Polyisoprene latex is prepared from polyisoprene rubber, emulsifier, stabilizer and a small amount of antioxidant. It is a water-based emulsion of polyisoprene rubber. It has the characteristics of high tensile strength, high elongation at break, strong mechanical stability and chemical stability, and is not easy to cause skin allergy. It can be used in the production of surgical gloves, condoms, dental rubber barriers, physiotherapy tapes, catheter and other products. It can also be used as high-end adhesive and cold sealing adhesive for food packaging. At this stage, due to the high price of polyisoprene latex, it is mainly used for surgical gloves and other medical grade high-end medical and health products.

In industry, enterprises mainly use rare earth catalysts or lithium catalysts to prepare polyisoprene glue and then emulsify and desolvate to prepare latex, that is, polyisoprene rubber is used as the basic raw material, and polyisoprene latex is prepared by four processes of dissolution, emulsification, desolvation and concentration. Using this method to prepare polyisoprene latex, the mechanical properties of the latex mainly depend on the properties of polyisoprene rubber.

From the perspective of polyisoprene latex production, according to the "2023-2027 China Polyisoprene Latex Industry Market Monitoring and Future Development Prospect Research Report" released by the Xinsijie Industry Research Center, in the early years, the domestic polyisoprene latex industry has always been in a backward state due to the development restrictions of the polyisoprene rubber industry. In recent years, driven by Beijing Lin's refined new materials Co., Ltd., China Petroleum & Chemical Co., Ltd. and other enterprises, domestic polyisoprene latex has achieved mass production, with an annual output of about 3000-5000 tons.

In terms of new capacity, Cariflex, one of the world's largest suppliers of polyisoprene latex, announced in 2022 that it would invest US $0.35 billion to build the world's largest polyisoprene latex plant in Jurong Island, Singapore. The plant will be put into operation in 2024, and the Califlex polyisoprene latex production capacity will increase by 50% to 300000 tons.

From the demand side of polyisoprene latex, polyisoprene latex properties similar to natural latex, does not contain any protein, suitable for the production of products in contact with the human skin, such as surgical gloves, condoms, etc., and polyisoprene latex can be a good solution to natural rubber products caused by human allergy. At this stage, the annual consumption of natural rubber latex in the world exceeds 2 million tons. As a substitute for natural rubber latex, polyisoprene latex has a large space to replace natural rubber latex.

New sijie industry analysts said that polyisoprene latex is the best choice to replace natural latex. in recent years, domestic research on polyisoprene latex has gradually increased. in addition to Beijing Lin's refined new materials co., ltd., Zibo luhua hongjin new materials group co., ltd., Shanghai shengda medical insurance co., ltd., Shanghai celebrity sanitary products co., ltd. and other enterprises have also published patents related to the preparation method and application of polyisoprene latex, it provides a good technical environment for the development of domestic polyisoprene latex industry.

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