Guanidine oligomer and its preparation method and its application bonded to general polymer molecular chains

Abstract

A guanidine oligomer, a method for preparing same, and an application of the guanidine oligomer for being bonded to a molecular chain of a universal polymer. Compared with the prior art, a non-polar long-chain aliphatic R group structure is used for end-capping to obtain a guanidine oligomer end-capped with R which is -(CH2)4-18CH3. There are two extremely favorable results for doing this. First, due to the end-capping with the R group, the original tetrafunctionality is reduced to bifunctionality; during a bonding reaction with a polymer, no cross-linked structure would be formed, but an overhanging structure on a molecular chain is formed; and this is favorable for dispersion on the surface of a material. Moreover, due to the non-polar long-chain aliphatic R group structure, it is easy to achieve distribution on the surface in a non-polar polyolefin, so as to pull the molecular chain of the guanidine oligomer toward the surface and exerting its functionalization. The guanidine oligomer can be widely used in the fields of universal high / low molecular weight polyolefins and universal condensation polymers, and make the universal high / low molecular weight polyolefins and universal condensation polymers antistatic, easy to dye, and resistant to harmful microorganisms.

Description

technical field [0001] The invention relates to the fields of daily necessities, biological materials and chemical products, in particular to a guanidine oligomer, a preparation method thereof and the application of bonding on a universal polymer molecular chain. Background technique [0002] Guanidine and its oligomers have excellent anti-harmful microbial functions, so they have been widely used in the medical and health field. In recent years, guanidines and their oligomers have become more and more obvious to show the trend of developing into the fields of medical and health materials, biological materials and daily necessities materials. Peng Kaimei et al., Acta Chemical Sinica, 2016, 74, 713-725, disclosed in detail the research and application of guanidines and their oligomers at home and abroad, as well as their development trends. [0003] CN1292397 B, CN1350022, CN1351086, US 7,282,538 B2, EP 1486519 B1, Japanese Patent Application No. 2003-576488, and US 7,531,22...

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Problems solved by technology

[0011] However, there is a common problem and deficiency in many of the above-mentioned inventions, or in the molecular structure of the guanidine oligomer itself

That is, in the process of oligomer condensation polymerization, the amine groups at both ends are not primary amines or guanidine salt amine groups, so whether it reacts with epoxy groups, isocyanate groups, carboxylic acids or acid anhydrides, it is tetrafunctional. , so cross-linking is very easy to occur during bonding reactions such as grafting and block, which not only seriously affects the mechanical properties of the material, but also makes the guanidine oligomers trapped inside the material and cannot function

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