Bipyridine bisphenol-aluminum catalyst for preparing unsaturated polyester and preparation method

A bipyridyl bisphenol and catalyst technology, which is applied in the field of bipyridine bisphenol-aluminum catalyst for preparing unsaturated polyester and its preparation, can solve the problems of lack of high activity and low biological toxicity metal-organic complex catalytic system and the like, Achieving the effect of simple and efficient synthesis method
CN110483748AActive Publication Date: 2019-11-22TIANJIN UNIV
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Patent Information

Authority / Receiving Office
CN ยท China
Current Assignee / Owner
TIANJIN UNIV
Publication Date
2019-11-22

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Abstract

The invention relates to a bipyridine bisphenol-aluminum catalyst for preparing unsaturated polyester and a preparation method. The structural formula of the bipyridine bisphenol-aluminum complex is shown as I; wherein the X group is Cl, CH3COO, CF3COO or NO3, and the R1 group, the R2 group, the R3 group and the R4 group are simultaneously or independently H, a halogen atom, an alkoxy group, an alkane group or a substituted alkane group, aromatic hydrocarbon groups or substituted aromatic hydrocarbon groups. The preparation method comprises the following steps: preparing a bipyridine bisphenolligand with R1, R2, R3 and R4 through reaction of 2, 4-disubstituted phenol; and dissolving in a good solvent, adding into a good solvent of a metal aluminum source, and reacting to obtain the catalyst, and X-ray single crystal diffraction shows that the coordination compound has a distorted tetragonal pyramid structure. Unsaturated polyester is prepared by using the synthesized catalyst. The polyester segment content of the obtained unsaturated polyester is greater than 99%, and the catalyst can be further copolymerized with a vinyl monomer to prepare unsaturated polyester resin.
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Description

Technical field

[0001] The invention relates to the synthesis of bipyridine bisphenol-aluminum catalyst and the technical field of alternate copolymerization of cyclic anhydrides and epoxy compounds to prepare unsaturated polyesters, and specifically refers to a bipyridine bisphenol-aluminum catalyst and a preparation method, maleic anhydride, etc. Other unsaturated anhydride / epoxy alternate copolymerization to prepare unsaturated polyester. Background technique

[0002] Aliphatic polyester is an important type of environmentally friendly and degradable polymer material, which has received extensive attention from academia and industry. The methods for synthesizing polyester mainly include dibasic acid / diol condensation polymerization, cyclic ester or lactone ring-opening polymerization, and cyclic anhydride / epoxy ring-opening alternating copolymerization. Condensation polymerization is a gradual polymerization, while ring-opening polymerization and ring-opening alternating copo...

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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