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    Polyol ester lubricants, especially those compatible with mineral oils, for refrigerating compressors operating at high temperatures
    4.
    发明授权
    Polyol ester lubricants, especially those compatible with mineral oils, for refrigerating compressors operating at high temperatures 失效
    多元醇酯润滑剂，特别是与矿物油相容的润滑剂，用于在高温下运行的制冷压缩机

    公开(公告)号：US06183662B2

    公开(公告)日：2001-02-06

    申请号：US08944938

    申请日：1997-10-02

    申请人： Nicholas E. Schnur

    发明人： Nicholas E. Schnur

    IPC分类号： C09K504

    CPC分类号： C10M171/008 ,  C09K5/045 ,  C09K2205/24 ,  C10M105/38 ,  C10M105/42 ,  C10M169/04 ,  C10M2207/281 ,  C10M2207/282 ,  C10M2207/283 ,  C10M2207/286 ,  C10M2207/30 ,  C10M2207/302 ,  C10M2211/022 ,  C10M2211/06 ,  C10M2229/05 ,  C10N2240/00 ,  C10N2240/22 ,  C10N2240/30 ,  C10N2240/50 ,  C10N2240/52 ,  C10N2240/54 ,  C10N2240/56 ,  C10N2240/58 ,  C10N2240/60 ,  C10N2240/66

    摘要： A two-step process comprising as a first step draining a refrigerant heat transfer fluid made of molecules containing at least one chlorine atom per molecule and mineral oil lubricant dissolved therein from an unflushable compressor and associated piping in a vehicle air conditioner, thereby leaving a mineral oil residue. The second step comprises replacing the refrigerant heat transfer fluid in all parts of the vehicle air conditioner designed to contain such fluid with a replacement heat transfer fluid. The replacement fluid consists essentially of 1,1,1,2-tetrafluorethane and a composition of matter suitable for serving as the lubricant or lubricant base stock. The composition of matter is capable of forming a soluble clear solution with a mineral oil residue in a weight ratio of mineral oil to composition of at least 25:100 and forming a single phase with 1,1,1,2-tetrafluoroethane between −55° C. and +71° C. The composition of matter is a liquid having a viscosity between 45 and 220 centistokes at 40° C. and consisting essentially of a mixture of polyol esters derived primarily from pentaerythritol and an acid mixture comprising isopentanoic acid, branched acids of eight and/or nine carbon atoms and adipic acid.

    摘要翻译： 一种两步法，其包括作为第一步骤，将由分子至少含有一个氯原子的分子制成的制冷剂传热流体和溶解在其中的矿物油润滑剂从不可冷却的压缩机和车辆空调中的相关管道中排出，从而留下矿物质 油渣。 第二步包括用设置成容纳这种流体的车辆空调的所有部分用替换的传热流体代替制冷剂传热流体。 替代流体基本上由1,1,1,2-四氟乙烷和适合用作润滑剂或润滑剂基础油的物质组合物组成。 物质的组成能够形成可溶性澄清溶液，其中矿物油残余物与矿物油的重量比至少为25:100，并与1,1,1,2-四氟乙烷在-55℃之间形成单相 ℃和+ 71℃。物质的组成是在40℃下粘度在45至220厘沲之间的液体，并且基本上由主要由季戊四醇衍生的多元醇酯和包含异戊酸的酸混合物的混合物组成， 八个和/或九个碳原子的支链酸和己二酸。