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However, these sulfur compounds are extremely corrosive towards yellow metals, such as copper and water piping alloys. However, this test does not really provide a quantitative measurement of water piping corrosion. U. S. Pat. No. five, 254, 272 reveals lubricant compositions specially useful as hydraulic fluids contain the metal-free anti-wear or load-carrying additive that contains sulfur and/or phosphorus and an amino succinate ester because corrosion inhibitor. Circumstance. S. Pat. Zero. 5, 942, 470 discloses gear oils and kit oil additive concentrates of enhanced positraction performance comprising: (i) at least one oil-soluble sulfur-containing extreme pressure or antiwear agent; (ii) at least 1 oil-soluble amine salt of a partial ester of a great acid of phosphorus; and (iii) at least one oil-soluble succinimide compound. European Patent Application Number 678 569 B1 discloses a lubricating composition comprising a new major amount of a good oil of lubricating viscosity having an iodine number below 4, (A) a number of ashless antioxidants selected through amine antioxidants, dithiophosphoric esters, phenol vitamin antioxidants, dithiocarbamates and perfumed phosphates, (B) through 0. 01 in order to 3% by weight of a minumum of one boron-containing dispersant or cleaning agent, and optionally, (C) at least one additive selected coming from (i) a sulfur containing antiwear or perhaps extreme pressure real estate agent, (ii) a phosphorus or boron antiwear or extreme stress agent, and (iii) mixtures thereof, offered that (C) is usually different from (A), and wherein the quantity of antioxidant is from 2 to 10% by weight.


Preferably, R1 and R2 are independently an alkyl group of about 4 in order to 10 carbon atoms and more ideally, about 4 in order to 6 carbon atoms. Trialkyl phosphites useful in the present creation include (RO)3P exactly where R is a new hydrocarbyl of around 5 to 24 co2 atoms, more if possible about 8 to be able to 18 carbon atoms, and most ideally about 10 in order to 14 carbon atoms. The hydrocarbyl teams useful herein are usually preferably aliphatic alkyl groups of about three or more to eight carbon atoms. These dithiophosphates are those containing a couple of hydrocarbyl groups plus one hydrogen efficiency, and are as a result acidic. The lubricant composition comprises only two types of important additives, namely (a) a dithiocarbamic acid solution ester and/or an alkyl thiocarbamoyl chemical substance and (b) a 1, 3, 4-thiadiazole compound admixed with the lubricant base materials each in a limited amount. Inside this test, a sample of typically the lubricant was set in a warmed gear case that contain two spur gears, a test having, and a copper catalyst. Typically, the gear oil component composition will include about 5. 0 to 40 wt % from the ashless phosphorus-containing wear inhibitor compound.


This current invention relates to a gear oil ingredient composition and a gear oil formula containing the similar. In another element, the present innovation also provides with regard to a gear essential oil composition comprising a new major amount associated with basics oil regarding lubricating viscosity and a minor sum of the gear oil additive structure from the present creation. 5. 2 wt % (26. zero grams) of the particular base package E, 1. 2 wt % (6. a couple of grams) of pentaerythritol and polyisobutenyl succinic anhydride (molecular bodyweight 1000) ester dispersant, 15. 0 wt % (75. 0 grams) of solvent refined bright stock base oil (Citgo 150), and 78. 6 wt % (392. 8 grams) of solvent processed 600 neutral base oil (Exxon 600N) were mixed right up until the mixture had been homogenous. Pat. No . 4, 575, 431), 12. 2 wt % (1, 248. 0 grams) of Citgo 150 bright stock (base oil), and 84. 3 wt % (8, 595. 0 grams) of hydro-processed 600 neutral base essential oil (Chevron 600N) had been mixed until typically the mixture was homogenous. The camp oil of lubricating viscosity used in such arrangement may be nutrient oils or fake oils of viscosity suitable for employ in gears. Mineral oils for proper use as the base olive oil in this creation include, for example, paraffinic, naphthenic and other oils that are ordinarily used found in lubricating oil compositions.


3. 4 wt % (17. zero grams) of the base package J, 1. 2 wt % (6. 2 grams) of 1300 molecular weight succinimide ethylene carbonate post-treated dispersant, 15. 0 wt % (75. 0 grams) of solvent refined brilliant stock base essential oil (Citgo 150), and 80. 4 wt % (401. 7 grams) of solvent refined 600 neutral base oil (Exxon 600N) were blended until the mixture was homogenous. a few. 2 wt % (26. 0 grams) of the bottom package K, 13. 5 wt per-cent (62. 7 grams) of solvent refined bright stock bottom oil (Citgo 150), and 82. 3 wt % (411. 3 grams) regarding solvent refined six-hundred neutral base oil based (Exxon 600N) had been mixed until the particular mixture was homogenous. Pat. No . four, 575, 431), twelve. 1 wt % (60. 4 grams) of solvent refined bright stock base oil (Citgo 150), and 83. a couple of wt % (416. 2 grams) associated with hydra-processed 600 neutral base oil (Chevron 600N) were combined until the blend was homogenous. second . 4 wt percent (12. 1 grams) of an natural polysulfide containing a new mixture of di-tertiary-butyl tri-, tetra-, plus penta-sulfide having greater than 50 wt % di-tertiary-butyl tetra-sulfide (available as TBPS 454 from Chevron Phillips Chemical Company), zero. 3 wt percent (1. 5 grams) of thiadiazole (available as Hitec 4313 from Ethyl Corporation), 12. 3 wt % (61. several grams) of solvent refined bright share base oil (Citgo 150), and eighty-five. 0 wt (424. 7 grams) of hydro-processed 600 natural base oil (Chevron 600N) were mixed until the blend was homogenous.