DOP is a commonly used chemical raw material. Its full name is dioctyl phthalate. It is an environmentally friendly plasticizer and is widely used in plastics, rubber, chemical fiber and other industrial fields. This article will introduce in detail the production process, upstream and downstream products, usage methods, transportation and packaging.
1. Production process
The production process of DOP is mainly divided into three steps: esterification reaction, alcoholysis reaction and rectification separation. Wherein the esterification reaction is to carry out the esterification reaction of phthalic acid and 2-ethanol formate to generate diethyl phthalate. The alcoholysis reaction is to carry out the alcoholysis reaction of diethyl phthalate and excess 2-ethanol in the presence of a catalyst to generate DOP. Finally, the product DOP is purified by rectification separation.
2. Upstream and downstream products
The upstream products of DOP are mainly phthalic acid and 2-ethanol formate. Phthalic acid can be obtained by oxidation of xylene, while 2-ethanol formate can be obtained by the reaction of ethanol and formate. DOP’s downstream products are mainly plasticizers and lubricants in industrial fields such as plastics, rubber, and chemical fibers.
3. How to use
DOP is mainly used as a plasticizer for plastics and rubber, which can improve the softness, ductility and cold resistance of plastics and rubber. In addition, DOP can also be used as a softener and lubricant for chemical fibers, which can improve the softness and ductility of fibers and reduce friction between fibers. During use, the amount of DOP added generally accounts for 10% to 30% of the total weight of plastic or rubber.
4. Transportation and packaging
The transportation of DOP generally adopts road, rail or shipping. Since DOP is a flammable liquid, it is necessary to pay attention to fire prevention, explosion protection and sun protection during transportation. In terms of packaging, DOP is generally packaged in tinned iron drums or plastic drums, each weighing 200 kg or 250 kg. During storage and use, pay attention to avoid direct sunlight and high temperature and humid environment, so as not to affect its quality.
In short, DOP, as an environmentally friendly plasticizer, has a wide range of applications, but it also needs to pay attention to safety issues when using it. Therefore, manufacturers need to strictly control the production process to ensure product quality and safety. In addition, users also need to strictly abide by the usage specifications to avoid adverse effects on the environment and human body.
To sum up, DOP is an important chemical raw material with broad application prospects. Its production process is relatively simple, the upstream and downstream products are complete, and it is easy to use, but it needs to pay attention to safe use and storage. With the improvement of environmental protection awareness and the continuous advancement of technology, DOP will be more environmentally friendly and safe in the future, and become an important support for the chemical industry.
