润滑科技信息平台

专利摘要

[0001] 本发明涉及一种混合复合皂基润滑脂组合物,其包含润滑基础油; 可皂化材料; 金属氧化物; 碱金属/碱金属氢氧化物; 和络合酸。本发明还公开了一种单步、开釜、节能方法,其产生具有相对低增稠剂含量同时仍保持期望的稠度的光滑纹理的锌-碱/碱土金属混合复合润滑脂组合物。锌-碱/碱土金属混合复合润滑脂组合物经过定制,滴点在180℃至300℃范围内,与锂和锂复合润滑脂组合物相当,具有固有的氧化安定性、极压、抗腐蚀性能。 -耐磨性能和防水性能。锌-碱/碱土金属混合复合润滑脂组合物表现出优异的添加剂响应、良好的机械稳定性、低温性能、泵送性和耐腐蚀性。 ......

基本信息

专利类型:
发明专利
申请/专利号:
US18/391591
申请日期:
2023-12-20
专利申请人:
分类号:
["C10M169/00","C10M105/04","C10M125/10","C10M129/42","C10M129/44","C10M141/12","C10M177/00","C10N10/02","C10N10/04","C10N30/06","C10N30/12","C10N70/00"]
发明/设计人:
VENNAMPALLI, MANOHAR ， BHUIN, RADHA GOBINDA ， KUMAR, VIRENDER ， POKHRIYAL, NAVEEN KUMAR ， HARINARAIN, AJAY KUMAR ， RAMAKUMAR, SANKARA SRI VENKATA
权利要求: 1. A zinc-alkali/alkaline earth metal mixed complex grease composition, comprising:i) a base oil;ii) a saponifiable material;iii) zinc oxide or zinc hydroxide;iv) an oxide or hydroxide of an alkali or alkaline earth metal;v) a complexing acid; andvi) optionally, a performance additive.2. The grease composition as claimed in claim 1, wherein the base oil is having viscosity in a range of ISO VG 2 to 3200 or a mixture thereof; wherein the base oil is selected from mineral base oils of API groups I-III, synthetic base oils of API group IV, ester base oil, paraffinic base oil, naphthenic base oil, and re-refined base oil; wherein the synthetic base oil is selected from polyalphaolefins (PAO), polyalkyl glycol (PAG), polyol esters, diesters and alkylated aromatics.3. The grease composition as claimed in claim 1, wherein the base oil is present in a range of 65.0-90.0 wt %; the saponifiable material is present in a range of 8.0-18.0 wt %; the oxide and hydroxide of an alkali and alkaline earth metal is present in a range of 0.20-3.0 wt %; the complexing acid is present in a range of 1.0-5.0 wt %; and the performance additive is present in a range of 0.01-3 wt %.4. The grease composition as claimed in claim 1, wherein the saponifiable material is a fatty acid selected from 12-hydroxy stearic acid, stearic acid, oleic acid or a mixture thereof; wherein the oxide or hydroxide of an alkali or alkaline earth metal is selected from sodium hydroxide, calcium oxide, calcium hydroxide, hydrated lime, lithium hydroxide, or lithium hydroxide monohydrate; and wherein the complexing acid is a dicarboxylic acid having C3 to C10 selected from malonic acid (C3), succinic acid (C4), glutaric acid (C5), adipic acid (C6), pimelic acid (C7), suberic acid (C8), azelaic acid (C9) or sebacic acid (C10); and wherein the performance additive is selected from rust and corrosion inhibitor, metal deactivator, metal passivator, antioxidant, pressure additive, polymer, tackifier, dye, chemical marker, fragrance imparter, anti-wear additive or a combination thereof.5. An open kettle single step process for preparing zinc-alkali/alkaline earth metal mixed complex grease composition, the process comprising:a) mixing a saponifiable material to a base oil to form a mixture;b) adding a complexing acid, a zinc oxide and an aqueous solution of oxide or hydroxide of an alkali or alkaline earth metal to the mixture obtained in step a);c) heating and dehydrating the mixture obtained in step b) with continuous stirring to obtain a solid mass;d) adding base oil to the solid mass obtained in step c) to form a mixture;e) cooling the mixture obtained in step d) and optionally adding a performance additive; andf) homogenizing the mixture obtained in step e) to obtain the mixed complex grease composition.6. The process as claimed in claim 5, wherein the mixing of step a) is performed at temperature in a range of 25 to 80° C.7. The process as claimed in claim 5, wherein the heating in step c) is performed in three consecutive steps in a sequence of specified steps, the steps comprising:i) heating at temperature in a range of 90-100° C. for 1 hour;ii) heating at temperature in a range of 130-140° C. for next 1 hour; andiii) heating at temperature in a range of 165-175° C. for another next 0.5 to 1.0 hours8. The process as claimed in claim 5, wherein the base oil has viscosity in a range of ISO VG 2 to 3200 or a mixture thereof; wherein the base oil is selected from API group I-III mineral base oils, synthetic base oils of API group IV, ester base oil, paraffinic base oil, naphthenic base oil, and re-refined base oil; wherein the synthetic base oil is selected from polyalphaolefins (PAO), polyalkyl glycol (PAG), polyol esters, diesters and alkylated aromatics.9. The process as claimed in claim 5, wherein the saponifiable material is a fatty acid selected from 12-hydroxy stearic acid, stearic acid, oleic acid or a mixture thereof; wherein the complexing acid is a dicarboxylic acid having C3 to C10 selected from malonic acid (C3), succinic acid (C4), glutaric acid (C5), adipic acid (C6), pimelic acid (C7), suberic acid (C8), azelaic acid (C9) or sebacic acid (C10); wherein the oxide or hydroxide of an alkali or alkaline earth metal is selected from sodium hydroxide, calcium oxide, calcium hydroxide, hydrated lime, lithium hydroxide, or lithium hydroxide monohydrate; and wherein the performance additive is selected from rust and corrosion inhibitor, metal deactivator, metal passivator, antioxidant, pressure additive, polymer, tackifier, dye, chemical marker, fragrance imparter, anti-wear additive or a combination thereof.10. The process as claimed in claim 5, wherein the base oil is present in a range of 65.0-90.0 wt %; the saponifiable material is present in a range of 8.0-18.0 wt %; the oxide and hydroxide of an alkali and alkaline earth metal is present in a range of 0.20-3.0 wt %; the complexing acid is present in a range of 1.0-5.0 wt %; and the performance additive is present in a range of 0.01-3 wt %.