JP2021127401A - ウレタン樹脂組成物、及び、多孔体の製造方法 - Google Patents
ウレタン樹脂組成物、及び、多孔体の製造方法 Download PDFInfo
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- JP2021127401A JP2021127401A JP2020023358A JP2020023358A JP2021127401A JP 2021127401 A JP2021127401 A JP 2021127401A JP 2020023358 A JP2020023358 A JP 2020023358A JP 2020023358 A JP2020023358 A JP 2020023358A JP 2021127401 A JP2021127401 A JP 2021127401A
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- Prior art keywords
- urethane resin
- porous body
- resin composition
- mass
- hydrocarbon
- Prior art date
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- 239000004215 Carbon black (E152) Substances 0.000 claims abstract description 20
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- NSMWYRLQHIXVAP-UHFFFAOYSA-N 2,5-dimethylpiperazine Chemical compound CC1CNC(C)CN1 NSMWYRLQHIXVAP-UHFFFAOYSA-N 0.000 description 1
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- RNLHGQLZWXBQNY-UHFFFAOYSA-N 3-(aminomethyl)-3,5,5-trimethylcyclohexan-1-amine Chemical compound CC1(C)CC(N)CC(C)(CN)C1 RNLHGQLZWXBQNY-UHFFFAOYSA-N 0.000 description 1
- YBRVSVVVWCFQMG-UHFFFAOYSA-N 4,4'-diaminodiphenylmethane Chemical compound C1=CC(N)=CC=C1CC1=CC=C(N)C=C1 YBRVSVVVWCFQMG-UHFFFAOYSA-N 0.000 description 1
- VPWNQTHUCYMVMZ-UHFFFAOYSA-N 4,4'-sulfonyldiphenol Chemical compound C1=CC(O)=CC=C1S(=O)(=O)C1=CC=C(O)C=C1 VPWNQTHUCYMVMZ-UHFFFAOYSA-N 0.000 description 1
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- CZMRCDWAGMRECN-UGDNZRGBSA-N Sucrose Chemical compound O[C@H]1[C@H](O)[C@@H](CO)O[C@@]1(CO)O[C@@H]1[C@H](O)[C@@H](O)[C@H](O)[C@@H](CO)O1 CZMRCDWAGMRECN-UGDNZRGBSA-N 0.000 description 1
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Classifications
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/28—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof by elimination of a liquid phase from a macromolecular composition or article, e.g. drying of coagulum
- C08J9/286—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof by elimination of a liquid phase from a macromolecular composition or article, e.g. drying of coagulum the liquid phase being a solvent for the monomers but not for the resulting macromolecular composition, i.e. macroporous or macroreticular polymers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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Abstract
Description
攪拌機、還流器、温度計を有する反応装置に、ポリエステルポリオール(1,4−ブタンジオール及びアジピン酸の反応物、数平均分子量;2,000)を100質量部、エチレングリコールを12質量部、N,N−ジメチルホルムアミド(以下、「DMF」と略記する。)を519質量部、及び、4,4’−ジフェニルメタンジイソシアネートを61質量部投入し、撹拌下60℃で6時間反応させ、引き続き、イソプロピルアルコールを1質量部投入して、更に60℃で1時間撹拌することによって、ウレタン樹脂(A−1)組成物を得た。
得られたウレタン樹脂(A−1)組成物は、固形分;25質量%、粘度;600dPa・s、ウレタン樹脂の重量平均分子量は188,100であった。
攪拌機、還流器、温度計を有する反応装置に、ポリエステルポリオール(エチレングリコール及びアジピン酸の反応物、数平均分子量;2,000)を65質量部、ポリテトラメチレングリコール(数平均分子量;2,000)を35質量部、1,4−ブタンジオールを20質量部、DMFを564質量部、及び、4,4’−ジフェニルメタンジイソシアネートを68質量部投入し、撹拌下60℃で6時間反応させ、引き続き、イソプロピルアルコールを1質量部投入して、更に60℃で1時間撹拌することによって、ウレタン樹脂(A−2)組成物を得た。
得られたウレタン樹脂(A−2)組成物は、固形分;25質量%、粘度;550dPa・s、ウレタン樹脂の重量平均分子量は168,000であった。
合成例で用いた原料ポリオールの数平均分子量、及び、ウレタン樹脂(A)の重量平均分子量 は、ゲル・パーミエーション・クロマトグラフィー(GPC)法により、下記の条件で測定した値を示す。
カラム:東ソー株式会社製の下記のカラムを直列に接続して使用した。
「TSKgel G5000」(7.8mmI.D.×30cm)×1本
「TSKgel G4000」(7.8mmI.D.×30cm)×1本
「TSKgel G3000」(7.8mmI.D.×30cm)×1本
「TSKgel G2000」(7.8mmI.D.×30cm)×1本
検出器:RI(示差屈折計)
カラム温度:40℃
溶離液:テトラヒドロフラン(THF)
流速:1.0mL/分
注入量:100μL(試料濃度0.4質量%のテトラヒドロフラン溶液)
標準試料:下記の標準ポリスチレンを用いて検量線を作成した。
東ソー株式会社製「TSKgel 標準ポリスチレン A−500」
東ソー株式会社製「TSKgel 標準ポリスチレン A−1000」
東ソー株式会社製「TSKgel 標準ポリスチレン A−2500」
東ソー株式会社製「TSKgel 標準ポリスチレン A−5000」
東ソー株式会社製「TSKgel 標準ポリスチレン F−1」
東ソー株式会社製「TSKgel 標準ポリスチレン F−2」
東ソー株式会社製「TSKgel 標準ポリスチレン F−4」
東ソー株式会社製「TSKgel 標準ポリスチレン F−10」
東ソー株式会社製「TSKgel 標準ポリスチレン F−20」
東ソー株式会社製「TSKgel 標準ポリスチレン F−40」
東ソー株式会社製「TSKgel 標準ポリスチレン F−80」
東ソー株式会社製「TSKgel 標準ポリスチレン F−128」
東ソー株式会社製「TSKgel 標準ポリスチレン F−288」
東ソー株式会社製「TSKgel 標準ポリスチレン F−550」
合成例1で得られたウレタン樹脂(A−1)組成物100質量部に対し、DMFを40質量部、成膜助剤として、炭素原子数12のイソパラフィン(東亜石油株式会社製「メルベイユ30」、密度;0.77g/cm3、以下「c1−1」と略記する。)を1質量部加えて配合液を作成し、厚さ(Wet)1mmとなるようにポリエチレンテレフタレート(PET)フィルムに塗布した。次いで、凝固浴(25℃の水)へ塗布基材を10分間浸漬させ、ウレタン樹脂を凝固させた。その後、この基材を50℃の水に60分間浸漬させて溶剤を洗浄した。洗浄後、基材を100℃で30分間熱風乾燥させ、多孔体を得た。
実施例1において、成膜助剤の種類を、炭素原子数12のイソパラフィン(出光興産株式会社製「IPソルベント1620」、密度;0.76g/cm3、以下「c1−2」と略記する。)に代えた以外は、実施例1と同様にして多孔体を得た。
実施例1において、成膜助剤の種類を、炭素原子数12のイソパラフィン(出光興産株式会社製「IPクリーンLX」、密度;0.74g/cm3、以下「c1−3」と略記する。)に代えた以外は、実施例1と同様にして多孔体を得た。
実施例1において、成膜助剤の種類を、炭素原子数16のイソパラフィン(出光興産株式会社製「IPソルベント2028」、密度;0.79g/cm3、以下「c1−4」と略記する。)に代えた以外は、実施例1と同様にして多孔体を得た。
実施例1において、ウレタン樹脂(A−1)組成物に代えて、ウレタン樹脂(A−2)組成物を用いた以外は実施例1と同様にして多孔体を得た。
実施例1において、成膜助剤の種類を、ヘキサン(以下「cR1−2」)に代えた以外は、実施例1と同様にして多孔体を得た。
実施例1において、成膜助剤の種類を、炭素原子数20のイソパラフィン(出光興産株式会社製「IPソルベント2835」、密度;0.82g/cm3、以下「cR1−1」と略記する。)に代えた以外は、実施例1と同様にして多孔体を得た。
実施例で得られた多孔体の断面状態を、日本電子株式会社製走査型電子顕微鏡「JSM−IT500」(倍率:100倍)で観察し、セル形状(細さ、均一性)を確認し、最大横幅が70μm以下のセルが全体の60%を占めていれば「○」、それ以外は「×」と評価した。
実施例で得られた多孔体について、JISL−1021−6に準拠して圧縮率評価を行った。具体的には、初荷重2kPaを30秒間かけた後の「標準圧力下における厚さ:t0」を測定し、次に、最終荷重98kPaの荷重を30秒間かけた後の「一定圧力下における厚さ:t1」を測定し、これを下記の式に適用して圧縮率を算出した。
圧縮率(%)=100×(t0−t1)/t0
これによって求められた圧縮率が20%以下であれば「○」、それ以外は「×」と評価した。
Claims (4)
- ウレタン樹脂(A)、溶剤(B)、及び、成膜助剤(C)を含有するウレタン樹脂組成物であって、
前記成膜助剤(C)が、炭素原子数が8〜18の範囲の炭化水素(c1)を含有することを特徴とするウレタン樹脂組成物。 - 前記炭化水素(c1)の含有量が、前記ウレタン樹脂(A)100質量部に対して、0.1〜30質量部の範囲である請求項1記載の多孔体の製造方法。
- 前記炭化水素(c1)が、イソパラフィンである請求項1又は2記載のウレタン樹脂組成物。
- 請求項1〜3のいずれか1項記載のウレタン樹脂組成物を湿式成膜することを特徴とする多孔体の製造方法。
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