Polymer composition, cross-linked product and tire
AssigneeENEOS Materials Corporation
InventorMasaaki INOUE
Life of this patent
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Abstract
A polymer composition includes a polymer (A) having, when composition ratios (molar ratios) of a structural unit represented by formula (1), a structural unit represented by formula (2), a structural unit represented by formula (3), and a structural unit represented by formula (4) in the polymer (A) are p, q, r, and s, respectively, a value α represented by formula (i) of 0.60 or more: with a weight average molecular weight (Mw) of 1.0×105 to 2.0×106 in terms of polystyrene measured by gel permeation chromatography, and a carbon-carbon unsaturated bond; and a paraffin wax (B) having a melting point of 70° C. or more.
Claims9
1-8. (canceled)
A polymer composition comprising:
- a paraffin wax (B) having a melting point of 75° C. or more;
- and
- a polymer (A), which is a random copolymer and having a value α represented by formula (i) of 0.60 or more:
- α=(p+(0.5×r))/(p+q+(0.5×r)+s) (i)
- wherein p is a molar composition ratio of a structural unit of formula (1)
- in the polymer (A),
- q is a molar composition ratio of a structural unit of formula (2)
- in the polymer (A),
- r is a molar composition ratio of a structural unit of formula (3)
- —CH2—CH2— (3),
- in the polymer (A), and
- s is a molar composition ratio of a structural unit of formula (4)
- —CH2—CH═CH—CH2— (4),
- in the polymer (A),
- wherein the polymer (A) has a weight average molecular weight (Mw) of 1.0×105 to 2.0×106 in terms of polystyrene measured by gel permeation chromatography, and
- wherein the polymer (A) comprises a carbon-carbon unsaturated bond.
Dependencies are inferred from the claim text.