Tsinghua University

Yi-Ya Liao

Chien-Tien Chen

Ya-Pei Chen

A method for oxidative cleavage of a compound with an unsaturated double bond is provided. The method includes the steps of:  

Method for oxidative cleavage of compounds with unsaturated double bond

A block copolymer and a method for preparing the same are disclosed. The method comprises the following steps: (A) mixing a compound of formula (I), a catalyst of formula (II), and a first solvent to obtain a first mixture; (B) adding a first monomer into the first mixture for reaction to obtain a second mixture; and (C) adding a second monomer into the second mixture for reaction to obtain a third mixture; wherein the compound of formula (I) and the catalyst of formula (II) are as defined in the specification.

Block copolymer and method for preparing the same

An esterification method of a copolymer is disclosed. The esterification method includes the steps of: (A) mixing a copolymer having a carboxylic acid group, an alcohol or an aminoalcohol compound, a catalyst of formula (I), and a first solvent to obtain a first mixture; (B) reacting the first mixture at a predetermined temperature to obtain a second mixture; and (C) adding the second mixture into a second solvent; wherein the catalyst of formula (I) is shown below:[M(O)]X&#x2003;&#x2003;(I)wherein M, X, a, b, in, and n are defined in the specification.

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Hsinchu, Taiwan

Yi-Ya Liao