Abstract:
A reinforcing aluminum-based filler which can be used for reinforcing diene rubber compositions intended for the manufacture of tires, comprising an aluminum (oxide-)hydroxide corresponding, with the exception of any impurities and the water of hydration, to the general formula (a and b being real numbers): Al(OH)aOb, with 0
Abstract:
A lubricant composition for lubricating an interface between an inner surface of a tire and a safety support ring in a run-flat tire system that includes a lubricating agent selected from glycerol, polyalkylene glycol or combinations thereof and a thixotropic agent. The thixotropic agent is an organoclay comprising a mineral clay mixture treated with an alkyl quaternary ammonium salt, wherein the mineral clay mixture comprises at least one of sepiolite, palygorskite and a smectite and wherein a combined amount of palygorskite and sepiolite in the mineral clay mixture is between about 50 wt. % and about 100 wt. % with a balance of the mineral clay mixture being essentially the smectite. The lubricating agent may also be selected from a copolymer that is a mixture of alkylene oxides, preferably a mixture of ethylene oxide and propylene oxide.
Abstract:
The present invention concerns a lubricant composition that can be used to lubricate an interface between a tire and a safety support mounted on a wheel rim inside the tire, the tire and a mounted assembly for an automotive vehicle being provided with the lubricant composition, wherein the lubricant composition according to the invention is characterized in that it comprises an alkene oxide polymer (polyoxyalkene) as the lubricating agent and between 4.0% and 7.5% (% by weight of the lubricant composition) of silica as a thickening agent.
Abstract:
A reinforcing aluminum-based filler which can be used for reinforcing diene rubber compositions intended for the manufacture of tires, comprising an aluminum (oxide)hydroxide corresponding, with the exception of any impurities and the water of hydration, to the general formula (a and b being real numbers): Al(OH)aOb, with 0
Abstract:
A rubber composition usable for the manufacture of tires, based on at least one diene elastomer, one reinforcing inorganic filler and a coupling agent providing the bond between the inorganic filler and the elastomer. The inorganic filler comprises a synthetic aluminosilicate of the formula: MxSiAlyOa(OH)b, (H2O)c (I) in which: M is a cation selected from of K+, Na+, Ca++ and mixtures of these cations; x>0; y>0; a≧0; b≧0, c≧0 and a+b>0, and having the following characteristics: (a) a BET specific surface area of between 20 and 300 m2/g; (b) an average particle size by mass (dw) of between 20 and 400 nm; and (c) an ultrasound disagglomeration rate (α) greater than 5×10−4 μm−1/min.
Abstract translation:一种可用于制造轮胎的橡胶组合物,其基于至少一种二烯弹性体,一种增强无机填料和提供无机填料和弹性体之间的键的偶联剂。 无机填料包括具有下式的合成硅铝酸盐:<?in-line-formula description =“In-line Formulas”end =“lead”?> M x SiAl sub (OH)b,(H 2 O)C(I)<?line line line line line line line line line line line line line line line line line line line line line line line line -formulae description =“In-line Formulas”end =“tail”?>其中:M是选自K +,+, - , - > ++ SUP>和这些阳离子的混合物; x> 0; y> 0; a> = 0; b> = 0,c> = 0和a + b> 0,并且具有以下特性:(a)20和300m 2 / g之间的BET比表面积; (b)20〜400nm的平均粒径(d×W); 和(c)大于5×10 -4 mum-1 / min的超声解聚速率(α)。
Abstract:
A rubber composition usable for the manufacture of tires, based on at least one diene elastomer, at least one reinforcing inorganic filler and at least one coupling agent providing a bond between the inorganic filler and the elastomer. The reinforcing inorganic filler includes a silicon nitride having the following characteristics: (a) a BET specific surface area of between 20 and 200 m2/g; (b) an average particle size (by mass), dw, of between 10 and 350 nm. The rubber composition may be used for the manufacture of rubber articles, in particular of tires or semi-finished products made of rubber intended for tires, in particular of treads.
Abstract translation:一种可用于制造轮胎的橡胶组合物,其基于至少一种二烯弹性体,至少一种增强无机填料和至少一种在无机填料和弹性体之间提供粘结的偶联剂。 增强无机填料包括具有以下特性的氮化硅:(a)BET比表面积在20和200m 2 / g之间; (b)10〜350nm的平均粒径(质量百分比)d w w。 橡胶组合物可以用于制造橡胶制品,特别是用于轮胎的轮胎或半成品,特别是用于轮胎的橡胶,特别是胎面。
Abstract:
The invention provides a process for preparing a modified carbon black with an adhering layer of aluminum oxide and/or hydroxide. This process involves (a) impregnating a starting carbon black with a colloidal suspension formed by hydrolysis of a solution of aluminum alkoxide in an alcoholic solvent, (b) removing the alcoholic solvent by evaporation, and (c) heat-treating the black thus impregnated so as to transform the aluminuous layer present at its surface into an adhering layer of aluminum oxide and/or hydroxide. The modified carbon black prepared by the process is also provided.
Abstract:
The invention provides rubber composition usable for the manufacture of tires, comprising at least (i) one diene elastomer, (ii) one white filler as reinforcing filler and (iii) one coupling agent (white filler/elastomer), the white filler comprising a titanium oxide having the following characteristics: (a) its specific BET surface area is between 20 and 200 m2/g; (b) its average particle size (by mass), dw, is between 20 and 400 nm; and (c) its disagglomeration rate, &agr;, measured by the ultrasound disagglomeration test, at 100% power of a 600-watt ultrasonic probe, is greater than 2×102 &mgr;m1/s. The invention also provides for the use of a rubber composition according to the invention for the manufacture of rubber articles, in particular tires or semi-finished rubber products intended for these tires. The composition of the invention is particularly useful for the manufacture of colored tires or colored semi-finished articles such as tire treads or sidewalls.
Abstract:
A reinforcing aluminum-based filler which can be used for reinforcing diene rubber compositions intended for the manufacture of tires, comprising an aluminum (oxide-)hydroxide corresponding, with the exception of any impurities and the water of hydration, to the general formula (a and b being real numbers): Al(OH)aOb, with 0
Abstract:
A rubber composition usable for the manufacture of tires, based on at least one diene elastomer, a reinforcing inorganic filler and a coupling agent providing the bond between the inorganic filler and the elastomer, wherein said inorganic filler comprises a silicon carbide having the following characteristics: (a) a BET specific surface area of between 20 and 200 m2/g; (b) an average particle size (by mass), dW, of between 10 and 350 nm. Tires or semi-finished products for tires such as treads comprising said rubber composition.