Production of cyclic acetals by reactive distillation
AssigneeEastman Chemical Company
InventorsDamon Ray Billodeaux, Robert Scott Huss, Daniel Latham Terrill, Jerome Leonard Stavinoha, Jr.
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Abstract
Cyclic acetals can be produced in a reactive distillation apparatus by combining a polyhydroxyl compound and an aldehyde. High concentrations of cyclic acetals are removed as liquid products from the column while water is removed as an overhead vapor stream.
Claims4
A liquid composition comprising water in an amount from 0 to 8 mole %, aldehyde compounds in an amount from 0 to 5 mole %, cyclic acetal compounds in an amount from 25 mole % to 75 mole %, polyhydroxyl compounds in an amount from 25 mole % to 75 mole %, and a catalyst in an amount from 0-0.5 mole %, wherein the stated mole percentages are based on the moles of all ingredients within the liquid composition.
A liquid composition comprising water in an amount from 0 to 0.5 mole %, aldehyde compounds in an amount from 0 to 0.25 mole %, cyclic acetal compounds in an amount from 50 mole % to 60 mole %, polyhydroxyl compounds in an amount from 40 mole % to 50 mole %, and catalyst in an amount from 0-0.1 mole %, wherein the stated mole percentages are based on the moles of all ingredients within the liquid composition.
Dependencies are inferred from the claim text.