TH9298A - Carbon Black for tires used to make retread tires. - Google Patents

Abstract

The carbon black of the hard carbon black type with a specific surface area, nitrogen absorption (N2SA), is 120 to 165 sq m / g. And the DBP bioavailability figure is 120 ml / 100 g or more, and there is a satisfactory effect respectively when represented by the following formulas (1) and (2) (chemical formulas) in formulas (1) and (2) dn. Is the arithmetic mean diameter (namometer) measured with an electron camera. (Triangle) Dst (Namometer) The difference between the two stoke diameters, each obtained in a frequency of 50% of the maximum frequency in the distribution curves of the aggregated stoke diameter, Dst (Namo M) is the stoke diameter of the highest frequency in the aggregated stoke diameter distribution curve, N2SA is the nitrogen absorption specific surface area (sq m / g) and IA is the absorption number. Iodine (mg / g)

Claims (1)

1. Carbon black of hard carbon black type with specific surface area, nitrogen adsorption (N2SA) is 120 to 165 m2 / g, and DBP absorption figure is 120 ml / 100. G to 138 ml / 100 g, and there are satisfactory results respectively when represented by the following formulas (1) and (2) (chemical formula), where dn is the arithmetic mean diameter (namometer) measured by a microscope. Electronica (Triangle) Dst (Namometer) is the difference between the two stoke diameters. Each of which is measured in the frequency range 50% of the maximum frequency in the aggregated stoke diameter distribution curve. Dst (Namometer) is the stoke diameter of the maximum frequency in the distribution curve of the The aggregated stoke diameter, N2SA, is the nitrogen absorption specific surface area (m2 / g) and IA ~ is the iodine absorption number (mg / g).