Hydrogenated polymers and rubber compositions incorporating the same
OwnerYoshihiko Kanatomi, Jeffrey M. Magistrelli +2inventors
InventorsYoshihiko Kanatomi, Jeffrey M. Magistrelli, Ryan J. Hue, Yuan Liu
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Abstract
Embodiments of the present disclosure are directed to functional polymers produced by copolymerization of at least one conjugated diolefin monomer and optionally one or more vinyl monomer, the functional polymer comprising at least one functional group having silica reactive moieties, wherein the functional copolymer has a degree of hydrogenation of from 40% to 98 mol % and a vinyl content of about 50% or less.
Claims22
A polymer comprising:
- a functional polymer produced by polymerization of at least one conjugated diolefin monomer and optionally one or more aromatic vinyl monomers, the functional polymer comprising at least one functional group having silica reactive moieties,
- wherein the functional polymer has a degree of hydrogenation of 40% to 98 mol % as measured using proton nuclear magnetic resonance spectroscopy (1H NMR);
- and
- wherein the functional polymer has a vinyl content of from about 15% to about 50%;
- and
- wherein an Mn of the functional polymer is from about 100,000 to about 700,000 grams/mole;
- and
- wherein a Tg of the functional polymer is from about −100° C. to −40° C.
A rubber composition comprising:
- (a) 100 phr of an elastomer component comprising a hydrogenated functional polymer produced by polymerization of at least one conjugated diolefin monomer and optionally one or more aromatic vinyl monomers, the functional polymer comprising at least one functional group having silica reactive moieties, and wherein the functional polymer has a degree of hydrogenation of 40% to 98 mol % as measured using proton nuclear magnetic resonance spectroscopy (1H NMR);
- a vinyl content of from about 15% to about 50%;
- an Mn of from about 100,000 to about 700,000 grams/mole;
- and a Tg of from about −100° C. to −40° C.;
- (b) silica reinforcing filler;
- and
- (c) a cure package.
A method of making a hydrogenated functional polymer comprising:
- introducing an anionic polymerization initiator, at least one conjugated diolefin monomer, and optionally one or more vinyl monomer, and solvent to a reactor to produce a living polymer via anionic polymerization;
- reacting at least one functional group comprising silica reactive moieties with the living polymer to produce a functional polymer;
- and
- hydrogenating the functional polymer by mixing the functional polymer with solvent and a hydrogenation catalyst in a hydrogen stream, wherein the hydrogenated functional polymer has a degree of hydrogenation of 40% to 98 mol % as measured using 1H NMR;
- a vinyl content of from about 15% to about 50%;
- an Mn of from about 100,000 to about 700,000 grams/mole;
- and a Tg of from about −100° C. to −40° C.
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Dependencies are inferred from the claim text.