C - Chemistry – Metallurgy – 09 – K
Patent
C - Chemistry, Metallurgy
09
K
C09K 3/00 (2006.01) B05D 5/08 (2006.01)
Patent
CA 2060992
An improved method of prevention of adhesion of hot-mix asphalt to dump trucks and other containers or equipment comprises preparing an aqueous dispersion of a vegetable oil and applying the dispersion to the surface of the container before loading the hot-mix asphalt therein. Vegetable oils which are useful as release agents in aqueous dispersion include cottonseed oil, soya oil, rate (canola) oil, peanut oil, corn oil, sunflower oil, palm oil, coconut oil and palm kernel oil. The oil is emulsified in water, using a suitable emulsifier, preferably a sorbitol base emulsifier, in the amount of 1 - 5 oz. per gallon of water. The oil and emulsifier are preferably premixed and supplied as a self-emulsifiable composition. The resulting emulsion is applied in an amount to provide a thin coating on the wall of the container or equipment. The emulsion is applied in the amount of 3 - 4 qts. to coat a dump truck or 4 - 6 qts. to coat a trailer. The hot-mix asphalt is easily removed from the container, i.e. truck or trailer, or other equipment without sticking and the release agent has been found to be completely biodegradable.
Ballenger William Thomas Jr.
Light Terry John Sr.
Asphalt Control Systems Inc.
Finlayson & Singlehurst
LandOfFree
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