The present invention provides a resin composition for molding, added with a nucleating agent suitable for promoting crystallization of polyester capable having a crystal structure, and in particular of biodegradable polyester, and also provides a molded product containing the resin composition for molding thus improved in the crystallinity.
A resin composition characterized by comprising either a cyclic compound expressed by general formula (I) below:
[where each of A1, A2, A4 and A5 commonly or independently expresses -CO- or -NH-, each of A3 and A6 commonly or independently expresses hydrogen, halogen, optionally-substituted aliphatic group or optionally-substituted aromatic group] and having both of -CO- and -NH- in the molecule, or a mixture of (i) a cyclic compound having -CO- but no NH in the molecule and (ii) a cyclic compound having no -CO- but NH in the molecule, together with polyester capable of having a crystal structure.
本发明提供了一种成型用
树脂组合物,该组合物中添加了一种成核剂,该成核剂适用于促进具有晶体结构的聚酯,特别是可
生物降解聚酯的结晶,本发明还提供了一种含有该成型用
树脂组合物的成型产品,该成型产品的结晶度因此得到改善。
一种
树脂组合物,其特征在于包含如下通式 (I) 所表示的环状化合物:
[其中 A1、A2、A4 和 A5 中的每一个通常或独立地表示-CO-或-NH-,A3 和 A6 中的每一个通常或独立地表示氢、卤素、任选取代的脂肪族基团或任选取代的芳香族基团],且分子中同时具有-CO-和-NH-,或(i)分子中具有-CO-但不具有 NH-的环状化合物和(ii)分子中不具有-CO-但具有 NH-的环状化合物的混合物,以及具有晶体结构的聚酯。