JP6313180B2 - 樹脂粒子の分散液及び分散性樹脂粒子並びにそれらの製造方法 - Google Patents
樹脂粒子の分散液及び分散性樹脂粒子並びにそれらの製造方法 Download PDFInfo
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- JP6313180B2 JP6313180B2 JP2014201566A JP2014201566A JP6313180B2 JP 6313180 B2 JP6313180 B2 JP 6313180B2 JP 2014201566 A JP2014201566 A JP 2014201566A JP 2014201566 A JP2014201566 A JP 2014201566A JP 6313180 B2 JP6313180 B2 JP 6313180B2
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- 125000000000 cycloalkoxy group Chemical group 0.000 description 1
- PDXRQENMIVHKPI-UHFFFAOYSA-N cyclohexane-1,1-diol Chemical compound OC1(O)CCCCC1 PDXRQENMIVHKPI-UHFFFAOYSA-N 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
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- 125000004663 dialkyl amino group Chemical group 0.000 description 1
- 150000001983 dialkylethers Chemical class 0.000 description 1
- 150000004985 diamines Chemical class 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
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- 125000002147 dimethylamino group Chemical group [H]C([H])([H])N(*)C([H])([H])[H] 0.000 description 1
- GWZCCUDJHOGOSO-UHFFFAOYSA-N diphenic acid Chemical compound OC(=O)C1=CC=CC=C1C1=CC=CC=C1C(O)=O GWZCCUDJHOGOSO-UHFFFAOYSA-N 0.000 description 1
- SMVRDGHCVNAOIN-UHFFFAOYSA-L disodium;1-dodecoxydodecane;sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O.CCCCCCCCCCCCOCCCCCCCCCCCC SMVRDGHCVNAOIN-UHFFFAOYSA-L 0.000 description 1
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- 150000002148 esters Chemical class 0.000 description 1
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- 125000001301 ethoxy group Chemical group [H]C([H])([H])C([H])([H])O* 0.000 description 1
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- 125000003707 hexyloxy 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
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- 125000002768 hydroxyalkyl group Chemical group 0.000 description 1
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- 229910052740 iodine Inorganic materials 0.000 description 1
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- 229910052751 metal Inorganic materials 0.000 description 1
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- 229910000000 metal hydroxide Inorganic materials 0.000 description 1
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- 229940098779 methanesulfonic acid Drugs 0.000 description 1
- 125000000956 methoxy group Chemical group [H]C([H])([H])O* 0.000 description 1
- 125000001160 methoxycarbonyl group Chemical group [H]C([H])([H])OC(*)=O 0.000 description 1
- 125000002816 methylsulfanyl group Chemical group [H]C([H])([H])S[*] 0.000 description 1
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- KYTZHLUVELPASH-UHFFFAOYSA-N naphthalene-1,2-dicarboxylic acid Chemical compound C1=CC=CC2=C(C(O)=O)C(C(=O)O)=CC=C21 KYTZHLUVELPASH-UHFFFAOYSA-N 0.000 description 1
- ABMFBCRYHDZLRD-UHFFFAOYSA-N naphthalene-1,4-dicarboxylic acid Chemical compound C1=CC=C2C(C(=O)O)=CC=C(C(O)=O)C2=C1 ABMFBCRYHDZLRD-UHFFFAOYSA-N 0.000 description 1
- DFFZOPXDTCDZDP-UHFFFAOYSA-N naphthalene-1,5-dicarboxylic acid Chemical compound C1=CC=C2C(C(=O)O)=CC=CC2=C1C(O)=O DFFZOPXDTCDZDP-UHFFFAOYSA-N 0.000 description 1
- RXOHFPCZGPKIRD-UHFFFAOYSA-N naphthalene-2,6-dicarboxylic acid Chemical compound C1=C(C(O)=O)C=CC2=CC(C(=O)O)=CC=C21 RXOHFPCZGPKIRD-UHFFFAOYSA-N 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 125000000449 nitro group Chemical group [O-][N+](*)=O 0.000 description 1
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- 235000005985 organic acids Nutrition 0.000 description 1
- 235000006408 oxalic acid Nutrition 0.000 description 1
- 125000000951 phenoxy group Chemical group [H]C1=C([H])C([H])=C(O*)C([H])=C1[H] 0.000 description 1
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- 239000004014 plasticizer Substances 0.000 description 1
- 229920006122 polyamide resin Polymers 0.000 description 1
- 229920000768 polyamine Polymers 0.000 description 1
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- 239000004431 polycarbonate resin Substances 0.000 description 1
- 230000000379 polymerizing effect Effects 0.000 description 1
- 229920005862 polyol Polymers 0.000 description 1
- 150000003077 polyols Chemical class 0.000 description 1
- 229920000259 polyoxyethylene lauryl ether Polymers 0.000 description 1
- 229920002503 polyoxyethylene-polyoxypropylene Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
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- 239000000843 powder Substances 0.000 description 1
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- FVSKHRXBFJPNKK-UHFFFAOYSA-N propionitrile Chemical compound CCC#N FVSKHRXBFJPNKK-UHFFFAOYSA-N 0.000 description 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
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- 229920006395 saturated elastomer Polymers 0.000 description 1
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 1
- 235000017557 sodium bicarbonate Nutrition 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- BTURAGWYSMTVOW-UHFFFAOYSA-M sodium dodecanoate Chemical compound [Na+].CCCCCCCCCCCC([O-])=O BTURAGWYSMTVOW-UHFFFAOYSA-M 0.000 description 1
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- WOZVHXUHUFLZGK-UHFFFAOYSA-N terephthalic acid dimethyl ester Natural products COC(=O)C1=CC=C(C(=O)OC)C=C1 WOZVHXUHUFLZGK-UHFFFAOYSA-N 0.000 description 1
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- 125000003944 tolyl group Chemical group 0.000 description 1
- 125000003258 trimethylene group Chemical group [H]C([H])([*:2])C([H])([H])C([H])([H])[*:1] 0.000 description 1
- QDSWHSQBAUPQGK-UHFFFAOYSA-K trisodium;dodecyl hydrogen phosphate;dodecyl phosphate Chemical compound [Na+].[Na+].[Na+].CCCCCCCCCCCCOP(O)([O-])=O.CCCCCCCCCCCCOP([O-])([O-])=O QDSWHSQBAUPQGK-UHFFFAOYSA-K 0.000 description 1
- 239000006097 ultraviolet radiation absorber Substances 0.000 description 1
- PXXNTAGJWPJAGM-UHFFFAOYSA-N vertaline Natural products C1C2C=3C=C(OC)C(OC)=CC=3OC(C=C3)=CC=C3CCC(=O)OC1CC1N2CCCC1 PXXNTAGJWPJAGM-UHFFFAOYSA-N 0.000 description 1
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Landscapes
- Processes Of Treating Macromolecular Substances (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Polyesters Or Polycarbonates (AREA)
Description
本発明の樹脂粒子の分散液は、フルオレン骨格を有する樹脂を良溶媒に溶解させた樹脂溶液と、貧溶媒とをそれぞれ液体状態で、互いに交差する方向から合流させることにより生成できる。
樹脂としては、フルオレン骨格を含む樹脂であればよく、例えば、ポリエステル樹脂、ポリカーボネート樹脂、ポリアミド樹脂、ポリウレタン樹脂などの熱可塑性樹脂が例示できる。
貧溶媒としては、良溶媒と混和(又は相溶)する溶媒であれば特に限定されず、例えば、有機溶媒[例えば、アルコール類(例えば、メタノール、エタノール、イソプロパノールなどのC1−4アルカノール)などの水性溶媒、エステル類(例えば、酢酸メチル、酢酸エチルなど)、ケトン類(例えば、メチルイソブチルケトンなど)、鎖状エーテル類(例えば、ジエチルエーテル、ジイソプロピルエーテルなどのジアルキルエーテル)、ニトリル類(例えば、アセトニトリル、プロピオニトリルなど)、炭化水素類(例えば、ヘキサン、シクロヘキサンなどの脂肪族炭化水素類、ベンゼンなどの芳香族炭化水素類など)などの非水性溶媒]、水などが例示できる。これらの貧溶媒は単独で又は2種以上組み合わせて使用できる。これらの貧溶媒は、水性溶媒置換工程で、置換する水性溶媒(特に、水)とは異なる有機溶媒が好ましく、特に、ニトリル類などの水溶性有機溶媒であってもよい。
本発明の方法では、液体状態で、前記樹脂溶液及び前記貧溶媒を互いに交差する方向から合流させて混合することで、樹脂粒子を析出(樹脂を粒子化)させ、樹脂粒子を含む分散液を得ることができる。この方法では、樹脂溶液及び貧溶媒の形態が、憤霧液などの液滴(粒子状の液)の形態ではなく、液体状態であるため、衝突効率を向上できる。また、樹脂溶液及び貧溶媒のいずれか一方を他方に加えて(又は添加して)混合するのではなく、両者を合流させて混合するため、生産規模が拡大しても、短時間で均一に混合(又は衝突混合)できる。すなわち、粒子径のバラツキの少ない樹脂粒子の分散液を効率良く生成できる。
前記樹脂粒子の分散液は、前記良溶媒及び貧溶媒の混合溶媒を水性溶媒に置換して水性分散液(樹脂粒子が水性溶媒に分散した分散液)を得ることもできる。
本発明の分散液の樹脂粒子は、水性溶媒に置換しても樹脂粒子の形態(例えば、粒子径)を維持できるため、水性分散液の樹脂粒子も粒子径が小さく、かつバラツキが小さい。すなわち、水性分散液の樹脂粒子の平均粒子径及び変動係数は、前記分散液の樹脂粒子と同様の範囲である。
樹脂粒子は、粒子サイズが小さくなればなるほど水性分散性が低くなり、特にナノメーターサイズの粒子は水性溶媒(例えば、水)に分散させるのが困難である場合が多い。しかし、本発明では、水性溶媒の存在下、前記製造方法で得られたフルオレン骨格を有する樹脂粒子を界面活性剤で処理(吸着処理)することにより、水性溶媒(例えば、水)に簡便に再分散可能な分散性樹脂粒子を得ることができる。
前記分散性樹脂粒子は、表面が前記界面活性剤で処理(又は吸着処理)された粒子であり、ナノメーターサイズの粒子であっても、水性溶媒(例えば、水)に簡便に再分散できる。
実施例5、6及び比較例2、3、4で得られた水分散液から5gを抜き取り、メンブレンフィルタ−(10μm)を用いて吸引濾過を行い、メンブレンフィルタに捕捉されなかったものを水分散性が良好、捕捉されたものを水分散性が不良として評価した。
粒度分布測定装置(マルバーン社製、「Zetasizer Nano ZS」)を用いて、蒸留水による希釈により10重量%の分散液を作製し、平均粒子径を求めた。
走査型電子顕微鏡(日本電子社製、「ISW-6700F」)を用いて、分散液のSEM観察を行い、粒子の形状を観察した。
9,9−ビスフェニルフルオレン骨格を有する(9,9−ビス[4−(2−ヒドロキシエトキシ)フェニル]フルオレンをジオール成分として含む)ポリエステル樹脂(大阪ガスケミカル(株)製、「OKP4」)5gをテトラヒドロフラン(以下、THF)95gに溶かし、5重量%のTHF樹脂溶液100gを調製した。1LセパラブルフラスコにY字管を連結し、Y字管の一方の側からTHF樹脂溶液100g及び他方の側からアセトニトリル100gを両者ともに20g/分の流量[流量比(THF樹脂溶液:アセトニトリル)=1:1]で5分間流して合流させ、樹脂粒子を含む有機溶媒分散液200gを得た。得られた有機溶媒分散液を減圧濃縮しつつ、途中で水100gを加え、分散液の重量が100gになるまで減圧濃縮し、水分散液を得た。水分散液の樹脂粒子の収率は94%、平均粒子径は183.2nmであった。得られた水分散液のSEM写真を図2に示し、粒度分布を図7に示した。
アセトニトリル200gを40g/分の流量[流量比(THF樹脂溶液:アセトニトリル)=1:2]で5分間流して合流させたこと以外は、実施例1と同様にして、水分散液を得た。水分散液の樹脂粒子の収率は93.1%、平均粒子径は163.1nmであった。得られた水分散液のSEM写真を図3に示し、粒度分布を図7に示した。
アセトニトリル300gを60g/分の流量[流量比(THF樹脂溶液:アセトニトリル)=1:3]で5分間流して合流させたこと以外は、実施例1と同様にして、水分散液を得た。水分散液の樹脂粒子の収率は85.9%、平均粒子径は135.1nmであった。得られた水分散液のSEM写真を図4に示し、粒度分布を図7に示した。
アセトニトリル400gを80g/分の流量[流量比(THF樹脂溶液:アセトニトリル)=1:4]で5分間流して合流させたこと以外は、実施例1と同様にして、水分散液を得た。水分散液の樹脂粒子の収率は94.7%、平均粒子径は129.1nmであった。得られた水分散液のSEM写真を図5に示し、粒度分布を図7に示した。
9,9−ビスフェニルフルオレン骨格を有するポリエステル樹脂(大阪ガスケミカル(株)製、「OKP4」)5gをTHF95gに溶かし、5重量%のTHF樹脂溶液100gを調製した。1LセパラブルフラスコにあらかじめTHF樹脂溶液100gを入れておき、さらに、アセトニトリル300gを60g/分の流量で加えて、樹脂粒子を含む有機溶媒分散液を得た。得られた有機溶媒分散液を減圧濃縮しつつ、途中で水100gを加え、分散液の重量が100gになるまで減圧濃縮し、水分散液を得た。水分散液の樹脂粒子の収率は92%、平均粒子径は946.5nmであった。得られた水分散液のSEM写真を図6に示し、粒度分布を図7に示した。
アセトニトリル300gを60g/分の流量[流量比(THF樹脂溶液:アセトニトリル)=1:3]で5分間流して合流させ、得られた樹脂粒子5gを含む有機溶媒分散液400gに、28%アンモニア水を樹脂粒子に対して5重量%添加したこと以外は、実施例1と同様にして、水分散液を得た。水分散液の樹脂粒子の収率は85.6%、平均粒子径は228.5nmであった。水分散性評価の結果は良好であった。得られた水分散液の粒度分布を図8に示した。
28%アンモニア水の代わりに、ドデシルベンゼンスルホン酸ナトリウム(花王(株)製、「ネオペレックスG−65」)を樹脂粒子に対して5重量%添加したこと以外は、実施例5と同様にして、水分散液を得た。多くの沈降物が生成し、得られた水分散液の樹脂粒子の収率は11.3%、平均粒子径は1028nmであった。水分散性評価の結果は良好であった。得られた水分散液の粒度分布を図8に示した。
実施例1で得られた水分散液に1.7%リン酸2.5gを加えて攪拌すると、樹脂粒子が凝集して沈降した。水分散液のpHは2.5であった。沈降した樹脂粒子を水で濾過洗浄して回収し、湿潤した樹脂粒子1.3g(固形分0.5g)にドデシルベンゼンスルホン酸ナトリウム(花王(株)製、「ネオペレックスG−65」)0.1gを添加し、水9.4gを加えて超音波洗浄機にて20分間分散させた。さらに超音波ホモジナイザで2分間再分散化処理を行った。得られた分散液をメンブレンフィルタ−(10μm)で吸引濾過すると、微粒子はフィルターを通過し、白濁したろ液が得られた。すなわち、水分散性は良好であった。
ドデシルベンゼンスルホン酸ナトリウムに代えて、エチレングリコール(関東化学社製)0.1gを使用したこと以外は、実施例6と同様にして処理を行った分散液を得て、メンブレンフィルタ−(10μm)を用いて吸引濾過を行うと、微粒子はフィルターに捕捉され、透明なろ液が得られた。すなわち、水分散性は不良であった。
ドデシルベンゼンスルホン酸ナトリウムを添加しないこと以外は、実施例6と同様にして処理を行った分散液を得て、メンブレンフィルタ−(10μm)を用いて吸引濾過を行うと、微粒子はフィルターに捕捉され、透明なろ液が得られた。すなわち、水分散性は不良であった。
2、3…供給管
2a、3a、4a…流路
4…混合管
5…受器
6…合流部
Claims (10)
- フルオレン骨格を有する樹脂を良溶媒に溶解させた樹脂溶液と、貧溶媒とをそれぞれ液体状態で、互いに交差する方向から合流させて、樹脂粒子の分散液を製造する方法であって、
塩基の存在下、前記分散液の良溶媒及び貧溶媒を含む混合溶媒を蒸発させつつ、水性溶媒を添加して前記混合溶媒を水性溶媒に置換し、樹脂粒子が水性溶媒に分散した分散液を製造する方法。 - 複数の流路のうち、少なくとも1つの流路から樹脂溶液を供給しつつ、少なくとも1つの流路から貧溶媒を供給し、合流部で合流させる請求項1に記載の製造方法。
- 樹脂溶液に対して貧溶媒を60〜120°の交差角で合流させる請求項1又は2に記載の製造方法。
- 樹脂溶液の流量(重量部/分)と貧溶媒の流量(重量部/分)との流量比が、前者/後者=1/0.1〜1/50である請求項1〜3のいずれかに記載の製造方法。
- 樹脂溶液において、フルオレン骨格を有する樹脂の濃度が、0.5〜20重量%である請求項1〜4のいずれかに記載の製造方法。
- 樹脂溶液中の樹脂の流量(重量部/分)と貧溶媒の流量(重量部/分)との流量比が、前者/後者=1/1〜1/500である請求項1〜5のいずれかに記載の製造方法。
- 樹脂粒子が、9,9−ビスアリールフルオレン骨格を有するポリエステル樹脂である請求項1〜6のいずれかに記載の製造方法。
- 樹脂粒子がナノメーターサイズである請求項1〜7のいずれかに記載の製造方法。
- 塩基が少なくともアンモニア及び/又はアミンである請求項1〜8のいずれかに記載の製造方法。
- 塩基を樹脂粒子100重量部に対して0.01〜30重量部の割合で添加する請求項1〜9のいずれかに記載の製造方法。
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