POLYMER COMPOSITION, METHOD FOR PRODUCING THE SAME, RUBBER COMPOSITION, AND TIRE

To provide: a polymer composition which exhibits excellent cold flow resistance; a method for producing the same; a rubber composition containing the polymer composition; and a tire obtained using the rubber composition.SOLUTION: A polymer composition contains a diene-based polymer having a number a...

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Bibliographische Detailangaben
Hauptverfasser:	KUMAKI KENTARO, KOSAI TOMOYUKI, YAGI REIKO
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS DEVICES OR ARRANGEMENTS RELATED TO TYRES METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PERFORMING OPERATIONS REPAIRING, OR CONNECTING VALVES TO, INFLATABLE ELASTIC BODIESIN GENERAL THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING TYRE CHANGING OR REPAIRING TYRE INFLATION VEHICLE TYRES VEHICLES IN GENERAL
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Beschreibung
Zusammenfassung:	To provide: a polymer composition which exhibits excellent cold flow resistance; a method for producing the same; a rubber composition containing the polymer composition; and a tire obtained using the rubber composition.SOLUTION: A polymer composition contains a diene-based polymer having a number average molecular weight of 500,000 g/mol or more, and a resin having a value of %H Ar of 20% or more and a softening point of 110°C or more. The content of the resin is 20 pts.mass or more relative to 100 pts.mass of the diene-based polymer.SELECTED DRAWING: None 【課題】耐コールドフロー性に優れるポリマー組成物及びその製造方法、並びに、該ポリマー組成物を含むゴム組成物、及び該ゴム組成物を用いたタイヤを提供する。【解決手段】数平均分子量が５００，０００ｇ／ｍｏｌ以上であるジエン系ポリマーと、％ＨＡｒ値が２０％以上かつ軟化点が１１０℃以上の樹脂とを含有し、前記樹脂の含有量が、前記ジエン系ポリマー１００質量部に対し２０質量部以上であるポリマー組成物。【選択図】なし