润滑科技信息平台

专利摘要

提供了一种润滑剂组合物,其相对于常规高温润滑剂具有减少的沉积物形成和低蒸发,从而允许在高温应用中改进性能。高温润滑剂组合物包括基础油,其中基础油包括至少一种多元醇酯和至少一种均苯四酸酯。在一些实施例中,润滑剂组合物还包含一种或多种选自极压添加剂、抗磨添加剂、防锈添加剂、腐蚀抑制剂和抗氧化剂或其组合的添加剂。还提供了用于润滑使用该润滑剂组合物的设备的方法、用于改进常规高温润滑剂的操作润滑的方法,以及制备本发明的高温润滑剂组合物的方法。 ......

基本信息

专利类型:
发明专利
申请/专利号:
EP2017872730
申请日期:
2017-11-17
专利申请人:
分类号:
["C10M105/38","C10M105/32","C10M105/36"]
发明/设计人:
HOUSEL, TYLER ， HOUSEL, NICHOLAS ， CASS, EDWARD
权利要求: 1. A lubricant composition, comprising: a base oil comprising a mixture of a dipentaerythritol ester and at least one pyromellitate ester, wherein the dipentaerythritol ester has a structure according to the following formula: wherein each R group is a linear or branched, saturated alkyl group having between 4 and 10 carbon atoms, wherein the dipentaerythritol ester is present in an amount of 10 to 40% by weight of the lubricant composition, and wherein the pyromellitate ester has a structure according to the following formula: wherein R1 is a branched or unbranched, saturated alkyl group having 3 to 15 carbon atoms, wherein the pyromellitate ester is present in an amount of 50 to 65% by weight of the lubricant composition, and one or more additives selected from the group consisting of at least one antioxidant, an extreme pressure additive, an anti-wear additive, an anti-rust additive, and a corrosion inhibitor or combinations thereof, wherein, after at least 68 hours at a temperature of 240°C, the lubricant composition has a liquid fraction of at least 50 percent.2. The lubricant composition of claim 1, wherein at least one R group is a linear, saturated alkyl group, and wherein at least one R group is a branched, saturated alkyl group.3. The lubricant composition of claim 1, further having a kinematic viscosity at 40°C of 90 to 250 centistokes.4. The lubricant composition of any one of claims 1-3, wherein the at least one pyromellitate ester comprises tetra 2-ethylhexyl pyromellitate, tetraisopropyl pyromellitate, tetraheptyl pyromellitate, tetraoctyl pyromellitate, tetranonyl pyromellitate, tetradecyl pyromellitate, tetraisodecyl pyromellitate, tetra isononyl pyromellitate, tetra isooctyl pyromellitate, tetrabutyl pyromellitate, tetra isobutyl pyromellitate, or combinations thereof.5. The lubricant composition of claim 1, wherein the lubricant composition has a kinematic viscosity at 40°C of 198 to 242 centistokes.6. The lubricant composition of claim 1 or 5, wherein R1 has 3 to 13 carbon atoms.7. The lubricant composition of claim 1 or 5, wherein the at least one pyromellitate ester comprises tetra 2-ethylhexyl pyromellitate.