The Catalytic Activity of Naphthenate yttrium——triisobutyl aluminium——aluminium sesquichlo—ride—catalyst System in the Stereospecific polymerization of Butadiene
环烷酸—三异丁铝—“倍半”体系在丁二烯定向聚合中的催化活性
The Catalytic Activity of Naphthenate yttrium——triisobutyl aluminium——aluminium sesquichlo—ride—catalyst System in the Stereospecific polymerization of Butadiene
环烷酸—三异丁铝—“倍半”体系在丁二烯定向聚合中的催化活性
"黑稀金矿:一种光亮的棕黑色稀土矿石,主要由铈、铒、钛、铀和构成."
"euxenite:a lustrous, blackish-brown rare-earth mineral consisting primarily of cerium , erbium, titanium, uranium, and yttrium."
The study on technical process and kinetics of PVC heat steadilizer yttrium stearate by saponifying method was carried out.
采用皂化法制备了PVC热稳定剂-硬脂酸,行了动力学研究。
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