Uses of biobased styrene
AssigneeBridgestone Corporation
InventorTerrence E. Hogan
Life of this patent
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Abstract
Disclosed herein various uses of styrene monomers derived from biobased material and containing modern carbon atoms, including in copolymers, in rubber compositions, in tire components, and to balance the viscoelastic properties of a rubber composition containing the styrene monomer.
Claims22
A method for increasing the wet traction of a rubber composition, the method comprising incorporating 5-100 phr of at least one polymer or copolymer containing a styrene monomer with 50% to 100% modern carbon atoms into the rubber composition, wherein either:
- a. wet traction is increased by about 10% or more while maintaining or decreasing rolling resistance as compared to a control rubber composition that replaces the modern carbon-containing polymer or copolymer with a polymer or copolymer containing no modern carbon atoms;
- or
- b. wet traction is increased by more than 50% and rolling resistance is increased by less than 50% as compared to a control rubber composition that replaces the modern carbon-containing polymer or copolymer with a polymer or copolymer containing no modern carbon atoms.
A method for increasing the wet traction of a rubber composition, the method comprising incorporating:
- a. 5-100 phr of at least one polymer or copolymer containing a styrene monomer with 50% to 100% modern carbon atoms;
- b. 0-95 phr of at least one additional polymer or copolymer selected from the group consisting of polyisoprene, polybutadiene, emulsion styrene-butadiene copolymer, solution styrene-butadiene copolymer, natural rubber, and combinations thereof;
- and
- c. 5-200 phr of at least one reinforcing filler
- to form the rubber composition,
- wherein either:
- d. wet traction is increased by about 10% or more while maintaining or decreasing rolling resistance as compared to a control rubber composition that replaces the modern carbon-containing polymer or copolymer with a polymer or copolymer containing no modern carbon atoms;
- or
- e. wet traction is increased by more than 50% and rolling resistance is increased by less than 50% as compared to a control rubber composition that replaces the modern carbon-containing polymer or copolymer with a polymer or copolymer containing no modern carbon atoms.
A rubber composition having increased wet traction comprising
- a. 5-100 phr of at least one polymer or copolymer containing a styrene monomer with 50% to 100% modern carbon atoms,
- b. 0 to 95 phr of at least one additional polymer or copolymer selected from the group consisting of polyisoprene, polybutadiene, emulsion styrene-butadiene copolymer, solution styrene-butadiene copolymer, natural rubber, and combinations thereof;
- and
- c. 5 to 200 phr of at least one reinforcing filler,
- wherein the increased wet traction comprises either:
- d. increasing wet traction by about 10% or more while maintaining or decreasing rolling resistance as compared to a control rubber composition that replaces the modern carbon-containing polymer or copolymer with a polymer or copolymer containing no modern carbon atoms;
- or
- e. increasing wet traction by more than 50% and increasing rolling resistance by less than 50% as compared to a control rubber composition that replaces the modern carbon-containing polymer or copolymer with a polymer or copolymer containing no modern carbon atoms.
Dependencies are inferred from the claim text.