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Plasticizers are the largest class of plastic additives in terms of quantity, output and consumption. At present, the total global plasticizer production capacity is about 7.5 million tons/year, and the global plasticizer production is 5.9 million tons/year, of which North America accounts for 22%, Asia-Pacific accounts for 38%, Europe accounts for 25%, and other regions account for 15% . PVC is the largest user of plasticizers, accounting for 95% of the total global plasticizer consumption and slightly more than 90% in North America. Polyolefins, styrene, engineering plastics, polyvinyl butyral and cellulose are used in very small amounts. In the plasticizer market, phthalates account for 69%, followed by aliphatic 8%, epoxy 7%, trimellitate 4%, and others 2%.
Because plasticizers are closely related to the very mature soft PVC market, the development is slow, but maintains a steady growth momentum, which is expected to grow at an average annual rate of 2.5%, reaching 6.1 million tons in 2009.
At present, the production trend of plasticizers is developing towards large-scale, continuous and computer-controlled development, and the production capacity of a single set has reached more than 100,000 tons/year. Multi-variety serial production has the characteristics of strong adaptability to the market and large production flexibility to meet the needs of different plastic processing products for special functional plasticizer varieties. Due to the better cost performance of DOP, the output and consumption still dominate the phthalate esters, followed by DINP (diisononyl phthalate), DIDP (diisodecyl phthalate), and direct The development of chain alcohol esters is also fast, and it is expected to become an important variety of phthalates. In addition to phthalate plasticizers, fatty acid esters with excellent cold resistance, epoxy esters with strong non-toxic stability, high temperature-resistant trimellitic esters, non-migrating polyesters, flame retardant Phosphate esters with good properties all account for a certain proportion in the plasticizer structure, forming a plasticizer production system with a reasonable structure. )
Heat stabilizers. Heat stabilizer is one of the important categories of plastic processing aids. The birth and development of heat stabilizer and PVC resin are synchronized. They are mainly used in the processing of PVC resin. Therefore, the ratio of heat stabilizer to PVC resin and soft and hard products in PVC is close relationship. At present, the global annual consumption is about 500,000 tons, and the main varieties are lead salts, organotin, metal soaps, composite stabilizers and organic additives. The consumption structure of heat stabilizers varies from country to country. In the United States, composite stabilizers account for 40%-50% of the total consumption, and organotin accounts for nearly 40%. Among heat stabilizers, cadmium-free, low-lead, dust-free and lead-free replacement have become the focus of the industry's development. The strict requirements of environmental protection regulations are driving the change of heat stabilizers. In order to protect the living environment of human beings, many countries have passed laws to restrict the application of toxic heavy metals in PVC processing. European PVC heat stabilizer manufacturers have made commitments that the amount of lead-containing heat stabilizers will be halved by 2010, and lead-free will be fully realized by 2015. Many countries in Europe are using organotin-based or calcium-zinc-based alternatives instead. European lead stabilizer consumption will be reduced from 120,000 tons/year in 1999 to 80,000 tons/year in 2010. The demand for lead-based heat stabilizers in the Asia-Pacific region is also expected to decrease significantly. New stabilizers, including organotin-based systems (OBS), have become widely available in the United States.