Bisphenols are manufactured by reacting acetone with twice the amount of phenol. The liquid bisphenol obtained and a phenol is filtered through a metal filter with the filtration grade of 1.0 mu.m or less. Bisphenol which does not contain fine particles of impurities is then obtained.
Bisphenols exist as a hard solid at room temperature. It’s melting and boiling points are 157 °C and 220 °C respectively. Bisphenols are generally harmless because they have very high melting points and are not violate at room temperatures. Because of these attributes, bisphenols are used as chemical building blocks in the manufacturing polycarbonate plastics and epoxy resins.
Polycarbonate plastic is a lightweight but tough plastic with high heat resistance and high electrical resistance. It is often used in place of glass for a significant safety advantage. It is used in the manufacturing of many of our common products such as spectacles lenses, reusable food and drink containers, bullet-proof shields, bicycle helmets, electronic equipments, CDs and VCDS, and many other products.
Epoxy resins are materials used to line metal cans to protect food and beverages from contamination. They are also used in protective coatings.
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