From hundreds of atoms combine to form a covalent bond with each other particularly large, relative molecular mass of the compound having the repeating structural unit.
As the polymer compound of the materials used in a large number of today's world, based on coal, oil, natural gas, etc. as a starting material was obtained low-molecular-weight organic compound, and then formed by the polymerization reaction. These low molecular weight compound referred to as "monomer" also known as the polymer, they are generated by the polymerization reaction and the polymer compound. Usually the polymerization reaction is divided into addition polymerization and condensation polymerization of two categories, referred to as the polyaddition and polycondensation.
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