PROJECT DESCRIPTION
BACKGROUND
Aims of the project: to reduce organic volatile substances (voc) to respect the rapidly growing sensibility on environmental problems. The methods of development of the polyurethane bi-component water based paints for wood are characterized by a high number of tests capable of predicting, with almost absolute certainty, the reactions of the new paints after long periods of time. The perfectioning of a new series of products has also produced the need to analyze the raw materials and the combinations when using them, in order to guarantee high standards of chemical-physical and aesthetic qualities of the finished product. Following the successful results obtained, various application tests have been carried out in the laboratories of manufacturers of painting equipment and machinery, and the first pilot production has been tried. Critical areas for the success of these products: reduction of voc levels, in fact the sum of the emissions in the entire cycle could be below the 40g/m² predicted by the new european norms; less unpleasant odors compared to solvent containing coatings-the low pressure of solvent contained in the water based two component polyurethane is unlikely to cause concentrations of solvent laden vapors forming which can be dangerous from a toxic standpoint; the flash point of water based systems is over 55°C, which relieves the necessity of special precautions for both stocking and sales points. The expected results as per the quality of the new product: -The same physical and chemical characteristics currently found only in solvent based two component polyurethanes: good abrasion and chemical resistance, high scratch, scuff and mar resistance, and good transparency. -Ease of application, whether spray, roller coater or curtain coater. The versatility of two component polyurethanes is such that it is used in other sectors, such as plastics, fibreglass, composite materials, metals and even construction where a high level of presentation is desired