The Lubrizol Corporation

Cpi Engineering Services, Inc.

Thomas Edward Rajewski

John Carl Tolfa

Glenn D Short

Kenneth C Lilje

Hsinheng Li

Gilbert R Malone

Lars I Sj Oholm

Diane L Dick

Jill Ellen Oberle

Polymeric additives are disclosed for compressor lubricants which can reduce the tendency of the lubricant to become entrained in compressed gases and be carried forward as fine dispersed droplets in compressed gas systems such as compressed air, natural gas, and compression refrigeration systems.

Lubricant useful for improving the oil separation performance of a vapor compression system

A formate salt based heat transfer fluid containing sulfamic acid for a secondary refrigeration loop is disclosed. The formate based heat transfer fluid generally is a more effective heat transfer medium than a glycol based fluid designed to operate in the same temperature range. The formate based fluid also has lower toxicity and environmental risks than the glycol fluid.

Heat transfer fluid for secondary refrigeration systems comprising a formate salt and sulfamic acid

A problem with refrigeration systems using ammonia as the refrigerant and hydrocarbon lubricants is that the seals/gaskets of the systems have a tendency to harden and shrink. This can cause leakage of the refrigerant and eventually require disassembly of the equipment and replacement of the seals. The addition of a small amount polyether having an aromatic fragment of 6-18 carbon atoms or an aliphatic fragment of 10-22 carbon atoms can soften the seals and partially re-swell the seals solving the leakage problem and avoiding expensive maintenance costs. Alternatively a polyether of 1,2-butylene oxide which is more oil soluble than most other polyethers with a smaller Z group e.g. derived from alkanols of 1 to 9 carbon would be effective at reducing hardening and shrinkage.

Lubricant composition for ammonia based refrigerants with good seal performance

Lubricant refrigerant composition for hydrofluorocarbon (HFC) refrigerants

Lubricant composition comprising an aliphatic substituted naphthalene alone or in combination refrigeration systems

A fluid composition of suitable miscibility and solubility in ammonia, chlorofluorocarbon, hydrochlorofluorocarbon, and hydrofluorocarbon refrigerants includes and a refrigerant selected from the group consisting essentially of ammonia, chlorofluorocarbons, hydrochlorofluorocarbons, and hydrofluorocarbon refrigerants and a lubricant composition made with an organic oxide and an alcohol and comprises a polyalkylene glycol of the formula:

Lubricant composition for ammonia refrigerants used in compression

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Bay City, MI, United States of America

Thomas Edward Rajewski