Preparation method of polycaprolactone

A technology for polycaprolactone and caprolactone is applied in the field of preparing polycaprolactone, which can solve the problems of difficulty in degrading polymer materials, aggravating pollution, and restricting the rapid development of polymer materials, and achieves controllable molecular weight and metal residues. Less, the effect of various catalyst structure changes
CN104592501AInactive Publication Date: 2015-05-06UNIV OF JINAN
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
UNIV OF JINAN
Publication Date
2015-05-06
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a preparation method of polycaprolactone. The method comprises the following steps: mixing a catalyst, an organic solvent and caprolactone; carrying out ring-opening polymerization in the presence of anhydrous and anaerobic inert gases; treating a reactant to obtain polycaprolactone after reacting, wherein the catalyst is an amido anilino group lithium compound. With the amido anilino group lithium compound as a catalyst, the preparation method is good in reaction controllability, mild in condition, high in reaction rate and high in catalytic activity; polymerization reaction can be carried out without adding an alcohol-assisted catalyst; and the obtained polycaprolactone is controllable in molecular weight, high in productivity and few in metal residues. In addition, the polymerization reaction process is simple; a general solution polymerization method can be adopted; through control on polymerization reaction conditions, the molecular weight of the polymer can be regulated and controlled; and the obtained polymer is narrow in molecular weight distribution, has excellent physical and chemical characteristics, and can meet the requirements of the market.
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Description

technical field

[0001] The present invention relates to an aminoanilinolithium compound and a preparation method thereof, and also relates to a method for preparing polycaprolactone by using the aminoanilinolithium compound as a catalyst. Background technique

[0002] The birth of polymer materials based on petroleum has changed our lives. A variety of high-performance polymer materials have been ubiquitous in every corner of our daily life, bringing unprecedented convenience to our lives, but What people worry about is that under the background of increasing global oil tension, the rapid development of polymer materials dependent on petroleum raw materials is greatly restricted. Moreover, high molecular polymer materials are difficult to degrade, and a large amount of high molecular polymer material waste has accumulated in real life for a long time, which has gradually increased the pollution of the human living environment. Traditional polymer materials are facing the tw...

Claims

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