Encyclopedia of Polymer Science, Macromolecular Materials, and Industrial Coatings

• Alloprene — A commercial or technical designation attributed to a type of chlorinated synthetic rubber, obtained through the controlled chlorination of natural rubber or polyisoprene. This macromolecular compound stands out structurally due to its exceptional resistance to acids, oxidizing alkaline substances, and aggressive climatic factors, utilized on an industrial scale as a binder or core component in manufacturing anti-corrosive paints, special adhesives, and chemical protective coatings.
• Anhydride — An organic or inorganic chemical compound formed by eliminating a water molecule from an acid or, less frequently, from an alcohol. Structurally, acid anhydrides react rapidly with water to regenerate their parent acid, being widely used in industrial synthesis, the manufacturing of plastics, pharmaceuticals, dyes, and as acylating agents in research laboratories.
• Azeotrope — A liquid mixture consisting of two or more chemical components that boils at a constant and fixed temperature, maintaining its identical structural composition in both the liquid and vapor phases. Because the generated vapors have exactly the same proportions of substances as the liquid from which they originate, an azeotrope cannot be separated or purified by simple fractional distillation, behaving thermodynamically like a single pure compound and requiring special separation methods, such as extractive azeotropic distillation.