WSD PVC stabilizer and many types of different combinations

PVC stabilizers, and many different types of combinations , generally can be divided according to the chemical composition of the lead salt , metal soaps ( such as stearic acid metal soaps, including barium, cadmium , calcium, lead and zinc soaps , etc. ) , organic tin epoxy esters and chelating agents ( such as phosphorous acid ) and the like. Currently, lead salt stabilizer is still the largest amount of a stabilizer . 1999 in North America , Western Europe, Japan, the consumption structure of heat stabilizers are listed in Table 1-1. Lead salt stabilizer total heat stabilizers PVC stabilizer in the share , with the countries and regions vary. 60,50 and 17% , accounting for the total heat stabilizers Western Europe, Japan and North America lead salt stabilizer. In these products , a product can be made into powder, granular, flake and pellets can melt and the like. " A package " is likely to exist between the additive type product synergies , thereby enhancing the stability of results, and eliminates the need for cumbersome calculation for each additive , easy to use and store the user , but also to reduce waste of resources and environmental pollution . Representative products in foreign markets have AKGros of Interlite series. Development of rare earth and composite metal soaps such as non-toxic stabilizer is one of the development trend of heat stabilizer industry internationally . 1999 in North America, Western Europeplastic processing aid and Japan, consumption of heat stabilizers were about 8, 16 and 70 thousand tons / a, a total of about 310,000 t / a, is expected to demand in 2004 in North America and Western Europe, heat stabilizers are 10 and 170,000 tons in 1999 to 2004 , the average growth rates of 4.2% and 1.0%. Japanese demand is maintained at about 70,000 tons . Lead salt heat stabilizer below the average growth rate of demand growth or negative growth trend, and composite ( especially toxic Ca / Zn) heat stabilizers demand growth higher than the average growth rate , the reason is that strict environmental regulations worldwide technology , national attention to the environment due to human survival . Due to the global limit toxic heavy metal salts used in PVC processing , product adjustment to accelerate the pace of new products , development of new formulations of very active.