Modified conjugated diene-based polymer and rubber composition including the same
AssigneeLG Chem, Ltd.
InventorsHae Sung Sohn, Tae Chul Lee, He Seung Lee, No Ma Kim, Sun Keun Kim, Youk Reol Na, Kyung Chang Seo, Heung Yeal Choi
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Abstract
A modified conjugated diene-based polymer, and more particularly, a modified conjugated diene-based polymer having a unimodal molecular weight distribution curve measured by gel permeation chromatography (GPC), molecular weight distribution (PDI; MWD) of less than 1.7, and a Si content of 100 ppm or more based on weight, and including a repeating unit derived from an aromatic vinyl monomer in an amount of 30 wt % or more, and a rubber composition including the same.
Claims20
A modified conjugated diene-based polymer having:
- a unimodal molecular weight distribution curve measured by gel permeation chromatography (GPC),
- a molecular weight distribution of less than 1.7,
- a Si content of 100 ppm or more based on a total weight of the modified conjugated diene-based polymer, wherein the Si content is measured by an inductively coupled plasma (ICP) analysis method, and
- the modified conjugated diene-based polymer comprising a repeating unit derived from an aromatic vinyl monomer in an amount of 30 wt % or more based on the total weight of the modified conjugated diene-based polymer.
A modified conjugated diene-based polymer having:
- a unimodal molecular weight distribution curve of a polymer component having a molecular weight of 100,000 g/mol or more measured by gel permeation chromatography (GPC) with polystyrene as a standard for calculating molecular weight,
- a molecular weight distribution of 2.0 or less,
- a number average molecular weight (Mn) of 250,000 g/mol to 700,000 g/mol,
- a vinyl content of a butadiene unit of 20 mol % to 80 mol %,
- a Si content of 100 ppm or more based on a total weight of the modified conjugated diene-based polymer, and
- a content of the polymer component having a functional group of 50 wt % or more based on the total weight of the modified conjugated diene-based polymer, and
- the modified conjugated diene-based polymer comprising a repeating unit derived from an aromatic vinyl monomer in an amount of 30 wt % or more based on a total weight of the modified conjugated diene-based polymer.
Dependencies are inferred from the claim text.