THREE NEW ANTI-WEAR AND EXTREME-PRESSURE ADDITIVES

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THREE NEW ANTI-WEAR AND EXTREME-PRESSURE ADDITIVES
28 April 2003 - Great Lakes Chemical Corporation

Great Lakes Chemical Corporation has launched Durad 40, Durad48 and Durad 60 trialkyl phosphate anti-wear and extreme-pressure lubricant additives as effective alternatives to aryl phosphate additives for environmentally sensitive applications where the release of phenolic materials is a concern.

Aryl phosphate ester lubricant additives have been widely used to improve the anti-wear properties of a wide range of mineral oil and synthetic lubricant base stocks, particularly in hydraulic, turbine and general circulatory oil applications. In certain uses, where the oil is exposed to water, these additives may breakdown to release small amounts of phenolic materials. For environmentally sensitive applications, Durad trialkyl phosphate additives provide a phenol-free solution.

Applications that require extreme-pressure oil performance, such as metalworking, have traditionally used alkyl acid phosphate-based lubricant additives. These additives are difficult to handle and readily hydrolyse, and alkyl acid phosphates can interact with other additives such as basic metal salts. In addition, they can promote foam when used in aqueous applications and insoluble salts in hard water applications. Durad neutral trialkyl phosphates are free from such disadvantages and synergise very effectively with sulphur carriers to provide enhanced extreme-pressure performance for applications, such as gear oils and metalworking. In these applications, Durad trialkyl phosphates also alleviate the need for additional lubricity additives.

Durad trialkyl phosphate additives are designed for use in a variety of applications, based on specific lubricant base stock and performance requirements - Durad 48, for most oil applications; Durad 40 for aqueous applications; and Durad 60 for when high anti-wear performance is needed.

Durad trialkyl phosphates are low viscosity liquids that are compatible with a broad range of mineral and synthetic oils. In addition to being ashless (free of metals), Durad additives do not contain elements such as chlorine or sulphur, which are undesirable in some applications.

Trialkyl phosphate anti-wear and extreme pressure additives complement Great Lakes’ existing range of triaryl phosphate ester additives for lubricants, antioxidants and fire-resistant fluids.

http://www.pa.greatlakes.com

About: Great Lakes Chemical Corporation
Great Lakes Chemical Corp’s products and services help treat and purify water, eliminate germs and contaminants from household surfaces, protect against and extinguish fire, and enhance the stability and performance of a wide range of consumer products, such as computers, electronics, cars, packaging, building materials, and furniture. It serve its customers around the world through an integrated network of research, production, sales, distribution and technical services facilities. The stock of the company is traded on the New York Stock Exchange.

Great Lakes Chemical Corporation is the world’s leading producer of certain specialty chemicals for such applications as water treatment, household cleaners, flame retardants, polymer stabilizers, fire suppression, and performance chemicals.

Through its Polymer Additives division, Great Lakes offers a full line of UV stabilizers, antioxidants, additive blends , nucleating agents/clarifiers, and optical monomers, as well as a leading line of flame retardants that include bromine-, phosphorus-, and antimony-based flame retardants and other synergists. These are available as powder blends or in NDB (No Dust Blend) granular form. Each blend contains exactly the correct composition of additives required to achieve optimum polymer quality and productivity.

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