Method of prevention of adhesion of hot-mix asphalt to container

Details Method of prevention of adhesion of hot-mix asphalt to container Method of prevention of adhesion of hot-mix asphalt to container

1991-03-25

1993-02-16

Bell, Janyce

Coating processes

Removable protective coating applied

Metal base

427154, 427133, 427230, 427233, 427384, 427417, 427421, B05D 722

Patent

active

051869799

ABSTRACT:
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 aqeous 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-emulsifier 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.

REFERENCES:
patent: 2015290 (1935-09-01), Sanders
patent: 2047385 (1936-07-01), Sanders
patent: 4312901 (1982-01-01), Kekish et al.
patent: 4421791 (1983-12-01), Kerish et al.
patent: 4425381 (1984-01-01), Walsh

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