentyl acrylate, n-hexyl acrylate, n-heptyl acrylate, methyl methacrylate, ethyl methacrylate, n-propyl methacrylate, isopropyl methacrylate, n-butyl methacrylate, isobutyl methacrylate S-butyl methacrylate, t-butyl methacrylate, n-pentyl methacrylate, n-hexyl methacrylate, n-heptyl methacrylate and the like.
- repeating units (I) to (III) constituting the copolymer of the present invention include the combinations shown below.
- Each repeating unit is represented by a corresponding monomer.
- n-BuLi n-butyllithium
- the mixture was stirred at the same temperature for 60 minutes, and then methanol was added to stop the reaction.
- the reaction solution was measured by gas chromatography, but PTBST and MMA were not observed.
- the reaction mixture was concentrated, ethyl acetate was added, and the mixture was washed with water.
- the organic layer was concentrated, diluted with THF, the THF diluted solution was added dropwise to methanol with stirring to precipitate a polymer, stirred for 1 hour, filtered, and dried under reduced pressure.
- the dried polymer (100 g) was dissolved in a toluene / ethanol (35/65 wt%) mixed solvent, 25% concentrated hydrochloric acid was added, and the mixture was heated and stirred at 70 ° C. for 4 hours.
- n-BuLi solution (1.67 g; 4 mmol) was added to a THF (500 g) solution of 2-mercaptothiazoline (0.12 g: 1 mmol) at room temperature, and the mixture was stirred for 15 minutes. Subsequently, the mixture was cooled to ⁇ 40 ° C., an n-BuLi solution (0.68 g; 2 mmol) was added, PTBST (31.03 g; 176 mmol), styrene (hereinafter abbreviated as ST) (18.73 g; 180 mmol) and dibutyl magnesium.
- ST styrene
- n-BuLi solution (4.28 g; 10 mmol) was added to a THF (1350 g) solution of 2-mercaptothiazoline (0.36 g: 3 mmol) at room temperature, and the mixture was stirred for 15 minutes. Subsequently, the mixture was cooled to ⁇ 40 ° C., n-BuLi solution (1.16 g; 3 mmol) was added, PTBST (84.47 g; 479 mmol), ST (50.02 g; 480 mmol) and dibutylmagnesium hexane solution (2.13 g).
- n-BuLi solution (4.89 g; 12 mmol) was added to a THF (1340 g) solution of 2-mercaptothiazoline (0.36 g: 3 mmol) at room temperature, and the mixture was stirred for 15 minutes. Subsequently, the mixture was cooled to ⁇ 40 ° C., n-BuLi solution (0.94 g; 2 mmol) was added, PTBST (84.48 g; 479 mmol), ST (49.94 g; 480 mmol) and dibutylmagnesium hexane solution (2.00 g).
- n-BuLi solution (1.57 g; 4 mmol) was added to a THF (500 g) solution of 2-mercaptothiazoline (0.12 g: 1 mmol) at room temperature, and the mixture was stirred for 15 minutes.
- PEES p- (1-ethoxyethoxy) styrene
- diphenylethylene (0.35 g; 2 mmol) was added and stirred for 10 minutes. Thereafter, the solution was cooled to ⁇ 50 ° C., a solution obtained by adding a diethyl zinc hexane solution (0.61 g; 1 mmol) to a 3.71% lithium chloride THF solution (9.26 g: 8 mmol) was added dropwise over 1 minute, and MMA ( 12.36 g; 123 mmol) and a solution of diethyl zinc hexane (0.64 g; 1 mmol) in THF (10 g) were added dropwise over 10 minutes, and the mixture was stirred at the same temperature for 60 minutes, and methanol was added to stop the reaction.
- the reaction solution was measured by gas chromatography, but PEES, ST and MMA were not observed. Then, concentrated hydrochloric acid (6.98 g; 69 mmol) was added, and after stirring at 50 ° C. for 1 hour, triethylamine (5.22 g; 52 mmol) was added, and acetic acid (1.86 g; 31 mmol) was further added. Triethylamine / hydrochloride was filtered, concentrated, water was added, and the mixture was stirred for 1 hour, and then the precipitated polymer was filtered. The obtained polymer was dissolved in a mixed solvent of THF (450 g) and ethyl acetate (500 g), and washed with water.
- THF 450 g
- ethyl acetate 500 g
- n-BuLi solution (4.89 g; 12 mmol) was added to a THF (700 g) solution of 2-mercaptothiazoline (0.23 g: 2 mmol) at room temperature, and the mixture was stirred for 60 minutes. Subsequently, the mixture was cooled to ⁇ 40 ° C., n-BuLi solution (2.03 g; 5 mmol) was added, PTBST (22.63 g; 128 mmol), ST (40.41 g; 388 mmol) and dibutyl magnesium hexane solution (0.88 g).
- n-BuLi solution (1.99 g; 5 mmol) was added to THF (750 g) of 2-mercaptothiazoline (0.23 g: 2 mmol) at room temperature, and the mixture was stirred for 60 minutes. Subsequently, the mixture was cooled to ⁇ 40 ° C., n-BuLi solution (0.47 g; 1 mmol) was added, PTBST (62.06 g; 352 mmol), ST (12.15 g; 117 mmol) and dibutyl magnesium hexane solution (0.89 g).
- n-BuLi solution (2.89 g; 7 mmol) was added to THF (700 g) of 2-mercaptothiazoline (0.14 g: 1.2 mmol) at room temperature, and the mixture was stirred for 30 minutes.
- the reaction solution was measured by gas chromatography, but PTBST, pt-butylstyrene and MMA were not observed. Thereafter, the polymer obtained by the same treatment as in Example 1 was reacted in the same manner as in Example 1.
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Abstract
Description
本発明は、チップ積層用接着剤等として耐熱性、耐クラック性、高温接着性、密着性等の特性が満足のいく硬化物用の共重合体を提供することを目的とする。
(1)式(I)、式(II)、及び式(III)
(2)式(I)及び式(II)で表される繰り返し単位と式(III)で表される繰り返し単位が、ブロックで結合していることを特徴とする(1)に記載の共重合体に関し、
(3)式(I)及び式(II)で表される繰り返し単位が、式(I)で表される繰り返し単位と式(II)で表される繰り返し単位がランダムで結合していることを特徴とする(2)に記載の共重合体に関し、
(4)重量平均分子量(Mw)と数平均分子量(Mn)の比(Mw/Mn)が、1.01~1.50の範囲であることを特徴とする(1)~(3)のいずれかに記載の共重合体に関する 。
式(I)中、R1は、水素原子またはメチル基を表す。
R5は水素原子またはC1~C6のアルキル基を表し、アルキル基としては、具体的にはメチル基、エチル基、n-プロピル基、イソプロピル基、n-ブチル基、イソブチル基、s-ブチル基、t-ブチル基、n-ペンチル基、イソペンチル基、s-ペンチル基、t-ペンチル基、ネオペンチル基、n-ヘキシル基等を例示することができる。
式(II)中、R2は、水素原子またはメチル基を表す。
式(III)中、R3は、水素原子またはメチル基を表す。
R4は、ヒドロキシ基を有していてもよいアルキル基またはシクロアルキル基を表し、具体的には、メチル基、エチル基、n-プロピル基、イソプロピル基、n-ブチル基、イソブチル基、s-ブチル基、t-ブチル基、n-ペンチル基、イソペンチル基、s-ペンチル基、t-ペンチル基、ネオペンチル基、n-ヘキシル基、n-ヘプチル基、n-オクチル基、n-ノニル基、またはn-デシル基、2-ヒドロキシエチル基、3-ヒドロキシプロピル基、または2,2-ジメチル-3-ヒドロキシプロピル基等のヒドロキシ基を有していてもよいアルキル基、シクロプロピル基、シクロブチル基、シクロペンチル基、シクロヘキシル基、1-エチルシクロヘキシル基、ノルボルニル基、ジシクロペンタニル基、トリシクロデカニル基、1-アダマンチル基、またはイソボロニル基等のシクロアルキル基を例示することができる。
中でも、式(I)及び式(II)で表される繰り返し単位(B12)と式(III)で表される繰り返し単位(B3)がブロック結合であるのが好ましい。(B12)に含まれる式(I)で表される繰り返し単位(B1)及び式(II)で表される繰り返し単位(B2)の結合様式は、特に限定されず、具体的には、ランダム結合、ブロック結合、交互結合、またはグラフト結合等を例示することができるが、特にランダム結合を好ましく例示することができる。
各繰り返し単位(B1)~(B3)のモル比は特に制限されないが、(B1)+(B2)/(B3)は、90/10~60/40の範囲を好ましく例示することができ、(B1)/(B2)は、90/10~10/90の範囲を好ましく例示することができる。
本発明の共重合体の重量平均分子量は、50,000~200,000の範囲ではあるが、70,000~200,000が好ましく、中でも70,000~160,000の範囲が特に好ましい。
本発明の共重合体の重量平均分子量(Mw)と数平均分子量(Mn)との比(Mw/Mn)は、1.01~2.50の範囲が好ましく、さらに1.01~1.50の範囲が好ましい。
本発明の製造に用いられる原料の単量体として、具体的には、式(I)~(III)に対応する下記式(IV)~(VI)に示す二重結合含有化合物を例示することができる。
式(V)で表される化合物として具体的には、4-ヒドロキシスチレン、3-ヒドロキシスチレン、4-ヒドロキシ-α-メチルスチレン、3-ヒドロキシ-α-メチルスチレン等を例示することができる。
式(VI)で表される化合物として具体的には、アクリル酸メチル、アクリル酸エチル、アクリル酸n-プロピル、アクリル酸イソプロピル、アクリル酸n-ブチル、アクリル酸イソブチル、アクリル酸s-ブチル、アクリル酸t-ブチル、アクリル酸n-ペンチル、アクリル酸n-ヘキシル、アクリル酸n-ヘプチル、メタクリル酸メチル、メタクリル酸エチル、メタクリル酸n-プロピル、メタクリル酸イソプロピル、メタクリル酸n-ブチル、メタクリル酸イソブチル、メタクリル酸s-ブチル、メタクリル酸t-ブチル、メタクリル酸n-ペンチル、メタクリル酸n-ヘキシル、メタクリル酸n-ヘプチル等を例示することができる。
スチレン/4-ヒドロキシスチレン/アクリル酸メチル、スチレン/4-ヒドロキシスチレン/アクリル酸エチル、スチレン/4-ヒドロキシスチレン/アクリル酸t-ブチル、α-メチルスチレン/4-ヒドロキシスチレン/アクリル酸メチル、α-メチルスチレン/4-ヒドロキシスチレン/アクリル酸エチル、α-メチルスチレン/4-ヒドロキシスチレン/アクリル酸t-ブチル、スチレン/α-メチル-4-ヒドロキシスチレン/アクリル酸メチル、スチレン/α-メチル-4-ヒドロキシスチレン/アクリル酸エチル、スチレン/α-メチル-4-ヒドロキシスチレン/アクリル酸t-ブチル、スチレン/3-ヒドロキシスチレン/アクリル酸メチル、スチレン/3-ヒドロキシスチレン/アクリル酸エチル、スチレン/3-ヒドロキシスチレン/アクリル酸t-ブチル、スチレン/4-ヒドロキシスチレン/メタクリル酸メチル、スチレン/4-ヒドロキシスチレン/メタクリル酸エチル、スチレン/4-ヒドロキシスチレン/メタクリル酸t-ブチル、α-メチルスチレン/4-ヒドロキシスチレン/メタクリル酸メチル、α-メチルスチレン/4-ヒドロキシスチレン/メタクリル酸エチル、α-メチルスチレン/4-ヒドロキシスチレン/メタクリル酸t-ブチル、スチレン/α-メチル-4-ヒドロキシスチレン/メタクリル酸メチル、スチレン/α-メチル-4-ヒドロキシスチレン/メタクリル酸エチル、スチレン/α-メチル-4-ヒドロキシスチレン/メタクリル酸t-ブチル、スチレン/3-ヒドロキシスチレン/メタクリル酸メチル、スチレン/3-ヒドロキシスチレン/メタクリル酸エチル、スチレン/3-ヒドロキシスチレン/メタクリル酸t-ブチル、p-メチルスチレン/4-ヒドロキシスチレン/アクリル酸メチル、p-エチルスチレン/4-ヒドロキシスチレン/アクリル酸メチル、p-t-ブチルスチレン/4-ヒドロキシスチレン/アクリル酸メチル、p-t-ブチルスチレン/4-ヒドロキシスチレン/アクリル酸エチル等を例示することができる。
得られたポリマーをGPC分析した結果は、Mw=89500、分散度=1.17であり、13C-NMRで組成比を分析した結果は、p-ヒドロキシスチレン(以下PHSと略す)/MMA(モル比)=80/20であった。
その結果得られたポリマーをGPC分析したところ、Mw=85300、分散度=1.19であり、13C-NMRで組成比を分析した結果は、PHS/ST/MMA(モル比)=41/41/18であった。
得られたポリマーをGPC分析した結果は、Mw=70000、分散度=1.08であり、13C-NMRで組成比を分析した結果は、PHS/ST/MMA(モル比)=41/42/17であった。
得られたポリマーをGPC分析した結果は、Mw=90400、分散度=1.08であり、13C-NMRで組成比を分析した結果は、PHS/ST/MMA(モル比)=44/44/12あった。
得られたポリマーをGPC分析した結果は、Mw=75000、分散度=1.36であり、13C-NMRで組成比を分析した結果は、PHS/ST/MMA(モル比)=42/41/17であった。
得られたポリマーをGPC分析した結果は、Mw=104500、分散度=1.07であり、13C-NMRで組成比を分析した結果は、PHS/ST/MMA(モル比)=21/60/19であった。
得られたポリマーをGPC分析した結果は、Mw=123500、分散度=1.07であり、13C-NMRで組成比を分析した結果は、PHS/ST/MMA(モル比)=61/20/19であった。
得られたポリマーをGPC分析した結果は、Mw=153600、分散度=1.18であり、13C-NMRで組成比を分析した結果は、PHS/p-t-ブチルスチレン/MMA(モル比)=32/47/21であった。
Claims (4)
- 式(I)及び式(II)で表される繰り返し単位と式(III)で表される繰り返し単位が、ブロックで結合していることを特徴とする請求項1に記載の共重合体。
- 式(I)及び式(II)で表される繰り返し単位が、式(I)で表される繰り返し単位と式(II)で表される繰り返し単位がランダムで結合していることを特徴とする請求項2に記載の共重合体。
- 重量平均分子量(Mw)と数平均分子量(Mn)の比(Mw/Mn)が、1.01~1.50の範囲であることを特徴とする請求項1~3のいずれかに記載の共重合体。
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KR1020127001923A KR101380076B1 (ko) | 2009-08-04 | 2010-08-04 | 고분자량 공중합체 |
EP10806226.6A EP2447291B1 (en) | 2009-08-04 | 2010-08-04 | High-molecular-weight copolymer |
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EP2447291B1 (en) | 2015-04-08 |
EP2447291A1 (en) | 2012-05-02 |
KR20120031229A (ko) | 2012-03-30 |
JPWO2011016226A1 (ja) | 2013-01-10 |
CN102471410A (zh) | 2012-05-23 |
KR101380076B1 (ko) | 2014-04-01 |
JP5564047B2 (ja) | 2014-07-30 |
CN102471410B (zh) | 2015-04-08 |
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