RADIAL TIRE FOR HEAVY CAR,申请号JP19830190698-传众专利搜索

RADIAL TIRE FOR HEAVY CAR

申请公布号：JPS6082407(A)

申请号：JP19830190698

申请日期：1983.10.14

申请公布日期：1985.05.10

申请人：

BRIDGESTONE KK

发明人：OKAMOTO KEIZOU;MAMADA MAMORU

分类号：B60C9/08;B60C1/00;B60C3/00;B60C11/00;B60C11/04

主分类号：B60C9/08

摘要：PURPOSE:To manufacture a tire with low fuel consumption and high WS by specifying the groove angle of a main groove and the negative ratio of a contact section and then specifying the composition of the rubber layer of the contact section, the compliance after vulganization, loss modulus, compression modulus. CONSTITUTION:A rubber layer 4 of a contact section uses the blending composition that contains 100pts.wt. of rubber components including natural rubber, isoprene rubber or both blended rubber, 35-60pts.wt of carbon black whose iodine adsorption amount is 70-150mg/g and DBP oil absorption amount is 60-130ml/100g, and 0.1-10pts.wt of nitroso quinoline compound, and of which compliance after vulganization is 2X10<-10>-12X10<-10>cm<2>/dyne, of which loss modulus is 0.5X10<6>-4X10<6>dyne/cm<2>, and of which compression modulus at 90 deg.C is 4kg/cm<2>. Besides, the groove angle of a main groove 6 is set to 5-25 deg. and the negative ratio of the contact section 4 is set to 10-35%. As a result, a tire with low fuel consumption, high WS, and low heat generation can be obtained.