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    Process for the preparation of high temperature anti-friction bearing lubricants
    303.
    发明授权
    Process for the preparation of high temperature anti-friction bearing lubricants 失效
    制备高温抗摩擦轴承润滑剂的方法

    公开(公告)号：US2825694A

    公开(公告)日：1958-03-04

    申请号：US27843252

    申请日：1952-03-25

    Applicant: EXXON RESEARCH ENGINEERING CO

    Inventor： MORWAY ARNOLD J

    IPC: B65B43/26

    CPC classification number: C10M5/00 ,  C10M2201/063 ,  C10M2203/10 ,  C10M2203/102 ,  C10M2205/00 ,  C10M2205/04 ,  C10M2205/22 ,  C10M2207/04 ,  C10M2207/044 ,  C10M2207/121 ,  C10M2207/122 ,  C10M2207/124 ,  C10M2207/125 ,  C10M2207/129 ,  C10M2207/281 ,  C10M2207/282 ,  C10M2207/283 ,  C10M2207/286 ,  C10M2207/30 ,  C10M2207/302 ,  C10M2207/32 ,  C10M2207/34 ,  C10M2209/04 ,  C10M2209/06 ,  C10M2209/062 ,  C10M2209/103 ,  C10M2209/11 ,  C10M2209/112 ,  C10M2215/065 ,  C10M2215/14 ,  C10M2219/044 ,  C10M2229/02 ,  C10M2229/04 ,  C10M2229/042 ,  C10M2229/043 ,  C10M2229/044 ,  C10M2229/05 ,  C10N2210/01 ,  C10N2240/02 ,  C10N2250/10 ,  C10N2270/00

    Abstract: Lubricating grease compositions are prepared by admixing with a lubricating oil a complex soap as defined below, heating the mixture to dissolve the soap, cooling the heated mixture until the soap crystallizes and a grease structure is formed, and then thickening the cooled mixture by the application of a rate of shear in excess of 10,000 reciprocal seconds without concurrent mixing. After the cooling step and before the thickening step, additional lubricating oil may be added to the cooled mixture, but this additional lubricating oil must have a viscosity index less than 75 unless the rate of cooling has been greater than that corresponding to atmospheric cooling. The complex soap is defined as a soap of rapeseed oil or a mixture of soaps containing more than 8 carbon atoms in the molcule and monocarboxylate salts (e.g. acetates, furoates and acrylates) containing less than 8 carbon atoms in the molecule. The lubricating oil may be mineral oil but, where additional lubricating oil is added as mentioned above, this additional oil may be a synthetic lubricating oil Synthetic oils mentioned are polymerized silicone oils, long-chain formals, organic carbonates, polymerized olefins, esters and copolymers of aliphatic and aromatic compounds. Ester lubricating oils mentioned are esters of mono- or poly-basic acids, esters of glycols, of polymerized glycols or of glycol ethers, complex esters such as monohydric alcoholdibasic acid-glycol esters or monohydric alcohol-dibasic acid-glycol-monobasic acid esters, or blends of esters. The complex soap may be formed in situ in the lubricating oil. The high rates of shear may be produced in a Gaulin homogenizer, a rolling mill, a Morehouse mill or a pressure viscosimeter. In the examples, lubricating greases are prepared according to the process of the invention from mineral lubricating oil and sodium soap of rapeseed oil, with or without phenyl alpha-naphthylamine. N, N1-disalicylidene-1, 2-diaminopropane and sodium mahogany sulphonate, and in some cases additional synthetic lubricating oil is incorporated; the synthetic lubricating oils employed are (a) a blend of di-2-ethylhexyl sebacate and a complex ester obtained by reacting 2 mols of the 2-ethylhexyl half ester of adipic acid with 1 mol of a polyethylene glycol, (b) a phenyl silicone fluid, and (c) a formal of C8 oxo alcohol. In further examples, lubricating greases are prepared according to the process of the invention from (i) mineral lubricating oil, lithium hydroxide, hydrogenated fish oil fatty acids, acetic acid and phenyl alpha-naphthylamine and (ii) mineral lubricating oil, sodium hydroxide, hydrogenated fish oil fatty acids, furfural (which reacts with the sodium hydroxide according to the Cavvizarro reaction to form sodium furoate), and phenyl alpha-naphthylamine. Some of the greases of the examples contain free alkali.

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