Coating agent for oil seal
AssigneeNok Corporation
InventorNatsumi Yasunaga
Life of this patent
Estimating the term…
Abstract
A coating agent for oil seal comprising 10 to 90 parts by weight in total of fluororesin particles having a particle size of 2 μm or less and filler particles other than fluororesin particles having a particle size of 0.5 to 30 μm, and 10 to 40 parts by weight of a wax having a melting point of 40 to 160° C., based on 100 parts by weight of isocyanate group-containing 1,2-polybutadiene, and being prepared as an organic solvent solution, wherein the fluororesin particles are used at a ratio of 20 to 80 wt. % of the total filler amount. The coating agent for oil seal can improve abrasion resistance while maintaining the roughness of a coating surface to which the coating agent is applied.
Claims5
A coating agent for oil seal comprising
- polytetrafluoroethylene particles,
- polymethylsilsesquioxane or silicon dioxide particles,
- a paraffin wax, and
- isocyanate group-containing 1,2-polybutadiene, and
- being prepared as an organic solvent solution, characterized by comprising
- 60 to 80 parts by weight in total of polytetrafluoroethylene particles having a particle size of 0.5 μm or less and polymethylsilsesquioxane or silicon dioxide particles having a particle size of 3 to 7 μm, and
- 10 to 30 parts by weight of the paraffin wax, based on 100 parts by weight of the isocyanate group-containing 1,2-polybutadiene,
- wherein the polytetrafluoroethylene particles are used at a ratio of 30 to 70 wt. % of the total amount of the polytetrafluoroethylene particles, polymethylsilsesquioxane, and silicon dioxide particles.
Dependencies are inferred from the claim text.