Additive for lubricants
AssigneeKanto Denka Kogyo Co., Ltd.
InventorsKazuto Yoshinari, Yuki Goto, Yukinari Oguma, Hidehiko Iinuma
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Abstract
An additive for lubricants containing, a ZrO2 particle coated with a silane coupling agent, and a dispersion medium for the ZrO2 particle, wherein a BET specific surface area of the ZrO2 particle coated with the silane coupling agent obtained by removing the dispersion medium is 40% or more of a BET specific surface area of the ZrO2 particle before coating with the silane coupling agent.
Claims9
An additive for lubricants comprising, a ZrO2 particle coated with a silane coupling agent, and a dispersion medium for the ZrO2 particle, wherein a BET specific surface area of the ZrO2 particle coated with the silane coupling agent obtained by removing the dispersion medium is 40% or more of a BET specific surface area of the ZrO2 particle before coating with the silane coupling agent.
A method for producing an additive for lubricants containing a ZrO2 particle coated with a silane coupling agent, comprising:
- mixing a ZrO2 particle with a dispersion medium for the ZrO2 particle;
- and
- reacting the ZrO2 particle with a silane coupling agent in the obtained mixture until a BET specific surface area of the ZrO2 particle coated with the silane coupling agent obtained by removing the dispersion medium from the mixture after the reaction of the ZrO2 particle with the silane coupling agent reaches 40% or more of a BET specific surface area of the ZrO2 particle before coating with the silane coupling agent.
Dependencies are inferred from the claim text.