润滑科技信息平台

机械工程学会摩擦学分会固体润滑国家重点实验室摩擦学学报

高性能润滑脂组合物

专利摘要

本发明涉及在不使用硼酸和醇促进剂的情况下制备的含有抗磨、减摩、热稳定性和氧化稳定性添加剂的高碱性磺酸钙复合润滑脂组合物。 ......

基本信息

专利类型:
发明专利
申请/专利号:
AU2023219298
申请日期:
2023-02-09
专利申请人:
分类号:
["C10M121/04","C10N20/06","C10N30/00","C10N30/06","C10N30/10","C10N50/10","C10N70/00"]
发明/设计人:
KUMAR, ANOOP
权利要求: 1. A method for making a high performance overbased calcium sulfonate complex grease composition prepared without boric acid and without the use of any alcohol-based promotors comprising reacting and mixing (a) a primary overbasing material comprising overbased oil-soluble calcium sulfonate having amorphous calcium carbonate dispersed therein; (b) a suitable base oil of an amount appropriate to provide a final acceptable product consistency; (c) in the presence of a functionalized polymer, a stoichiometric excess of finely divided calcium carbonate as an oil-insoluble solid calcium-containing base added to the primary overbasing material and base oil before conversion; and (d) a doping agent in the form of an extreme-pressure, anti-wear, antioxidant, metal deactivator or polymeric additive, or combination thereof.2. The method of claim 1, further comprising the addition of a carboxylic acid between steps (c) and (d) selected from the group consisting of a long chain and short chain carboxylic acid.3. The method of claim 2 wherein the amount of overbased oil-soluble calcium sulfonate is between 10 and 35%.4. The method of claim 3, wherein the amount of the overbased oil-soluble calcium sulfonate is between 18 and 25%.5. The method of claim 4, wherein the total amount of base oil added is between 25% and 80%.6. The method of claim 5, wherein the total amount of base oil added is between 35% and 75%.7. The method of claim 6, wherein the total amount of base oil added is between 40% and 70%.8. The method of claim 5, wherein the amount of long chain carboxylic acid isbetween 1% and 6%.5 9. The method of claim 8, wherein the amount of long chain carboxylic acid isbetween 2.0% and 3.5%.10. The method of claim 8, wherein the amount of doping agent is between 0.5 -15 %.1011.The method of claim 10, wherein the amount of doping agent is between 5 -12%.12. The composition of claim 10 wherein the resulting grease compositioncontains an insoluble portion of crystalline capsule morphology.1513. The composition of claim 13, wherein the crystalline capsule morphology has a length of about 16.4 +/-6.4 nm and a width of about 5.7 +/- 1.3 nm.