JP7101183B2 - 耐薬品性を有するポリウレタン接着剤 - Google Patents
耐薬品性を有するポリウレタン接着剤 Download PDFInfo
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- JP7101183B2 JP7101183B2 JP2019546925A JP2019546925A JP7101183B2 JP 7101183 B2 JP7101183 B2 JP 7101183B2 JP 2019546925 A JP2019546925 A JP 2019546925A JP 2019546925 A JP2019546925 A JP 2019546925A JP 7101183 B2 JP7101183 B2 JP 7101183B2
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- weight
- sensitive adhesive
- pressure
- polyurethane
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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
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/30—Adhesives in the form of films or foils characterised by the adhesive composition
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
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Description
nは、少なくとも2、3、4、又は5であり、
エステル基置換基は、環のオルト-位又はメタ-位に結合している]を有する。
ポリウレタン分子量を決定する方法
化合物の分子量分布を、ゲル浸透クロマトグラフィー(GPC)を用いて特定した。Waters Corporation(Milford,MA,USA)から入手したGPC計装は、高圧液体クロマトグラフィーポンプ(モデル 1515HPLC)、オートサンプラー(モデル717)、UV検出器(モデル2487)及び屈折率検出器(モデル2410)を備えていた。クロマトグラフには、Varian Inc.(Palo Alto,CA,USA)から市販の5マイクロメートルのPL gel MIXED-Dカラムを2個取り付けた。乾燥させたポリマー試料を1.0%(重量/体積)の濃度でテトラヒドロフランに溶解させて、VWR International(West Chester,PA,USA)から市販の0.2マイクロメートルのポリテトラフルオロエチレンフィルターを通して濾過し、ポリマー溶液の試料を調製した。得られた試料をGPCに注入し、35℃に維持してカラムを通過させて1分当たり1mLの流量で溶出した。線形最小二乗法により、ポリスチレン標準でシステムを校正して、標準曲線を作成した。各試料に関し、この標準曲線と比較して重量平均分子量(Mw)及び多分散指数(重量平均分子量を数平均分子量(Mn)により除算したもの)を計算した。
接着テープ試料試験ストリップは、イージーライナー、典型的にはRF02Nを除去し、接着剤上に2mil(50マイクロメートル)のPETフィルムを積層し、次いで、試験ストリップを25.6mm×12.7mmに切り取ることによって、調製した。各接着剤タイプ/パネルのために2つの複製物を調製した。密着ライナーを除去した後、露出した接着剤表面をフロートガラス基材の長さに沿って接着し、5回圧延した。室温(25℃)で50%相対湿度(RH)にて24時間コンディショニングした後、試験試料を65℃及び90%RHで72時間保持し、次いで、接着試験前に24時間、一定温度(25℃)の室内に戻した。1000Nロードセルを取り付けた引張試験機(MTS Insight,MTS Systems,Corporation,Eden Prairie,MNから入手可能)を使用して、1分当たり300mmのクロスヘッド速度、下部つかみ具及び上部つかみ具で把持した試験片に対し180°の角度にて、剥離接着強度を評価した。
調製した各接着剤転写テープ試料から試料を調製するため、寸法0.5インチ×0.5インチ(1.27cm×1.27cm)で試験ストリップを切り出した。実施例1~12では、剥離ライナーを接着剤転写テープの両面から取り外し、テープを2枚のスライドガラスの間に接着した(テープの厚さに対応する縁部が露出するように)。接着剤転写テープによって接着されたスライドガラスを、室温(RT、約23℃)で15分間放置し、ペトリ皿に置いた。実施例13~14では、片面上の剥離ライナーを取り外し、試験ストリップをペトリ皿の底面に固定(固着)した。試験ストリップの第2の露出面上の剥離ライナーを取り外した(上面及び縁部が露出するように)。取り付けられた試料試験ストリップを入れたペトリ皿を、室温(RT、約23℃)で15分間放置した。次に、試料(接着剤又は試験ストリップを含むスライドガラス)を、オレイン酸、Banana Boat日焼け止め剤、又はイソプロピルアルコール(IPA)と水との重量比75:25(IPA/H2O)の混合物のいずれかに、70℃にて72時間浸漬した。オレイン酸又はIPA/H2O混合物に対する接着剤試料の耐性を、以下の指針を用いて評価し記録した。試料は、72時間後に膨潤、変色、又は気泡が発生しなかった場合に「5」として評価し、バルクがなお透明であるが、試料が縁領域の周りにわずかな曇りを有していたときに「3」と評価し、試料に膨潤、変色及び気泡が観察された場合は「1」と評価した。
ヘイズ測定を、透過モードのHunterLab(Reston,VA)UltrascanPro機器を使用して行った。試料を、およそ長さ5cm×長さ10cmに切断した。キャリアライナーの1つを取り外し、試料を、1mm厚のガラス板の透明な断片に積層した。次に、もう一方のライナーを取り外し、試料をUltrascanPro内に置き、試料及びガラスアセンブリの透過率を測定した。
試験される乾燥接着剤の既知の重量を、予め計量されたスクリーンバスケット上に置いた。ポリマー及びスクリーンを酢酸エチル中に浸し、24時間浸漬させた。浸漬後、スクリーン上の任意の残りのポリマーをより清浄な溶媒で洗浄し、70℃で20分間乾燥させた。乾燥後、試料を再度秤量して、スクリーン上に残ったポリマーの重量を得た。安定した乾燥重量が得られるまで、この手順を繰り返した。ゲル含有量は、浸漬後のスクリーン上に残っているポリマーの重量を、ポリマーの元の重量で除算し、100を乗じたものとして算出した。
環境老化試料を調製するために、イージーライナー(RF02N)を最初に剥がし、2milの厚さのPETフィルムで置き換えた。次いで、試料を2×4インチサイズの小片に切断し、それらの接着片の密着ライナー(J9など)を除去し、試料をスライドガラス上に積層した。室温で24時間放置した後、試料を85℃及び湿度85%のオーブンに一定時間移した。以下の観察のいずれかが見出された場合、例えば、接着フィルムが曇り(1%超)、気泡が発生し、接着剤が重力(いわゆる滑り)によってその元の位置から滑り落ちる場合、及びPET/ガラスの縁部から滲み出してしまう場合には、損傷として記録した。
機械的撹拌機、凝縮器、及び窒素導入口を取り付けた樹脂製反応容器に、50.0gのヒドロキシル基を末端にもつポリエステルPH-56(ヒドロキシル価56mg KOH/g)と、10.0gのMEKと、を入れた。この溶液を75℃に加熱した後、撹拌しながら2.8gのDBTDAの1wt%MEK溶液と、6.256gのMODUR MLQと、を添加した。2時間の反応後、20gのMEKを添加し、系を希釈した(系の粘度を低下させた)。約10時間、又はFT-IRにより遊離NCO基が観察されなくなるまで、温度を75℃に維持した。最後に、26.5gのMEKを添加して、固形分を50重量%以下に調節し、濁りのない透明なポリウレタンPSA溶液を得た。CExAのMw及び多分散性は、それぞれ、上記のGPCによって測定したところ、それぞれ、85K及び1.98であった。
機械的撹拌機、凝縮器、熱電対、及び窒素導入口を取り付けた樹脂製反応容器に、100.0gのヒドロキシル基を末端に有するポリエステルPH-56(ヒドロキシル価57mg KOH/g)、1.0gのDMPA-0135LV2、1.0gのYMER N120、及び30.0gのMEKを添加した。溶液を撹拌しながら70℃まで加熱した後、0.05gのDBTDA及び9.23gのDESMODUR Hを添加した。次いで、反応が完了するまで温度を80±2℃に維持した。反応中、所望の量のMEKを系に添加して、系を希釈した(すなわち、系の粘度を低下させた)。イソシアネート基が存在しなくなれば、反応が完了し、これを、2274cm-1付近でのNCOピークの消失について、FT-IRを使用してモニターした。最後に、固形分40重量%の透明な粘稠溶液を得た。GPCデータは上記のようにして得た:すなわち、Mn=60858、Mw=148224、Mp=96178及びPd=2.43であった。
機械的撹拌機、凝縮器、熱電対、及び窒素導入口を取り付けた樹脂製反応容器に、106.0gのヒドロキシル基を末端に有するポリエステルPH-56(ヒドロキシル価57mg KOH/g)、1.8gのYMER N120、及び30.0gのMEKを添加した。溶液を撹拌しながら70℃まで加熱した後、0.05gのDBTDA及び9.39gのDESMODUR Hを添加した。次いで、反応が完了するまで温度を80±2℃に維持した。反応中、所望の量のMEKを系に添加して、系を希釈した(すなわち、系の粘度を低下させた)。イソシアネート基が存在しなくなれば、反応が完了し、これを、2274cm-1付近でのNCOピークの消失について、FT-IRを使用してモニターした。最後に、固形分40重量%の透明な粘稠溶液を得た。GPCデータは上記のようにして決定した:すなわち、Mn=53233、Mw=106654、Mp=89260、及びPd=2.0であった。
機械的撹拌機、凝縮器、熱電対、及び窒素導入口を取り付けた樹脂製反応容器に、100.0gのヒドロキシル基を末端に有するポリエステルPH-56(ヒドロキシル価57mg KOH/g)、0.29gのDMPA、5.18gのYMER N120、及び30.0gのMEKを添加した。溶液を撹拌しながら70℃まで加熱した後、0.06gのDBTDA及び9.44gのDESMODUR Hを添加した。次いで、反応が完了するまで温度を80±2℃に維持した。反応中、所望の量のMEKを系に添加して、系を希釈した(すなわち、系の粘度を低下させた)。イソシアネート基が存在しなくなれば、反応が完了し、これを、2274cm-1付近でのNCOピークの消失について、FT-IRを使用してモニターした。最後に、固形分40重量%の透明な粘稠溶液を得た。GPCデータは上記のようにして決定した:すなわち、Mn=42072、Mw=81940、Mp=68480、及びPd=1.95であった。
機械的撹拌機、凝縮器、熱電対、及び窒素導入口を取り付けた樹脂製反応容器に、100.0gのPRIPLAST 1838(ヒドロキシル価56mg KOH/g)、2.9gのYMER N120、30.0gのMEK及び0.29gのBAGDM並びに0.04gのブチル化ヒドロキシトルエンを添加した。溶液を撹拌しながら80℃まで加熱した後、0.06gのDBTDA及び13.05gのTMXDIを添加した。次いで、反応が完了するまで、温度を80±2℃に維持した。反応中、所望の量のMEKを系に添加して、系を希釈した(すなわち、系の粘度を低下させた)。イソシアネート基が存在しなくなれば、反応が完了し、これを、2274cm-1付近でのNCOピークの消失について、FT-IRを使用してモニターした。最後に、固形分40重量%の透明な粘稠溶液を得た。GPCデータは上記のようにして決定した:すなわち、Mn=21036、Mw=110502、Mp=31589、及びPd=5.25であった。
機械的撹拌機、凝縮器、熱電対、及び窒素導入口を取り付けた樹脂製反応容器に、100.0gのPRIPLAST 1838(ヒドロキシル価56mg KOH/g)、100gの57mg KOH/gのヒドロキシル価を有するPRIPLAST 1900、6.0gのYMER N120、30.0gのMEK及び0.59gのBAGDM並びに0.072gのブチル化ヒドロキシトルエンを添加した。溶液を撹拌しながら80℃まで加熱した後、0.06gのK-DBTDA及び30.99gのTMXDIを添加した。次いで、FT-IRによりNCOピーク強度が観察されなくなるまで、温度を80±2℃に維持した。次いで、1.75gの2-メチル-1,3-プロパンジオールを鎖延長のために添加した。反応中、所望の量のMEKを系に添加して、系を希釈した(すなわち、系の粘度を低下させた)。イソシアネート基が存在しなくなれば、反応を完了し、これを、2274cm-1付近でのNCOピークの消失について、FT-IRを使用してモニターした。最後に、固形分40重量%の透明な粘稠溶液を得た。GPCデータは上記のようにして決定した:すなわち、Mn=29000、Mw=94173、Mp=41792、及びPd=3.35であった。
機械的撹拌機、凝縮器、及び窒素導入口を取り付けた樹脂製反応容器に、205gのPRIPLAST 1838(ヒドロキシル価56mg KOH/g)、5.9gのYMER N120、0.59gのBAGM、及び50.0gのMEKを添加した。溶液を撹拌しながら80℃まで加熱した後、0.12gのK-KAT XC B221及び27.84gのDESMODUR Wを添加した。次いで、温度を80±2℃に維持して、アクリレート含有ポリウレタンを得た。反応中、所望の量のMEKを系に添加して、系を希釈した(すなわち、系の粘度を低下させた)。イソシアネート基が存在しなくなれば、反応が完了し、これを、2274cm-1付近でのNCOピークの消失について、FT-IRを使用してモニターした。最後に、固形分50重量%の透明な粘稠溶液を得た。GPCデータは上記のようにして決定した:すなわち、Mn=23323、Mw=123304、Mp=40131、及びPd=5.28であった。
8オンスの褐色のジャー中で、実施例6に記載されるような100gのポリウレタンポリマー溶液(MEK中の50重量%固形分)、0.6gのIrgacure 184(MEK中の10重量%)、0.5gのKBM-403(MEK中の10重量%)、及び1.0gのXR-5580(供給時に50重量%)を一緒に混合した。混合物を密封し、ローラーミキサー上に一晩置いた。
8オンスの褐色のジャー中で、実施例6に記載されるような80gのポリウレタンポリマー溶液、0.8gのIrgacure 184(MEK中の10重量%)、0.4gのKBM-403(MEK中の10重量%)、4.0gのCN9782(MEK中の50重量%)、及び0.8gのXR-5580(供給時に50重量%)を一緒に混合した。混合物を密封し、ローラーミキサー上に一晩置いた。
8オンスの褐色のジャー中で、実施例6に記載されるような80gのポリウレタンポリマー溶液、0.8gのIrgacure 184(MEK中の10重量%)、0.4gのKBM-403(MEK中の10重量%)、1.6gのCN983(MEK中に50重量%)、4.0gのCN9782(MEK中の50重量%)、及び0.8gのXR-5580(供給時に50重量%)を一緒に混合した。混合物を密封し、ローラーミキサー上に一晩置いた。
8オンスの褐色のジャー中で、実施例6に記載されるような80gのポリウレタンポリマー溶液、0.8gのIrgacure 184(MEK中の10重量%)、0.4gのKBM-403(MEK中の10重量%)、4.0gのCN9178(MEK中の50重量%)、及び0.8gのXR-5580(供給時に50重量%)を一緒に混合した。混合物を密封し、ローラーミキサー上に一晩置いた。
機械的撹拌機、凝縮器、熱電対、及び窒素導入口を取り付けた樹脂製反応容器に、160.0gのPRIPLAST 1838(ヒドロキシル価56mg KOH/g)、40gの57mg KOH/gのヒドロキシル価を有するPRIPLAST 1900、6.0gのYMER N120、30.0gのMEK及び0.74gのBAGDM並びに0.072gのブチル化ヒドロキシトルエンを添加した。溶液を撹拌しながら80℃まで加熱した後、0.12gのDBTDA及び30.60gのTMXDIを添加した。次いで、FT-IRによりNCOピーク強度変化が観察されなくなるまで、温度を80±2℃に維持した。次いで、1.5gの2-メチル-1,3-プロパンジオールを鎖延長のために添加した。反応中、所望の量のMEKを系に添加して、系を希釈した(すなわち、系の粘度を低下させた)。イソシアネート基が存在しなくなれば、反応が完了し、これを、2274cm-1付近でのNCOピークの消失について、FT-IRを使用してモニターした。最後に、固形分45重量%の透明な粘稠溶液を得た。GPCデータは上記のようにして決定した:すなわち、Mn=34249、Mw=173596、及びPd=4.98であった。
8オンスの褐色のジャー中で、実施例11に記載されるように調製した88.9gのポリウレタンポリマー、0.8gのIrgacure 184(MEK中の10重量%)、0.4gのA-174(MEK中の10重量%)、4.0gのCN9178(MEK中の50重量%)、及び2.0gのXR-5580(供給時に50重量%)を一緒に混合した。混合物を密封し、ローラーミキサー上に一晩置いた。
8オンスの褐色のジャー中で、実施例11に記載されるように調製した88.9gのポリウレタンポリマー溶液、0.8gのIrgacure 184(MEK中の10重量%)、0.4gのA-174(MEK中の10重量%)、4.0gのCN9178(MEK中の50重量%)、及び3.2gのXR-5580(供給時に50重量%)を一緒に混合した。混合物を密封し、ローラーミキサー上に一晩置いた。
機械的撹拌機、凝縮器、及び窒素導入口を取り付けた樹脂製反応容器に、150gのPRIPLAST 1901(ヒドロキシル価55mg KOH/g)、6.0gのYmer 120、0.74gのBAGM、及び50.0gのMEKを添加した。溶液を撹拌しながら80℃まで加熱した後、0.12gのDBTDA及び28.78gのTMXDIを添加した。温度を80±2℃に維持して、所望のNCO含有量を有するポリウレタンプレポリマーを含有するアクリレートを得た。次いで、50.9gのPriplast 3180(58.9mg KOH/gのヒドロキシル価)及び1.0gの2-メチル-1,3-プロパンジオールをそれぞれ添加した。反応中、所望の量のMEKを系に添加して、粘度を希釈した。イソシアネート基が存在しなくなれば、反応が完了し、これを、2274cm-1付近でのNCOピークの消失について、FT-IRを使用してモニターした。最後に、固形分50重量%の透明な粘稠溶液を得た。GPCデータは上記のようにして決定した:すなわち、Mn=37829、Mw=127887、Mp=55072、及びPd=3.38であった
Claims (14)
- ポリイソシアネート成分とポリオール成分との反応生成物を含むポリウレタンポリマーを含む感圧接着剤組成物であって、
前記ポリオール成分が、10未満の親水性-親油性バランスを有するポリオール成分を含み、
前記ポリウレタンが、0.5重量%~10重量%の、ポリエチレングリコールポリマーに由来し、12を超えるHLBを有する親水性重合単位を含み、
前記ポリウレタンポリマーが、エチレン性不飽和基を更に含む、感圧接着剤組成物。 - 前記ポリオール成分、イソシアネート成分、又はこれらの組み合わせが、少なくとも1つの六員環構造を含む、請求項1に記載の感圧接着剤組成物。
- 前記ポリオール成分、イソシアネート成分、又はこれらの組み合わせが、少なくとも4、5、又は6個の炭素原子を有するアルキレン基を含む、請求項1又は2に記載の感圧接着剤組成物。
- 前記ポリイソシアネート成分が、25℃で液体であるポリイソシアネートを含む、請求項1~3のいずれか一項に記載の感圧接着剤。
- 前記ポリオール成分が、C36ベースのポリエステルポリオールを含む、請求項1~4のいずれか一項に記載の感圧接着剤。
- 前記エチレン性不飽和基の少なくとも一部が、ペンダントである、請求項1~5のいずれか一項に記載の感圧接着剤。
- 前記エチレン性不飽和基が、少なくとも2つのヒドロキシル基と、少なくとも2つのエチレン性不飽和基とを含むモノマーの反応生成物である、請求項1~6のいずれか一項に記載の感圧接着剤。
- 前記ポリウレタンポリマーが、一般式(HX)2R1A[式中、Aは、-CO2M、-OSO3M、-SO3M、-OPO(OM)2、-PO(OM)2(式中、MはH又はカチオンである)から選択される官能性酸基であり、XはO、S、NH、又はNR(式中、Rは1~4個の炭素原子を含むアルキレン基である)であり、R1は、3以上の価数を有する有機連結基であり、1~50個の炭素原子を含み、場合により、1個以上の3級窒素、エーテル酸素、又はエステル酸素原子を含み、イソシアネート反応性水素含有基を含まない]によって表される官能性酸含有化合物の反応生成物を更に含む、請求項1~7のいずれか一項に記載の感圧接着剤。
- 前記ポリウレタンが、0.001~37mmolのA/100gPUを含む、請求項8に記載の感圧接着剤。
- 前記ポリウレタンが、前記ポリウレタンのいずれかのエチレン性不飽和基の架橋前に、75,000g/モル~200,000g/モルの範囲の重量平均分子量を有する、請求項1~9いずれか一項に記載の感圧接着剤。
- マルチ-(メタ)アクリレート架橋剤、酸反応性化合物、又はこれらの組み合わせを更に含む、請求項1~10のいずれか一項に記載の感圧接着剤。
- 前記架橋剤が、ウレタン(メタ)アクリレートオリゴマーである、請求項11に記載の感圧接着剤。
- 前記架橋剤が、アルキレンオキシド繰り返し単位を含む、請求項11又は12に記載の感圧接着剤。
- 前記接着剤が、
65℃及び相対湿度90%にて72時間の放置時間後に、室温下、300mm/分の剥離速度において少なくとも15N/dm~200N/dmのガラスに対する180°剥離強度を有する、及び/又は
オレイン酸又は70%のイソプロピルアルコール水溶液中、70℃で72時間後に3~5の耐薬品性評価を有する、
請求項1~13のいずれか一項に記載の感圧接着剤組成物。
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