Abstract: An article generally comprises an epoxy base coat and a urethane top coat which has particular use for application. The epoxy composition is generally a two-part, 100 percent volatile-free system containing one or more hardeners which are reacted with an epoxy component such as the glycidyl ether of bisphenol-A. The urethane composition is also generally a two-part, 100 percent volatile-free system containing a polyisocyanate component and an intermediate component comprising a polylactone polyol, and/or a polyether polyol, a polyester polyol, or a polyether-ester polyol, an aliphatic polyol chain extender and a moisture scavenger. The two-part epoxy composition can be applied to a road with the urethane composition coated thereon whereupon it serves as a lane marker. The urethane composition has exceptional weatherability, abrasion-resistance and non-yellowing characteristics.

Abstract: There is disclosed a method of and composition for making exposed aggregate concrete castings which comprises applying a film to the face of the mold or form, comprising a chelating agent to prevent the setting of the cement to a pre-determined depth at the face, whereby the ultimate appearance of the casting is decorative and the removal of the matrix to produce such appearance is effected by water, the penetration of the compound into the face depending on the selection and concentration of various ingredients. A single film only is applied to the form, and the material from which the film is formed includes cellulose ethers, aliphatic hydroxy acid or salts thereof, and one or a mixture of the lower aliphatic alcohols selected from the group methanol, ethanol or iso-proponol or a ketone. A plasticizer is often used as well as an identifying dye.