WO2010119970A1 - チオカルボニル化合物並びにこれを用いた重合体の製造方法およびその重合体 - Google Patents
チオカルボニル化合物並びにこれを用いた重合体の製造方法およびその重合体 Download PDFInfo
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- WO2010119970A1 WO2010119970A1 PCT/JP2010/056891 JP2010056891W WO2010119970A1 WO 2010119970 A1 WO2010119970 A1 WO 2010119970A1 JP 2010056891 W JP2010056891 W JP 2010056891W WO 2010119970 A1 WO2010119970 A1 WO 2010119970A1
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- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F2/00—Processes of polymerisation
- C08F2/38—Polymerisation using regulators, e.g. chain terminating agents, e.g. telomerisation
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- the present invention relates to a thiocarbonyl compound, a method for producing a polymer using the same, and a polymer thereof, and more specifically, a thiocarbonyl compound represented by the following formula (a) and a method for producing a polymer using the same. And a polymer thereof.
- n is 1 to 6
- Z is an organic group selected from substituted or unsubstituted aryl and substituted or unsubstituted heteroaryl.
- thiocarbonyl compounds can be used as reversible addition-fragmentation chain transfer (RAFT) agents.
- the polymerization method using the RAFT agent is a living radical polymerization, and exhibits the characteristics that a polymer having a narrow molecular weight distribution can be obtained with easy control of the number average molecular weight and the weight average molecular weight.
- a homopolymer, a random copolymer, and a block copolymer can be produced by controlling the type and addition method of the monomer (see Patent Document 1).
- the polymerization method described in Patent Document 1 has a problem that the reaction rate is slow and the conversion rate of the monomer is low.
- the present invention provides a thiocarbonyl compound useful as a RAFT agent. Moreover, this invention provides the manufacturing method of the polymer excellent in the reactivity or the conversion ratio of a monomer, and its polymer by using the said thiocarbonyl compound. Furthermore, this invention provides the composition for adhesives or adhesives containing the said polymer.
- a thiocarbonyl compound represented by the following formula (a) is useful as a RAFT agent.
- n is 1 to 6
- Z is an organic group selected from substituted or unsubstituted aryl and substituted or unsubstituted heteroaryl.
- a method for producing a polymer characterized by containing the following (1) to (3) in the reaction system is excellent in reactivity or monomer conversion. It was.
- a polymer represented by the following formula (b) can be obtained by using the above-described method for producing a polymer.
- i is 2 or more
- n is 1 to 6
- Mi is a repeating unit derived from the same or different radical polymerizable monomer
- pi is 1 or independently of each other It is more than that and indicates the degree of polymerization of the repeating unit Mi.
- Z is an organic group selected from substituted or unsubstituted aryl, substituted or unsubstituted heteroaryl.
- composition for a pressure-sensitive adhesive or adhesive containing the polymer represented by the above formula (b) exhibits excellent characteristics. That is, the composition containing the polymer represented by the above formula (b) shows a high cohesive force and high adhesive force or high adhesion as compared with a composition containing a linear polymer having the same molecular weight. It was found to show power.
- FIG. 2 is a 1 HNMR measurement result of RAFT agent 1 obtained in Synthesis Example 1.
- FIG. 3 is a 13 C NMR measurement result of RAFT agent 1 obtained in Synthesis Example 1.
- FIG. It is a measurement result of the glass transition point of the polymer obtained in Polymerization Example 4 using a differential scanning calorimeter (DSC).
- DSC differential scanning calorimeter
- the thiocarbonyl compound of the present invention is represented by the following formula (a).
- n is 1 to 6
- Z is an organic group selected from substituted or unsubstituted aryl and substituted or unsubstituted heteroaryl.
- the substituent Z included in the thiocarbonyl compound represented by the above formula (a) is an organic group selected from substituted or unsubstituted aryl and substituted or unsubstituted heteroaryl.
- the substituent Z is preferably a substituted or unsubstituted aryl, and more preferably a substituted or unsubstituted benzyl, in consideration of reactivity or monomer conversion.
- a chain or branched polymer can be produced by controlling the number of thiocarbonyl groups. That is, a linear or branched polymer can be produced by controlling the number of n in the above formula (a).
- the n is 4 to 6 and the thiocarbonyl compound represented by the above (a) is used from the viewpoint of cohesive strength or adhesive strength. It is preferable to produce a coalescence. More preferably, a polymer using the thiocarbonyl compound represented by the above (a) in which n is 5 or 6 and particularly preferably using the thiocarbonyl compound represented by the above (a) in which n is 6 It is preferable to manufacture. Thereby, the composition using the polymer of the present invention exhibits higher cohesive force and higher adhesive force or higher adhesive force than the composition using the linear polymer having the same molecular weight.
- the method for producing a polymer of the present invention is characterized in that the following (1) to (3) are included in the reaction system.
- (1) Radical polymerizable monomer (2) Radical generator (3) Thiocarbonyl compound represented by the following formula (a) In the above formula (a), n is 1 to 6, and Z is an organic group selected from substituted or unsubstituted aryl and substituted or unsubstituted heteroaryl.
- a radical polymerizable monomer can be used as the monomer that can be used in the method for producing a polymer of the present invention.
- the radical polymerizable monomer include substituted or unsubstituted styrene, substituted or unsubstituted alkyl acrylate, substituted or unsubstituted alkyl methacrylate, acrylonitrile, N-alkylalkylamide, N-alkylmethacrylamide, N, N -Dialkylacrylamide, N, N-dialkylmethacrylamide, isoprene, butadiene, ethylene, vinyl acetate and combinations thereof can be selected.
- radically polymerizable monomers include methyl methacrylate, ethyl methacrylate, propyl methacrylate (including all isomers), butyl methacrylate (including all isomers), 2-ethylhexyl methacrylate, and isobornyl methacrylate.
- Methacrylic acid Methacrylic acid, benzyl methacrylate, phenyl methacrylate, methacrylonitrile, ⁇ -methylstyrene, methyl acrylate, ethyl acrylate, propyl acrylate (including all isomers), butyl acrylate (including all isomers), 2-ethylhexyl Acrylate (2EHA), isobornyl acrylate, acrylic acid, benzyl acrylate, phenyl acrylate, acrylonitrile, styrene, glycidyl methacrylate, 2-hydroxyethyl methacrylate Chryrate, hydroxypropyl methacrylate (including all isomers), hydroxybutyl methacrylate (including all isomers), N, N-dimethylaminoethyl methacrylate, N, N-diethylaminoethyl methacrylate, triethylene glycol methacrylate, itaconic acid An
- Preferred monomers in the method for producing the polymer of the present invention include substituted or unsubstituted styrene, substituted or unsubstituted alkyl acrylate, substituted or unsubstituted alkyl methacrylate, acrylonitrile, N-alkylalkylamide, and N-alkyl. Those selected from methacrylamide, N, N-dialkylacrylamide, N, N-dialkylmethacrylamide, isoprene, butadiene, ethylene, vinyl acetate and combinations thereof.
- a homopolymer, a random copolymer, and a block copolymer can be produced by controlling the type and addition method of the monomer.
- a polymer represented by the following formula (b) can be produced by using one or more monomers.
- i is 2 or more
- n is 1 to 6
- Mi is a repeating unit derived from the same or different radical polymerizable monomer
- pi is 1 or independently of each other It is more than that and indicates the degree of polymerization of the repeating unit Mi.
- Z is an organic group selected from substituted or unsubstituted aryl, substituted or unsubstituted heteroaryl.
- radical polymerizable monomer that generates the repeating unit Mi in the above formula (b) examples include monomers that can be used in the method for producing the polymer of the present invention described above, but are not limited thereto. It is not something.
- radical generator used in the method for producing a polymer in the present invention examples include 2,2′-azobis (isobutyronitrile) (AIBN), 4,4′-azobis (4-cyanopentanoic acid), 2- (T-Butylazo) -2-cyanopropane, 2,2′-azobis (isobutyramide) dihydrate, 2,2′-azobis (2-methylpropane), 2,2′-azobis [2- (5 -Methyl-2-imidazolin-2-yl) propane] dihydrochloride, 2,2'-azobis [2- (2-imidazolin-2-yl) propane] dihydrochloride, 2,2'-azobis [2- (2-imidazolin-2-yl) propane] disulfate dehydrate, 2,2′-azobis (2-methylpropionamide) dihydrochloride, 2,2′-azobis [N- (2-carboxyethyl)- 2-methylpropio Amidine] tetrahydrate, 2,2′-azobis [N
- an organic solvent can be used as desired.
- the organic solvent that can be used in the polymer production method of the present invention include methanol, ethanol, n-propanol, i-propanol, n-butanol, i-butanol, sec-butanol, t-butanol, and dipropylene glycol dimethyl ether.
- Synthesis example 1 A 100 mL three-necked round bottom flask connected with a synthetic dropping funnel of RAFT agent 1 was purged with nitrogen, and then 1.0 M diethyl ether solution (22 mL) of benzylmagnesium chloride was added and cooled to 0 ° C. in an ice bath. Carbon disulfide (1.32 mL) was added dropwise from the dropping funnel over 10 minutes, and the mixture was stirred at 0 ° C. for 4.5 hours. Then, after adding 30 mL of water and returning to room temperature, it wash
- phenylethyldithiocarboxylic acid (1.86 g) was added to a 200 mL eggplant flask, and potassium hydroxide (0.62 g) dissolved in 2 mL of water was added and stirred. Thereafter, water was distilled off to obtain a potassium salt of phenylethyldithiocarboxylic acid.
- the eggplant flask was purged with nitrogen, and 15 mL of THF was added. Further, hexakis (bromomethyl) benzene (1.17 g) mixed with 55 mL of THF was added dropwise over 25 minutes. Thereafter, the mixture was stirred at room temperature for 1 hour. As the reaction proceeded, the solution changed from red to yellow.
- the conversion rate of BA determined by gas chromatography was 90%, Mw was 100,000, and Mw / Mn was 2.0.
- 2-hydroxyethyl acrylate (hereinafter “2HEA”) (6.3 mL: 55 mmol) was added, and the mixture was stirred until uniform, and then nitrogen was blown in for 10 minutes.
- the eggplant flask was placed in a 60 ° C. oil bath and allowed to react for 20 hours. After returning to room temperature, analysis was performed.
- the conversion rate of 2HEA determined by gas chromatography was 99%, Mw determined by GPC was 110,000, and Mw / Mn was 2.0.
- the conversion rate of BA determined by gas chromatography was 90%
- Mw determined by GPC was 660,000
- Mw / Mn was 3.5.
- Polymerization example 4 AIBN (45 mg) and RAFT agent 1 (160 mg) were added as a radical polymerization initiator to a 100 mL eggplant flask and purged with nitrogen. To this were added butyl methacrylate (hereinafter “BMA”) (4.6 mL: 29 mmol) and toluene (2.6 mL) which were purified by distillation and removed the polymerization inhibitor, and nitrogen was blown in for 10 minutes. The eggplant flask was then placed in a 60 ° C. oil bath and allowed to react for 20 hours. As the reaction progressed, an increase in the viscosity of the reaction solution was confirmed. The conversion of BMA determined by gas chromatography was 90%, Mw determined by GPC was 116,000, and Mw / Mn was 1.9.
- BMA butyl methacrylate
- MMA methyl methacrylate
- the glass transition point of the polymer obtained in Polymerization Example 4 was measured with a differential scanning calorimeter (DSC). As a result, the peak of the glass transition point was confirmed in two places, 20 degreeC and 90 degreeC (refer FIG. 3). This confirmed that the polymer was a block copolymer.
- DSC differential scanning calorimeter
- pressure-sensitive adhesive 10 g of the polymer obtained in Polymerization Example 1 10 g of ethyl acetate as a diluent, and 0.1 g of Duranate D-201 manufactured by Asahi Kasei Chemicals Co., Ltd. as a crosslinking agent were mixed to obtain a pressure-sensitive adhesive solution. This was applied onto a 38 ⁇ m thick PET separator using an applicator so that the film thickness after drying was 25 ⁇ m. After drying at 100 ° C. for 1 minute, 50 ⁇ m untreated PET was bonded and cured at 23 ° C. and 65% humidity for 7 days to obtain an adhesive sheet 1.
- the adhesive physical property (adhesive force, holding power, and ball tack) was measured according to JISZ0237. The results are shown in Table II.
- the pressure-sensitive adhesive sheet 1 using the polymer of the present invention was superior in adhesive strength as compared to the pressure-sensitive adhesive sheet 2 using a linear polymer. Further, the pressure-sensitive adhesive sheet 1 using the polymer of the present invention did not cause “displacement” in the holding power test at 80 ° C. for 10 minutes. On the other hand, when the pressure-sensitive adhesive sheet 2 using the linear polymer was subjected to a holding power test at 80 ° C. for 10 minutes, the sheet dropped.
- Adhesive strength Adhesive sheet 1 was cut out to a width of 25 mm, the separator was peeled off, and affixed to a SUS # 304 plate using a 2 kg roller in an atmosphere of 23 ° C. and humidity 65%. Thirty minutes after the application, the film was peeled from the SUS # 400 plate using Tensilon under the conditions of a peeling angle of 180 ° and a peeling speed of 300 mm / min, and the peel strength at this time was determined as an adhesive strength.
- the pressure-sensitive adhesive sheet 1 was cut into a 25 mm width ⁇ 75 mm length, the separator was peeled off, and an area of 25 mm ⁇ 25 mm was pasted on a SUS # 304 plate using a 2 kg roller in an atmosphere of 23 ° C. and 65% humidity. .
- One hour after application the sample was left in a constant temperature bath at 80 ° C. for one hour, and then a 1 kg weight was attached to the end of the sample not attached to the SUS plate, and the deviation of the sample after 24 hours from the SUS plate was measured.
- Ball tack (30 °) Measured according to the Dow method.
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- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
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Abstract
Description
上記式(a)中、nは1~6であり、Zは置換または非置換のアリール、置換または非置換のヘテロアリールから選択される有機基である。
上記式(a)中、nは1~6であり、Zは置換または非置換のアリール、置換または非置換のヘテロアリールから選択される有機基である。
(1)ラジカル重合性単量体
(2)ラジカル発生剤
(3)下記式(a)で表されるチオカルボニル化合物
上記式(a)中、nは1~6であり、Zは置換または非置換のアリール、置換または非置換のヘテロアリールから選択される有機基である。
上記式(b)中、iは2またはそれ以上であり、nは1~6であり、Miは同一または異なるラジカル重合性単量体由来の反復単位を示し、piは互いに独立して1またはそれ以上であり反復単位Miの重合度を示す。Zは、置換または非置換のアリール、置換または非置換のヘテロアリールから選択される有機基である。
(1)ラジカル重合性単量体
(2)ラジカル発生剤
(3)下記式(a)で表されるチオカルボニル化合物
上記式(a)中、nは1~6であり、Zは置換または非置換のアリール、置換または非置換のヘテロアリールから選択される有機基である。
上記式(b)中、iは2またはそれ以上であり、nは1~6であり、Miは同一または異なるラジカル重合性単量体由来の反復単位を示し、piは互いに独立して1またはそれ以上であり反復単位Miの重合度を示す。Zは、置換または非置換のアリール、置換または非置換のヘテロアリールから選択される有機基である。
RAFT剤1の合成
滴下ロートを接続した100mLの三口丸底フラスコを窒素置換した後、ベンジルマグネシウムクロライドの1.0Mジエチルエーテル溶液(22mL)を加えて氷浴で0℃に冷却した。ここに二硫化炭素(1.32mL)を滴下ロートから10分間かけて滴下した後、0℃で4.5時間攪拌した。その後、水30mLを加え室温に戻した後、ジエチルエーテル(計100mL)で2回洗浄した。ジエチルエーテル(50mL)と30%HCL(5mL)を加え、有機層より生成物を抽出した。その後、水(計150mL)で3回洗浄した。ジエチルエーテル層を濃縮することによりフェニルエチルジチオカルボン酸(1.86g)を得た。
1H−NMR(CDCl3)(ppm):4.1(s、12H)、4.2(s、12H)、7.2−7.4(m、30H)
13C−NMR(CDCl3)(ppm):36.9、57.5、127.4、128.6、129.1、135.5、136.3
500mLナスフラスコに、ラジカル重合開始剤として2,2’−アゾビス(イソブチロニトリル)(以下「AIBN」)(70mg)、RAFT試薬1(230mg)を加え窒素置換した。これに、蒸留精製して重合禁止剤を除去したブチルアクリレート(以下「BA」)(46mL:320mmol)、トルエン(26mL)を加え、窒素を10分間吹き込んだ。その後、ナスフラスコを60℃の油浴に入れ20時間反応させた。
100mLナスフラスコに、ラジカル重合開始剤としてAIBN(1.4mg)、RAFT剤1(4.6mg)を加え窒素置換した。これに、蒸留精製し重合禁止剤を除去したBA(4.6mL:32mmol)、トルエン(2.6mL)を加え、窒素を10分間吹き込んだ。その後、ナスフラスコを60℃の油浴に入れ20時間反応させた。
100mLナスフラスコに、ラジカル重合開始剤としてAIBN(140mg)、RAFT剤1(460mg)を加え窒素置換した。これに、蒸留精製し重合禁止剤を除去したBA(4.6mL:32mmol)、トルエン(2.6mL)を加え、窒素を10分間吹き込んだ。その後、ナスフラスコを60℃の油浴に入れ20時間反応させた。反応が進行するにつれて、反応溶液の粘度上昇が確認された。ガスクロマトグラフィーにより求めたBAの転化率は90%、GPCにより求めたMwは8,000、Mw/Mnは1.5であった。
100mLナスフラスコに、ラジカル重合開始剤としてAIBN(45mg)、RAFT剤1(160mg)を加え窒素置換した。これに、蒸留精製し重合禁止剤を除去したブチルメタクリレート(以下「BMA」)(4.6mL:29mmol)、トルエン(2.6mL)を加え、窒素を10分間吹き込んだ。その後ナスフラスコを60℃の油浴に入れ20時間反応させた。反応が進行するにつれて、反応溶液の粘度上昇が確認された。ガスクロマトグラフィーにより求めたBMAの転化率は90%、GPCにより求めたMwは116,000、Mw/Mnは1.9であった。
重合例4で得られた重合体のガラス転移点を示差走査熱量計(DSC)により測定した。その結果、20℃と90℃の2箇所にガラス転移点のピークが確認された(図3参照)。このことより、ポリマーがブロック共重合体であることが確認された。
500mLナスフラスコに、ラジカル重合開始剤としてAIBN(500mg)を入れ窒素置換した。これに、蒸留精製して重合禁止剤を除去したBA(46mL:320mmol)、2HEA(6.3mL:55mmol)、酢酸エチル(44mL)、およびトルエン(11mL)を加え、窒素を10分間吹き込んだ。ナスフラスコを油浴に入れ、還流下で6時間反応させた。反応が進行するにつれて反応溶液の粘度上昇が確認された。室温に戻した後、分析を行った。GPCにより求めたMwは110,000、Mw/Mnは2.5であった。
重合例1で得られた重合体を10g、希釈剤として酢酸エチルを10g、架橋剤として旭化成ケミカルズ社製デュラネートD−201を0.1g混合し、粘着剤溶液を得た。これを厚さ38μmのPET製セパレーター上にアプリケーターを用いて、乾燥後の膜厚が25μmとなるように塗布した。100℃で1分間の乾燥後、50μmの未処理PETを貼り合わせ、23℃、湿度65%で7日間養生を行い、粘着シート1を得た。
粘着力:粘着シート1を25mm幅に切り出し、セパレータを剥いでSUS#304板に23℃、湿度65%の雰囲気下で2kgのローラーを用いて貼付した。貼付30分後に、テンシロンを用いて剥離角180°、剥離速度300mm/minの条件でSUS#400板から剥離し、このときの剥離強度を粘着力として求めた。
保持力:粘着シート1を25mm幅×75mm長に切り出し、セパレータを剥いで、SUS#304板に23℃、湿度65%の雰囲気下で2kgのローラーを用いて、25mm×25mmの面積だけ貼付した。貼付1時間後に80℃の恒温槽に1時間放置し、その後SUS板に貼付されていない側の試料端部に1kgの錘を取り付けて、24時間後の試料のSUS板からのずれを測定した。
ボールタック(30°):J.Dow法に従って測定した。
Claims (5)
- ラジカル重合性単量体が、置換または非置換のスチレン、置換または非置換のアルキルアクリレート、置換または非置換のアルキルメタクリレート、アクリロニトリル、N−アルキルアルキルアミド、N−アルキルメタクリルアミド、N,N−ジアルキルアクリルアミド、N,N−ジアルキルメタクリルアミド、イソプレン、ブタジエン、エチレン、ビニルアセテートおよびこれらの組み合わせから選択されることを特徴とする、請求項3に記載された重合体。
- 請求項3または4に記載された重合体を含むことを特徴とする、粘着剤用または接着剤用組成物。
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JP2013505308A (ja) * | 2009-09-17 | 2013-02-14 | ランクセス・ドイチュランド・ゲーエムベーハー | ニトリルゴムおよび有機溶媒中におけるその製造 |
WO2015098314A1 (ja) * | 2013-12-24 | 2015-07-02 | 綜研化学株式会社 | 粘着剤用組成物、粘着剤および粘着シート |
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JP2002265508A (ja) * | 2001-03-07 | 2002-09-18 | Kanegafuchi Chem Ind Co Ltd | 末端にメルカプト基を有する重合体の製造方法 |
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JP2002265508A (ja) * | 2001-03-07 | 2002-09-18 | Kanegafuchi Chem Ind Co Ltd | 末端にメルカプト基を有する重合体の製造方法 |
JP2002363246A (ja) * | 2001-05-31 | 2002-12-18 | Kanegafuchi Chem Ind Co Ltd | ポリウレタン系重合体 |
JP2003012719A (ja) * | 2001-06-27 | 2003-01-15 | Kanegafuchi Chem Ind Co Ltd | アルケニル基および硫黄原子含有ビニル系重合体 |
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JP2013505308A (ja) * | 2009-09-17 | 2013-02-14 | ランクセス・ドイチュランド・ゲーエムベーハー | ニトリルゴムおよび有機溶媒中におけるその製造 |
WO2015098314A1 (ja) * | 2013-12-24 | 2015-07-02 | 綜研化学株式会社 | 粘着剤用組成物、粘着剤および粘着シート |
JP5982068B2 (ja) * | 2013-12-24 | 2016-08-31 | 綜研化学株式会社 | 粘着剤用組成物、粘着剤および粘着シート |
JPWO2015098314A1 (ja) * | 2013-12-24 | 2017-03-23 | 綜研化学株式会社 | 粘着剤用組成物、粘着剤および粘着シート |
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US20120108757A1 (en) | 2012-05-03 |
JPWO2010119970A1 (ja) | 2012-10-22 |
US8796386B2 (en) | 2014-08-05 |
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