JP5223667B2 - エポキシ樹脂用内添型離型剤 - Google Patents
エポキシ樹脂用内添型離型剤 Download PDFInfo
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- JP5223667B2 JP5223667B2 JP2008334138A JP2008334138A JP5223667B2 JP 5223667 B2 JP5223667 B2 JP 5223667B2 JP 2008334138 A JP2008334138 A JP 2008334138A JP 2008334138 A JP2008334138 A JP 2008334138A JP 5223667 B2 JP5223667 B2 JP 5223667B2
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- 229920000647 polyepoxide Polymers 0.000 title claims description 42
- 239000003822 epoxy resin Substances 0.000 title claims description 41
- 239000003795 chemical substances by application Substances 0.000 title description 22
- 239000004593 Epoxy Substances 0.000 claims description 19
- 229920001577 copolymer Polymers 0.000 claims description 16
- 239000006082 mold release agent Substances 0.000 claims description 13
- -1 acrylate ester Chemical class 0.000 claims description 12
- 125000000217 alkyl group Chemical group 0.000 claims description 11
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 claims description 8
- 125000004432 carbon atom Chemical group C* 0.000 claims description 6
- 125000003055 glycidyl group Chemical group C(C1CO1)* 0.000 claims description 6
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 15
- 239000000203 mixture Substances 0.000 description 13
- 238000011156 evaluation Methods 0.000 description 10
- 239000001993 wax Substances 0.000 description 10
- 150000001875 compounds Chemical class 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 6
- 239000003999 initiator Substances 0.000 description 6
- CABDEMAGSHRORS-UHFFFAOYSA-N oxirane;hydrate Chemical compound O.C1CO1 CABDEMAGSHRORS-UHFFFAOYSA-N 0.000 description 6
- 229920000298 Cellophane Polymers 0.000 description 5
- SOGAXMICEFXMKE-UHFFFAOYSA-N alpha-Methyl-n-butyl acrylate Natural products CCCCOC(=O)C(C)=C SOGAXMICEFXMKE-UHFFFAOYSA-N 0.000 description 5
- VOZRXNHHFUQHIL-UHFFFAOYSA-N glycidyl methacrylate Chemical compound CC(=C)C(=O)OCC1CO1 VOZRXNHHFUQHIL-UHFFFAOYSA-N 0.000 description 5
- 239000004698 Polyethylene Substances 0.000 description 4
- 239000004203 carnauba wax Substances 0.000 description 4
- 235000013869 carnauba wax Nutrition 0.000 description 4
- 238000005227 gel permeation chromatography Methods 0.000 description 4
- 239000000178 monomer Substances 0.000 description 4
- 229920003986 novolac Polymers 0.000 description 4
- HMZGPNHSPWNGEP-UHFFFAOYSA-N octadecyl 2-methylprop-2-enoate Chemical compound CCCCCCCCCCCCCCCCCCOC(=O)C(C)=C HMZGPNHSPWNGEP-UHFFFAOYSA-N 0.000 description 4
- 239000003921 oil Substances 0.000 description 4
- 229920000573 polyethylene Polymers 0.000 description 4
- 238000006116 polymerization reaction Methods 0.000 description 4
- 239000002904 solvent Substances 0.000 description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 3
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 3
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 125000003700 epoxy group Chemical group 0.000 description 3
- 150000002148 esters Chemical class 0.000 description 3
- 238000010528 free radical solution polymerization reaction Methods 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- 238000003786 synthesis reaction Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- JTHZUSWLNCPZLX-UHFFFAOYSA-N 6-fluoro-3-methyl-2h-indazole Chemical compound FC1=CC=C2C(C)=NNC2=C1 JTHZUSWLNCPZLX-UHFFFAOYSA-N 0.000 description 2
- CMVNWVONJDMTSH-UHFFFAOYSA-N 7-bromo-2-methyl-1h-quinazolin-4-one Chemical compound C1=CC(Br)=CC2=NC(C)=NC(O)=C21 CMVNWVONJDMTSH-UHFFFAOYSA-N 0.000 description 2
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 235000014113 dietary fatty acids Nutrition 0.000 description 2
- 229910001873 dinitrogen Inorganic materials 0.000 description 2
- ZUOUZKKEUPVFJK-UHFFFAOYSA-N diphenyl Chemical compound C1=CC=CC=C1C1=CC=CC=C1 ZUOUZKKEUPVFJK-UHFFFAOYSA-N 0.000 description 2
- KHAYCTOSKLIHEP-UHFFFAOYSA-N docosyl prop-2-enoate Chemical compound CCCCCCCCCCCCCCCCCCCCCCOC(=O)C=C KHAYCTOSKLIHEP-UHFFFAOYSA-N 0.000 description 2
- 239000000194 fatty acid Substances 0.000 description 2
- 229930195729 fatty acid Natural products 0.000 description 2
- 150000004665 fatty acids Chemical class 0.000 description 2
- ZNAOFAIBVOMLPV-UHFFFAOYSA-N hexadecyl 2-methylprop-2-enoate Chemical compound CCCCCCCCCCCCCCCCOC(=O)C(C)=C ZNAOFAIBVOMLPV-UHFFFAOYSA-N 0.000 description 2
- PZDUWXKXFAIFOR-UHFFFAOYSA-N hexadecyl prop-2-enoate Chemical compound CCCCCCCCCCCCCCCCOC(=O)C=C PZDUWXKXFAIFOR-UHFFFAOYSA-N 0.000 description 2
- 230000002401 inhibitory effect Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- QWVGKYWNOKOFNN-UHFFFAOYSA-N o-cresol Chemical compound CC1=CC=CC=C1O QWVGKYWNOKOFNN-UHFFFAOYSA-N 0.000 description 2
- RPQRDASANLAFCM-UHFFFAOYSA-N oxiran-2-ylmethyl prop-2-enoate Chemical compound C=CC(=O)OCC1CO1 RPQRDASANLAFCM-UHFFFAOYSA-N 0.000 description 2
- 229920000098 polyolefin Polymers 0.000 description 2
- 238000010526 radical polymerization reaction Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- RIOQSEWOXXDEQQ-UHFFFAOYSA-N triphenylphosphine Chemical compound C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1 RIOQSEWOXXDEQQ-UHFFFAOYSA-N 0.000 description 2
- HECLRDQVFMWTQS-RGOKHQFPSA-N 1755-01-7 Chemical compound C1[C@H]2[C@@H]3CC=C[C@@H]3[C@@H]1C=C2 HECLRDQVFMWTQS-RGOKHQFPSA-N 0.000 description 1
- OZAIFHULBGXAKX-UHFFFAOYSA-N 2-(2-cyanopropan-2-yldiazenyl)-2-methylpropanenitrile Chemical compound N#CC(C)(C)N=NC(C)(C)C#N OZAIFHULBGXAKX-UHFFFAOYSA-N 0.000 description 1
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- WYGWHHGCAGTUCH-UHFFFAOYSA-N 2-[(2-cyano-4-methylpentan-2-yl)diazenyl]-2,4-dimethylpentanenitrile Chemical compound CC(C)CC(C)(C#N)N=NC(C)(C#N)CC(C)C WYGWHHGCAGTUCH-UHFFFAOYSA-N 0.000 description 1
- 239000004342 Benzoyl peroxide Substances 0.000 description 1
- OMPJBNCRMGITSC-UHFFFAOYSA-N Benzoylperoxide Chemical compound C=1C=CC=CC=1C(=O)OOC(=O)C1=CC=CC=C1 OMPJBNCRMGITSC-UHFFFAOYSA-N 0.000 description 1
- 229930185605 Bisphenol Natural products 0.000 description 1
- 229920000089 Cyclic olefin copolymer Polymers 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical class OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 1
- YIVJZNGAASQVEM-UHFFFAOYSA-N Lauroyl peroxide Chemical compound CCCCCCCCCCCC(=O)OOC(=O)CCCCCCCCCCC YIVJZNGAASQVEM-UHFFFAOYSA-N 0.000 description 1
- 235000021355 Stearic acid Nutrition 0.000 description 1
- PJANXHGTPQOBST-VAWYXSNFSA-N Stilbene Natural products C=1C=CC=CC=1/C=C/C1=CC=CC=C1 PJANXHGTPQOBST-VAWYXSNFSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 150000008065 acid anhydrides Chemical class 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 150000001338 aliphatic hydrocarbons Chemical class 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 150000001408 amides Chemical class 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 1
- 239000003849 aromatic solvent Substances 0.000 description 1
- 125000003710 aryl alkyl group Chemical group 0.000 description 1
- 125000002511 behenyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 235000019400 benzoyl peroxide Nutrition 0.000 description 1
- 235000010290 biphenyl Nutrition 0.000 description 1
- 239000004305 biphenyl Substances 0.000 description 1
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical compound C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 238000010828 elution Methods 0.000 description 1
- 238000007720 emulsion polymerization reaction Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000003925 fat Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- LNEPOXFFQSENCJ-UHFFFAOYSA-N haloperidol Chemical compound C1CC(O)(C=2C=CC(Cl)=CC=2)CCN1CCCC(=O)C1=CC=C(F)C=C1 LNEPOXFFQSENCJ-UHFFFAOYSA-N 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 150000002460 imidazoles Chemical class 0.000 description 1
- 239000011256 inorganic filler Substances 0.000 description 1
- 229910003475 inorganic filler Inorganic materials 0.000 description 1
- 229940119170 jojoba wax Drugs 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 1
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 1
- 125000000913 palmityl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 150000002989 phenols Chemical class 0.000 description 1
- 150000003003 phosphines Chemical class 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000003505 polymerization initiator Substances 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 229910000077 silane Inorganic materials 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 229920002545 silicone oil Polymers 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000008117 stearic acid Substances 0.000 description 1
- 125000004079 stearyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- PJANXHGTPQOBST-UHFFFAOYSA-N stilbene Chemical compound C=1C=CC=CC=1C=CC1=CC=CC=C1 PJANXHGTPQOBST-UHFFFAOYSA-N 0.000 description 1
- 235000021286 stilbenes Nutrition 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 239000012756 surface treatment agent Substances 0.000 description 1
- 238000010557 suspension polymerization reaction Methods 0.000 description 1
- SGGROIVRVHNDJL-UHFFFAOYSA-N tert-butyl hexaneperoxoate Chemical compound CCCCCC(=O)OOC(C)(C)C SGGROIVRVHNDJL-UHFFFAOYSA-N 0.000 description 1
- 150000003512 tertiary amines Chemical class 0.000 description 1
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 1
- 238000001721 transfer moulding Methods 0.000 description 1
- 150000003918 triazines Chemical class 0.000 description 1
- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical compound [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 0.000 description 1
- 239000004711 α-olefin Substances 0.000 description 1
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- Epoxy Resins (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
Description
溶液重合は、常法で行われ、原料モノマー、開始剤、溶剤を所定量仕込み、例えば、溶液濃度が30〜70質量%程度で、重合温度50〜120℃でラジカル重合を行う。
開始剤としてはラジカル重合において通常使用される開始剤が用いられ、原料モノマーの仕込み合計量に対し、0.1〜20質量%の割合で開始剤が用いられる。開始剤としては、重合温度に適した半減期温度を有するものが好ましく、例えばベンゾイルパーオキサイド(10時間半減期温度:T10=74℃)、ラウロイルパーオキサイド(T10=62℃)、t−ブチルパーオキシヘキサノエート(T10=72℃)などの有機過酸化物、2,2´−アゾビス(2,4−ジメチルバレロニトリル)(T10=51℃)、2,2´−アゾビス(イソブチロニトリル)(T10=65℃)などのアゾ化合物を使うことができる。
溶剤としては、脂肪族系炭化水素や芳香族系炭化水素などの炭化水素、エチレングリコール誘導体などが挙げられる。この中でトルエンなどの芳香族溶剤は、溶解性に優れ、脱溶剤工程においても容易に除去できることから好ましい。
基準油脂分析試験法2.3.7.1-1996「オキシラン酸素定量方法(その1)」に基づき、試験溶剤のベンゼンをトルエンに替えて測定し、オキシラン酸素量を求めた。更に、下記式1に従いエポキシ当量(g/eq.)に換算し四捨五入により10の位まで求めた。なお、式1における16(g/eq.)はオキシラン酸素のエポキシ当量である。
東ソー(株)製GPC装置HLC−8220GPC、昭光通商(株)製GPCカラムShodex LF−804を使い、示差屈折計感度512×10-6RIU/ FS(35℃)、カラムチャンバー温度40℃、溶離液流量THF(テトラヒドロフラン)1mL/分、試料0.2質量%のTHF溶液100μL注入の条件下で測定し、試料のポリスチレン換算重量平均分子量を求め、四捨五入により千の位まで求めた。
攪拌装置、窒素ガス導入管、ジムロート還流管、温度計を装着した1L丸型無色透明ガラスセパラブルフラスコに、トルエン300g、メタクリル酸グリシジル(日油(株)製商品名「ブレンマーGH」)15g(0.11モル)、メタクリル酸ステアリル(日油(株)製商品名「ブレンマーSMA」)185g(0.55モル)を仕込み、常温下で攪拌しながら約1L/分の流量で15分間窒素置換した。窒素ガス流量を0.1L/分に落とし、油浴中でフラスコ内温を85℃まで昇温後、重合開始剤としてt−ブチルパーオキシヘキサノエート(日油(株)製の商品名「パーブチルO」)を2g添加して85℃で10時間熟成した。得られた反応溶液をステンレス製バットに移し、120℃の真空オーブン中で5時間かけてトルエンを減圧留去後、冷却することでメタクリル酸グリシジルとメタクリル酸ステアリルとの共重合体を得た。これを共重合体1とする。
GMA:メタクリル酸グリシジル、GA:アクリル酸グリシジル、VMA:メタクリル酸ベヘニル、VA:アクリル酸ベヘニル、SMA:メタクリル酸ステアリル、SA:アクリル酸ステアリル、CMA:メタクリル酸パルミチル、CA:アクリル酸パルミチル、BMA:メタクリル酸ブチル
なお、メタクリル酸ベヘニル、アクリル酸ベヘニル、メタクリル酸ステアリル、アクリル酸ステアリル、メタクリル酸パルミチル、アクリル酸パルミチル、メタクリル酸ブチルについては、日油(株)製商品名「ブレンマーVMA」、「ブレンマーVA」、「ブレンマーSMA」、「ブレンマーSA」、「ブレンマーCMA」、「ブレンマーCA」、「ブレンマーBMA」をそれぞれ使用した。
フェノールノボラック型エポキシ樹脂(エポキシ当量174)34.8質量部、フェノールノボラック樹脂(水酸基当量220、軟化点80℃)44.0質量部、トリフェニルホスフィン0.16質量部に対し、共重合体1〜11、カルナバワックス又はポリエチレンワックスを1.6質量部加え、90℃で溶融混合したエポキシ樹脂組成物を調製した。得られた溶融状態のエポキシ樹脂組成物を口径60mmφ×深さ15mmのアルミニウム製容器に20g入れた。
上述の離型性試験で評価の良かったものについて、離型剤の経時的な染み出しの抑制効果を評価した。得られた硬化物表面を、トルエンを染み込ませた布で拭いて洗浄し、硬化物を100℃のオーブン中で10時間静置した。その後、室温まで冷却してから硬化物表面の縦10mm×横10mmの正方形内を油性マジックで塗りつぶし、セロハンテープを貼り付けて、剥がした後の油性マジックのセロハンテープへの付着度合いで離型剤の染み出しの抑制効果を評価した。染み出し抑制の評価は、セロハンテープへの油性マジックの付着面積が塗りつぶした面積の20%未満を○、20%以上を×として、評価結果を表2に示した。参考例として、離型剤を添加しないエポキシ樹脂組成物についても同様の評価を行った。
Claims (1)
- (メタ)アクリル酸グリシジルと炭素数16〜22の直鎖アルキル(メタ)アクリル酸エステルとの共重合体であって、エポキシ当量が1,000〜4,000g/eq.であり、かつ、重量平均分子量が5,000〜500,000である共重合体からなるエポキシ樹脂用内添型離型剤。
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