Abstract: This invention relates to a method of cleaning rubber off of rubber-soiled runways that utilizes solvents that are at least partially bio-derived. It is surprisingly found that cleaning compositions that utilize novel solvents that are at least partially bio-derived are effective runway cleaners, while simultaneously providing an enhanced environmental and/or economic profile to the formulation.

Abstract: This invention relates to a method of cleaning rubber off of rubber-soiled runways that is free from the usual alkylphenol alkoxylates, which are becoming increasingly scrutinized and discouraged due to environmental considerations. Instead, it is surprisingly found that linear alcohol alkoxylates provide cleaning compositions that are actually more effective, while simultaneously providing an enhanced environmental profile to the formulation.

Abstract: Compositions for cleaning concrete or other cementitious substrates that do not contribute to the alkali-silicate reaction are provided, and methods for use thereof The cleaning compositions comprise lithium salts such as lithium hydroxide, lithium oxide and/or lithium carbonate, at least one surface active agent, optionally a glycol ether and/or hydrocarbon solvent, a sodium-free or substantially sodium-free chelating agent or agents and/or one or more adjuncts at least partially contributing to the useful properties of the composition.

Abstract: A method of preventing tar, asphalt and related material from sticking to paving equipment involves spraying a release agent concentrate diluted with water contemporaneously with spraying, utilizing a carbonator pump capable of about 1 gallon per minute pumping rate at about 200 psi, an appropriately-sized motor, a pushbutton momentary contact switch, a timing relay capable of switching the motor on and running it for about 1-2 minutes, a spray gun and appropriately-sized nozzle, appropriate fittings and hoses, and such optional ancillary devices as solenoid valves, particulate screens and freeze protection. The major advantages of the instant invention are that it is simple and economical to build, very robust, and is capable of delivering a good spray pattern at relatively high concentrations of viscous release agents.

Abstract: A method of preventing asphalt and tar from sticking to paving equipment comprises diluting a concentrate with about four to about 50 parts water to one part concentrate and spraying, rolling or brushing the diluted concentrate on the equipment, coating the dilution on equipment prior to its coming into contact with tar or asphalt. The concentrate comprises a fatty acid amide or mixture of fatty acid amides, a fatty acid neutralized with an excess of an alkyl- or alkanol- or mixed-type amine or ammonia, and an optional solvent or solvents. The chief advantages of the instant invention are that the dilutions are viscous, and so prevent the diluted material from running off of the equipment prior to contact with tar or asphalt, and that the diluted material leaves a lubricious film on the surface even after all the water in the diluted film has evaporated.