A kind of preparation method of crystalline polyester and product thereof

A technology for crystalline polyester and products, applied in the field of preparation of crystalline polyester, can solve the problems of lack of efficient catalytic system reaction conditions, polymers not reported to have crystallinity, difficulty in copolymerizing isobutylene oxide, and the like, achieving no need for post-treatment Purification steps, rich variety, good universal effect
CN112210073BActive Publication Date: 2021-11-16ZHEJIANG UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
ZHEJIANG UNIV
Publication Date
2021-11-16

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Abstract

The invention discloses a preparation method of crystalline polyester, which takes isobutylene oxide and cyclic acid anhydride as raw materials, adopts double metal cyanide complex as catalyst, and conducts polymerization reaction and post-treatment to obtain a polymer product; and then the polymer product is placed in a Crystallization is induced in the poor solvent of the polymer product, and the crystalline polyester is obtained after drying. In the preparation method, a crystalline polyester is prepared by selecting a raw material monomer with a specific structure and a suitable catalytic system, and combining with an induced crystallization process after polymerization.
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Description

technical field

[0001] The invention belongs to the field of polymer material synthesis, and in particular relates to a preparation method of crystalline polyester and a product thereof. Background technique

[0002] Isobutylene oxide (also known as methyl propylene oxide) is an important organic intermediate, which can be used to prepare more than 70 kinds of chemical products such as 2-methoxy-2-methyl-1-propanol and isobutylene sulfide. It can be used in the synthesis and production of polyether and medicine, and has great application value. It can be prepared by the epoxidation of olefins, and it can be directly used as a monomer to obtain high value-added polymer materials. However, compared with common epoxy compounds, the special structure of isobutylene oxide, especially two methyl substitutions , making it easy for cationic ring opening and difficult to copolymerize with other monomers.

[0003] As early as 1988, some literature (Vysokomol.soyed.A30:No.8,1766-1770...

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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