JP2021042293A - 湿気硬化型ポリウレタンホットメルト樹脂組成物 - Google Patents
湿気硬化型ポリウレタンホットメルト樹脂組成物 Download PDFInfo
- Publication number
- JP2021042293A JP2021042293A JP2019164484A JP2019164484A JP2021042293A JP 2021042293 A JP2021042293 A JP 2021042293A JP 2019164484 A JP2019164484 A JP 2019164484A JP 2019164484 A JP2019164484 A JP 2019164484A JP 2021042293 A JP2021042293 A JP 2021042293A
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- JP
- Japan
- Prior art keywords
- moisture
- resin composition
- curable polyurethane
- polyurethane hot
- melt resin
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 150000003077 polyols Chemical class 0.000 claims abstract description 34
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- IQPQWNKOIGAROB-UHFFFAOYSA-N isocyanate group Chemical group [N-]=C=O IQPQWNKOIGAROB-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000013522 chelant Substances 0.000 claims abstract description 9
- 125000003118 aryl group Chemical group 0.000 claims abstract description 5
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- LGRFSURHDFAFJT-UHFFFAOYSA-N Phthalic anhydride Natural products C1=CC=C2C(=O)OC(=O)C2=C1 LGRFSURHDFAFJT-UHFFFAOYSA-N 0.000 description 1
- 239000005062 Polybutadiene Substances 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000002202 Polyethylene glycol Substances 0.000 description 1
- 229920001328 Polyvinylidene chloride Polymers 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
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- 239000006087 Silane Coupling Agent Substances 0.000 description 1
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- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
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- MQPPCKJJFDNPHJ-UHFFFAOYSA-K aluminum;3-oxohexanoate Chemical compound [Al+3].CCCC(=O)CC([O-])=O.CCCC(=O)CC([O-])=O.CCCC(=O)CC([O-])=O MQPPCKJJFDNPHJ-UHFFFAOYSA-K 0.000 description 1
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- 125000001797 benzyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])* 0.000 description 1
- NUMHJBONQMZPBW-UHFFFAOYSA-K bis(2-ethylhexanoyloxy)bismuthanyl 2-ethylhexanoate Chemical compound [Bi+3].CCCCC(CC)C([O-])=O.CCCCC(CC)C([O-])=O.CCCCC(CC)C([O-])=O NUMHJBONQMZPBW-UHFFFAOYSA-K 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
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- 239000000539 dimer Substances 0.000 description 1
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- 239000003822 epoxy resin Substances 0.000 description 1
- 125000001033 ether group Chemical group 0.000 description 1
- XYIBRDXRRQCHLP-UHFFFAOYSA-N ethyl acetoacetate Chemical compound CCOC(=O)CC(C)=O XYIBRDXRRQCHLP-UHFFFAOYSA-N 0.000 description 1
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- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
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- 239000011261 inert gas Substances 0.000 description 1
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- QXJSBBXBKPUZAA-UHFFFAOYSA-N isooleic acid Natural products CCCCCCCC=CCCCCCCCCC(O)=O QXJSBBXBKPUZAA-UHFFFAOYSA-N 0.000 description 1
- NIMLQBUJDJZYEJ-UHFFFAOYSA-N isophorone diisocyanate Chemical compound CC1(C)CC(N=C=O)CC(C)(CN=C=O)C1 NIMLQBUJDJZYEJ-UHFFFAOYSA-N 0.000 description 1
- 238000009940 knitting Methods 0.000 description 1
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- 238000003475 lamination Methods 0.000 description 1
- 239000011133 lead Substances 0.000 description 1
- 229960004488 linolenic acid Drugs 0.000 description 1
- KQQKGWQCNNTQJW-UHFFFAOYSA-N linolenic acid Natural products CC=CCCC=CCC=CCCCCCCCC(O)=O KQQKGWQCNNTQJW-UHFFFAOYSA-N 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
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- 125000001971 neopentyl group Chemical group [H]C([*])([H])C(C([H])([H])[H])(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- FVXBCDWMKCEPCL-UHFFFAOYSA-N nonane-1,1-diol Chemical compound CCCCCCCCC(O)O FVXBCDWMKCEPCL-UHFFFAOYSA-N 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 125000002347 octyl 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])[H] 0.000 description 1
- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid Chemical compound CCCCCCCC\C=C/CCCCCCCC(O)=O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 description 1
- 235000021313 oleic acid Nutrition 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
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- 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
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- WXZMFSXDPGVJKK-UHFFFAOYSA-N pentaerythritol Chemical compound OCC(CO)(CO)CO WXZMFSXDPGVJKK-UHFFFAOYSA-N 0.000 description 1
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- 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
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Landscapes
- Polyurethanes Or Polyureas (AREA)
- Adhesives Or Adhesive Processes (AREA)
Abstract
Description
温度計、攪拌機、不活性ガス導入口および還流冷却器を備えた四つ口フラスコに、ポリプロピレングリコール(数平均分子量;1,000、以下「PPG」と略記する。)を16質量部、ポリオエチレンポリオキシプロピレングリコール(数平均分子量;4,000、以下「EOPO」と略記する。)を20質量部、ポリアクリルポリオール(メチルメタクリレート、n−ブチルメタクリレート、及び2−ヒドロキシエチルメタクリレートの反応物、数平均分子量;20,000、以下「AcP」と略記する。)を16質量部、結晶性ポリエステルポリオール(1,6−ヘキサンジオール及びアジピン酸の反応物、数平均分子量;2,000、以下「HG/AA」と略記する。)を10質量部、結晶性ポリエステルポリオール(1,6−ヘキサンジオール及びドデカン二酸の反応物、数平均分子量;3,500、以下「HG/DDA」と略記する。)を10質量部、非晶性ポリエステルポリオール(ジエチレングリコール、ネオペンチルグリコール、1,6−ヘキサンジオール及びアジピン酸の反応物、数平均分子量;2,000、以下「非晶性PEs」と略記する。)を15質量部、2−エチルヘキサン酸ジルコニウム0.1質量部を仕込み、90℃で加熱することにより、水分含有量が0.05質量%以下となるまで脱水した。
次いで、容器内温度を60℃に冷却後、キシリレンジジイソシアネート(以下「XDI」と略記する。)13質量部を加え、110℃まで昇温して、イソシアネート基含有率が一定となるまで約3時間反応させ、イソシアネート基を有するウレタンプレポリマー(i−1)を得、湿気硬化型ポリウレタンホットメルト樹脂組成物を得た。前記ウレタンプレポリマー(i−1)のNCO%は2.5質量%であった。
実施例1において、2−エチルヘキサン酸ジルコニウムに代えて、2−エチルヘキサン酸バリウムを用いた以外は、実施例1と同様にして、湿気硬化型ポリウレタンホットメルト樹脂組成物を得た。
実施例1において、2−エチルヘキサン酸ジルコニウムに代えて、2−エチルヘキサン酸ビスマスを用いた以外は、実施例1と同様にして、湿気硬化型ポリウレタンホットメルト樹脂組成物を得た。
実施例1において、2−エチルヘキサン酸ジルコニウムに代えて、ネオデカン酸ネオジウムを用いた以外は、実施例1と同様にして、湿気硬化型ポリウレタンホットメルト樹脂組成物を得た。
実施例1において、ネオデカン酸ネオジムの使用量を0.1質量部から0.5質量部に変更した以外は、実施例1と同様にして、湿気硬化型ポリウレタンホットメルト樹脂組成物を得た。
実施例1において、2−エチルヘキサン酸ジルコニウムに代えて、アルミニウムキレート(ビス[エチル−3−(オキソ−κO)ブタノアト−κO’](2−プロパノラト)アルミニウム)を用いた以外は、実施例1と同様にして、湿気硬化型ポリウレタンホットメルト樹脂組成物を得た。
実施例1において、2−エチルヘキサン酸ジルコニウムに代えて、アルミニウムキレート(ジイソプロポキシアルミニウムエチルアセトアセテート)を用いた以外は、実施例1と同様にして、湿気硬化型ポリウレタンホットメルト樹脂組成物を得た。
実施例1において、2−エチルヘキサン酸ジルコニウムの使用量を0.1質量部から0質量部に変更した以外は、実施例1と同様にして、湿気硬化型ポリウレタンホットメルト樹脂組成物を得た。
実施例および比較例において、ポリオール等の数平均分子量は、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」
実施例及び比較例で得られた湿気硬化型ポリウレタンホットメルト樹脂組成物を、それぞれ120℃の温度で1時間溶融させた。該接着剤をポリエチレンテレフタレート(PET)シート上に厚さが100μmとなるようにアプリケーターを用いて塗布した。該塗布層の上に、金属板(アルミ板、又は、SUS板)を貼り合せ、圧着ローラーで圧着した。その後、23℃、湿度50%の条件下で7日間養生した後、株式会社島津製作所製の精密万能試験機「AG−10NX」を使用して接着強度(N/25mm)を測定し、金属基材に対する接着性を以下のように評価した。
「○」:接着強度が25(N/25mm)以上である。
「×」:接着強度が25(N/25mm)未満である。
実施例及び比較例で得られた湿気硬化型ポリウレタンホットメルト樹脂組成物を120℃で1時間溶融させた。該接着剤を離型紙上に厚さが100μmとなるようにアプリケーターを用いて塗布した後、23℃、湿度50%の条件下で7日間養生した。得られた硬化皮膜を、スガ試験機株式会社製フェードメーター「U48AU」(63℃、湿度50%)で100時間光照射した。光照射前後の色差(ΔE)を測定し、以下のように評価した。
「T」:ΔEが20未満である。
「F」:ΔEが20以上である。
Claims (6)
- ポリオール(A)及びポリイソシアネート(B)を原料とするイソシアネート基を有するウレタンプレポリマー(i)、及び、金属有機化合物(ii)を含有することを特徴とする湿気硬化型ポリウレタンホットメルト樹脂組成物。
- 前記ポリオール(A)が、ポリエーテルポリオール(a1)、ポリアクリルポリオール(a2)、結晶性ポリエステルポリオール(a3)、及び、非晶性ポリエステルポリオール(a4)からなる群より選ばれる1種以上のポリオールを含有するものである請求項1記載の湿気硬化型ポリウレタンホットメルト樹脂組成物。
- 前記ポリイソシアネート(B)が、芳香族ポリイソシアネートである請求項1又は2記載の湿気硬化型ポリウレタンホットメルト樹脂組成物。
- 前記芳香族ポリイソシアネートが、キシレンジイソシアネートである請求項3記載の湿気硬化型ポリウレタンホットメルト樹脂組成物。
- 前記ウレタンプレポリマー(i)のイソシアネート基含有率が、1〜8質量%の範囲である請求項1記載の湿気硬化型ポリウレタンホットメルト樹脂組成物。
- 前記金属有機化合物(ii)が、有機酸金属塩、及び/又は、アルミニウムキレート化合物である請求項1〜5のいずれか1項記載の湿気硬化型ポリウレタンホットメルト樹脂組成物。
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