2results about How to "High gloss retention" patented technology

The invention provides fluoroalkyl side group-containing acrylic resin for a powder coating and a preparation method of the fluoroalkyl side group-containing acrylic resin, ethyl trifluoroacrylate (TFEA), glycidyl methacrylate (GMA) and methyl methacrylate (MMA) are added and mixed in a certain proportion range to obtain a mixed solution, so that the ethyl fluoroacrylate is subjected to a polymerization reaction, and the fluoroalkyl side group-containing acrylic resin is obtained. And heat preservation is arranged, so that a mixed solution can be fully reacted, then solute of the mixed solution can be separated out through vacuumizing, and finally, the transparent fluoroalkyl-containing side group acrylic resin with high water resistance and ageing resistance can be obtained through drying, and the water resistance and gloss retention are good.

This invention provides a carboxyl-terminated modified polyamide toughening agent, its preparation method, and its application. The carboxyl-terminated modified polyamide toughening agent comprises the following components in parts by weight: 55-70 parts of dimer acid, 5-12 parts of aliphatic diamine, 5-15 parts of aromatic dicarboxylic acid, 2-8 parts of modified monomer, 0.1-0.5 parts of catalyst, and 0.2-1 parts of antioxidant. The carboxyl-terminated modified polyamide toughening agent obtained by this invention, when applied to powder coatings, exhibits good flexibility and impact strength, achieving a balance between flexibility and rigidity; it has good boiling water resistance, without defects such as blistering, peeling, discoloration, or loss of gloss; and it has good solvent resistance, resulting in a high gloss retention rate for the coating.