The Cleaner Production Technics Of UV Coatings

Currently, the coating industry has already become the importance part of the chemical industry, also become the "rich pollution industry" that is paid attentiont by people. To reduce the risk of the mankind and the environment." It included two process controls:One is the whole process of product the other is the produce's whole life cycle .To the process of production , cleaner production include reduce the amount of material and energy,eliminate poisonous and harmful materials, and before the waste leave the production line reduceand exchange at best. To product, cleaner production aim at reducing the whole life cycle of product, include the whole process of the raw material to product is destroied.Because of it I choice the UV coating to my researching object.the UV coating actions new environmental protection type coating, having the character of highly energy utilization quickly solid turn speed,have no organic compound toward the atmosphere etc. Because of it the UV coating is replacing the traditional coating gradually.the technic of radialization.But because it appear of time is not long still existnumerous factor check and supervisions to wear its further development: 1 economy,the basic material of UV coating price is high.2,because the product pitchy is hard cause to construction is greatly difficulty.3,toxicity(to the stimulative of the skin) 4,the coating is in the production line because the craft isn't mature, producing a great deal of waste water with very high COD to bring very great influence to the water environment.Aim at an above existent problem, this text exploitation cleaner production and the theories of green chemistry put forward a set of solution, and got a verification in the experiment in lab.The hydroxyl propylene diethylene glycol dinitrate modified amino resin is one kind of performance outstanding becomes the membrane resin. Mainly uses in the ultraviolet ray solidification coating and the printing ink production, has become the UV solidification coating mainly to become the membrane resin. However the existing amino resin still included 0.5% drifted away the formaldehyde. Can produces to operator's eye and the upper respiratory tract stimulates, seriously affects production personnel's health. The research uses the sodium bisulfite saturated solution and drifts away the formaldehyde production stable addition compound under the neutral condition, under the anhydrous condition, becomes the crystallization to precipitate is separated. In the final product drifts away the formaldehyde content to be possible to be lower than 0.05%, effectively solved drifted away the formaldehyde in the UV...