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US 2023/0134110 A1Published application
High Strength Hydrogenated Polymers, And Rubber Compositions Incorporating Same
AssigneeBridgestone Corporation
InventorsMichael R. Beaulieu, Noriaki Yukimura, Zengquan Qin
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Abstract
Embodiments of the present disclosure are directed to functionalized copolymers produced by copolymerization of at least one conjugated diolefin monomer and at least one vinyl monomer, the functionalized copolymer comprising at least one functional group having silica reactive moieties, wherein the functionalized copolymer has a degree of hydrogenation of 75% to 98 mol % as measured using proton nuclear magnetic resonance spectroscopy (1H NMR).
Claims15
A polymer comprising:
- a functionalized copolymer produced by copolymerization of at least one conjugated diolefin monomer and at least one vinyl monomer, the functionalized copolymer comprising at least one alkoxysilyl functional group, the alkoxylsilyl functional group being selected from the group consisting of alkoxysilane compounds, aralkyloxysilane compounds, tetraalkoxysilane compounds, alkylalkoxysilane compounds, alkenylalkoxysilane compounds, halogenoalkoxysilane compounds,
- wherein the functionalized copolymer has a degree of hydrogenation of 75% to 98 mol % as measured using proton nuclear magnetic resonance spectroscopy (1H NMR).
A method of making a hydrogenated functionalized copolymer comprising:
- introducing an anionic polymerization initiator, at least one conjugated diolefin monomer, at least one vinyl monomer, and solvent to a reactor to produce a living copolymer via anionic polymerization;
- reacting at least one alkoxysilyl functional group with the living copolymer to produce a functionalized copolymer, wherein the alkoxylsilyl functional group is selected from the group consisting of alkoxysilane compounds, aralkyloxysilane compounds, tetraalkoxysilane compounds, alkylalkoxysilane compounds, alkenylalkoxysilane compounds, halogenoalkoxysilane compounds;
- and
- hydrogenating the functionalized copolymer by mixing the functionalized copolymer with solvent and a hydrogenation catalyst in a hydrogen stream, wherein the hydrogenated functionalized copolymer has a degree of hydrogenation of 75% to 98 mol % as measured using 1H NMR.
1 more element
Dependencies are inferred from the claim text.