Domestic production enterprises, production capacity and present situation of cross-linked polyvinylpyrrolidone

The production and application of PVP in China started late. Since 1987, the production, development and application research of PVP have been very active and developed rapidly since the industrial production of PVP was first realized by Aibo Kaiyuan Fine Chemical Factory in Henan Province (now renamed as Aibo New Kaiyuan Pharmaceutical Co., Ltd.). In recent years, the number of domestic manufacturers has gradually increased, making China one of the few PVP producing countries in the world. Especially with the successful development and popularization of gas phase hydrogenation of maleic anhydride and dehydrocyclization of 1, 4- butanediol to produce r- butyrolactone in China, the output of GBL has increased year by year, which also provides a raw material basis for PVP production.

Major PVP manufacturers and products in China: 1) Aibo New Open Source Pharmaceutical Co., Ltd.: The leading products are PVP K series products (K 12, K 15, K 17, K25, K30, K60, K90, K/kloc-0. 2) Hangzhou Southern Airlines Industry and Trade Co., Ltd.: The leading products are 2- pyrrolidone, PVP K series products (mainly K30), PVP*** polymer (PVP/VA) series products, PVP I, cross-linked polymer PVPP, etc. 3) Hangzhou Shenhua Technology Co., Ltd.: The leading products are PVP K series products, PVP/VA*** polymers and PVP-I 4) Other domestic manufacturers: Anhui Haifeng, Jiaozuo Yuanhai, Jiaozuo Meida, etc. The products are relatively simple, mainly PVP K30 and PVP-I, and the PVP output of domestic production enterprises in 2006-2008 is shown in Table 2 below.

Table 2 Summary of actual domestic PVP production in 2006-2008: tons of major domestic manufacturers in 2006, 2007 and 2008, Boai New Open Source 1000 1500 2000 Hangzhou Southern Airlines 1200 1700 Hangzhou Shenhua. 400 400 500 Other manufacturers 600 700 800 Total 3300 4000 5000 From the statistics in Table 1 and Table 2, it can be seen that China's products account for less than 10% of the world's total PVP production in recent years. However, with the gradual expansion of domestic PVP production enterprises (from 3,200 tons to 5,000 tons in 2006-08), the continuous improvement of product quality and the continuous increase of market share (from 7.27% to 9.8% in 2006-08), China PVP industry should still have great development space and prospects. With the continuous expansion of domestic production capacity of 1, 4- butanediol and r- butyrolactone in recent years, it provides rich raw materials for the production and development of PVP, making it possible to further develop PVP series products.