Rubber composition for tire tread and pneumatic tire
    63.
    发明专利
    Rubber composition for tire tread and pneumatic tire 有权
    轮胎和气胎的橡胶组合物

    公开(公告)号:JP2012241158A

    公开(公告)日:2012-12-10

    申请号:JP2011114984

    申请日:2011-05-23

    Inventor: KAMATA SHINSAKU

    Abstract: PROBLEM TO BE SOLVED: To provide a rubber composition for a tire tread that improves the balance between the rolling resistance performance and the wet performance.SOLUTION: This rubber composition is obtained by mixing silica, a silane coupling agent, a lignin derivative, and a carbon masterbatch into a modified styrene butadiene rubber having a functional group such as an amino group or a hydroxyl group. The carbon masterbatch is obtained by mixing a carbon black having an iodine adsorption of 60-130 g/kg into a styrene butadiene rubber. The ratio of the amount (B) of a rubber in the carbon masterbatch to the amount (A) of the modified diene rubber is B/A=0.25-1. The total amount of the carbon black and the silica is 40-100 pts.mass based on 100 pts.mass of a rubber component, the ratio of the silica to a filler is 25-80 mass%, and the amount of the lignin derivative is 0.1-10 pts.mass.

    Abstract translation: 要解决的问题:提供一种用于轮胎胎面的橡胶组合物,其改善了滚动阻力性能和湿性能之间的平衡。 解决方案:该橡胶组合物通过将二氧化硅,硅烷偶联剂,木质素衍生物和碳母料混合到具有诸如氨基或羟基等官能团的改性苯乙烯丁二烯橡胶中而获得。 将碳吸附量为60〜130g / kg的炭黑与苯乙烯丁二烯橡胶混合,得到碳母粒。 碳母粒中橡胶的量(B)与改性二烯橡胶的量(A)之比为B / A = 0.25-1。 炭黑和二氧化硅的总量基于100重量份的橡胶组分为40-100重量份,二氧化硅与填料的比例为25-80质量%,木质素衍生物的量 是0.1-10 pts.mass。 版权所有(C)2013,JPO&INPIT

    Hot melt adhesive
    68.
    发明专利
    Hot melt adhesive 有权
    热熔胶

    公开(公告)号:JP2012180525A

    公开(公告)日:2012-09-20

    申请号:JP2012099832

    申请日:2012-04-25

    Abstract: PROBLEM TO BE SOLVED: To provide a hot melt adhesive applicable at low temperature, having high heat resistance.SOLUTION: The hot melt adhesive applicable at low temperature includes: 20-40 wt.% of a polymer blend (a) that contains an n-butylacrylate copolymer (i) comprising 15-35 wt.% of n-butylacrylate and an ethylene-vinylacetate copolymer (ii) comprising 10-45 wt.% of vinylacetate; 25-45 wt.% of a tackifier resin (b) having a softening point of 90-120°C; and 25-45 wt.% of a wax (c) having a melting point of 54-77°C, wherein the adhesive is based on the total weight of the wt.% (percent by weight). The adhesive has viscosity from 0.8 to 1.5 Pa s at adhesive-applying temperature of ≤121°C, wherein the heat stress value of the linked adhesive and the adhesive-applying temperature, shown by temperature at which stressed linking is broken, are separated by only 38°C(100°F).

    Abstract translation: 要解决的问题:提供适用于低温下的耐热性高的热熔粘合剂。 适用于低温的热熔粘合剂包括:含有丙烯酸正丁酯共聚物(i)的20-40重量%的聚合物共混物(a),其包含15-35重量%的丙烯酸正丁酯和 包含10-45重量%的乙酸乙烯酯的乙烯 - 乙酸乙烯酯共聚物(ⅱ) 25-45重量%的软化点为90-120℃的增粘树脂(b); 和25-45重量%的熔点为54-77℃的蜡(c),其中粘合剂基于重量%(重量%)的总重量。 粘合剂在粘合剂施加温度≤121℃时具有0.8至1.5Pa s的粘度,其中连接的粘合剂的热应力值和由应力连接断裂的温度所示的粘合剂施加温度由 只有38°C(100°F)。 版权所有(C)2012,JPO&INPIT

Patent Agency Ranking