Modified conjugated diene rubber, method for producing same, and rubber composition
AssigneeJsr Corporation
InventorRyouji Tanaka
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Abstract
According to a method for producing a modified conjugated diene rubber, the method involves a step of obtaining a modified conjugated diene rubber by reacting a conjugated diene compound or a conjugated diene polymer which is obtained by polymerizing a conjugated diene compound and an aromatic vinyl compound and has an alkali metal or alkaline-earth metal active end, with a first hydrocarbyloxysilane compound having an alkyl polyether group and a group convertible into an onium, and a conjugated diene rubber which can be used as a starting material for a crosslinked rubber that is used in applications such as a tire tread and is capable of improving the low fuel consumption performance is provided.
Claims13
A method for producing a modified conjugated diene rubber, the method comprising:
- (A) reacting a conjugated diene polymer comprising an alkali metal or alkaline-earth metal active end with a first hydrocarbyloxysilane compound comprising functional groups (a) and (b), thereby obtaining a modified conjugated diene rubber,
- wherein the conjugated diene polymer is obtained by a process comprising polymerizing a conjugated diene compound or a conjugated diene compound and an aromatic vinyl compound,
- the functional group (a) is an alkyl polyether group and the functional group (b) is a group convertible into an onium.
Dependencies are inferred from the claim text.