JP5543560B2 - 感圧接着剤ヒドロゲルを製造する方法 - Google Patents
感圧接着剤ヒドロゲルを製造する方法 Download PDFInfo
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- JP5543560B2 JP5543560B2 JP2012204720A JP2012204720A JP5543560B2 JP 5543560 B2 JP5543560 B2 JP 5543560B2 JP 2012204720 A JP2012204720 A JP 2012204720A JP 2012204720 A JP2012204720 A JP 2012204720A JP 5543560 B2 JP5543560 B2 JP 5543560B2
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- Prior art keywords
- pressure sensitive
- sensitive adhesive
- hydrogel
- precursor
- ethylenically unsaturated
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
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Description
(A)エチレン系不飽和で末端封止されたポリエーテル部分を含むオリゴマー前駆体であって、メタクリル酸が付随(associate)されているオリゴマー前駆体を提供する工程と、
(B)二官能性エチレン系不飽和モノマー、三官能性エチレン系不飽和モノマーおよびそれらの組み合わせからなる群から選択されたエチレン系不飽和架橋剤を提供する工程と、
(C)約3.5〜約9の間のpHで水の中で前記オリゴマー前駆体と前記エチレン系不飽和架橋剤をラジカル硬化させて、前記感圧接着剤ヒドロゲルを提供する工程と、
を含む方法を提供する。
MO(CH2CH2O)mH (I)
式中、
Mは水素またはC1〜C6アルキルであり、
mは約1〜約25の範囲の整数である。
ガスクロマトグラフ分析
内部標準ガスクロマトグラフ試験方法によって残留メタクリル酸および無水メタクリル酸の分析を実行する。0.01%(W/W)のメタクリル酸および0.001%(W/W)の無水メタクリル酸を含有する混合標準を2−エチルヘキシルアクリレートの0.001%(W/W)内部標準でスパイクされた安定化テトラヒドロフラン(THF)の中で調製した。サンプルを溶解させ、0.001%(W/W)の2−エチルヘキシルアクリレート内部標準でスパイクされた安定化THF中で10%(W/W)に希釈した。Rtx−1701、30m、ID0.32mm、0.5μmのdfキャピラリーGCカラム(14%シアノ−プロピル−フェニル−86%ジメチルポリシロキサン)を用いて分離を実行した。ヘリウムをキャリアガスとして用いた。15分にわたる3.6mL/分、その後、9.6mL/分の最終フローへの2分にわたる3mL/分での傾斜および1分にわたる保持のカラムフロープログラムを用いた。0分にわたる50℃、その後、200℃への10℃/分での傾斜、0分にわたる保持、その後、270℃への30℃/分での傾斜および0.67分にわたる保持の炉温度プログラムを用いる。パージバルブを最初に閉じ、その後、1分で開けて、分流のない注入モードでガスクロマトグラフを運転した。注入口を170℃で運転し、水素炎イオン化検出器(FID)を290℃で維持した。標準およびサンプルのための3μLの注入体積を用いた。
硬化の直後に接着剤組成物の初期粘着性を評価した。この試験において、親指でサンプルに確かな圧力を加え、親指を取り去った。粘着性を定性的に評価し、表1により1〜6の値を割り振った。この尺度で、2、3および4の粘着性値は、粘着性を有するのに十分な伸展性と凝集強度を有するのに十分な一体性の望ましいバランスを有する接着剤を表した。しかし、受けいれられない値は1、5および6である。これらの値は、(1)本質的に粘着性のない組成物、(5)凝集強度を欠き、接着剤転写を示す組成物および(6)硬化サイクル後に液状を保持する未硬化組成物を表している。
一般に、公称分子量12000のポリエチレングリコールをメタクリレートで末端封止して、米国特許出願公開第20030203011号明細書に記載された手順を用いてオリゴマー前駆体としてポリエチレングリコールジメタクリレート(「DMPEG」)を提供した。詳しくは、500グラムのポリグリコール12000S(0.0365モル、ドイツ国ゲンドルフのクラリアント(Clariant GmbH(Gendolf,Germany))から購入したもの)を100℃で乾燥窒素の雰囲気下で溶融させた。0.23グラムの2,6−ジ−t−ブチル−4−メチルフェノール(ウィスコンシン州ミルウォーキーのアルドリッチ・ケミカルズ(Aldrich Chemicals(Milwaukee,WI))から購入した「BHT」)および14.08グラムの無水メタクリル酸(0.091モル、ウィスコンシン州ミルウォーキーのアルドリッチ・ケミカルズ(Aldrich Chemicals(Milwaukee,WI))から購入したもの)を溶融させた材料に添加した。得られた混合物を100℃で乾燥空気の雰囲気下で6時間にわたり保持し、その後、65℃に冷却した。その後、得られた材料を真空でストリッピングして、内部コンデンサを有する0.04m2のガラス転圧式フィルム蒸発器を用いて過剰の無水メタクリル酸および副生物メタクリル酸の大部分を除去した。ジャケットを100℃に、コンデンサを15℃に、ロータを175rpmに、および真空を約6マイクロメートルHgに設定した。
比較例Aを酢酸で3.5のpHに調節し、実施例1Bを水酸化ナトリウムで7.5にpH調節したことを除き(酢酸および水酸化ナトリウムは両方ともウィスコンシン州ミルウォーキーのアルドリッチ・ケミカルズ(Aldrich Chemicals(Milwaukee,WI))から購入した)、実施例1Aのように2つの追加の反応性溶液を製造した。比較例Aおよび実施例1Bも「フュージョン(Fusion)」300システムUVランプ下で溜めの中でUV硬化させた。粘着性値および残留メタクリル酸レベルを表2に示している。
反応性溶液を実施例1Aのように配合した。比較例B−Eを反応性溶液から製造し、メタクリル酸濃度を原液メタクリル酸(ウィスコンシン州ミルウォーキーのアルドリッチ・ケミカルズ(Aldrich Chemicals(Milwaukee,WI))から購入したもの)の添加によって調節し、酸濃度をそれぞれ225、350、600および850ppmであるようにした。pH値を原液メタクリル酸の添加後に測定し、配合物を実施例1Aのような硬化のための条件に供した。比較例B−Eが硬化しなかったことに気付くとともに粘着性値を割り振った後、比較例B−Eの未反応溶液を水酸化ナトリウムで中性pHにpH調節し、再び硬化条件に供した。得られたヒドロゲル材料を実施例2A−2Dと指定した。実施例2A−2Dおよび比較例B−Eに関する粘着性値を表3に示している。
反応性溶液を実施例1Aに略述した手順と同様に配合した。実施例3A−3Dを前駆体から製造し、酸濃度を原液アクリル酸(ウィスコンシン州ミルウォーキーのアルドリッチ・ケミカルズ(Aldrich Chemicals(Milwaukee,WI))から購入したもの)の添加によって調節した。メタクリル酸のレベルを95ppmで維持しつつアクリル酸濃度を実施例3A−3Dにおいてそれぞれ125、250、500および750ppmに調節した。pH値を添加後に測定し、配合物を実施例1Aのように硬化させた。実施例3E-3Hの反応性溶液を後で水酸化ナトリウムにより中性pHにpH調節し硬化させたことを除き、4つの追加の反応性溶液実施例3E-3Hを同じ方式で調製した。実施例3A-3Hに関する粘着性値は表4に示している。
反応性溶液を実施例1Aに略述した手順と同様に配合した。比較例FおよびGを前駆体から製造し、酸濃度を原液アクリル酸(ウィスコンシン州ミルウォーキーのアルドリッチ・ケミカルズ(Aldrich Chemicals(Milwaukee,WI))から購入したもの)の添加によって調節した。メタクリル酸のレベルを比較例FとGの両方で300ppmに調節しつつアクリル酸濃度を比較例Fにおいて750ppmに、および比較例Gにおいて2500ppmに調節した。pH値を添加後に測定し、配合物を実施例1Aのように硬化させた。2つの追加の反応性溶液実施例3Iおよび3Jを同じ方式で調製し、実施例3Iは750ppmのアクリル酸含有率を有し、実施例Jは2500ppmのアクリル酸含有率を有していた。メタクリル酸のレベルを実施例3Iと3Jの両方で300ppmに調節した。3Iおよび3Jの反応性溶液を水酸化ナトリウムで中性pHにpH調節し、硬化させた。比較例FおよびGならびに実施例3Iおよび3Jに関する粘着性値を表5に記載している。
実施例4を以下の方式で調製した。一般に、16000の公称分子量のエチレングリコールとプロピレングリコール(75/25)の水溶性ランダムコポリマーをダウ・ケミカル・カンパニー(Dow Chemical Company)から購入し、米国特許出願公開第2003/0203011号明細書に記載されたように無水メタクリル酸で封止した。詳しくは、480グラムの「ウコン(UCON)」−75H−90000(0.030モル、ミシガン州ミッドランドのダウ・ケミカル・カンパニー(Dow Chemical Co.(Midland,MI))から購入したもの)、0.25グラムの2,6−ジ−t−ブチル−4−メチルフェノール(ウィスコンシン州ミルウォーキーのアルドリッチ・ケミカルズ(Aldrich Chemicals(Milwaukee,WI))から購入したBHT)、16.3グラム(0.106モル)の無水メタクリル酸(ウィスコンシン州ミルウォーキーのアルドリッチ・ケミカルズ(Aldrich Chemicals(Milwaukee,WI))から購入したもの)および2グラム(0.023モル)のメタクリル酸(ウィスコンシン州ミルウォーキーのアルドリッチ・ケミカルズ(Aldrich Chemicals(Milwaukee,WI))から購入したもの)を組み合わせ、90/10窒素/酸素の雰囲気下で合計で48時間にわたり加熱した。この時間の間に、12時間ごとに追加0.12グラムのBHTを添加した。反応の終わりに、約5mmHgの真空を反応容器で引き、空気を1時間にわたり混合物にパージして、未反応無水メタクリル酸の大部分を追い出した。最後に、1グラムの水を添加し、混合物を65℃で3時間にわたり攪拌した。
一般に、ポリエーテルジアクリルアミドを含有するオリゴマー前駆体溶液をカントナー(Kantner)らに譲渡された米国特許第5,489,624号明細書に略述された手順により合成した。詳しくは、一定量のMW2,000のポリ(エチレンオキシド)ジアミン(「ジェファーミン(Jeffamine)」ED−2001というブランドでテキサス州ヒューストンのテキサコ・ケミカル・カンパニー(Texaco Chemical Company(Houston,TX))から入手できる)を55℃の炉内で4時間にわたり保持することにより溶融させた。200グラムの量のポリ(エチレンオキシド)ジアミンを74.4グラムの脱イオン水と74.4グラムのMW300のポリエチレングリコール(PEG300)の混合物に溶解させ、放置して室温に冷却した。得られた溶液を1リットルのガラス容器に投入し、上部機械的攪拌パドルを溶液に浸漬させつつ室温で水浴に入れた。16.68グラムの量のイソホロンジイソシアネート(IPDI)(ウィスコンシン州ミルウォーキーのアルドリッチ・ケミカル・カンパニー(Aldrich Chemical Company(Milwaukee,WI))から入手できる)を数分の過程にわたって分割して添加して、45℃より低い温度に維持した。満足に攪拌するには溶液が粘性過ぎるようになるまで、攪拌を10分にわたり続けた。混合パドルを取り除き、6.96グラムの2−ビニル−4,4−ジメチル−2−オキサゾリン−5−オン(VDM)(ニュージャージー州プリンストンのS.N.P.E(Princeton,NJ))から入手できる)を溶液に添加し混合して、均質混合物を得た。その後、それに蓋を付け、室温で一晩暗所に放置した。
Claims (2)
- (A)エチレン系不飽和基で末端封止されたポリエーテル部分を含むオリゴマー前駆体とメタクリル酸を提供する工程と、
(B)二官能性エチレン系不飽和モノマー、三官能性エチレン系不飽和モノマーおよびそれらの組み合わせからなる群から選択されたエチレン系不飽和架橋剤を提供する工程と、
(C)水中で前記メタクリル酸の存在下にpHを5以上9以下の範囲内で制御して前記オリゴマー前駆体と前記エチレン系不飽和架橋剤をラジカル硬化させて、感圧接着剤ヒドロゲルを提供する工程と、
を含む、感圧接着剤ヒドロゲルを製造する方法。 - 前記pHを6以上8以下の範囲内で制御する、請求項1に記載の方法。
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EP2251366A1 (en) | 2010-11-17 |
EP1819797B1 (en) | 2010-11-24 |
ATE489442T1 (de) | 2010-12-15 |
BRPI0518756B8 (pt) | 2018-05-02 |
JP2013018989A (ja) | 2013-01-31 |
KR101134219B1 (ko) | 2012-04-09 |
BRPI0518756B1 (pt) | 2017-12-26 |
KR20070086797A (ko) | 2007-08-27 |
WO2006062573A1 (en) | 2006-06-15 |
CA2588700A1 (en) | 2006-06-15 |
CA2588700C (en) | 2014-04-01 |
CN101087860B (zh) | 2010-12-01 |
BRPI0518756A2 (pt) | 2008-12-02 |
JP2008522001A (ja) | 2008-06-26 |
DE602005025011D1 (de) | 2011-01-05 |
BRPI0518756C8 (pt) | 2018-12-26 |
AU2005314594A1 (en) | 2006-06-15 |
US7999023B2 (en) | 2011-08-16 |
TW200628578A (en) | 2006-08-16 |
EP1819797A1 (en) | 2007-08-22 |
ATE541873T1 (de) | 2012-02-15 |
US20060122298A1 (en) | 2006-06-08 |
MX2007006417A (es) | 2007-07-20 |
CN101087860A (zh) | 2007-12-12 |
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