A high-activity catalyst system for polyester consisted of Sb 2(EG) 3 and at least one kind of metal acetate catalyst of manganese, zinc, cobalt or lead.
选择乙二醇锑以及至少一种锰、锌、钴、铅等金属醋酸盐共同组成高效聚酯催化剂体系，研究其对缩聚反应的催化作用。
SB-2, being developed for use in Shengli, is composed of a fatty acids modified and polyfunctionalities containing anionic surfactant in Na salt form.
SB 2是胜利油田开发的稠油乳化降粘剂，为脂肪酸改性的具有多官能团的钠盐型阴离子表面活性剂。
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