The present invention provides a sealant material composition which can suppress the flow of a sealant during travel, can ensure good sealing properties, and can balance these properties in a good manner. As a sealant material composition constituting a sealant layer (10) provided on the inner surface of a pneumatic tire, a sealant material composition in which the ratio (A) of a toluene-insoluble component in the sealant material composition is 30-60 mass% is used, or a sealant material composition in which the ratio (A) of the toluene-insoluble component in the sealant material composition is 30-60 mass% is used as a sealant material composition constituting a sealant layer (10) provided on the inner surface of the pneumatic tire. The ratio (d1/d2) of the specific gravity (d2) of the sealant material composition, which is calculated from the specific gravity and the blending amount of each raw material included in the sealant material composition, is 0.7-0.9.
本发明提供在抑制密封剂在行驶期间的流动的同时,可确保良好的密封性,能够平衡良好地兼顾这些性能的密封剂材料组合物。作为构成设置在充气轮胎的内表面上的密封剂层10的密封剂材料组合物,使用甲苯不溶性成分在密封剂材料组合物中所占的比率A为30质量%~60质量%的密封剂材料组合物,或者使用通过水中置换法测定的密封剂材料组合物的测定比重d1,与由密封剂材料组合物中包含的各原材料的比重和配合量算出的密封剂材料组合物的计算比重d2之比d1/d2为0.7~0.9的密封剂材料组合物。
SEALANT MATERIAL COMPOSITION
密封剂材料组合物
17.03.2023
Patent
Elektronische Ressource
Chinesisch