Definition and Properties of Microcrystalline Wax
Microcrystalline wax is amorphous solid wax, also known as purified ground wax. It is prepared from vacuum residue by solvent deasphalting, solvent dewaxing, deoiling, refining, shaping, and packaging. Its chemical composition is less than normal alkanes. The main components are cyclic hydrocarbons with normal or isomeric alkyl side chains, especially naphthenic hydrocarbons. The larger the molecular weight, the higher the content of isomers and long chain alkanes. Microcrystalline wax has the characteristics of small hardness, good flexibility, and stress, and tends to plastic flow, high elongation, good flexibility, and strong gel strength. 。 With its unique properties, microcrystalline wax is widely used in emulsion explosives, rubber, hot melt adhesives, crayons for cultural and educational supplies, rubber mud, wax paper, ink, lubricant, paint, polishing, spinning wax, casting mold, electrical and electronic insulation, medicine, cosmetics, food, and food packaging, etc.
The appearance of microcrystalline wax is ruined or white. The basic chemical composition of microcrystalline wax is fewer n-alkanes. The main components are cyclic hydrocarbons with n-alkyl or Iso-alkyl side chains, especially naphthenes. The higher the molecular weight, the higher the content of isoalkanes and long side chain naphthenes. The number of carbon atoms is 21, the molecular weight is about 1, the melting point is 1, and the chemical properties are stable. Compared with paraffin wax, microcrystalline wax has a higher melting point and molecular weight, higher refractive index, relative density and viscosity after melting, and lower shrinkage and surface tension under the same hardness. Therefore, microcrystalline wax has the characteristics of low hardness, good flexibility, plastic flow under stress, large elongation and good flexibility. In addition, microcrystalline wax also has a strong gel strength for oil products.
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