Preparation process and application of modified polyester resin

• Main Authors: ZHOU RUXUE, LI SINING, YANG LIYING, ZHANG JINGWEN, YAO JIA, JIANG RONG, WANG QIANWEN, WU XINSONG, SUN GUANGYING
• Format: Patent
• Language: Chinese; English
• Published: 30.08.2024
• Subjects: ADHESIVES; CHEMICAL PAINT OR INK REMOVERS; CHEMISTRY; COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS; COMPOSITIONS BASED THEREON; CORRECTING FLUIDS; DYES; FILLING PASTES; INKS; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; ORGANIC MACROMOLECULAR COMPOUNDS; PAINTS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; POLISHES; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF MATERIALS THEREFOR; WOODSTAINS

The invention discloses a preparation process and application of modified polyester resin, and belongs to the technical field of polyester resin, the preparation process of the modified polyester resin comprises the following steps: firstly, preparing the modified polyester resin from modified dihydric alcohol prepared by the invention, terephthalic acid and adipic acid under the catalysis of dihydroxybutyltin chloride; the prepared modified polyester resin is applied to preparation of the powder coating, modified dihydric alcohol is obtained by improving the structure of polyhydric alcohol in the polyester resin, the purpose of improving the glossiness of the powder coating is finally achieved, the mechanical property and the adhesive force of the coating are remarkably improved along with improvement of the glossiness, and therefore the powder coating can be applied to preparation of the powder coating. The preparation process and the application process provided by the invention have positive popularizatio