Patent ID: 9273265
Filing Date: 2016-03-01
CPC Classification: C10M,C10N,D07B

Claim Text:
1. A calcium sulfonate complex grease composition comprising the following ingredients: around 10% to 36% overbased oil-soluble calcium sulfonate containing 28% to 36% dispersed calcium carbonate and 0% to 8% residual calcium oxide or calcium hydroxide; 2% to 20% crystalline calcium carbonate added in addition to the amount of dispersed calcium carbonate contained in the overbased oil-soluble calcium sulfonate; wherein the calcium sulfonate complex grease has a worked 60 stroke penetration between 220 and 295 and a dropping point of 575 F or higher; wherein the amount of dispersed calcium carbonate and residual calcium oxide or calcium hydroxide are by weight of the overbased oil-soluble calcium sulfonate and all other amounts are by weight of the final complex grease; and wherein no calcium oxide or calcium hydroxide is added in addition to the amount of residual calcium oxide or calcium hydroxide contained in the overbased oil-soluble calcium sulfonate.