Modified conjugated diene-based polymer and production method therefor, rubber composition and tire
AssigneeAsahi Kasei Kabushiki Kaisha
InventorsMiki Kyo, Shinichi Sekikawa, Hiromi Nakafutami
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Abstract
The present invention provides a modified conjugated diene-based polymer having a weight-average molecular weight of 20×104 or more and 300×104 or less, in which the modified conjugated diene-based polymer having a molecular weight of 200×104 or more and 500×104 or less is comprised in an amount of 0.25% by mass or more and 30% by mass or less based on a total amount of the modified conjugated diene-based polymer, and a shrinking factor (g′) is less than 0.64.
Claims18
A branched modified conjugated diene-based polymer having a weight-average molecular weight of 50×104 or more and 300×104 or less, comprising:
- a modified conjugated diene-based polymer component having a molecular weight of 200×104 or more and 500×104 or less in an amount of 1.0% by mass or more and 30% by mass or less based on a total amount of the branched modified conjugated diene-based polymer;
- a silicon atom;
- and
- a shrinking factor (g′) of less than 0.64.
Dependencies are inferred from the claim text.