Rubber composition and method for producing rubber composition
AssigneeToyo Tire Corporation
InventorYuki Komiya
Life of this patent
Estimating the term…
Abstract
A rubber composition comprises at least a rubber ingredient, carbon black and a compound described in formula (I) below. In the formula (I), R1 and R2 represent a hydrogen atom, and an alkyl group, an alkenyl group or an alkynyl group having a carbon number of 1 to 20, and R1 and R2 may be the same or different; M+ represents a sodium ion, a potassium ion or a lithium ion. The rubber composition contains carbon black having a surface activity ((N2SA)/(IA)) of at least 1.0 or more as the carbon black.
Claims8
A rubber composition comprising at least a rubber ingredient, carbon black and a compound described in formula (I) below:
- in the formula (I), R1 and R2 represent a hydrogen atom, and an alkyl group, an alkenyl group or an alkynyl group having a carbon number of 1 to 20, and R1 and R2 may be the same or different;
- M+ represents a sodium ion, a potassium ion or a lithium ion,
- wherein the rubber composition contains carbon black having a surface activity ((N2SA)/(IA)) of at least 1.0 or more as the carbon black.
A method for producing a rubber composition, comprising:
- a first mixing step of mixing at least a rubber ingredient, carbon black and a compound described in formula (I) below:
- in the formula (I), R1 and R2 represent a hydrogen atom, and an alkyl group, an alkenyl group or an alkynyl group having a carbon number of 1 to 20, and R1 and R2 may be the same or different;
- M+ represents a sodium ion, a potassium ion or a lithium ion, and
- a second mixing step of further mixing at least a wax after the first mixing step,
- wherein a blending amount of the compound described in the formula (I) is 0.1 parts by mass or more and 0.75 parts by mass or less based on 100 parts by mass of a total amount of the rubber ingredient.
Dependencies are inferred from the claim text.