Rubber chemicals raw material production and application of resorcinol

Resorcinol is an important organic chemical raw materials fine. Widely used in agriculture, dyes, paints, pharmaceuticals, plastics, rubber, chemicals, electronics and other fields. Resorcinol industrialized There are two main methods of synthesis, one base Sulfonated molten-law, resorcinol is a traditional production methods. Simple process, low investment and technology mature, but the use of a large number of strong acid strong base, serious corrosion of equipment, waste pollution is serious, the lower yield. The second is between dicumyl oxidation. Law-the-art technology, small pollution. The higher the yield, but highly technical, and a larger investment on equipment under certain requirements in today's increasingly stringent environmental protection. Between the two is the oxidation Cumene resorcinol synthesis of development. Synthesis of a longer route because of resorcinol, technical difficulty of relatively large, it has long been home only a chemical plant in Nanjing petrochemical installations in 1998 to expand the size. At present, for 2kt / a, 2002 Domestic Nantong, Rudong resorcinol new chemical plant. Both sets of devices using the traditional p-sulfonated alkali fusion method of production, not only in China resorcinol production is small and serious environmental pollution, particularly in backward technology, the United States than in the same line of devices to low-yield 7-8% , The appearance of the product, stability and purity of all there is a big gap.
China's main resorcinol adhesive used for the production of rubber and timber resin adhesive Jing, and other less consumption. A domestic product between one of the main adhesive resin used in tire cord fabric used in the industry dipped. In 2002 China's total output of nearly 200,000 cord t. States in 2010 to require the auto industry into a pillar industry in China. With the great development of China's automobile industry, China's tire production has leapt to second in the world. 2001 to reach annual production of 81,000,000 units, China's tire production in the future there will be greater room for development, thus rubber on the steady growth in demand for resorcinol. With the recent recovery in the domestic construction industry, in particular the introduction of housing reform policy, a rapid increase in housing construction, housing construction materials and decoration materials, a significant increase in demand, stimulate consumption of wood dry mixture. In 2001 consumption of wood adhesive resorcinol is about 1050t, the other UV absorber, medicine, pesticides, dyes, etc., will consume a large number of resorcinol. Domestic resorcinol also a big potential market, that is, between paracetamol production, between paracetamol is an important organic intermediates, particularly as a function of the dye materials, with good prospects for the development of our country is about Paracetamol major producers and exporters, while China is still using the traditional p-sulfonated alkali fusion method, serious environmental pollution, facing out. Use resorcinol production is a general trend. If the domestic production of nitrogen use resorcinol-Aminophenol resorcinol consumption will increase. Along with the rapid development of rubber industry. China's annual needs resorcinol has been in short supply a certain number of imported products to meet domestic market demand, to maintain the basic stability of the domestic production. In the late 90's, the international market resorcinol tight supply, combined with domestic and foreign price gap to a certain extent. Therefore, the period of domestic imports relatively more stable. At present, domestic prices have been a very small space, resorcinol domestic industry is facing a huge impact on the production and sale of certain difficulties at a time when domestic and resorcinol a new device, so our resorcinol industry challenges How can the international market prospects are not optimistic about the increase in domestic capacity, out to increase competitiveness, resorcinol industry has become a top priority.