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Pentaerythritol Use and Technology

PENTAERYTHRITOL is used in alkyd resins, radia-tion cure monomers, polyvinyl chloride(PVC) stabilizers, polyurethanes, rosin esters, synthetic lubricants, pigment treatment, antioxidants, and explosives.
The synthesis of PENTAERYTHRITOL involves reacting four moles of formaldehyde and one mole of acetaldehyde in two differentiated steps. The first is aldol condensation to give pentaerythritose. Then , the aldehyde obtained is subjected to a crossed cannizzaro reaction, whereby one molecule of the pentaerythritose is reduced to pentaerythritol, which is then separated. The raw pentaerythritol is dissolved again and dubjected to high temperature acid hydrolysis, then purified in an activated carbon bed, concentrated and crystallized