TH4845B - Carbon Black for tires used to make retread tires. - Google Patents

Abstract

Carbon black of the hard carbon black type with a specific nitrogen adsorption surface area (N2SA) of 120 to 165m3/g. and the bioavailability figures for DBP are 120 mL/100 g or more and have satisfactory results, respectively, when substituted by the following formulas (1) and (2) (chemical formula) in formulas (1) and (2) dn. is the arithmetic mean diameter (namometer) as measured by an electron camera. (Triangle)Dst (namometer) The difference between the two stoke diameters, each of which is 50% of the peak frequency in the dispersion curve of the assembled stoke diameters. m) is the stoke diameter of the highest frequency in the condensed stoke diameter distribution curve, N2SA is the specific nitrogen absorption surface area (m/g) and IA is the absorption figure. 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 were 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 Dst. The aggregated stoke diameter, N2SA, is the nitrogen absorption specific surface area (m2 / g) and the IA ~ is the iodine absorption number (mg / g).