The invention relates to the field of polymers, and discloses a monovinylarene-conjugated diene polymer as well as a preparation method and application thereof. The polymer contains an oligomer and a high polymer, the oligomer is of a linear structure, the number-average molecular weight of the oligomer is 5000-60000 g/mol, the high polymer contains a linear high polymer composed of a monovinyl aromatic hydrocarbon-conjugated diene polymeric chain and a coupling high polymer, the number-average molecular weight of the monovinyl aromatic hydrocarbon-conjugated diene polymeric chain is 80000-3000000 g/mol, and the number-average molecular weight of the coupling high polymer is 80000-3000000 g/mol. The content of a structural unit from monovinylarene in the polymer is 15-45% by weight, the content of a structural unit from conjugated diene is 55-85% by weight, and the tail ends of the oligomer and the linear high polymer have structures closed by a silicon-containing compound. The high-molecular-weight polymer and the low-molecular-weight polymer are moderate in content, and the high-molecular-weight polymer and the low-molecular-weight polymer have excellent strength and dynamic performance.
本发明涉及聚合物领域,公开了一种单乙烯基芳烃‑共轭二烯烃聚合物及其制备方法和应用。该聚合物含有低聚物和高聚物,低聚物为线型结构,数均分子量为5000‑60000g/mol,高聚物含有单乙烯基芳烃‑共轭二烯烃聚合链构成的线性高聚物以及偶联高聚物,所述单乙烯基芳烃‑共轭二烯烃聚合链的数均分子量为80000‑300000g/mol,且所述聚合物中的来自单乙烯基芳烃的结构单元的含量为15‑45重量%,来自共轭二烯烃的结构单元的含量为55‑85重量%,并且,所述低聚物和所述线性高聚物的末端具有被含硅化合物封闭的结构。本发明的聚合物的高、低分子量聚合物的含量适中,具有优异的强度和动态性能。
Monovinylarene-conjugated diene polymer as well as preparation method and application thereof
单乙烯基芳烃-共轭二烯烃聚合物及其制备方法和应用
2023-12-01
Patent
Electronic Resource
Chinese
IPC: | C08F MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS , Makromolekulare Verbindungen, erhalten durch Reaktionen, an denen nur ungesättigte Kohlenstoff-Kohlenstoff-Bindungen beteiligt sind / B60C VEHICLE TYRES , Fahrzeugreifen / C08C TREATMENT OR CHEMICAL MODIFICATION OF RUBBERS , Behandlung oder chemische Modifizierung von Kautschuken / C08L COMPOSITIONS OF MACROMOLECULAR COMPOUNDS , Massen auf Basis makromolekularer Verbindungen |
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