Compositions – Heat-exchange – low-freezing or pour point – or high boiling... – Organic components
Patent
1982-09-30
1985-08-27
Lieberman, Paul
Compositions
Heat-exchange, low-freezing or pour point, or high boiling...
Organic components
252 327E, 252 515A, 252 74, 252 76, 585 10, 585255, C10M 312, C07C 274
Patent
active
045376964
ABSTRACT:
Highly useful hydraulic fluids based on synthetic hydrocarbon basestocks and having improved low temperature properties, good shear stability, and capable of substantially meeting the rigid Denison HF-O standards are provided. The products of this invention are comprised of specific proportions of a two centistoke synthetic hydrocarbon oil obtained from the oligomerization of alpha-olefins, particularly 1-decene, specific polymethacrylate viscosity index improvers, and a zinc-based universal/multifunctional additive package. The hydraulic fluids have a maximum viscosity of 1400 centistokes at -40.degree. F. and minimum viscosity of 5.5 centistokes at 210.degree. F.
REFERENCES:
patent: 3450636 (1969-06-01), Rausch
patent: 3742082 (1973-06-01), Brennan
patent: 3763244 (1973-10-01), Shubkin
patent: 4032591 (1977-06-01), Cupples et al.
patent: 4101427 (1978-07-01), Shaub
Hatton, Introduction to Hydraulic Fluids, Reinhold Publishing Corp., New York, 1962, Chapter 6, p. 171.
Baracka Gerald A.
Lieberman Paul
National Distillers and Chemical Corporation
Tremain Kenneth D.
Wax Robert A.
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