![]() ![]() After application, the emulsifying agent destabilizes, and the water evaporates, allowing the particles in the slurry to bond and form a solid film. Because all coal tar sealers are regulated and produced to meet federal specifications, the mixture of these additives is what professionals primarily use to achieve different sealant results.Īfter mixing the concentrated coal tar emulsion with water and additives, the slurry is applied to the driveway surface in an even coat. Additives: Coal tar sealant concentrate is usually mixed with sand, clay, and polymer additives to improve its durability and ease of application.These molecules surround coal tar particles and give them an electric charge, causing them to repel each other and stay suspended in water. Emulsifying agent: Also known as the surfactant, the emulsifying agent is a water-soluble, soap-like substance that consists of an ionic head and a hydrocarbon tail.The most viscous category is RT-12, which is used in the production of coal tar sealcoat. ![]() This pitch is refined and separated into 12 grades of viscosity, which are each used in different industries, like the aluminum and steel industries. Coal tar: Coal tar is a refined form of a byproduct called coke oven tar, which is a residue left after the distillation of oils for use in industrial and consumer manufacturing.Refined coal tar-based sealers are emulsions that primarily consist of coal tar, pure water, emulsifying agents, and additives. ![]()
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