Лако-красочные материалы — производство

Reactive polyamide resins are typically prepared by condensation of dimerized fatty acid with excess equivalents of aliphatic diami­nes. Reactive liquid polyamide resins are designed primarily for use in two-component epoxy-polyamide coatings and adhesives. Gene­rally, reactive polyamide resins are supplied as either very viscous liquids or viscous solutions in organic solvents. In reactive polya­mides, monofunctional fatty acids are used with dimer fatty acids to control the MW as well as viscosity. During their synthesis, a cyclization reaction between an amide group and secondary amine nitrogen, separated by an ethylene linkage, forms imidazoline ring structures. By varying the imidazoline content, products with a wide range of solubility, compatibility and pot life can be prepared.