A high softening point terpene styrene resin and a method for preparing the same

By controlling the reaction temperature and styrene ratio through the copolymerization reaction of styrene and myrcene in butyl acetate, a terpene styrene resin with a softening point ≥130℃ was prepared, which solved the problem of insufficient softening point of existing resins, met the requirements of high-temperature applications and improved the adhesive performance.

CN121378552BActive Publication Date: 2026-07-24SHAOGUAN LINHE FOREST PROD TECH CO LTD
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Patent Information

Application Number
CN202511807330.6
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2025-12-03
Publication Date
2026-07-24
Estimated Expiration
2045-12-03

AI Technical Summary

Technical Problem

The existing terpene styrene resin has a softening point of only 100°C, which cannot meet the application requirements in high-temperature fields.

Method used

Styrene and myrcene were copolymerized in butyl acetate, and the reaction temperature was controlled within a low range to form a terpene styrene resin with higher molecular weight and longer molecular chains. By adjusting the ratio of styrene and myrcene and the choice of solvent, the softening point of the resin was increased to ≥130℃.

Benefits of technology

The softening point of terpene styrene resin has been reduced to 130℃, meeting the requirements for high-temperature applications, while also reducing preparation costs and improving adhesion to polar substrates, thus having higher application value.

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Abstract

The application discloses a high-softening-point terpene styrene resin and a preparation method thereof, and belongs to the technical field of polymer materials. The technical scheme is as follows: a high-softening-point terpene styrene resin is prepared by the following technical scheme: a preparation method of a high-softening-point terpene styrene resin comprises the following steps: S1, mixing styrene and myrcene to obtain a mixed monomer; S2, uniformly mixing butyl acetate and a catalyst at a temperature of less than or equal to 15 DEG C; S3, adding the mixed monomer dropwise when the temperature of the system in step S2 is less than or equal to 10 DEG C, and after the dropwise addition is completed, heat preservation and discharging are carried out to obtain a polymerization liquid; and S4, distilling the polymerization liquid after the polymerization liquid is washed to neutral with hot water to obtain the high-softening-point terpene styrene resin. The combination of styrene, myrcene and butyl acetate can form the terpene styrene resin with higher molecular weight and longer molecular chain, so that the softening point of the terpene styrene resin is greater than or equal to 130 DEG C.
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Citation Information

Patent Citations

  • Block copolymers containing a copolymer myrcene block

    US20150284606A1

  • Triblock polymers of a monovinyl aromatic compound and myrcene

    US4374957A