| abstract |
A wheel balancing composition, having a storage coefficient between 3000 and 15000 Pa and a density less than 1000 kg / m3 in a temperature range between -20 and + 90 ° C, the storage coefficient being preferably around 9000 Pa, allows balancing of the wheels insofar as it can flow under the vibrations caused by an imbalance in a wheel assembly. The composition preferably comprises a mixture of: 1) crude petroleum, polybutene oils, polyol esters or polyol ethers; 2) hydrophobic or hydrophilic smoked silica; 3) poly-alkyl-methacrylates, block copolymers of styrene-ethylene-propylene or derivatives of polyhydroxycarboxylic acid; and, optionally, corrosion inhibitors and antioxidants. |