Water-dispersible polyester resin is soluble in water, making it an ideal choice for water-based coatings, adhesives, and paints. This article will focus on the properties and applications.
Properties of Water Dispersible Polyester Resin
Water-dispersible polyester resin is a thermoplastic polymer that is the polymerization reaction of PTA and EG. The resulting polymer has a linear chain structure with pendant carboxyl groups. This carboxyl group makes the resin highly hydrophilic, allowing it to dissolve easily in water. The solubility can be changed by varying the molecular weight of the polymer, the type and amount of diols used, and the degree of cross-linking. One of the key properties of this water-based resin is its excellent film-forming ability. When dissolved in water, the resin can be easily applied to a surface using a variety of methods, including spraying, brushing, or rolling. Once the water evaporates, the resin forms a thin, transparent film on the surface. This film has excellent adhesion, flexibility, durability, and even waterproofness. Another important property is its compatibility with a wide range of additives. The resin can be easily modified by adding pigments, fillers, plasticizers, and other additives to suit specific applications. For example, the addition of pigments can give the resin a specific color, while the addition of plasticizers can improve its flexibility.
Applications of Water Dispersible Polyester Resin
1. Water-based coatings are used in a range of applications, including automotive, construction, and industrial coatings. The resin provides excellent film-forming ability, adhesion, and durability, making it an ideal choice for these applications.
2. Water-based adhesives are used in paper and packaging, textiles, and construction. The resin provides excellent adhesion and flexibility
3. Water-soluble polyester resin is used in the production of water-soluble fibers and yarns. These fibers and yarns are used in a range of applications, including medical textiles, embroidery, and lace. The resin provides excellent dyeability and compatibility with other fibers.