RICINOLEIC ACID COPOLYMER COMPOSITION AND CROSSLINKED BODY THEREOF

To provide a ricinoleic acid polymer composition excellent in mechanical strength after crosslinking when formed into a rubber molded product.SOLUTION: The ricinoleic acid copolymer composition includes 100 pts.mass of (A) a copolymer of [α] ricinoleic acid and/or a derivative thereof, [β] a dicarbo...

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Bibliographische Detailangaben
Hauptverfasser: ARINO TAKAMASA, MITSUNAGA SHINTARO, KIDA MARIKO, TAKEHARA AKINOBU, SHISHIDO KEISUKE
Format: Patent
Sprache:eng ; jpn
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Zusammenfassung:To provide a ricinoleic acid polymer composition excellent in mechanical strength after crosslinking when formed into a rubber molded product.SOLUTION: The ricinoleic acid copolymer composition includes 100 pts.mass of (A) a copolymer of [α] ricinoleic acid and/or a derivative thereof, [β] a dicarboxylic acid and [γ] a diol, 10 to 300 pts.mass of (B) a reinforcement material and 0.01 to 10 pts.mass of (C) a crosslinking agent, in which the copolymer (A) satisfies at least requirements as given below; the requirement that the content of a structural unit derived from ricinoleic acid and/or a derivative thereof [α] is 10 mol% to less than 100 mol% based on the total of the structural unit derived from the ricinoleic acid and/or the derivative thereof [α], a structural unit derived from the dicarboxylic acid [β] and a structural unit derived from the diol [γ]; the requirement that the weight average molecular weight Mw is 10,000 to 500,000; and the requirement that the ratio (Mw/Mn) of the weight average molecular weight Mw to the number average molecular weight Mn is 2 to 6.SELECTED DRAWING: None 【課題】本発明は、ゴム成形体としたときの架橋後の機械強度に優れるリシノール酸重合体組成物を提供することを目的とする。【解決手段】本発明のリシノール酸共重合体組成物は、リシノール酸および/またはその誘導体[α]と、ジカルボン酸[β]と、ジオール[γ]との共重合体(A)100質量部と、補強材(B)10〜300質量部と、架橋剤(C)0.01〜10質量部とを含み、且つ、当該共重合体(A)が、少なくとも、リシノール酸および/またはその誘導体[α]由来の構造単位の含有量が、前記のリシノール酸および/またはその誘導体[α]由来の構造単位と、ジカルボン酸[β]由来の構造単位と、ジオール[γ]由来の構造単位との合計に対し、10モル%以上100モル%未満の要件と、重量平均分子量Mwが10,000以上500,000以下の要件と、重量平均分子量Mwと数平均分子量Mnの比(Mw/Mn)が2以上、6以下の要件を満たす。【選択図】なし