嵌段共聚物的氢化物、树脂组合物和嵌段共聚物的氢化物的制造方法
By preparing hydrides containing specific block copolymers, the problem of insufficient impact resistance and flexibility of existing hydrogenated styrene elastomers in the low-temperature region was solved, and the material properties were improved at even lower temperatures.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- KURARAY CO LTD
- Filing Date
- 2021-12-17
- Publication Date
- 2026-07-17
AI Technical Summary
Existing hydrogenated styrene-based elastomers lack sufficient impact resistance and flexibility in low-temperature regions, especially at temperatures around -60°C or lower, where they have not been effectively improved.
By preparing hydrides of block copolymers comprising polymer blocks (A) and (B), wherein polymer block (A) contains aromatic vinyl compound units and polymer block (B) contains conjugated diene compound units other than butadiene, and controlling their hydrogenation rate and molecular weight, the crystallization of butadiene is suppressed and the glass transition temperature is lowered.
It achieves good rubber elasticity and impact resistance at temperatures around -60℃ and below, ensuring the material's softness and mechanical properties in low-temperature environments.
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