Modified conjugated diene polymer and polymer composition including said modified conjugated diene polymer
AssigneeKuraray Co., Ltd.
InventorDaisuke Koda
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Abstract
The present invention provides a modified conjugated diene polymer that has excellent hydrophilicity and is useful for modification of polar polymers. The present invention also provides a modified conjugated diene polymer and a polymer modifier that, when used for modification of a polar polymer, can enhance characteristics, for example, flexibility, of the composition including the polymer and also offer excellent processability and shaping properties. The present invention further provides a polymer composition including such a conjugated diene polymer. A polymer modifier (A) includes a modified conjugated diene polymer (A1) having a hydrophilic group having a polyethylene glycol structure.
Claims5
A polymer composition, comprising:
- a polymer modifier (A) that is a modified conjugated diene polymer (α) having a hydrophilic group, the hydrophilic group having a polyethylene glycol structure;
- and
- a polar polymer (B) selected from the group consisting of a polyamide, a polyester, a polyurethane, a polyvinyl alcohol and a curable polar polymer, wherein
- an amount of modification with the hydrophilic group is 1 to 400 parts by mass with respect to 100 parts by mass of the conjugated diene polymer before modification, and
- the modified conjugated diene polymer (α) has a melting point of not more than 60° C. or shows no melting point.
Dependencies are inferred from the claim text.