China's synthetic rubber industry additive raw materials and production technology development

Morpholine is an important output of more heterocyclic compounds, the major industrial synthesis of two routes, one strong acid diethanolamine dehydration method: Second, diethylene glycol solution of ammonia catalytic ring of law. At present, the major domestic and international adoption of more advanced route II. 9O home only during the past several sets of small-scale production, with China in the early 1990's rubber industry in particular, the rapid development of the tire industry, to stimulate and promote the right-industrial production and application. Morpholine the past few years China has become the hot spot fine chemical products, and many scientific research institutes of its synthesis technology to do a lot of research, propaganda and media Morpholine have broad market prospects, you set off home-building boom of China's right -Not only in the number of products, a greater leap in quality, synthetic technology has made great progress, a major manufacturer Wu Yuan Chemical Co., Ltd. in Anhui Province, Qingyuan County, Liaoning Chemical Plant, Jiangsu Lishui chemical plant, the total chemical Shandongdongping Factory, Jilin Changshan fertilizer, oil Liaoyang Chemical Fiber Company chemical plant experiments, and so on more than 10 companies.

In order to able to Morpholine raw material for dozens of synthetic drugs such as painkillers, local anesthetics, agents and the town of seizures and respiratory stimulants, such as blood vessels, mainly used in China morpholine synthesis Morpholine AG, cloth-fun network, naproxen, Dichloroaniline, NaPA, and so on, as a result of these drugs are traditional medicines, increasing market demand can not be too fast.

Morpholine as metal corrosion inhibitors, mainly for iron, copper, zinc, lead metal corrosion rust-proof, and can also be used in solvents, surfactants, fluorescent whitening agent, catalyst and auxiliaries in areas such as the above In the field of domestic still in its infancy, these areas are growing market demand.

Morpholine at home and abroad for synthetic rubber vulcanization accelerator N-linked oxygen II ethylene -2 - benzothiazolyl times sulfonamide (accelerator NOBS), 2 - (4 - Morpholine-dithio) benzene Thiazole and (promoter DS), N-diethyl oxygen joint second sub-S-N carbamoyl United oxygen at the Second Asia-methyl-ethyl (promoter OTOS) and 2 - (2,6 - dimethyl -- 4 - Morpholine-S) benzothiazole (promoter 26), which used synthetic NOBS, 20 centuries before the age of 90 developed countries and regions in Europe and the United States and Japan promoter rubber consumption accounted for Morpholine 50% of the total demand Above. At present, China Morpholine consumption for more than 50% of the synthetic promoter NOBS.

In recent years, some of the international promoter in rubber ann-_ in the process. Easy to produce harmful nitrosamines promoter of the toxicity of the growing problem of great importance, the formation of nitroso compounds, such as the impact of research in the world rubber accelerator in the field of hot topics, the study shows that N-nitrosamines by the secondary amine with The reaction of nitrogen oxides produced in the rubber vulcanization process. To secondary amine (such as morpholine, Diisopropylamine, etc.) based on the promotion of curing agent after the break with the secondary amine in the air or agent with the nitrogen oxides to form N-nitrosamines, will be generated by DNA-nitrosamine Base, there is the possibility of eventually induced cancer, in view of the world, many restrictive laws and regulations were introduced, one after another and will have to stop using the N-nitrosamines TBSI. 1997 Beijing Rubber Research and Design Institute analysis determined that the tires in Europe and the United States has captured less than Morpholine residue traces, which will have to confirm some of the nitrosamines as NOBS, and other promoters in Europe and the United States no longer used. Therefore Morpholine foreign consumption with the accelerator NOBS disable the decrease year after year. China also did not formulate the relevant laws and regulations to promote disabled NOBS, but with the large number of foreign capital into the Chinese tire, they need local auxiliaries, also called for the promotion of China's rubber-based environmental protection agent.

As a result, the use of agents to promote drug-free alternative promoter NOBS has become the trend of the times, China's demand in recent years, NOBS decreased, according to the country's rubber chemicals "Tenth Five-Year" plan, by 2005 China will have a basic non-use of decomposition nitrosourea The secondary amine-promoter if the accelerator NOBS banned in China stopped production, while right-production and the market could be serious.

There are many reports on the new business plan Morpholine devices by 2005 if China's ban on the use of agents to promote NoBS, therefore Morpholine oversupply situation will be very clear, and many foreign countries have long since banned the promotion of toxic agents, the right Also-with varying degrees of excess, not imported products from China, Morpholine worrisome prospect, so great efforts to develop the lower reaches of the morpholine products and applications is critical.

At present, many of our Morpholine device does not produce high-purity of the agent used to promote products, so in the future to carry out technical transformation of the production of high purity level of medical products, and promote the development of medical products. Do a considerable proportion of foreign-used metal corrosion inhibitors, metal gas as a major inhibitor to prevent the corrosion of metals in the atmosphere, our country has just begun and we do abroad as a metal-air anti-corrosion agent has been widely used mechanical instruments, automobiles, medical And military equipment in areas such as the current use of metal in the atmosphere at home and abroad the main inhibitor Dicyclohexylamine nitrite and carbonate cyclohexylamine to human and environmental toxicity of the larger, VCI restricted the promotion and application of the agent, and it As a gas-liquid-metal corrosion inhibitor has the advantage of low toxicity, the development of better prospects.

Along with the development of the petrochemical industry, it will be production-quality low-cost raw materials, Morpholine price drop, will help in the application of metal corrosion. In addition it can also be used to pH-regulator, gas absorbent, and synthetic herbicide, and so on, should also step up domestic development and research efforts to promote the consumption of morpholine and development. An area of particular concern Morpholine downstream products N-formyl morpholine, N-diethyl-right, ethanol Morpholine, N-propylene-Morpholine, N-methyl morpholine, N-amino morpholine, 4 -- (2-aminoethyl) morpholine, 2 - hydroxy -3 - naphthoic acid - (3 - Morpholine) - C-, and so on, as well as some of the derivatives are being developed, such as methicillin-N - -Morpholine, 1,4 - Morpholine -3 - F p, 2, 4 - Morpholine -3 - aniline fluoride, the right-diethyl ether, acid, such as morpholine.