Nitrated extreme pressure additives and blends

Details Nitrated extreme pressure additives and blends Nitrated extreme pressure additives and blends

2007-07-16

2011-11-15

Marcheschi, Michael (Department: 1775)

Colloid systems and wetting agents; subcombinations thereof; pro

Continuous liquid or supercritical phase: colloid systems;...

Aqueous continuous liquid phase and discontinuous phase...

C508S549000

Reexamination Certificate

active

08058317

ABSTRACT:
This Invention relates to products and processes for making extreme-pressure additives (water-dispersible and oil-based). The process includes nitrating fatty raw material sources such as animal fats, vegetable oils, the fatty acids and synthetic esters derived therefrom, terminal or internal olefins, polyalkenes or their linear copolymers, and alkylated phenols, using 70% nitric acid or nitrogen dioxide gas. The additives are used as soluble oils or as lubricating blends by the inclusion of emulsifiers. The nitrated unsaturated fatty acids such as tallow fatty acid, oleic acid, tall oil fatty acid, tall-oil derived dimer acids, castor oil fatty acid, alkyl succinic acids, are modified by post-reaction to form alkanolamine (monoethanolamine, triethanolamine) salts or alkanolamides in order to obtain the derived water-dispersible nitro-EP additives. The same nitration method is used to make ethoxylated fatty esters by reaction with water-soluble polyglycols in order to obtain water-dispersible nitro-EP additives.

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PCT—International Preliminary Report on Patentability and Written Opinion from KIPO dated Dec. 3, 2009.

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