Polyester resins are unsaturated, cross-linked polymers which are made thermosetting by use of a peroxide-type catalyst.
聚酯树脂是交联的不饱和聚合物，用过氧化物类催化剂可制成热固性树脂。
2
Polyester polyol ACTS as an organic catalyst in this reaction as well as in some other chemical reactions.
催化剂聚酯作为一个有机催化这种反应，以及在其他一些化学反应。
3
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.