Copolymer containing functional group and prepared by C5 mixture and maleic anhydride, and preparation of copolymer

Abstract

The invention provides a copolymer containing a functional group and prepared by a C5 mixture and maleic anhydride and a preparation of the copolymer, belonging to the field of applications of C5 resource. The preparation method comprises the following steps of: adding monomer maleic anhydride and initiator azobisisobutyronitrile (AIBN) into ester medium under the protection of nitrogen, dissolving completely, adding C5 mixture into the system, and dissolving, wherein the mol ratio of the maleic anhydride and the C5 is 1:1, reacting for 0.05-7 hours at 50-90 DEG C so as to obtain a milky and stable solid-liquid disperse system of the copolymer of C5 and maleic anhydride, centrifugally separating and drying at vacuum condition so as to obtain the white solid powder of copolymer of C5 and maleic anhydride. According to the invention, the C5 mixture is directly used as the raw material to prepare the highly crosslinked copolymer containing the functional group in one-step reaction, in this way, the C5 resource is used reasonably and effectively.

Description

technical field [0001] The invention belongs to the application field of C5 resources, and in particular relates to preparing a highly cross-linked copolymer containing functional groups by directly reacting a C5 mixture with maleic anhydride (MAn). Background technique [0002] my country has abundant C5 resources, but due to some technical reasons, the chemical utilization rate of C5 has always been relatively low. How to use C5 resources reasonably and effectively is of great significance to our country, which is relatively scarce in resources. At present, the focus of C5 resource utilization is mainly on the production of large quantities of bulk chemical products and the use of single-component production of high value-added fine chemical products after C5 distillation and decomposition. Among them, the reports on the reaction of C5 fractions with maleic anhydride mainly include the following aspects. [0003] C5 petroleum resin is a kind of thermoplastic resin produc...

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Problems solved by technology

[0011] But because the composition of C5 mixture is very complex, the boiling point is close, more than 30 kinds of azeotropes can be formed with each other, and dienes are easy to polymerize, the separation of C5 fraction is very difficult, so it is an uneconomical method to separate the C5 fraction and then use it. method

It is also mentioned in the above report that the required polymer is prepared by directly reacting the C5 mixture with maleic anhydride, but the polymerization method is complicated and the polymerization process requires high requirements. Only diolefins react in the C5 mixture, and the effective utilization rate of the C5 mixture is not high. And the obtained polymers are all homologous tetrahydrophthalic anhydride mixtures, and the product type is single

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