Method for catalyzing ring-opening polymerization of cyclic ester by zinc catalyst

A technology of ring-opening polymerization and zinc catalyst, which is applied in the field of polymer synthetic materials, and achieves the effect of wide application prospects, different structures and properties, and good monomer universality
CN112079999AActive Publication Date: 2020-12-15QINGDAO INST OF BIOENERGY & BIOPROCESS TECH CHINESE ACADEMY OF SCI
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
QINGDAO INST OF BIOENERGY & BIOPROCESS TECH CHINESE ACADEMY OF SCI
Publication Date
2020-12-15

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Abstract

The invention discloses a method for catalyzing ring-opening polymerization of cyclic ester by a zinc catalyst, and belongs to the technical field of polymer synthetic materials. The problems that anexisting zinc catalyst for catalyzing ring opening of cyclic ester needs the participation of support ligands, and reaction activity and controllability are improved by changing steric hindrance and electrical property of central metal are solved. According to the invention, under the catalysis of a bis(hexaalkyldisilazane)zinc catalyst, lactone is initiated by an alcohol compound to carry out a ring-opening polymerization reaction, and a polyester material with rich structure is obtained. The catalyst adopted by the invention is a green and environment-friendly bis(hexaalkyldisilazane)zinc catalyst which does not need ligand participation, efficient and high-controllable active polymerization of different lactones can be realized under mild conditions, and the monomer universality is verygood, so that various polyester materials with different structures are obtained. The system has good universality for ring-opening polymerization of cyclic ester monomers, catalyzes the synthesis ofvarious degradable polyester materials, and promotes the development of sustainable polymers.
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Description

technical field

[0001] The invention relates to a method for ring-opening polymerization of cyclic esters catalyzed by a zinc catalyst, which belongs to the technical field of polymer synthetic materials. Background technique

[0002] In recent years, with the shortage of petroleum resources, the intensification of white pollution caused by waste plastics, and the increasing awareness of environmental protection, sustainable polymers with green sources and degradable properties have been extensively studied. Aliphatic polyester is a typical sustainable polymer, which is widely used in food packaging, medical devices, Medical polymers and other fields have therefore received more and more attention.

[0003] For the exploration of synthesizing aliphatic polyesters, in the early stage, dicarboxylic acids and their derivatives were mainly prepared by condensation polymerization with diols. Product, it is difficult to obtain polyester material with higher molecular weight, and...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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