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1. (WO2018203542) GREASE COMPOSITION

Pub. No.:    WO/2018/203542    International Application No.:    PCT/JP2018/017341
Publication Date: Fri Nov 09 00:59:59 CET 2018 International Filing Date: Sat Apr 28 01:59:59 CEST 2018
IPC: C10M 169/02
C10M 105/32
C10M 105/38
C10M 115/08
C10N 20/00
C10N 20/02
C10N 30/00
C10N 30/06
C10N 40/02
C10N 50/10
Applicants: IDEMITSU KOSAN CO.,LTD.
出光興産株式会社
Inventors: SEKIGUCHI, Hiroki
関口 浩紀
WATANABE, Go
渡邊 剛
Title: GREASE COMPOSITION
Abstract:
A grease composition comprising a base oil (A) including an ester oil (A1), and an aliphatic diurea (B) represented by general formula (b1), R1–NHCONH–R3–NHCONH–R2 (b1) (where R1 and R2 each independently represent a C8-20 monovalent aliphatic hydrocarbon group, and R3 represents a C6 to 18 bivalent aromatic hydrocarbon group) wherein, in said grease composition, the kinematic viscosity at 40°C of the base oil (A) is 10 mm2/s to no more than 45 mm2/s, the ester oil (A1) content is 50 mass% or more relative to the total weight of the base oil (A), the aliphatic diurea (B) content is 20 to 30 mass% relative to the total weight of the grease composition, and the worked penetration at 25°C is greater than 300.