PP dispersions are dispersions of polypropylene (PP) polymer in a liquid medium. They are typically produced by dissolving PP in a solvent, such as xylene or cyclohexanone, and then dispersing the resulting solution in water using a surfactant or emulsifier.
PP dispersions are used in a variety of industrial applications, including coatings, adhesives, and textiles. In coatings, PP dispersions can provide improved scratch and abrasion resistance, as well as enhanced adhesion to substrates. In adhesives, PP dispersions can provide improved bond strength and flexibility. In textiles, PP dispersions can be used as a coating to impart water and oil repellency.
PP dispersions can also be used as a binder in the production of non-woven fabrics, which are used in a variety of applications, such as filters, medical dressings, and wipes. In this application, the PP dispersion is mixed with other fibers, such as polyester or rayon, to form a web-like structure that is then bonded together using heat and pressure.
Overall, PP dispersions offer a versatile and cost-effective way to incorporate PP polymer into various industrial products and processes.
VAE dispersion as alternative
VAE dispersions might be considered as alternative to PP dispersions. VAE is made from Ethylene and VAM, produced at relatively low cost and a very good stability. Standard VAE dispersions are water solluble and thermoplastic. In case it’s necessary, VAE dispersions can be crosslinked.