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US 12,305,025 B2Granted
Polymer composition, cross-linked product, and tire
AssigneeENEOS Materials Corporation
InventorRikimaru Kuwabara
Life of this patent
Estimating the term…
Abstract
This polymer composition includes: a modified conjugated diene-based polymer having at least one nitrogen-containing functional group selected from the group consisting of a primary amino group, a secondary amino group, a tertiary amino group, a primary amino group having been protected or converted into an onium group, a secondary amino group having been protected or converted into an onium group, and a tertiary amino group having been converted into an onium group; and a functional-group-containing polymer having at least one functional group selected from the group consisting of an epoxy group, an acid anhydride structure, an oxazoline group, a hydroxyl group, a carboxyl group, and a sulfo group.
Claims8
A polymer composition, comprising:
- a modified conjugated diene-based polymer having at least one nitrogen-containing functional group selected from the group consisting of a primary amino group, a secondary amino group, a tertiary amino group, a primary amino group having been protected or converted into an onium group, a secondary amino group having been protected or converted into an onium group, and a tertiary amino group having been converted into an onium group;
- a functional-group-containing polymer having at least one functional group selected from the group consisting of an epoxy group, an oxazoline group, a hydroxyl group, and a sulfo group;
- and
- at least one reinforcing filler selected from the group consisting of silica, carbon black, and an inorganic compound of formula (1), nM1·mSiOk·iH2O, where M1 is at least one species selected from the group consisting of aluminum, magnesium, titanium, calcium, an oxide thereof, a hydroxide thereof, a hydrate of the oxide, and a hydrate of the hydroxide, n is an integer in a range of from 1 to 5, m is an integer in a range of from 0 to 10, k is an integer in a range of from 2 to 5, and i is an integer in a range of from 0 to 10,
- wherein the modified conjugated diene-based polymer is a random copolymer of a conjugated diene compound and a vinyl aromatic compound, the modified conjugated diene-based polymer has a weight average molecular weight in a range of from 1.0×105 to 1.5×106 and a glass transition point in a range of from −100° C. to 0° C., the functional-group-containing polymer has a weight average molecular weight of 1.0×104 or more, and a melting point and/or glass transition point of the functional-group-containing polymer in a range of from 70° C. to 150° C., and an amount of the functional-group-containing polymer is 2 to 12 mass % relative to the entire amount of the composition.
2 more elements
A method for producing a polymer composition, comprising:
- mixing a modified conjugated diene-based polymer (A) and functional-group-containing polymer (B) with a reinforcing filler (C),
- wherein the reinforcing filler selected from the group consisting of silica, carbon black, and an inorganic compound of formula (1), nM1·mSiOk·iH2O, where M1 is at least one species selected from the group consisting of aluminum, magnesium, titanium, calcium, an oxide thereof, a hydroxide thereof, a hydrate of the metal oxide, and a hydrate of the hydroxide, n is an integer in a range of from 1 to 5, m is an integer in a range of from 0 to 10, k is an integer in a range of from 2 to 5, and i is an integer in a range of from 0 to 10, the modified conjugated diene-based polymer (A) has at least one nitrogen-containing functional group selected from the group consisting of a primary amino group, a secondary amino group, a tertiary amino group, a primary amino group having been protected or converted into an onium group, a secondary amino group having been protected or converted into an onium group, and a tertiary amino group having been converted into an onium group, the functional-group-containing polymer (B) has at least one functional group selected from the group consisting of an epoxy group, an oxazoline group, a hydroxyl group, and a sulfo group, the modified conjugated diene-based polymer is a random copolymer of a conjugated diene compound and a vinyl aromatic compound, the modified conjugated diene-based polymer has a weight average molecular weight in a range of from 1.0×105 to 1.5×106 and a glass transition point in a range of from −100° C. to 0° C., the functional-group-containing polymer has a weight average molecular weight of 1.0×104 or more, and a melting point and/or glass transition point of the functional-group-containing polymer in a range of from 70° C. to 150° C., and an amount of the functional-group-containing polymer (B) is 2 to 12 mass % relative to the entire amount of the composition.
Dependencies are inferred from the claim text.