US 12,486,469 B2
Lubricant composition for brake system
Kang Won Seo, Yongin-si (KR); Choong Sik Shin, Yongin-si (KR); Hyun Chul Kim, Yongin-si (KR); Yeon Chan Koo, Seoul (KR); Im Gee Baek, Asan-si (KR); Hyun Woong Lee, Asan-si (KR); and Han Eum Park, Incheon (KR)
Assigned to HYUNDAI MOBIS CO., LTD., Seoul (KR)
Filed by HYUNDAI MOBIS CO., LTD., Seoul (KR)
Filed on Jan. 15, 2025, as Appl. No. 19/022,318.
Claims priority of application No. 10-2024-0045236 (KR), filed on Apr. 3, 2024.
Prior Publication US 2025/0313773 A1, Oct. 9, 2025
Int. Cl. C10M 107/34 (2006.01); C10M 125/02 (2006.01); C10M 133/12 (2006.01); C10M 137/08 (2006.01); C10N 20/02 (2006.01); C10N 20/06 (2006.01); C10N 30/06 (2006.01); C10N 30/08 (2006.01); C10N 30/10 (2006.01); C10N 40/08 (2006.01)
CPC C10M 133/12 (2013.01) [C10M 107/34 (2013.01); C10M 125/02 (2013.01); C10M 137/08 (2013.01); C10N 2020/02 (2013.01); C10N 2020/06 (2013.01); C10N 2030/06 (2013.01); C10N 2030/08 (2013.01); C10N 2030/10 (2013.01); C10N 2040/08 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A lubricant composition comprising, based on a total weight of the lubricant composition:
85 wt % to 95 wt % of a polyalkylene glycol base oil;
1 wt % to 5 wt % of an antioxidant;
1 wt % to 5 wt % of a first anti-wear extreme-pressure additive; and
1 wt % to 5 wt % of a second anti-wear extreme-pressure additive,
wherein the antioxidant comprises an amine-based compound,
the first anti-wear extreme-pressure additive comprises an amine salt of phosphate, and
the second anti-wear extreme-pressure additive comprises a nano-diamond dispersion.