Use of desiccant material in rubber compounds for reducing...

Details Use of desiccant material in rubber compounds for reducing... Use of desiccant material in rubber compounds for reducing...

2005-09-30

2010-02-16

Mulcahy, Peter D (Department: 1796)

Plastic and nonmetallic article shaping or treating: processes

Mechanical shaping or molding to form or reform shaped article

Shaping against forming surface

C264S319000, C264S331110, C264S331130, C524S433000, C425S029000

Reexamination Certificate

active

07662330

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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European Search Report, European Patent Application No. 06121156.1, mailed Jan. 15, 2007, 6 pages.

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