Cord rubberized in situ comprising a composition comprising a styrene-butadiene copolymer
AssigneesCompagnie Generale Des Etablissements Michelin, Michelin Recherche et Technique S.A.
InventorNathalie Salgues
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Abstract
A metal cord is rubberized in situ by a rubber composition that includes a styrene-butadiene copolymer. The styrene-butadiene copolymer includes styrene units at a proportion of between 25% and 35% by weight, limits included, of a total weight of the styrene-butadiene copolymer. The styrene-butadiene copolymer also includes trans-1,4-bonds at a proportion of between 73% and 83% by weight, limits included, of a total weight of a butadiene part of the styrene-butadiene copolymer.
Claims12
A metal cord comprising a rubber composition used to rubberize the metal cord in situ, wherein the rubber composition includes a styrene-butadiene copolymer, and wherein the styrene-butadiene copolymer includes:
- styrene units at a proportion of between 27% and 31% by weight, limits included, of a total weight of the styrene-butadiene copolymer, and
- trans-1,4-bonds at a proportion of between 73% and 83% by weight, limits included, of a total weight of a butadiene part of the styrene-butadiene copolymer.
A process for manufacturing a metal cord that is rubberized in situ, the process comprising steps of:
- manufacturing a rubber composition that includes a styrene-butadiene copolymer, wherein the styrene-butadiene copolymer includes:
- styrene units at a proportion of between 27% and 31% by weight, limits included, of a total weight of the styrene-butadiene copolymer, and
- trans-1,4-bonds at a proportion of between 73% and 83% by weight, limits included, of a total weight of a butadiene part of the styrene-butadiene copolymer;
- and
- between two stages of assembling the metal cord, sheathing at least an internal portion of the metal cord with the rubber composition.
Dependencies are inferred from the claim text.