JP4752184B2 - 樹脂組成物およびそれを用いた接着剤 - Google Patents
樹脂組成物およびそれを用いた接着剤 Download PDFInfo
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- JP4752184B2 JP4752184B2 JP2004066641A JP2004066641A JP4752184B2 JP 4752184 B2 JP4752184 B2 JP 4752184B2 JP 2004066641 A JP2004066641 A JP 2004066641A JP 2004066641 A JP2004066641 A JP 2004066641A JP 4752184 B2 JP4752184 B2 JP 4752184B2
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- polyester
- adhesive
- acid
- crystalline polyester
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Description
上記のように、機械的特性が良好な結晶性ポリエステル(A)と、ある特定組成の濡れ性の良好なポリエステル(B)を組み合わせることで、良好な接着性を示すとともに、低温でのラミネート性が良好な樹脂組成物および接着剤組成物となる。このような特性は一方の樹脂だけでは得られず、上記の特性の大きく異なる2種の樹脂ブレンドによる効果である。
また、ペレットを前述のスクリュー式押出し機により溶融し、直接積層する被着材間に挿入して熱接着する方法や、一方の被着材が熱可塑性プラスチックの場合、共押出しにより直接接着するか、直接一方の被着材に塗布し、改めて加熱接着する方法がある。
撹拌機、温度計、溜出用冷却管を装備した反応缶内に、テレフタル酸116部、アジピン酸44部、エチレングリコール87部、1,4−ブタンジオール54部、テトラブチルチタネート0.10部を仕込み、180〜240℃で1時間エステル化反応を実施した。次いで、反応系を240℃から250℃に昇温する一方、系内を徐々に減圧していき、60分かけて500Paとした。そして、さらに130Pa以下で65分間重縮合反応を行い、結晶性ポリエステル(A−1)を得た。結晶性ポリエステル(A−1)はNMR分析の結果、テレフタル酸70モル%、アジピン酸30モル%、エチレングリコール50モル%、1,4−ブタンジオール50モル%の組成を有しており、200℃・せん断速度50sec-1における溶融粘度が2500dPa・s、ガラス転移温度0℃、融点115℃、軟化点が130℃、酸価25eq/106gであった。
結晶性ポリエステル樹脂(A)の合成例1と同様の手法により、組成を変更させた結晶性ポリエステル(A−2)、(A−3)の作製を行った。
結晶性ポリエステル樹脂(A)の合成例1と同様の手法により、ポリエステル(B−1)〜(B−4)の作製を行った。
(A−1)〜(A−3)、(B−1)〜(B−4)の組成および諸特性の結果を表1に併せて示す。
結晶性ポリエステル(A−1)65部、ポリエステル(B−1)20部、エチレン−α−オレフィン(三井化学社製タフマーP0680)10部、エポキシ樹脂YDCN703(東都化成社製、ノボラック型エポキシ樹脂)5部を200℃にて二軸スクリュー式押出し機にて混練した。得られた接着剤を50μmの二軸延伸PET(ポリエチレンテレフタレート)フィルムの上に、スクリュー径40mmφの押し出し機を用いて、170℃の温度でTダイを通して接着剤厚が30μmとなるように押し出し、接着テープを得た。この接着テープを用いて、下記の評価を行った。
以下同様にして実施例2〜3、比較例1〜6を作製し評価を行った。結果を表2に示した。
Claims (11)
- (B1)酸成分として脂肪族多価カルボン酸または脂環族多価カルボン酸が40モル%以上含む、(B2)ジオール成分として数平均分子量が400〜10000のポリエーテルグリコールを1モル%以上含む、の少なくともいずれか一方を満たすポリエステル(B)、
ポリエステル(B)ではない結晶性ポリエステル(A)、
エチレン−α−オレフィン共重合体であるポリオレフィン(C)、
エポキシ化合物(D)、
を含んでなり、重量比で(A)/(B)=20/80〜99/1、(A)+(B)を100重量部とした場合に(C)は0.5〜80重量部、(A)+(B)を100重量部とした場合に(D)は100/17〜80重量部であることを特徴とする接着剤用樹脂組成物。 - ポリオレフィン(C)のショアD硬度が10以上48未満である請求項1に記載の樹脂組成物。
- 結晶性ポリエステル(A)の酸成分として芳香族多価カルボン酸が60モル%以上であり、かつジオール成分としてエチレングリコール、1,3−プロパンジオール、1,4−ブタンジオールおよび1,6−ヘキサンジオールからなる群のうち少なくとも二つの成分を含有し、その合計量が50モル%以上であることを特徴とする請求項1または2に記載の樹脂組成物。
- 結晶性ポリエステル(A)のジオール成分として数平均分子量が400〜10000のポリエーテルグリコールを含有することを特徴とする請求項1〜3のいずれかに記載の樹脂組成物。
- ポリエステル(B)の環球法による軟化点が結晶性ポリエステル(A)の軟化点より低いことを特徴とする請求項1〜4のいずれかに記載の樹脂組成物。
- ポリエステル(B)の200℃、せん断速度50sec-1における溶融粘度が、結晶性ポリエステル(A)の200℃、せん断速度50sec-1における溶融粘度より低いことを特徴とする請求項1〜5のいずれかに記載の樹脂組成物。
- ポリオレフィン(C)の密度が0.91g/cm3以下であることを特徴とする請求項1〜6のいずれかに記載の樹脂組成物。
- 請求項1〜7のいずれかに記載の樹脂組成物を含有する接着剤。
- 請求項8に記載の接着剤を用いた積層体。
- 請求項8に記載の接着剤を用いたフレキシブルフラットケーブル。
- 請求項8に記載の接着剤を用いたフレキシブルプリント配線基板。
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CN107974050A (zh) | 2016-10-21 | 2018-05-01 | 中国石油化工股份有限公司 | 一种聚酯组合物及其制备方法 |
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