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US 6,486,249 B1Granted
Asphalt release agent
AssigneeAshland Inc.
InventorsMichael A. Dituro, Frances E. Lockwood, Daniel J. Dotson, Jiafu Fang
Life of this patent
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Abstract
The present invention relates generally to the field of release agents commonly in uses in preventing asphalt and other sticky compounds such as rubbers from sticking to the transporting vehicles such as dump truck beds and processing tools, and equipment, and more particularly to a novel biodegradable release agent applied to metal surfaces prior to use for promoting free release of sticky hot-mix asphalt materials from the metal tools and equipment used in road construction applications.
Claims32
An asphalt release agent concentrate, comprising:
- a polyvinyl alcohol in an amount of from about 1.0 to about 10% by weight;
- a plasticizer in an amount of from about 5 to about 40% by weight;
- a polyalkylglycol and derivatives thereof in an amount of from about 1 to 20% by weight;
- and
- a wetting agent in an amount of from about 0.001 to about 5.0% by weight.
2 more elements
Dependencies are inferred from the claim text.