A modified natural rubber has a branching degree of 0.40 to 0.70 and includes a linking structure represented by formula (C), the linking structure having been formed by allowing polyisoprene, having a structure represented by formula (A) and/or formula (B), to bind in the structure to an amino compound having two or more primary amino groups:wherein X represents a hydrogen atom or a methyl group, and Ps, which may be the same or different from each other, represent a polyisoprene unit;W-(Q)m (C)wherein W represents a residue obtained by removing amino end groups from the amino compound Q represents at least one selected from the group consisting of the following general formulae (Q-1) to (Q-4), and m represents 2 to 4;wherein *1 indicates binding to a carbon atom of a polyisoprene unit, and *2 indicates binding to a carbon atom of the residue represented by W.
Modified natural rubber, rubber composition using the rubber, and pneumatic tire using the composition
2023-05-23
Patent
Elektronische Ressource
Englisch
IPC: | C08L COMPOSITIONS OF MACROMOLECULAR COMPOUNDS , Massen auf Basis makromolekularer Verbindungen / B60C VEHICLE TYRES , Fahrzeugreifen / 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 |
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