Invention Grant
US07662330B2 Use of desiccant material in rubber compounds for reducing the cure time of tires 失效
在橡胶混合物中使用干燥剂材料以减少轮胎的固化时间

Use of desiccant material in rubber compounds for reducing the cure time of tires
Abstract:
The present invention is directed towards the use of low levels of a desiccant material in a rubber compound, such as for use as a tire tread, that allows for reduced cure times of tires cured under pressure, thereby increasing tire production. The low level of desiccant material reduces the blow point of the rubber compound by substantially eliminating blows earlier in the pressure curing process, thereby allowing for the reduced cure time of the tire under pressure. In one embodiment, low levels of no greater than about 9 phr of desiccant material, which may include generally a metal oxide (e.g. calcium oxide or magnesium oxide), are provided in the rubber compound. The rubber compound including the low levels of desiccant material may be cured, under pressure, at less than 30% of full cure of the rubber compound.
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