Formaldehyde → HCID 21285052, compound

HRID 1772562Notes

Reaction equation

HRID 1772562 reaction equation
[C:1]1([OH:7])[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1.[N:8]1[C:15]([NH2:16])=[N:14][C:12]([NH2:13])=[N:11][C:9]=1[NH2:10].C=O>>[N:8]1[C:15]([NH2:16])=[N:14][C:12]([NH2:13])=[N:11][C:9]=1[NH2:10].[CH2:1]=[O:7].[C:1]1([OH:7])[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1

Participants

4

Reactant 3

HCID 712FormaldehydeHCID 996PhenolHCID 7955Melamine

Product 1

HCID 21285052HCID 21285052, compound

Conditions

Temperature
170 °C

Procedure

The process for Example 3 is initiated by charging 221.5 g phenol (2.35 moles), 31.9 g melamine (0.25 moles), 36.6 g of 50% formaldehyde (0.61 moles) into a reaction vessel to form a reaction mixture, heating the reaction mixture under distillation mode until distillation starts around 115-120° C., gradually increasing the temperature up to about 170° C. while water and phenol are removed atmospherically. Then, applying a vacuum gradually until most of non-reacted phenol is removed, and water sparging the reaction mixture at about 180° C. to reduce the phenol level to <1% in the final product. The process is concluded by removing phenol (172 g) distillate and discharging the product (87.3 g) from the reaction vessel. The recovered product exhibited a solubility of almost any concentration such as from 33 wt. % solids to 70 wt. % solids in common solvents such as MEK. Such solutions remained dissolved in a MEK for greater than 500 hours or indefinitely without precipitation.

Workup

  1. customto form a reaction mixture
  2. temperatureheating the reaction mixture
  3. distillationunder distillation mode
  4. distillationuntil distillation
  5. customstarts around 115-120° C.
  6. customare removed atmospherically
  7. customis removed
  8. customat about 180° C.
  9. customby removing phenol (172 g) distillate
  10. concentrationany concentration such as from 33 wt. % solids to 70 wt. % solids in common solvents such as MEK
  11. dissolutionSuch solutions remained dissolved in a MEK for greater than 500 hours or indefinitely without precipitation

Sources & evidence

ORD record
ord-03be382e9a4349d899ab7152bd9cf07f
Source dataset
uspto-grants-2016_02
Patent number
US09249251B2

Reaction notes

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