A kind of polymer water-based polyester and preparation method thereof

Abstract

The invention discloses a polymer water-based polyester, which is composed of terephthalic acid (PTA), isophthalic acid (IPA), ethylene glycol (BG), diethylene glycol, three monomers, catalysts and other auxiliary agents As a raw material, it is synthesized with mother liquor through esterification and polycondensation. The preparation method is as follows: firstly, phthalic acid (PTA), isophthalic acid (IPA), ethylene glycol (BG), diethylene glycol, and three monomers Make a slurry, and then use a metering pump to evenly send it into the esterification tank and add a catalyst to carry out the esterification reaction. The monomers generated by the esterification reaction are added with additives and then filtered into the polycondensation tank for polycondensation reaction. When a certain process value is reached , Pressed out with nitrogen, and then cooled, pelletized, dried, and screened to obtain a transparent polyester product. The polymer water-based polyester of the present invention replaces traditional acrylic esters, vinyl acetate products, and non-environmentally friendly urea-formaldehyde resins and cyanamide resins, and has a series of advantages such as excellent adhesion, high molecular weight, and good environmental performance, and can be used as a textile Hardeners are widely used.

Description

technical field [0001] The invention relates to the field of polyester, in particular to a high-molecular water-based polyester mainly used in daily chemical products, especially a stiffening agent for textile materials, and a preparation method thereof. Background technique [0002] Stiffening finishing is a kind of fabric post-finishing. It makes the fibers in the fabric yarn bond under certain conditions by padding the stiffening agent. The stiffening agent forms a film or Produce cross-linking, so that the fabric has a stiff, thick and plump feel. It is widely used in the finishing process of decorative fabrics, especially the stiffening of curtain fabrics, bag fabrics, warp knitted fabrics and interlinings. [0003] The existing stiffeners commonly used are polyacrylate, polyvinyl acetate, urea-formaldehyde resin or cyanamide resin. The quality of these existing stiffeners is unstable, and there are defects such as low molecular weight, poor chemical resistance, and ex...

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Problems solved by technology

[0003] The existing stiffeners commonly used are polyacrylate, polyvinyl acetate, urea-formaldehyde resin or cyanamide resin. The quality of these existing stiffeners is unstable, and there are defects such as low molecular weight, poor chemical resistance, and excellent stiffening effect. , the production process is not environmentally friendly, especially the production of urea-formaldehyde resin and cyanamide resin causes serious pollution to the environment and affects people's lives

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