Cyclic diol compound, method for producing said compound, and use of said compound

Provided is a modifier for resins such as polyester resins, polyester carbonate resins, and polycarbonate resins. Also provided are: a cyclic diol compound useful as a resin modifier; and a method for producing the cyclic diol compound. The present invention relates to a resin modifier and the like comprising a compound represented by general formula (1). # imgabs0 # [In the formula, R1 may be the same or different and each represents a hydrogen atom, a fluorine atom, a chlorine atom, a bromine atom, a phenyl group, or a linear or branched alkyl group having 1-4 carbon atoms; ring A represents a benzene ring which may be substituted by 1-4 groups selected from the group consisting of a fluorine atom, a chlorine atom, a bromine atom, a phenyl group, a linear or branched alkoxy group having 1-6 carbon atoms, and a linear or branched alkyl group having 1-6 carbon atoms. 本发明提供聚酯树脂、聚酯碳酸酯树脂、聚碳酸酯树脂等树脂的改性剂。另外，本发明提供作为树脂改性剂有用的环式二醇化合物、其制造方法。本发明涉及包含通式(1)所示的化合物的树脂改性剂等。#imgabs0#[式中，R1相同或不同，各自表示氢原子、氟原子、氯原子、溴原子、苯基或者碳原子数1～4的直