A kind of hydroxyl-terminated branched polyester resin and its production equipment

Abstract

The invention discloses hydroxyl-terminated branched type polyester resin. The hydroxyl-terminated branched type polyester resin is prepared from raw materials in parts by mass as follows: 2-butyl-2-ethyl-1,3-propanediol, hydrogenated bisphenol A, 2,2,4-trimethyl-1,3-pentadiol, trimethylolethane, tetrabromophthalic anhydride, 1,4-cyclohexanedicarboxylic acid, isophthalic acid, an antioxidant, an organic tin catalyst and a solvent. The invention further discloses production equipment of the hydroxyl-terminated branched type polyester resin. The prepared hydroxyl-terminated branched type polyester resin has good wear resistance, water resistance, weather fastness and flame retardance, an automatic feeding device in the production equipment of the hydroxyl-terminated branched type polyester resin can perform automatic feeding, so that not only is labor intensity of a worker reduced greatly, but also production efficiency is improved; due to the fact that most raw materials belong to solidpowder, the raw materials can be mixed uniformly in advance by the automatic feeding device, the reaction of the raw materials can be more complete, the polyester resin with uniform quality is obtained, and product quality is improved.

Description

technical field [0001] The invention belongs to the field of polyester resins, in particular to a hydroxyl-terminated branched polyester resin and production equipment thereof. Background technique [0002] Polyhydric alcohols and polybasic acids undergo polycondensation reactions, and the resulting polymer macromolecular main chain contains many ester groups. This kind of polymer is called polyester resin. It is mainly used in the coating industry. The application of polyester resin is becoming more and more The more widely, but the performance of polyester resin is still in the process of continuous improvement, especially the wear resistance, water resistance, weather resistance and flame retardancy of polyester resin need to be improved. In the process of producing polyester resin, generally Both require manual feeding, which is labor-intensive and greatly reduces production efficiency. Contents of the invention [0003] The purpose of the present invention is to over...

AI Technical Summary

Problems solved by technology

[0002] Polyhydric alcohols and polybasic acids undergo polycondensation reactions, and the resulting polymer macromolecular main chain contains many ester groups. This kind of polymer is called polyester resin. It is mainly used in the coating industry. The application of polyester resin is becoming more and more The more widely, but the performance of polyester resin is still in the process of continuous improvement, especially the wear resistance, water resistance, weather resistance and flame retardancy of polyester resin need to be improved. In the process of producing polyester resin, generally Both require manual feeding, which is labor-intensive and greatly reduces production efficiency

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