Polyvinyl alcohol is used in many times in our life. There are many classifications of polyvinyl alcohol and many uses of polyvinyl alcohol. It plays a very important role in our production and life. Some people are not very clear about the use of polyvinyl alcohol, so, what is the use of polyvinyl alcohol? Let's take a look!
What is polyvinyl alcohol？
Polyvinyl alcohol is an organic compound, chemical formula [C2H4O] N, appearance is white flake, flocculent or powder solid, tasteless. Soluble in water (above 95℃), slightly soluble in dimethyl sulfoxide, insoluble in gasoline, kerosene, vegetable oil, benzene, toluene, dichloroethane, carbon tetrachloride, acetone, ethyl acetate, methanol, ethylene glycol, etc.
Two, the role of polyvinyl alcohol.
Used for the manufacture of polyvinyl acetal, gasoline resistant pipe and vinylon, fabric treating agent, emulsifier, paper coating, adhesive, etc.
Classification of chemical raw materials
Chemical raw materials can be divided into organic and inorganic chemical raw materials.
Classification of organic chemical raw materials
It can be divided into alkanes and their derivatives, alkenes and their derivatives, alkynes and derivatives, quinones, aldehydes, alcohols, ketones, phenols, ethers, anhydrides, esters, organic acids, carboxylate, carbohydrates, heterocyclic, nitriles, halogenates, aminoids, and other categories.
Classification of inorganic chemical raw materials
The main raw materials of inorganic chemical products are sulfur, sodium, phosphorus, potassium, calcium and other chemical minerals (see inorganic salt industry) and coal, oil, natural gas and air, water and so on.
What are organic chemical raw materials
Organic chemical industry is the abbreviation of organic chemical industry, also known as organic synthesis industry. Based on petroleum, natural gas, coal and other raw materials, the main production of various organic raw materials industry. Basic organic chemical direct raw materials include hydrogen, carbon monoxide, methane, ethylene, acetylene, propylene, carbon four or more aliphatic hydrocarbons, benzene, toluene, xylene, ethylbenzene and so on. From crude oil, petroleum distillate or low carbon alkane cracking gas, refinery gas and gas, after separation treatment, can be made for different purposes of aliphatic hydrocarbon raw materials; Aromatics can be separated from the reformed gasoline of catalytic reforming, the cracked gasoline of hydrocarbon cracking and the coal tar of coal retorting.
Post time: May-19-2022