The invention discloses a semi-functionalized asymmetric long-chain branched styrene-butadiene-isoprene random copolymer and preparation and application thereof, the expression of the copolymer is F-SIB/D, in the formula, F is a polar end-capping group; SIB is a styrene, butadiene and isoprene ternary random copolymer, S is a styrene unit, I is an isoprene unit, and B is a butadiene unit; D is a divinylbenzene branching unit randomly distributed in the SIB ternary random copolymer; the copolymer has the characteristics of asymmetric long chain branching, high side chain group, high intermolecular entanglement degree and the like, has good thixotropic and processability when being matched with BR, white carbon black and the like for mixing and processing, is very suitable for preparing high-performance radial tire tread rubber, and shows lower rolling resistance and excellent wet skid resistance.
本发明公开了一种半官能化不对称长链支化的苯乙烯‑丁二烯‑异戊二烯无规共聚物及其制备和应用,该共聚物表达式为F‑SIB/D,其中,F为极性封端基团;SIB为苯乙烯、丁二烯和异戊二烯三元无规共聚物,S为苯乙烯单元,I为异戊二烯单元,B为丁二烯单元;D为无规分布在SIB三元无规共聚物中的二乙烯苯枝化单元;该共聚物具有不对称性的长链枝化、高侧链基团及分子间纠结度高等特点,采用这种聚合物与BR及白碳黑等配合混炼加工具有良好的触变和加工性能,非常适宜制作高性能子午线轮胎胎面胶,体现出较低滚动阻力和极佳抗湿滑性能。
Semi-functionalized asymmetric long-chain branched styrene-butadiene-isoprene random copolymer and preparation and application thereof
一种半官能化不对称长链支化的苯乙烯-丁二烯-异戊二烯无规共聚物及其制备和应用
2021-12-03
Patent
Elektronische Ressource
Chinesisch
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 / C08K Verwendung von anorganischen oder nichtmakromolekularen organischen Stoffen als Zusatzstoffe , USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES AS COMPOUNDING INGREDIENTS / C08L COMPOSITIONS OF MACROMOLECULAR COMPOUNDS , Massen auf Basis makromolekularer Verbindungen |
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