This specification covers a ready-to-mix black vinyl chloride-acetate paint intended for use over vinyl butyral wash primer (SSPC-Paint 27*) or as an intermediate or finish coat over vinyl paint. This paint is not intended for use over bare steel.
This paint is suitable for exposures in Environmental Zones 2C (fresh water immersion), 2D (salt water immersion), 3A (chemical, acidic), and 3B (chemical, neutral), and is intended primarily to be used in a system applied to blast cleaned (SSPC-SP 10) or pickled (SSPC-SP 8) steel. When used for salt water immersion, a wash primer is recommended. Because of the possibility of lifting of the undercoats, this paint is not intended to be used over types of paints which have poor solvent resistance. This paint is intended primarily for application by conventional air spray and is to be applied in accordance with SSPC-PA 1, “Shop, Field, and Maintenance Painting of Steel.”
This paint consists of carbon black pigment and vinyl resins in solution suitably plasticized to make a durable, elastic paint film. This paint includes a hydroxylcontaining polymer for good adhesion to wash primers or other vinyl paints. Adhesion to bare steel is poor.
This paint contains approximately 13% by volume of nonvolatile film-forming solids (pigment and binder). The theoretical spreading rate for a 1.0 mil (25 micrometers) dry film thickness is 210 square feet/U.S. gallon (5.1 square meters/liter). Actual spreading rates can be significantly lower.
