The invention provides a rubber composition with good color fastness for colored tire sidewalls. The rubber composition comprises the following materials in parts by weight: 100 parts of matrix rubber, 30-40 parts of an active filler, 20-30 parts of a coloring filler, 5-7 parts of paraffin oil, 5-7 parts of an activator, 2-3 parts of a silane coupling agent, 1-2 parts of light-color tackifying resin, 4-6 parts of a non-staining antioxidant, 1-12 parts of a vulcanizer, 3-5 parts of a promoter, 3-6 parts of an organic coloring agent and 1-2 parts of an ultraviolet light absorber. A sidewall prepared from the rubber composition has a bright color and relatively good color fastness; and a tire with a dark-color sidewall is free from discoloring within one year under strong sunlight illumination or in a damp and hot environment, and even a tire with a light-color sidewall is free from obvious discoloring within three months under strong sunlight illumination or in a damp and hot environment. The sidewall prepared from the composition has higher tearing resistance, approximate flexing resistance and aging resistance than a black sidewall. Compared with a general colored sidewall, the sidewall prepared from the composition maintains extremely good color fastness under severe working conditions of strong sunlight illumination, dampness and heat.
Rubber composition with good color fastness for colored tire sidewalls
2015-04-22
Patent
Electronic Resource
English
IPC: | C08L COMPOSITIONS OF MACROMOLECULAR COMPOUNDS , Massen auf Basis makromolekularer Verbindungen / B60C VEHICLE TYRES , Fahrzeugreifen / C08K Verwendung von anorganischen oder nichtmakromolekularen organischen Stoffen als Zusatzstoffe , USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES AS COMPOUNDING INGREDIENTS |
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