RUBBER COMPOSITION

• Main Authors: MATSUO NARUAKI, SAIKI AYA, SASAHARA YUICHI
• Format: Patent
• Language: English; Japanese
• Published: 02.11.2017
• Subjects: 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; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS; VEHICLE TYRES; VEHICLES IN GENERAL

PROBLEM TO BE SOLVED: To provide a rubber composition materializing low kinetic viscosity of an unvulcanized rubber.SOLUTION: The rubber composition is provided that is obtained by blending a rubber component with a phenol resin obtained by polymerizing phenols having an alkyl group having 1 to 16 carbon atoms and aldehydes having 1 to 16 carbon atoms excluding a CHO group. The rubber component contains 60 mass% or more of natural rubber with respect to the total mass of the rubber component, and an amount of the phenol resin to be blended is 0.5 pts.mass or more and 10 pts.mass or less with respect to 100 pts.mass of the rubber component.SELECTED DRAWING: None 【課題】未加硫ゴムの動粘度が低いゴム組成物を提供すること。【解決手段】本発明に係るゴム組成物は、ゴム成分と、炭素数１以上１６以下のアルキル基を有するフェノール類と、ＣＨＯ基を除いた炭素数が１以上１６以下のアルデヒド類とを重合させてできるフェノール樹脂とが配合されてなり、該ゴム成分は、該ゴム成分の全質量基準で６０質量％以上の天然ゴムを含み、該フェノール樹脂の配合量が、ゴム成分１００質量部に対して、０．５質量部以上１０質量部以下である。【選択図】なし