Abstract:
Improvement of stability of dynamic performance of pneumatic tire tread composition, by adding at least one of some esters such as phosphoric acid ester, fatty acid ester in a definite ratio to the known composition comprising styrene-rich SBR added with a processing oil and carbon black respectively in higher ratio for improving dynamic performance.
Abstract:
Improvement of stability of dynamic performance of pneumatic tire tread composition, by adding at least one of some esters such as phosphoric acid ester, fatty acid ester in a definite ratio to the known composition comprising styrene-rich SBR added with a processing oil and carbon black respectively in higher ratio for improving dynamic performance.
Abstract:
Improvement of stability of dynamic performance of pneumatic tire tread composition, by adding at least one of some esters such as phosphoric acid ester, fatty acid ester in a definite ratio to the known composition comprising styrene-rich SBR added with a processing oil and carbon black respectively in higher ratio for improving dynamic performance.
Abstract:
A rubber composition comprises natural rubber and/or a diene based synthetic rubber, and carbon black. The carbon black has a characteristic that a line-width .DELTA.H (mT) in an electron spin resonance (ESR) satisfies .DELTA.H (mT) ~ e0.11T-7.56 + 5 in which T is a colored transmittance (%) falling in a range of 100-60%.
Abstract:
Improvement of stability of dynamic performance of pneumatic tire tread composition, by adding at least one of some esters such as phosphoric acid ester, fatty acid ester in a definite ratio to the known composition comprising styrene-rich SBR added with a processing oil and carbon black respectively in higher ratio for improving dynamic performance.
Abstract:
PROBLEM TO BE SOLVED: To provide a method for thermally decomposing polymer waste, which is capable of suppressing the oxidation of carbide remaining after the thermal decomposition of the polymer waste. SOLUTION: In the method for thermally decomposing polymer waste comprising the step of heating an anaerobic gas within a heat exchanger 1 and the step of introducing the heated anaerobic gas into a thermal decomposition furnace 2 to store the polymer waste 5 and bringing the polymer waste 5 into direct contact with the anaerobic gas to generate a thermal decomposition gas, the gas flow rate of the anaerobic gas introduced within the thermal decomposition furnace 2 is regulated to a range of 0.0015-0.0095 m 3 /s[ntp]. COPYRIGHT: (C)2011,JPO&INPIT
Abstract:
PURPOSE:To obtain a rubber composition, improved in abrasion resistance and low heat build-up properties and useful as tires, hoses, conveyor belts, etc., by blending rubber with specific carbon black in a specified proportion. CONSTITUTION:The objective composition obtained by blending (A) 100 pts.wt. natural rubber and/or diene-based synthetic rubber with (B) 20-200 pts.wt. carbon black having characteristics of 85-250m /g, preferably 125-230m /g nitrogen adsorption specific surface area [(N2SA)A] and radical concentration (B) of the carbon black expressed in terms of spin concentration and number of spins/g measured by ESR as follows; B>=4.50e A. Furthermore, the aforementioned carbon black preferably has OH functional groups which are surface functional groups thereof capable of acetylating reaction with acetic anhydride at a concentration of the OH functional groups expressed by meq./g>=9.86X10 e A.
Abstract:
PURPOSE:To prepare a rubber compsn. which shows no processing difficulty due to viscosity increase and is lowly heat-generating, highly reinforced, and highly abrasion-resistant by compounding a rubber with a carbon black having a specified nitrogen adsorption specific surface area and showing a specific line width in its electron spin resonance spectrum. CONSTITUTION:A rubber compsn. useful for a tire, hose, conveyor belt, etc., is prepd. by compounding a natural and/or synthetic rubber with a carbon black which has the following characteristics: an N2SA value (a nitrogen adsorption specific surface area) of 130m /g or higher; a line width in the electron spin resonance spectrum(ESR) of 19.7(2.66X10 M) mT or lower (where mT means millitesla, and M is the N2SA value of 130m /g or higher); 24M4DPR oil absorption (dibutyl phthalate absorption after four compressions under 2400Psi of pref. 85ml/100g or higher; and the value of N2SA value minus CTAB value of 10m or lower.