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US 11,008,443 B2Granted
Latex and friction material
AssigneeZeon Corporation
InventorSayaka Inoue
Life of this patent
Estimating the term…
Abstract
A latex of a carboxyl group-containing nitrile rubber contains an α,β-ethylenically unsaturated nitrile monomer unit in a content of 8 to 60 wt % and having an iodine value of 120 or less, wherein the total content of potassium and sodium contained in the latex is 2,300 to 10,000 ppm by weight with respect to the whole latex.
Claims6
A latex of a carboxyl group-containing nitrile rubber containing an α,β-ethylenically unsaturated nitrile monomer unit in a content of 8 to 60 wt %, and having an iodine value of 120 or less,
- wherein the total content of potassium and sodium contained in the latex is 2,300 to 10,000 ppm by weight with respect to the whole latex, and
- wherein the total content of potassium and sodium is 4,500 to 33,000 ppm by weight with respect to the carboxyl group-containing nitrile rubber.
Dependencies are inferred from the claim text.