Development History of Chloroprene Rubber Factory Suppliers Manufacturers Quotes

Development History of Chloroprene Rubber

Chloroprene rubber has excellent weather resistance, ozone resistance, chemical corrosion resistance, oil resistance, and its comprehensive physical and mechanical properties are also good. The tensile properties of chloroprene rubber are similar to those of natural rubber. Its weatherability and ozone resistance are second only to those of EPDM and butyl rubber, and its oil resistance is second only to that of NBR.

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Development history of chloroprene rubber abroad

In September 1934, DuPont first changed its emulsion polymerization process. In 1937, after the advent of sulfur regulated CR (G), CR was officially called Neoprene in 1938. The original CR is expensive, and the price ratio of NR is as high as 75:5 (cents / lb); therefore, almost all military.

The CR production plant was built in Yerevan, Armenia in 1933, the pilot test was carried out in 1934, and the CR industrial plant of 2000 tons per year was built in 1940.

Only in 1950 did Bayer value CR and decided to develop it. In April 1957, Bayer industrialized its CR production technology. At that time, the product was called Perbunan C, which was produced by continuous polymerization process.

In 1960, Japan Electric Chemical Industry Corporation began to study CR production process, and set up a pilot plant with a monthly output of 1 ton. In July 1962, CR was industrialized for the first time (200 tons/month). The product was named Denka Chloroprene.

In June 1971, Dongcao Company built a 6000 ton/year CR plant in Xinnayang, Tokushan, Japan, using butadiene chlorination technology, and then expanded it to 20000 tons/year.

Development history of chloroprene rubber in China

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The study on Synthesis of chloroprene rubber by calcium carbide acetylene in China was first carried out by Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, and a 5.4 ton/month test facility was built in Changchun in 1953.

In 1956, Chongqing Longevity Chemical Plant built a production plant of 2000 tons per year using the above scientific research achievements and the technology of the former Soviet Union, and put into operation in 1958. After the renovation and expansion, the production capacity reached 28 thousand tons / year.

In 1965, Shanxi Synthetic Rubber Group built a 2500-ton/year production plant for chloroprene rubber by carbide-acetylene process. The electrolyte coagulation technology was used in the post-treatment.

In 1966, the Qingdao Chemical Plant of Shandong Province built a calcium carbide acetylene production plant with a production capacity of 2500 tons per year. The electrolyte coagulation technology was also used in the aftertreatment.

In 1987, Longevity Chemicals, Shanxi Synthetic and Qingdao Chemical Plant introduced freezing condensation technology one after another, and the plant was revamped and expanded. The production capacity of Qingdao Chemical Plant after expansion reached 10,000 tons per year, but it was shut down and transformed in the late 1990s. After many renovations and extensions, the production capacity of synthetic chloroprene rubber in Shanxi reached 25,000 tons per year in 2001, and it was closed down in 2013.

In 2007, Shanxi Synthetic Rubber Group Co., Ltd. and Erit Company of Armenia jointly established Shanna Synthetic Rubber Co., Ltd. to build a chloroprene rubber production plant with an annual output of 30,000 tons/year, which was completed in December 2009 and put into production in May 2010.

In 2017, Chongqing Longevity Chemical Co., Ltd. will cooperate with Shanxi Changzhi Huojia Industrial Co., Ltd. to jointly build 40,000 tons/year chloroprene rubber plant, and introduce a third party to establish a joint venture. The joint venture will purchase 40,000 tons/year chloroprene rubber plant under construction by Huojia Industrial Co., Ltd. The new company will use the technology of Longevity Chemical Co., Ltd. With the combination of customer resources and the plant resources of Huojia industry, the resource integration of chloroprene rubber industry has been effectively realized or will be greatly developed. With the increasing production capacity of domestic chloroprene rubber, market competition has intensified, but it has always been the coexistence of opportunities and challenges, other enterprises still need to develop and grow to adapt to changes in the environment.

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