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US 2011/0237729 A1Published application
Rubber Composition Having Improved Crack Resistance
AssigneeBridgestone Corporation
InventorsZhong-Ren Chen, Steven Luo
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Abstract
A method includes: (a) mixing in a first step a first polymer and a filler, (b) mixing in a second step a second polymer and a polyhydroxy compound, and (c) mixing in a third mixing step the mixtures resulting from steps (a) and (b) and optionally additional filler, wherein said first polymer and second polymer may be the same polymer or different polymers, and wherein steps (a) and (b) can occur simultaneously or consecutively.
Claims20
A method comprising,
- a. mixing in a first step:
- i. a first polymer,
- ii. a filler,
- b. mixing in a second step:
- i. a second polymer,
- ii. a polyhydroxy compound,
- c. mixing in a third step:
- i. the mixtures obtained in steps (a) and (b),
- ii. optionally, additional filler,
- wherein said first polymer and second polymer may be the same or different, and
- wherein steps (a) and (b) can occur simultaneously or consecutively.
8 more elements
Dependencies are inferred from the claim text.