Method of producing a rubber mix with large-area reinforcing fillers
AssigneeBridgestone Corporation
InventorsSalvatore Cotugno, Enrico Carone
Life of this patent
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Abstract
A method of producing rubber mixes, including a step of mixing a reinforcing filler, having a surface area of over 220 m2/g and a particle size of less than 0.1 μm, with a cross-linkable, unsaturated-chain polymer base. The mixing step is performed in the aqueous phase, in the presence of a surface-active agent of molecular formula (I) (R1CONR2CHR3COO−)nXn+ (I) where: R1 is an aliphatic group C4-C20 R2 is H or an aliphatic group C1-C8 R3 is H or an aliphatic or aromatic group C1-C8 X is a metal cation n is an integer of 1 to 3.
Claims11
1-11. (canceled)
A method of producing rubber mixes, comprising a step of mixing a reinforcing filler with a cross-linkable, unsaturated-chain polymer base;
- said method being characterized in that said mixing step is performed in the aqueous phase, and said reinforcing filler has a surface area of over 220 m2/g, and a particle size of less than 0.1 μm;
- said aqueous phase comprising curing agents and a surface-active agent of molecular formula (I)
- (R1CONR2CHR3COO−)n Xn+
- where:
- R1 is an aliphatic group C4-C20
- R2 is H or an aliphatic group C1-C8
- R3 is H or an aliphatic or aromatic group C1-C8
- X is a metal cation
- n is an integer of 1 to 3.
Dependencies are inferred from the claim text.