PVC Coating

Applied to the surface to form a continuous solid film, the material has a protective, decorative or other special functions called paint. Formerly known as paint coatings, originally based on vegetable oil as the main raw material production. With the development of polymer materials, many of the synthetic resin is used as the film material, is beyond the scope of the paint, it was renamed coatings.

PVC coating is a non-PVC plastic purposes, it can be said that a special field of use of PVC. PVC coating into solvent-based paints, water and milk-based paints and powder coatings. In order to adapt the processing properties (solubility) and performance (adhesiveness) of the request, usually specially dedicated PVC resin, such as low molecular weight PVC suspension resin, a resin emulsion, solution or bulk resin, the resin, vinyl chloride resin, , vinyl chloride copolymer resin. Wherein the vinyl chloride copolymer resins are vinyl chloride – vinyl acetate copolymer resin, vinyl chloride – vinylidene chloride copolymer resin, and vinyl chloride – acrylonitrile copolymer resin. Especially vinyl chloride – vinyl acetate copolymer resin is most important. It also includes a vinyl chloride – vinyl acetate copolymer resin, vinyl acetate, partially hydrolyzed, and (or) by adding a small amount of other copolymerizable monomers as maleic anhydride, acrylic acid esters, or the like containing a hydroxyl group, a carboxyl group and a chlorine vinegar (or) an ester group or a ternary four yuan copolymer resin.

PVC resin coating process typically first formulated resin is dissolved in a suitable solvent solution. In addition to meeting a wide choice of solvent source, inexpensive, safe and low toxicity general requirements, from the dissolution performance point of view, the choice of solvent usually follow the principle is similar to the principle of compatibility, solubility parameter similar principles and mixed solvent soluble compatibility in principle. PVC is normally added to the coating processing plasticizers, stabilizers, pigments, fillers, modifiers, wetting agents, thickeners, diluents, thixotropic agents, and defoamers.