JP5594283B2 - 化合物、フッ素原子含有重合体、及び感放射線性樹脂組成物 - Google Patents
化合物、フッ素原子含有重合体、及び感放射線性樹脂組成物 Download PDFInfo
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- JP5594283B2 JP5594283B2 JP2011500678A JP2011500678A JP5594283B2 JP 5594283 B2 JP5594283 B2 JP 5594283B2 JP 2011500678 A JP2011500678 A JP 2011500678A JP 2011500678 A JP2011500678 A JP 2011500678A JP 5594283 B2 JP5594283 B2 JP 5594283B2
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- XMQFTWRPUQYINF-UHFFFAOYSA-N bensulfuron-methyl Chemical compound COC(=O)C1=CC=CC=C1CS(=O)(=O)NC(=O)NC1=NC(OC)=CC(OC)=N1 XMQFTWRPUQYINF-UHFFFAOYSA-N 0.000 description 1
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- 210000000692 cap cell Anatomy 0.000 description 1
- 150000001716 carbazoles Chemical class 0.000 description 1
- 150000001732 carboxylic acid derivatives Chemical class 0.000 description 1
- 150000001733 carboxylic acid esters Chemical class 0.000 description 1
- 239000012986 chain transfer agent Substances 0.000 description 1
- 229960002471 cholic acid Drugs 0.000 description 1
- 235000019416 cholic acid Nutrition 0.000 description 1
- OEYIOHPDSNJKLS-UHFFFAOYSA-N choline Chemical compound C[N+](C)(C)CCO OEYIOHPDSNJKLS-UHFFFAOYSA-N 0.000 description 1
- 229960001231 choline Drugs 0.000 description 1
- 238000004587 chromatography analysis Methods 0.000 description 1
- 238000004440 column chromatography Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 150000003997 cyclic ketones Chemical class 0.000 description 1
- 125000000113 cyclohexyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])(*)C([H])([H])C1([H])[H] 0.000 description 1
- 125000002933 cyclohexyloxy group Chemical group C1(CCCCC1)O* 0.000 description 1
- XCIXKGXIYUWCLL-UHFFFAOYSA-N cyclopentanol Chemical compound OC1CCCC1 XCIXKGXIYUWCLL-UHFFFAOYSA-N 0.000 description 1
- 125000001511 cyclopentyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])(*)C1([H])[H] 0.000 description 1
- 125000001887 cyclopentyloxy group Chemical group C1(CCCC1)O* 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 239000012933 diacyl peroxide Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- WYACBZDAHNBPPB-UHFFFAOYSA-N diethyl oxalate Chemical compound CCOC(=O)C(=O)OCC WYACBZDAHNBPPB-UHFFFAOYSA-N 0.000 description 1
- HPNMFZURTQLUMO-UHFFFAOYSA-N diethylamine Chemical compound CCNCC HPNMFZURTQLUMO-UHFFFAOYSA-N 0.000 description 1
- 229940019778 diethylene glycol diethyl ether Drugs 0.000 description 1
- XXJWXESWEXIICW-UHFFFAOYSA-N diethylene glycol monoethyl ether Chemical compound CCOCCOCCO XXJWXESWEXIICW-UHFFFAOYSA-N 0.000 description 1
- 229940075557 diethylene glycol monoethyl ether Drugs 0.000 description 1
- SBZXBUIDTXKZTM-UHFFFAOYSA-N diglyme Chemical compound COCCOCCOC SBZXBUIDTXKZTM-UHFFFAOYSA-N 0.000 description 1
- 239000000539 dimer Substances 0.000 description 1
- WEHWNAOGRSTTBQ-UHFFFAOYSA-N dipropylamine Chemical compound CCCNCCC WEHWNAOGRSTTBQ-UHFFFAOYSA-N 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000005593 dissociations Effects 0.000 description 1
- 208000018459 dissociative disease Diseases 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 229940052761 dopaminergic adamantane derivative Drugs 0.000 description 1
- 238000001312 dry etching Methods 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000012156 elution solvent Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- YQGOJNYOYNNSMM-UHFFFAOYSA-N eosin Chemical compound [Na+].OC(=O)C1=CC=CC=C1C1=C2C=C(Br)C(=O)C(Br)=C2OC2=C(Br)C(O)=C(Br)C=C21 YQGOJNYOYNNSMM-UHFFFAOYSA-N 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 125000005745 ethoxymethyl group Chemical group [H]C([H])([H])C([H])([H])OC([H])([H])* 0.000 description 1
- CKSRFHWWBKRUKA-UHFFFAOYSA-N ethyl 2-ethoxyacetate Chemical compound CCOCC(=O)OCC CKSRFHWWBKRUKA-UHFFFAOYSA-N 0.000 description 1
- GFUIDHWFLMPAGY-UHFFFAOYSA-N ethyl 2-hydroxy-2-methylpropanoate Chemical compound CCOC(=O)C(C)(C)O GFUIDHWFLMPAGY-UHFFFAOYSA-N 0.000 description 1
- ZANNOFHADGWOLI-UHFFFAOYSA-N ethyl 2-hydroxyacetate Chemical compound CCOC(=O)CO ZANNOFHADGWOLI-UHFFFAOYSA-N 0.000 description 1
- BHXIWUJLHYHGSJ-UHFFFAOYSA-N ethyl 3-ethoxypropanoate Chemical compound CCOCCC(=O)OCC BHXIWUJLHYHGSJ-UHFFFAOYSA-N 0.000 description 1
- IJUHLFUALMUWOM-UHFFFAOYSA-N ethyl 3-methoxypropanoate Chemical compound CCOC(=O)CCOC IJUHLFUALMUWOM-UHFFFAOYSA-N 0.000 description 1
- XYIBRDXRRQCHLP-UHFFFAOYSA-N ethyl acetoacetate Chemical compound CCOC(=O)CC(C)=O XYIBRDXRRQCHLP-UHFFFAOYSA-N 0.000 description 1
- 229940117360 ethyl pyruvate Drugs 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
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- 235000019253 formic acid Nutrition 0.000 description 1
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- 125000000524 functional group Chemical group 0.000 description 1
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- 239000000499 gel Substances 0.000 description 1
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- 229940100608 glycol distearate Drugs 0.000 description 1
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- FNTBYCDLLBOPTG-UHFFFAOYSA-N hexyl adamantane-1-carboxylate Chemical compound C1C(C2)CC3CC2CC1(C(=O)OCCCCCC)C3 FNTBYCDLLBOPTG-UHFFFAOYSA-N 0.000 description 1
- 238000004128 high performance liquid chromatography Methods 0.000 description 1
- 150000002432 hydroperoxides Chemical class 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 239000003999 initiator Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
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- 238000004895 liquid chromatography mass spectrometry Methods 0.000 description 1
- SMEROWZSTRWXGI-HVATVPOCSA-N lithocholic acid Chemical class C([C@H]1CC2)[C@H](O)CC[C@]1(C)[C@@H]1[C@@H]2[C@@H]2CC[C@H]([C@@H](CCC(O)=O)C)[C@@]2(C)CC1 SMEROWZSTRWXGI-HVATVPOCSA-N 0.000 description 1
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- ZQMHJBXHRFJKOT-UHFFFAOYSA-N methyl 2-[(1-methoxy-2-methyl-1-oxopropan-2-yl)diazenyl]-2-methylpropanoate Chemical compound COC(=O)C(C)(C)N=NC(C)(C)C(=O)OC ZQMHJBXHRFJKOT-UHFFFAOYSA-N 0.000 description 1
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- 238000012986 modification Methods 0.000 description 1
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- 125000001298 n-hexoxy group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])O* 0.000 description 1
- 125000006609 n-nonyloxy group Chemical group 0.000 description 1
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- 229910017464 nitrogen compound Inorganic materials 0.000 description 1
- 150000002830 nitrogen compounds Chemical class 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
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- 230000003287 optical effect Effects 0.000 description 1
- 239000012044 organic layer Substances 0.000 description 1
- 125000005740 oxycarbonyl group Chemical group [*:1]OC([*:2])=O 0.000 description 1
- 125000001037 p-tolyl group Chemical group [H]C1=C([H])C(=C([H])C([H])=C1*)C([H])([H])[H] 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 125000006551 perfluoro alkylene group Chemical group 0.000 description 1
- 150000002978 peroxides Chemical class 0.000 description 1
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- 125000001484 phenothiazinyl group Chemical class C1(=CC=CC=2SC3=CC=CC=C3NC12)* 0.000 description 1
- WVDDGKGOMKODPV-ZQBYOMGUSA-N phenyl(114C)methanol Chemical compound O[14CH2]C1=CC=CC=C1 WVDDGKGOMKODPV-ZQBYOMGUSA-N 0.000 description 1
- 125000003884 phenylalkyl group Chemical group 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
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- 239000011148 porous material Substances 0.000 description 1
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- 125000002572 propoxy group Chemical group [*]OC([H])([H])C(C([H])([H])[H])([H])[H] 0.000 description 1
- RUOJZAUFBMNUDX-UHFFFAOYSA-N propylene carbonate Chemical compound CC1COC(=O)O1 RUOJZAUFBMNUDX-UHFFFAOYSA-N 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 150000003220 pyrenes Chemical class 0.000 description 1
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 description 1
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- 230000035484 reaction time Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
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- 238000000926 separation method Methods 0.000 description 1
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- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 description 1
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- IMNIMPAHZVJRPE-UHFFFAOYSA-N triethylenediamine Chemical compound C1CN2CCN1CC2 IMNIMPAHZVJRPE-UHFFFAOYSA-N 0.000 description 1
- 239000013638 trimer Substances 0.000 description 1
- 150000003672 ureas Chemical class 0.000 description 1
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Images
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- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C68/00—Preparation of esters of carbonic or haloformic acids
- C07C68/06—Preparation of esters of carbonic or haloformic acids from organic carbonates
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- C08F2/48—Polymerisation initiated by wave energy or particle radiation by ultraviolet or visible light
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- C08F20/02—Monocarboxylic acids having less than ten carbon atoms, Derivatives thereof
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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- C08F20/28—Esters containing oxygen in addition to the carboxy oxygen containing no aromatic rings in the alcohol moiety
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- C08F214/18—Monomers containing fluorine
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
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- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
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- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
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Description
本発明の化合物は、下記一般式(1)で表される化合物であり、後述する本発明のフッ素原子含有重合体を構成する化合物である。本発明の化合物は、その分子中に、特定のフルオロアルキレン基を有することから、本発明の化合物に由来する繰り返し単位(1)(即ち、繰り返し単位(I))を有するフッ素原子含有重合体を含む重合体成分を含有する感放射線性樹脂組成物は、レジスト被膜と液浸露光用液体との後退接触角を十分に高くすることができる。また、液浸露光時に接触した水等の液浸露光用液体への溶出物の溶出量を少なくしたり、液浸露光に由来するW/M(ウォーターマーク)やバブル欠陥の発生を抑制したりすることができる。
本発明の化合物の製造方法は、一般式(1−0)で表される化合物と、一般式(0)で表される化合物と、を反応させる工程を含む方法である。但し、本発明の化合物は、この製造方法により製造された化合物に限定されるものではない。この製造方法により本発明の化合物を簡便に合成することができる。なお、この反応は、アミン類の存在下、適当な溶媒中で反応させることが好ましい。
1.構成成分:
本発明のフッ素原子含有重合体は、「I.化合物」にて記載した本発明の化合物に由来する繰り返し単位(1)(以下、「繰り返し単位(1)」ともいう)を有するものである。繰り返し単位(1)の具体例は、下記一般式(I)で表される繰り返し単位(I)(以下、「繰り返し単位(I)」ともいう)である。なお、このフッ素原子含有重合体は、フッ素原子含有重合体のみからなる塗膜を形成した場合に、その塗膜の「後退接触角」が70°以上であることが好ましく、72°以上であることが更に好ましく、75°以上であることが特に好ましい。なお、本明細書中、「後退接触角」とは、塗膜(レジスト被膜)を形成した基板上に水を25μL滴下し、その後、基板上の水を10μL/minの速度で吸引した際の液面と基板との接触角をいう。このような後退接触角は、例えば、KRUS社製の接触角計(商品名「DSA−10」)を用いて測定することができる。
フッ素原子含有重合体は、例えば、所定の各繰り返し単位に対応する化合物を、ヒドロパーオキシド類、ジアルキルパーオキシド類、ジアシルパーオキシド類、アゾ化合物等のラジカル重合開始剤を使用し、必要に応じて連鎖移動剤の存在下、適当な溶媒中で重合することにより製造することができる。
フッ素原子含有重合体のゲルパーミエーションクロマトグラフィ(GPC)によるポリスチレン換算の重量平均分子量(以下、「Mw」ともいう)は、1000〜50000であることが好ましく、1000〜40000であることが更に好ましく、1000〜30000であることが特に好ましい。フッ素原子含有重合体のMwが1000未満であると、十分に高い後退接触角が得られないおそれがある。一方、50000超であると、レジストとした際の現像性が低下する傾向がある。
本発明の感放射線性樹脂組成物の一実施形態について具体的に説明する。感放射線性樹脂組成物は、「III.フッ素原子含有重合体」にて記載した本発明のフッ素原子含有重合体(以下、「重合体(A)」ともいう)と、酸不安定基含有重合体(B)(但し、重合体(A)を除く。以下、「重合体(B)」ともいう)と、を含む重合体成分を含有するものであり、通常、溶剤を含有するものである。
重合体成分は、重合体(A)とは異なる酸不安定基含有重合体(B)を含む。このような重合体(B)を含むことによって、高後退接触角、低溶出量、及び現像欠陥の抑制等の効果を好適に発現させることができる。
酸不安定基含有重合体(B)は、重合体(A)の効果、例えば、高後退接触角、低溶出量、及び現像欠陥の抑制等の効果を好適に発現させることができるものであれば特に制限はないが、酸の作用によりアルカリ可溶性となる、アルカリ不溶性又はアルカリ難溶性の重合体が好ましい。
感放射線性樹脂組成物は、普通、その使用に際して、全固形分濃度が、通常、1〜50質量%、好ましくは1〜25質量%となるように、溶剤に溶解した後、例えば孔径0.2μm程度のフィルターでろ過することによって、組成物溶液として調製される。
本発明の感放射線性樹脂組成物は、重合体(A)と重合体(B)とを含む重合体成分及び溶剤に加えて、感放射線性酸発生剤(以下、単に「酸発生剤(C)」ともいう)を更に含有することが好ましい。なお、酸発生剤(C)は、1種単独で、又は2種以上を組み合わせて使用することができる。
また、感放射線性樹脂組成物は、添加剤として、窒素含有化合物(以下、「窒素含有化合物(E)」ともいう)を更に含有していてもよい。
感放射線性樹脂組成物は、必要に応じて、脂環族添加剤、界面活性剤、増感剤等の各種の他の添加剤を更に含有していてもよい。
感放射線性樹脂組成物は、特に化学増幅型レジストとして有用である。化学増幅型レジストにおいては、露光により酸発生剤から発生した酸の作用によって、重合体成分中の酸解離性基又は酸不安定基が解離して、カルボキシル基を生じ、その結果、レジストの露光部のアルカリ現像液に対する溶解性が高くなり、この露光部がアルカリ現像液によって溶解、除去され、ポジ型のレジストパターンが得られる。
流量;1.0mL/分
溶出溶媒;テトラヒドロフラン
カラム温度;40℃
下記式(a−1)で表される化合物(以下、「化合物(a−1)」ともいう)42.03g(60mmol)、トリエチルアミン(NEt3)1.52g(15mmol)、ジメチルアミノピリジン(DMAP)1.83g(15mmol)、及びテトラヒドロフラン(THF)80mLを、還流冷却管及び滴下漏斗を備えた200mL三口フラスコに入れ、オイルバスを用いて70℃に加熱、還流した。そこに、THF20mLに溶解した下記式(a−5)で表される化合物39.28g(180mmol)の溶液を5分間かけて滴下した。反応を、薄層クロマトグラフィー(TLC)を用いて追跡し、原料の化合物(a−1)が消失した時点で反応を停止し、室温まで放冷した。水40mLと酢酸エチル75mLを加え、分液操作により有機層を取り出した後、ロータリーエバポレーターを用いて濃縮し、展開溶媒(ヘキサン/酢酸エチル=2/1)を用いてシリカゲルカラムクロマトグラフィー(商品名「ワコーゲルC−300」、和光純薬社製)を行い、目的物である下記式(M−4)で表される化合物(以下、「化合物(M−4)」ともいう)を収率80%の無色液体として単離した。
原料として化合物(a−1)のかわりに表1に示す化合物(a−2)〜(a−4)を用いたこと以外は、実施例1と同様の方法によって、化合物(M−5)〜(M−7)を合成した。得られた化合物の種類と収率を実施例1と併せて表1に示す。
1H−NMR(400MHz,CDCl3):δ(ppm)=6.13(d,1H)、5.64(d,1H)、4.84〜4.97(m,1H)、2.54〜2.80(m,2H)、2.11(s,3H)、1.95〜1.65(m,4H)、1.45(s,18H)。
1H−NMR(400MHz,CDCl3):δ(ppm)=6.12(d,1H)、5.62(d,1H)、4.77〜4.92(m,1H)、2.43〜2.61(m,1H)、2.13(s,3H)、1.75(q,2H)、1.66(t、2H)、1.55(d,2H)、1.38(s,18H)、1.10(d,3H)。
1H−NMR(400MHz,CDCl3):δ(ppm)=6.13(d,1H)、5.63(d,1H)、4.76〜4.88(m,1H)、2.14(s,3H)、1.83(td,4H)、1.62(t,4H)、1.38(s,18H)。
下記式(M−1)で表される化合物(以下、「化合物(M−1)」ともいう)14.96g(90mol%)、実施例1で合成した化合物(M−4)35.04g(10mol%)、及び重合開始剤としてジメチル−2,2’−アゾビスイソブチレート(以下、「AIBN」ともいう)1.75g(5mol%)を、100gのメチルエチルケトンに溶解した単量体溶液を準備した。一方、温度計及び滴下漏斗を備えた500mLの三つ口フラスコにメチルエチルケトン50gを加え、30分間窒素パージを行った。
表2に示す化合物を表2に示す割合で使用したこと以外は、実施例5と同様にして、フッ素原子含有重合体(A−2)〜(A−6)を調製した。各フッ素原子含有重合体のMw、Mw/Mn、収率(%)、及び各化合物に由来する繰り返し単位の含有率(mol%)を表3に示す。
下記式(M−2)で表される化合物(以下、「化合物(M−2)」ともいう)21.5g(50mol%)、及び下記式(M−3)で表される化合物(以下、「化合物(M−3)」ともいう)28.4g(50mol%)を、2−ブタノン100gに溶解し、更にAIBN2.10gを投入して単量体溶液を準備した。一方、50gの2−ブタノンを投入した500mLの三口フラスコを30分窒素パージした後、攪拌しながら80℃に加熱した。そこに、準備しておいた単量体溶液を滴下漏斗を用いて3時間かけて滴下した。
実施例5で調製したフッ素原子含有重合体(A−1)2.0部、合成例で調製した酸不安定基含有重合体(B−1)100部、酸発生剤(C−1)9.6部、窒素含有化合物(E−1)0.65部、溶剤(D−1)1500部、溶剤(D−2)650部、及び溶剤(D−3)30部を混合し、感放射線性樹脂組成物(1)を調製した。なお、酸発生剤(C−1)、窒素含有化合物(E−1)、及び溶剤(D−1)〜(D−3)の種類について、以下に記す。
溶剤(D−2):シクロヘキサノン(下記式(D−2)で表される化合物)
溶剤(D−3):γ−ブチロラクトン(下記式(D−3)で表される化合物)
表4に示す配合処方にしたこと以外は、実施例11と同様にして感放射線性樹脂組成物(2)〜(8)を調製した。
使用カラム;商品名「CAPCELL PAK MG」、資生堂社製、1本
流量;0.2mL/分
流出溶剤:水/メタノール(3/7)(質量比)に0.1%のギ酸を添加した溶剤
測定温度;35℃
Claims (9)
- 下記一般式(1)で表される化合物。
- 前記一般式(1)で表される化合物が、下記一般式(1a)で表される化合物である請求項1に記載の化合物。
- 下記一般式(1−2)で表される請求項2に記載の化合物。
- 請求項1〜3のいずれか一項に記載の化合物に由来する繰り返し単位(1)を有するフッ素原子含有重合体。
- 下記一般式(I)で表される繰り返し単位を有するフッ素原子含有重合体。
- 前記一般式(I)で表される繰り返し単位が、下記一般式(Ia)で表される繰り返し単位である請求項5に記載のフッ素原子含有重合体。
- 前記一般式(Ia)で表される繰り返し単位が、下記一般式(I−2)で表される繰り返し単位である請求項6に記載のフッ素原子含有重合体。
- 請求項4〜7のいずれか一項に記載のフッ素原子含有重合体(A)と、
酸不安定基含有重合体(B)(但し、前記フッ素原子含有重合体(A)を除く)と、を含む重合体成分を含有する感放射線性樹脂組成物。 - 前記フッ素原子含有重合体(A)の含有量が、前記酸不安定基含有重合体(B)100質量部に対して、0.1〜40質量部である請求項8に記載の感放射線性樹脂組成物。
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