Chemically modified vegetable oil-based industrial fluid

Organic compounds -- part of the class 532-570 series – Organic compounds – Fatty compounds having an acid moiety which contains the...

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C554S148000, C554S149000, C554S164000, C554S227000, C508S452000

Reissue Patent

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RE042313

ABSTRACT:
Triglyceride oils having unsaturated fatty acid substituents are modified to convert sites of unsaturation to C-2 to C-10 diesters. The resulting derivatives are characterized by thermal and oxidative stability, have low temperature performance properties and are environmentally-friendly. They have utility as hydraulic fluids, lubricants, metal working fluids and other industrial fluids. The triglyceride oils are most easily prepared via epoxidized vegetable oils which are converted to the diesters in either a one- or two-step reaction.

REFERENCES:
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patent: 5164124 (1992-11-01), Lange et al.
patent: 6121398 (2000-09-01), Wool et al.
Teeter, H.M., et al., “Synthetic Lubricants from Hydroxystearic Acids”,Industrial and Engineering Chemistry, vol. 45, No. 8, pp. 1777-1779, Aug. 1953.
Gast, L. E., et al., “Synthetic Lubricants from Polyhydroxysteric Acids”,Industrial and Engineering Chemistry, vol. 46, pp. 2205-2208, Oct. 1954.

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