Of lubricating grease

D 1743 1987 Test method for corrosion preventive properties of lubricating greases... 

Colloid mills are used to grind and disperse solids in hquids and to prepare emulsions. They operate on the principle of high-speed fluid shear to grind the feed material. Another application is in the manufacture of lubricating greases by dispersion of calcium stearate in hydrocarbon oils. In the paint industry, colloid mills are used to incorporate pigments in liquid vehicles. In the food industry, the mills are used to make purees, sauces, ointments, creams, lotions, and other products. 

The National Lubricating Grease Institute, whose main office is in Kansas City, Mo., collects technical information regarding the manufacture or application of lubricating greases. In addition, monthly data on new products, new equipment, production facilities, and processes are available. 

One particular method (ASTM D 1742, IP 121) is used to determine the tendency of lubricating grease to separate oil when stored at 25°C (77°F) at an applied air pressure of 1.72 kN/m (0.25 psi). The test gives an indication of the oil retention characteristics of lubricating grease stored in both normally filled and partially filled containers. The duration of this test is either 24 h (ASTM D-1742) or 7 days (IP 121), and the data often correlate directly with oil separation that occurs in 16-kg (35 lb) containers of grease stored at room temperature. 

Method IP50. Determination of Cone Penetration of Lubricating Grease. IP Standard Methods for Analysis and Testing of Petroleum and Related Products and British Standard 2000 Parts. Energy Institute. 

Polishuk, A. T. (1998) A Brief History of Lubricating Greases, Llewellyn McKane, Wilkes-Barre, PA. 

Sinitsyn, V. V. (1974) The Choice and Application of Plastic Greases, Khimiya, Moscow. Hamnelid, L. (2000) Introductory Chapter in The Rheology of Lubricating Greases, ELGI, Amsterdam. 

Boner, C. J. (1954) Manufacture and Application of Lubricating Grease, Reinhold Publishing Corp., New York. 

B. W. Hotten and D. H. Birdsall, Ind. Eng. Chem., 47 (1955) 447-451. ASTM Method D 217-67, Cone Penetration of Lubricating Grease, ASTM Standards Book, Part 17—Petroleum Products, American Society for Testing and Materials, Philadelphia. 

ASTM Method D 1831-64, Roll Stability of Lubricating Grease, ASTM Standards Book, Part 17—Petroleum Products, American Society for Testing and Materials, Philadelphia. 

The salts of the inorganic esters of nonylphenol with phosphoric acid and sulphuric acid are frequently employed in a variety of applications. For example, the dilithio salt of nonylphenylphosphate has been employed as a component of lubricating greases (ref.42). 

Bis(dithio)thiadiazoles (e.g., 524)113,515 and bis(thiosulfenamides)516 are employed as corrosion inhibitors in lubricants. The antiwear and extreme-pressure properties of lubricating greases are improved by the addition of (polymeric) 3,5-dimercapto-l,2,4-thiadiazole,517 2,4-dialky 1-1,2,4-thiadiazo-... 

Elemental Analysis of Lubricating Grease by Inductively Coupled Plasma Atomic Emission Spectrometry (ICP-AES)... 

Dresel, W. H., "Performance of Mixtures of Lubricating Greases with Different Thickeners," Paper presented October 29, 2002 at National Lubricating Grease Institute (NLGI) 69 Annual Meeting, Preprint 0217. 

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