China's pesticide fine chemical intermediates have rapid development

February 2, 2012

Since the 1990s, China's pesticide fine chemical intermediates have rapid development. Now China has become the world's major producer and supplier of fine chemical intermediates.

1, 2, 4 - trichlorobenzene are widely used in the pesticides synthesis. They can synthesize the pesticides dicamba, mites sulfone, sodium pentachlorophenol, PCP, etc. In recent years, many courtiers are trying to develop its downstream product application. High purity 1, 2, 4 – trichlorobenzene become the popular fine chemicals and intermediates in international pesticide market, The early 1990s, the World 1,2,4 – trichlorobenzene mainly rely on ineffective body processed into mixed– trichlorobenzene,mixed trichlorobenzene production of about 50,000 t / a, as the disabled, and restricting the use of lindane, the traditional of trichlorobenzene dwindling raw materials, while developed countries and regions, the production of organic chlorine cautious, a lot of demand from developing countries to purchase, so the current global trichlorobenzene, 1,2,4 especially in high-purity - trichlorobenzene supply triphenyl bismuth. The current global 1, 2, 4 trichlorobenzene market demand of about 3.5 million over the next few years will be 10% of the average annual rate of increase. Foreign raw materials, production of organic chlorine reduction, the Chinese 1,2,4 - trichlorobenzene, the development of production provides a good opportunity for development. One of the most promising process route for the chlorination of p-dichlorobenzene and 2, 4 - dinitro chloro benzene chlorination, dichlorobenzene China has developed rapidly in recent years to provide high purity o-dichloro- the product. Also, China has become the world's largest pair, o-chlorinated benzene producer-product each year a large number of 2, 4 dinitro chlorobenzene, trichlorobenzene, China can provide high-quality rich low-cost production raw materials, China is currently in the process route has been able to produce.

O-cresol in the pesticide industry mainly for the synthesis of efficient herbicides, China is only a few producers of coking coal tar fractionation by the product, quality and quantity can not meet domestic market demand. O-cresol herbicide and pesticide intermediates downstream product demand is relatively stable. 2010 China's demand for o-cresol is about 1 million t / a or so, and imports increased year by year, mainly from Europe and Japan. Abroad, mainly o-cresol phenol alkylation continuous production, but China has successfully developed the phenol alkylation technology, which is the method associated key outputs 2,6 - dimethyl-phenol, the use of this technology development 5000t / a production unit.

Catechol is an important new type of low toxicity and efficient carbamate pesticide carbofuran, propoxur, Diethofencarb intermediates. Carbofuran is highly toxic organophosphate pesticide alternative low toxicity and high efficiency of the leading pesticide products; other non-absorption of propoxur pesticides, fumigation has a good effect, efficacy and dichlorvos close, but the toxicity is very low, is recommended by the world health organization and storage of pest control household pests in the varieties of Pharmacy. The product is long-term vacancies in China, after 2000, technology breakthroughs, there are two enterprises to build production plant with an annual production capacity of about 2000t / a. Catechol imports mainly from France and Italy. Catechol is produced by mainstream Chinese pesticide varieties of pesticides, pesticide industry, consumption of catechol in 2008 of about 8000t, 2010, the domestic market demand of catechol to 12000t / a of about. In 2002 China's imports of catechol originating in the EU anti-dumping measures taken, which gives catechol industry and opportunities.

Nonylphenol is a multi-purpose non-ionic surface active agent, is the largest in the alkylphenol products, petroleum chemical industry and organic synthesis industry, one of the most important intermediates. Excellent decontamination, wetting and penetration, dispersion, solubilization emulsifying properties 10-hydroxydecanoic acid, is widely used pesticide emulsifier. In recent years, rapid development of China nonylphenol, there are more than 10 manufacturers, with a total production capacity of about 60,000 t / a, but most of the production of poor product quality, and are subject to the constraints of raw materials and downstream products, the larger, Therefore, the operating rate of the production company a serious shortage.

M-cresol is mainly used for synthetic pesticides. In recent years, production and development of China-cresol downstream synthetic pesticides has broad prospects. The market demand for m-cresol will maintain an average of 8% to 10% of high growth. China has about 10 sets of production equipment produced m-cresol, due to technical and other factors, has less than 60% capacity utilization. M-cresol in the field of pesticides, steady growth in demand, domestic market demand in 2010 to 18200t / a of about. There are currently imported from abroad 7000t / a or so, mainly imported from the United States. In view of the Chinese market remains positive, the next medium-sized petrochemical producers can take advantage of isopropyl toluene own resources to build a million tons / year of toluene oxidation of isopropyl-cresol production equipment and technology to introduce the main technical sources to the United States-based companies, must pay attention to raw materials and downstream pesticide products matching problem. Source:http://www.mhcfm.com
 

Copper production of ultra-fine processing industry should force

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Copper is one of non-ferrous metals which is developed and used in early time. Copper powder (FCu) and its alloy have good conductivity, excellent thermal performance, beautiful color and decorative, strong antibacterial properties. While due to it is without toxic for human body, non-magnetic, chemical stability and good resistance to seawater corrosion and other prominent features, it becomes a very important foundation material of modern industry. It is widely used in electrical, light ind...


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Unique functions of nano collagen oligopeptide

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Recent science studies have shown that OCO is the era darling of cosmetics, biomedicine, health products, functional food, cosmetic and beverage areas. So, what is the OCO?

 

Nanometer active oligopeptide collagen, it is called as nano collagen in short. It is the small molecule fragments of collagen. It is composed of dipeptide (two amino acids by the condensation of peptides as two peptides), three peptides or seven peptides with bioactive nano-small molecule mixed oligopeptide. OCO's bas...


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Effectiveness and impact of the lens coating

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Why does the lens need coatings? Because any object has a reflection role for light, even colorless transparent glass has no exception. The difference lies in whether the angle of light will form a reflection effect. For the ideal state of the lens, the light can be completely through the lens and correctly focused in the film or CCD. However, the fact is that each of their lenses are subject to physical constraints, resulting in the generation of aberration, so many problems by the combinati...


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How to use the recycling bag in a right way

February 2, 2012

Currently, most of recycling bags in markets are made of non-woven. The main component of non woven is polypropylene. It also known as PP material. Molecular structure of polypropylene is not reliable than the polyethylene-chemical raw material of plastic bags far less. It can be decomposed in the form of non-toxic, but polypropylene is a petrochemical product, this material at room temperature or indoor environment is more difficult to degrade, in the outdoor environment also need about half...


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Frogs and toads have effect on curing the skin cancer

February 1, 2012

British scientists found that proteins of frogs and toads’ skin can treat cancer, diabetes, stroke and transplant patients with regulating the blood vessel growth.

The study identified two pharmaceutical raw materials: proteins or peptides, which can be used to control and targeting angiogenesis, thereby regulating the body's blood vessel growth. This discovery has great potential for development for the treatment of over a billion people worldwide involving more than 70 major diseases an...


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Destruction of China fluorine chemical industrial aims at fine chemicals

February 1, 2012

In recent years, China's fluorine chemical industry has been developing rapidly. It has emerged more than one thousand fluorine chemical industry. However, due to rapid development, problems of funds withdrawn from circulation and the shortage of innovative capacity, the current fluorine chemical industry is also facing many problems. It is an urgent need for industry and product structure adjustment, leading the industry to meticulous development.

The global financial crisis, China fluorite...


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Automotive industry brings opportunities for the development of powder metallurgy products

February 1, 2012

Since 2000, China's auto industry has continuous growth. In 2003, China produced and sold 4.44 million cars. The car ownership is 24.21 million. China has become the world's fourth major producer of cars. It is about 5.3 million car sales in 2004. In 2006, the number is 6.9 million. 2008 has 8.4 million cars and it is 9.8 million in 2010. Now the world's car production 40 million, of which China will account for 2.5 million cars. Stable at around 12 million motorcycles, household appliances s...


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Fish scales can not only beautify the futures but also supply calcium

February 1, 2012

Fish scales account for 2% to 3% in body weight. Scales are transparent in appearance and like petals. The edges are tiny curly with white luster. It has slightly fishy and ​​soft texture. Moisture content of scales is about 16.4% to 17.8% and the average rate is about 17.5%.

Nutritionists found that scales are special health food. It contains astaxanthin and more fat egg scales, there is increased brain memory, slow extension of cellular senescence. Fish is rich in phosphorus and prote...


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Lens coating is much fragile than what we imagine

February 1, 2012

If the lens is dropped into the water, it is better to cover the tail off, upside down on the desktop and make the water slowly evaporate. If the lens surface with a wet or greasy, we can use the lens cleaning cloth with warm water to gently circular motion from the inside to the outside was like swab sweeping movements. But it must be ensured that the zinc oxide lens does not show any dirt, otherwise it will cause very serious damage on the lens.

Therefore, usually the best use of the UV le...


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