Лако-красочные материалы — производство

Bio-based adhesive resins have been under investigation for a long time; however, exten­sive industrial application, at least in Europe, has not yet occurred. The use and applica­tion of adhesives based on natural and renewable resources is often thought of by the industry as well as the general public as a new approach that requires novel technologies and methods to implement. Despite the increasing trend toward the use of synthetic adhesives, processes based on the chemical modification of natural products offer oppor­tunities for producing a new generation of high performance, high quality products. The distinct advantages in the utilization of natural materials, e. g., lower toxicity, biodegrad­ability, and availability, need to be paralleled by more efficient and lower cost methods of production. Factors such as regional and species variation have to be considered in select­ing the optimum feedstock for a particular process; additionally cost-effective manufactur­ing techniques have to be developed that will enable these materials to capture a wider percentage of the world market. Manufacturers need to have confidence that a continual uninterrupted supply of raw material can be sustained throughout the life cycle of a product. It is of equal importance that the feedstock should not be restricted by geogra­phical and climatic conditions or that yield should not dramatically vary when harvested in different locations and at different times of the year. The key to an increased usage of natural products by industry is in the control of the above variables so that the end performance by the industry remains consistent [227].