JP2021042389A - 低温用途のポリブタジエン重合体及びポリブタジエン重合体を組み込んだゴム組成物 - Google Patents
低温用途のポリブタジエン重合体及びポリブタジエン重合体を組み込んだゴム組成物 Download PDFInfo
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Abstract
【解決方法】この組成物に組み込まれる1,4−ポリブタジエンは、少なくとも85〜約92%のシス含有量と、約1%〜約5%のビニル含有量と、約3〜約12%のトランス含有量と、を含み、この1,4−ポリブタジエンは、示差走査熱量測定(DSC)によって測定したときに、約5〜約25J/g℃の溶融エンタルピーΔHmを有する。
【選択図】図1
Description
本出願は、2015年12月7日出願の米国特許仮出願第62/263,821号に対する優先権を主張するものであり、全体として参照により本明細書に組み込まれる。
Claims (15)
- 重合体であって、
少なくとも85〜約92%のシス含有量、約1%〜約5%のビニル含有量、約3〜約12%のトランス含有量を有する、1,4−ポリブタジエンを含み、
前記重合体が、示差走査熱量測定(DSC)によって測定したときに、約5〜約25J/g℃の溶融エンタルピーΔHmを有する、重合体。 - 前記シス含有量が約85%〜約90%であり、前記ビニル含有量が約1〜約3%であり、前記トランス含有量が約5〜約10%である、請求項1に記載の重合体。
- 前記1,4−ポリブタジエンが約−20℃〜−約40℃の融解温度(Tm)を有する、請求項1又は2に記載の重合体。
- 前記1,4−ポリブタジエンが約250,000g/mol〜約350,000g/molのピーク分子量を有する、請求項1〜3のいずれか1項に記載の重合体。
- 示差走査熱量測定(DSC)によって測定したときに、前記溶融エンタルピーΔHmが約10〜約20J/g℃である、請求項1〜4のいずれか1項に記載の重合体。
- ゴム組成物であって、
請求項1〜5のいずれか1項に記載の重合体と、
補強充填剤と、
硬化剤と、を含む、ゴム組成物。 - 前記ゴム組成物が、−30℃において、約10,000,000〜約20,000,000Paの複素弾性率G*を有する、請求項6に記載のゴム組成物。
- 前記補強充填剤がカーボンブラックを含み、前記硬化剤が硫黄を含む、請求項6又は7に記載のゴム組成物。
- 天然ゴム、追加の合成ゴム、又はこれらの組み合わせを更に含む、請求項6〜8のいずれか1項に記載のゴム組成物。
- 前記追加の合成ゴムが、ポリブタジエン、ポリイソプレン、ポリイソブチレン−co−イソプレン、ネオプレン、ポリ(エチレン−co−プロピレン)、ポリ(スチレン−co−ブタジエン)、ポリ(スチレン−co−イソプレン)、及びポリ(スチレン−co−イソプレン−co−ブタジエン)、ポリ(イソプレン−co−ブタジエン)、ポリ(エチレン−co−プロピレン−co−ジエン)、ポリスルフィドゴム、アクリルゴム、ウレタンゴム、シリコーンゴム、エピクロロヒドリンゴム、又はこれらの混合物を含む、請求項9に記載のゴム組成物。
- 方法であって、
1,3−ブタジエンを含む溶液を重合して、少なくとも85〜約92%のシス含有量と、約1%〜約5%のビニル含有量と、約3〜約12%のトランス含有量と、を有する1,4−ポリブタジエンを産生することを含み、前記重合が、ランタニド金属錯体を含む触媒によって触媒され、
前記1,4−ポリブタジエンが、示差走査熱量測定(DSC)によって測定したときに、約5〜約25J/g℃の溶融エンタルピーΔHmを有する、方法。 - 前記ランタニド金属錯体が、ランタン、ネオジウム、セリウム、プラセオジム、プロメチウム、サマリウム、ユーロピウム、ガドリニウム、テルビウム、ジスプロシウム、ホルミウム、エルビウム、ツリウム、イッテルビウム、ルテチウム、及びジジミウムのうちの1つ以上を含む、請求項11に記載の方法。
- 前記ランタニド金属錯体がガドリニウムを含む、請求項11又は12に記載の方法。
- 前記触媒が、非配位性化合物及びアルキル化剤を更に含む、請求項11〜13のいずれか1項に記載の方法。
- 前記シス含有量が約85%〜約90%であり、前記ビニル含有量が約1〜約3%であり、前記トランス含有量が約5%〜約10%である、請求項11〜14のいずれか1項に記載の方法。
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FR3104585B1 (fr) * | 2019-12-17 | 2021-12-03 | Michelin & Cie | Système catalytique à base d’un métallocène et d’un diorganomagnésien |
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