Polymeric additives

By introducing aromatic rings and reactive functional groups into polymer additives and adjusting the Hansen solubility parameters, the solubility and dispersibility problems of π-conjugated fillers in medium to high polar solvents and resins in the prior art have been solved, and good composite material properties have been achieved.

CN122249511APending Publication Date: 2026-06-19SEKISUI CHEMICAL CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SEKISUI CHEMICAL CO LTD
Filing Date
2024-11-29
Publication Date
2026-06-19

AI Technical Summary

Technical Problem

Existing polymer additives have low solubility in medium to high polar solvents and resins, making it difficult to effectively improve the dispersibility of π-conjugated fillers, leading to problems such as precipitation.

Method used

The additives, which have aromatic rings and reactive functional groups, are prepared by RAFT polymerization. The total solubility parameter δtot of Hansen is above 17 and below 24, and the maximum fluorescence peak is above 370 nm and below 410 nm. This improves the π-π interaction and dispersibility with the π conjugated filler.

Benefits of technology

The solubility and dispersibility of π-conjugated fillers are improved in medium to high polarity solvents and resins, ensuring the uniformity and physical properties of the composite material and avoiding precipitation.

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Abstract

The polymer additive of the present invention has an aromatic ring on the side chain or end of the polymer backbone, and has at least one reactive functional group in its molecular structure. The maximum fluorescence peak is in the range of 370 nm to 410 nm. The total Hansen solubility parameter δ shown in the following formula... tot It is 17 or higher and 24 or lower. (δ in the above formula) d δ p δ h (The dispersion term, polarity term, and hydrogen bonding term, respectively, represent the Hansen solubility parameters.) According to the present invention, a polymeric additive with high solubility in medium to high polar solvents, epoxy resins, acrylic resins, urethane resins, and other resins, and which can improve the dispersibility of π-conjugated fillers in these solvents and resins, can be provided.
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