Formaldehyde → Xylene formaldehyde

HRID 1856112Notes

Reaction equation

HRID 1856112 reaction equation
[CH2:1]=[O:2].S(=O)(=O)(O)O.[C:8]1(C)[CH:13]=[CH:12][CH:11]=[C:10]([CH3:14])[CH:9]=1>>[C:10]1([CH3:14])[C:11]([CH3:1])=[CH:12][CH:13]=[CH:8][CH:9]=1.[CH2:1]=[O:2]

Participants

4

Reactant 3

HCID 712FormaldehydeHCID 1118Sulfuric AcidHCID 7929M-Xylene

Product 1

HCID 165724Xylene formaldehyde

Procedure

A reactor was charged with 106 g of m-xylene, 129 g of a 37% aqueous solution of formaldehyde (formalin) and 98% by weight sulfuric acid, and the reaction was started at 95° C. with stirring. The reaction was performed for 7 hours, and the temperature finally rose to 104° C. After the end of the reaction, the aqueous phase at the bottom (sulfuric acid phase) was separated, and the resulting oil phase was steam-distilled at 100° C. at atmospheric pressure. 107 g of a xylene/formaldehyde resin was obtained.

Workup

  1. customwas started at 95° C.
  2. customfinally rose to 104° C
  3. customAfter the end of the reaction
  4. customthe aqueous phase at the bottom (sulfuric acid phase) was separated
  5. distillationthe resulting oil phase was steam-distilled at 100° C. at atmospheric pressure

Sources & evidence

ORD record
ord-f4ede941cf0d49a989454f848adeaa0e
Source dataset
uspto-grants-1980_08
Patent number
US04218247

Reaction notes

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