JP7030111B2 - 2成分無溶剤接着剤組成物およびそれらを作製する方法 - Google Patents
2成分無溶剤接着剤組成物およびそれらを作製する方法 Download PDFInfo
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Description
無溶剤接着剤組成物は、ホスフェート官能性化合物を含む少なくとも1つのポリオール成分と、ポリエステルポリオール、ポリエーテルポリオール、およびそれらの組み合わせからなる群から選択される少なくとも1つのポリオールとを含む。
イソシアネート成分は、少なくとも1つのイソシアネートモノマーと、ポリエステルポリオール、ポリエーテルポリオール、およびそれらの組み合わせからなる群から選択される少なくとも1つのポリオールと、を含む反応物(「プレポリマー反応物」)の反応生成物であるイソシアネートプレポリマーを含む。プレポリマー反応物の各々を以下に詳細に論述する。
実施例を調製するために使用した原材料は、以下の表1において商品名および供給業者が特定され、以下の表2において成分が特定される。
ラミネート性能試験
次いで、発明接着剤および比較接着剤を使用して、ポリエチレンフィルムおよびアルミニウムフィルムを含むラミネートを形成する。その接着剤を2.0gsmのコーティング重量でポリエチレンに塗布し、アルミニウムフィルムと一緒にし、次いで50℃で24時間硬化させてラミネートを形成する。ラミネートが形成されたら、接着強度、ヒートシール強度、およびモルトンスープ(ジンロンフィッシュビーンオイル、ハインツケチャップ、およびヘンシュン黒酢の1:1:1の混合物)を用いたボイルインバッグ耐性を分析するために試験を行う。
Instron 5940 Series Single Column Table Top Systemを使用して、250mm/分のクロスヘッド速度下でのT-剥離試験のためにラミネートを15mm幅のストリップに切断する。試験中、各ストリップの尾部を手でわずかに引っ張って、尾部が剥離方向に対して90°の角度を保つようにする。3つのストリップを各サンプルについて試験し、平均値を計算する。結果はN/15mm単位である。比較的高い値は、より良好な結合強度を示す。
ラミネートを、Brugger Feinmechanik GmbHから入手可能なHSG-C Heat-Sealing Machineにおいて140℃の封止温度および300Nの圧力下で1秒間ヒートシールする。次いで、ラミネートを冷却し、Instron Corporationから入手可能な5940 Series Single Column Table Top Systemを使用して250mm/分のクロスヘッド速度下でのヒートシール強度試験のために15mm幅のストリップに切断する。3つのストリップを各サンプルについて試験し、平均値を計算する。結果はN/15mm単位である。比較的高い値は、より良好なヒートシール強度を示している。
ラミネートを8cm×12cmのピースに切断し、それをヒートシールよってバッグにし、そのバッグの内側にモルトンスープを入れる。次いで、バッグを沸騰水に入れ、30分間放置して、バッグが沸騰プロセス全体を通して水に常に浸漬されるようにする。バッグのトンネリング、デラミネーション、および/または漏れの程度を沸騰プロセスの完了時に記録する。サンプルがボイルインバッグ耐性試験に合格するには、トンネリング、デラミネーション、または漏れの証拠がないことを示さなくてはならない。次いで、バッグを開け、空にし、すぐに幅15mmのストリップに切断してINSTRON(商標)5943装置でT型剥離接着強度について試験する。3つのストリップを試験して平均値を取得する。
1.発明の接着剤1~6(IAs1~6)
イソシアネート成分A1~A5(IC.A1~IC.A5)を、イソシアネート成分の総重量に基づく重量パーセントで表3に列挙された原材料を使用して、下記の手順に従って合成する。
表6に示すように、全ての本発明の接着剤は室温で良好な接着強度およびヒートシール強度を示し、ボイルインバック試験後に初期接着強度の少なくとも50%を維持した。しかしながら、比較接着剤1は、ボイルインバッグ(Bib)試験において接着強度が低下した。
また、本明細書には以下の態様の発明も開示する。
[1]
ホスフェート官能性化合物と、ポリエステル、ポリエーテル、およびそれらの組み合わせから選択される少なくとも1つのポリオールと、を含むポリオール成分、および
少なくとも1つのイソシアネートモノマーと、ポリエステル、ポリエーテル、およびそれらの組み合わせから選択される少なくとも1つのポリオールと、の反応生成物であるイソシアネートプレポリマーを含むイソシアネート成分、を含む、2成分無溶剤接着剤組成物。
[2]
前記ホスフェート官能性化合物が、構造I
[3]
前記ホスフェート官能性化合物が、2つ以上のヒドロキシル基と、1つ以上の構造Iと、を含むホスフェート官能性ポリオールである、上記[2]に記載の組成物。
[4]
前記ホスフェート官能性ポリオールが、ポリオールとポリリン酸との反応生成物である、上記[3]に記載の組成物。
[5]
前記ホスフェート官能性ポリオールが、少なくとも90の分子量を有し、4000g/molを超えない、上記[3]に記載の組成物。
[6]
前記ポリオール成分中の前記ホスフェート官能性化合物の量が、前記ポリオール成分の重量に基づく重量で、少なくとも0.2重量%であって、10重量%を超えない、上記[1]に記載の組成物。
[7]
前記イソシアネートモノマーが、芳香族イソシアネート、脂肪族イソシアネート、カルボジイミド変性イソシアネート、およびそれらの組み合わせから選択される、上記[1]に記載の組成物。
[8]
前記イソシアネート成分および前記ポリオール成分のうちの少なくとも1つが、バイオ系ポリオールをさらに含む、上記[1]に記載の組成物。
[9]
前記バイオ系ポリオールが、ヒマシ油である、上記[8]に記載の組成物。
[10]
前記イソシアネート成分対前記ポリオール成分の重量比が、1:1~5:1である、上記[1]に記載の組成物。
[11]
上記[1]に記載のポリオール成分とイソシアネート成分との硬化反応生成物である接着剤組成物。
[12]
上記[11]に記載の接着剤組成物の層を含むラミネートフィルム。
Claims (12)
- 前記ホスフェート官能性ポリオールが、4000g/molを超えない、請求項1に記載の組成物。
- 前記ポリオール成分中の前記ホスフェート官能性ポリオールの量が、前記ポリオール成分の重量に基づく重量で、少なくとも0.2重量%であって、10重量%を超えない、請求項1又は2に記載の組成物。
- 前記ポリオール成分中の前記ポリエステルポリオールの量が、前記ポリオール成分の重量に基づく重量で、少なくとも5重量%であって、80重量%を超えない、請求項1~3のいずれか一項に記載の組成物。
- 前記ポリオール成分中の前記ポリエーテルポリオールの量が、前記ポリオール成分の重量に基づく重量で、少なくとも10重量%であって、80重量%を超えない、請求項1~4のいずれか一項に記載の組成物。
- 前記ポリオール成分中の前記ホスフェート官能性ポリオールの量が、前記ポリオール成分の重量に基づく重量で、少なくとも2.0重量%であって、10重量%を超えず、
前記ポリオール成分中の前記ポリエステルポリオールの量が、前記ポリオール成分の重量に基づく重量で、少なくとも5重量%であって、80重量%を超えず、
前記ポリオール成分中の前記ポリエーテルポリオールの量が、前記ポリオール成分の重量に基づく重量で、少なくとも10重量%であって、80重量%を超えない、
請求項1~5のいずれか一項に記載の組成物。 - 前記イソシアネートモノマーが、芳香族イソシアネート、脂肪族イソシアネート、カルボジイミド変性イソシアネート、およびそれらの組み合わせから選択される、請求項1~6のいずれか一項に記載の組成物。
- 前記イソシアネート成分および前記ポリオール成分のうちの少なくとも1つが、バイオ系ポリオールをさらに含む、請求項1~7のいずれか一項に記載の組成物。
- 前記バイオ系ポリオールが、ヒマシ油である、請求項8に記載の組成物。
- 前記イソシアネート成分対前記ポリオール成分の重量比が、1:1~5:1である、請求項1~9のいずれか一項に記載の組成物。
- 請求項1~10のいずれか一項に記載の組成物に含まれるポリオール成分とイソシアネート成分との硬化反応生成物である接着剤組成物。
- 請求項11に記載の接着剤組成物の層を含むラミネートフィルム。
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US20240240068A1 (en) * | 2018-11-22 | 2024-07-18 | Dow Global Technologies Llc | Adhesive composition |
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