Abstract: A new polyetherpolyurethane system for the formation of end caps for oil filters is disclosed using a blended oxyalkylene polyol having a functionality greater than 2 and the absence of any oxyethylene component. The blend having a functionality greater than 2 is mixed with a diol cross linker prior to reacting with an isocyanate.

Abstract: An apparatus for cleaning the interior of storage tanks of the type used for storing large volumes of crude oil wherein hydrocarbon sludge accumulates with the passage of time. The apparatus comprises a crude oil circulator having rotatable nozzles positioned within the tank, a gear member externally disposed on an outer surface of a hollow rotor, and a worm gear operatively connected to the gear member. A drive shaft is connected, through a valve opening in the tank wall, to a motor unit. Upon failure of the worm gear, the worm gear is removed from the tank through the valve opening, replaced or repaired, and reintroduced into the tank through the valve opening.

Abstract: The present invention is used in response to petroleum related spills in the environment. The hydrocarbon materials can be removed from any substrate, particularly ice or beach sand, by impinging in two separate fluid streams, a formable surfactant/emulsifying solution with a latent foaming agent and a foam inducing agent through specially designed variable pressure guns. Once treated, the petroleum-related liquids are lifted above the substrate in a foam matrix formed while the solution is in contact with the spilled contaminants, and captured via standard industrial vacuum technology for later disposal.