Medium molecular polyisobutylene usually refers to the molecular weight of 10,000 to 100,000 isobutylene polymers. The early technology is catalytic polymerization of aluminum series, which has already been industrialized. Up to now, the more advanced catalytic polymerization technology of boron system has been mature. Shandong jinlin chemical co., LTD., which has adopted the new technology and realized industrialization, has been successfully applied. According to the company in addition to catalytic system adopting new technologies, in the heat polymerization from pattern, washing method and have significant technical improvement, to take off the wave mode makes the molecules of a domestic polyisobutylene a level that the quality of the products, has reached the level of similar foreign products, the market feedback is good, so the molecules of a domestic polyisobutylene technology is mature, reached the international advanced level.

Medium molecular polyisobutylene is widely used in adhesive, food additive, waterproof material, oil modification, electrical, pharmaceutical and other industries. However, due to the restriction of consumption concept, economy, quality, environmental concept and habit, China's application market is not developing fast. At present, the application market is mainly concentrated in the sealant and food additive industry, and there are few applications in other industries. In the past few years, the rapid development of China's construction industry has driven the development of hollow sealant and the demand for medium molecular polyisobutylene. In recent years, the growth rate has reached 20-30% a year, and the growth rate is relatively slow in recent years. According to the feedback from the market, the market capacity of medium-molecular polyisobutylene in China is basically between 12,000 tons and 15,000 tons. With the increase of domestic production capacity, the market supply and demand of medium-molecular polyisobutylene tend to be stable.

The consumer market is mainly the sealant, food additive industry, but the international market of molecular polyisobutylene downstream products (such as waterproof materials, modified materials) development is relatively good, so the demand increased. In recent years, the import volume of molecular polyisobutylene decreased from several thousand tons per year to several hundred tons in 2009, which can explain the two problems. Domestic molecular polyisobutylene has met domestic demand both in quantity and quality, and foreign products have lost competitiveness and faded out. The demand for foreign medium molecular polyisobutylene increases rapidly, and the market is in short supply. Therefore, the focus of foreign product market has been shifted. Regardless of the two factors which are the main, in the domestic market saturation has appeared in the situation of international market demand, in the original molecule polyisobutene by import import hundreds of thousands of tons to 2009 tons per year is exported 1024 tons (1 - November), account for the change of the domestic and international market, according to market feedback, export quantity will increase in 2010.

Throughout the medium molecular polyisobutylene industry, the domestic industrial layout has been completed, and the production capacity has been able to meet the domestic demand. Product development direction should focus on technical progress, from the improvement of polymerization process, before and after the adoption of new technology to improve the internal quality of products. In terms of market development, we should focus on the international market, increase different molecular weight series of products, endow Chinese molecular polyisobutylene with new properties, meet the needs of the international market, and expand the international market. In terms of industrial development, as the industrial layout has been completed and market competition has begun to take shape, it is not appropriate to repeatedly build equipment or blindly expand production capacity under the situation of raising the threshold for entry. Development direction should be increased in the molecule polyisobutene application market development efforts, joint domestic research strength molecule polyisobutene downstream products in development, makes the molecules of a domestic polyisobutylene application field is expanded, and promote the increase of the domestic consumer market, this is molecule polyisobutene industry in our country the only way for healthy and orderly development.