Mobil Oil Corporation

W. R. Grace Co.

Harold A Kloczewski

Lloyd Steven White

Ronald M Gould

Thomas E Sulpizio

Krishna S Menon

Cheryl N Schaeffer

A semicontinuous process for solvent dewaxing a waxy petroleum oil feed stream including the steps of: diluting of the waxy oil feed stream with solvent; feeding cold oil/solvent/wax mixture to a filter to remove the wax and obtain an oil/solvent filtrate stream; contacting the oil/solvent filtrate stream with a selective semipermeable membrane to selectively transfer solvent through the membrane to obtain a solvent-rich permeate; and periodically directing a warm stream of recovered solvent onto the membrane surface to wash the membrane and remove impurities therefrom.

Lubricating oil dewaxing with membrane separation

A cell for coating enamel onto wire, including radiation curable polymers (RCP), which accomodates a plurality of wires simultaneously. The wires are first subjected to vacuum degassing, and then pass through a single seal plate into a pressurized enamel chamber which assures a concentric coating of enamel onto the wire as it exits through a die plate having a separate cavity for each wire. Floating seals are provided at the entrance of the wire into the cell. The coated wire is then radiation cured conventionally.

Pressurized wire enamel applicator cell

Growing community of inventors

Pasadena, MD, United States of America

Harold A Kloczewski