METHOD FOR PRODUCING COPOLYMER LATEX, METHOD FOR PRODUCING RUBBER COMPOSITION FOR TIRE TREAD AND METHOD FOR PRODUCING PNEUMATIC TIRE

To provide a method for producing a copolymer latex capable of providing a rubber composition for a tire tread which can improve low fuel consumption, abrasion resistance and wet grip performance in good balance while obtaining good productivity, filler dispersibility and processability and a pneuma...

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Bibliographische Detailangaben
Hauptverfasser:	YOSHIYASU ISATO, MISAKI KOYU, KAMIIKE RYOTA
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	CHEMISTRY COMPOSITIONS BASED THEREON DEVICES OR ARRANGEMENTS RELATED TO TYRES MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS 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 method for producing a copolymer latex capable of providing a rubber composition for a tire tread which can improve low fuel consumption, abrasion resistance and wet grip performance in good balance while obtaining good productivity, filler dispersibility and processability and a pneumatic tire having a tread prepared by using the rubber composition.SOLUTION: There is provided a method for producing a copolymer latex which completes the polymerization reaction with a polymer conversion rate of 85% or more, which comprises a step of adding a chain transfer agent in the course of the polymerization in subjecting a monomer component containing an aliphatic conjugated diene monomer and an itaconic acid ester monomer to emulsion polymerization.SELECTED DRAWING: None 【課題】良好な生産性、充填剤分散性、加工性を得ながら、低燃費性、耐摩耗性、ウェットグリップ性能をバランス良く改善できるタイヤトレッド用ゴム組成物、及び該ゴム組成物を用いて作製したトレッドを有する空気入りタイヤを提供することができる、共重合体ラテックスの製造方法を提供する。【解決手段】脂肪族共役ジエン系単量体、及びイタコン酸エステル単量体を含有する単量体成分を乳化重合するにあたり、連鎖移動剤を重合途中に添加する工程を有し、ポリマー転化率８５％以上で重合反応を終了させる、共重合体ラテックスの製造方法。【選択図】なし