Formaldehyde → Formaldehyde melamine silicate

HRID 426519

Reaction equation

HRID 426519 reaction equation
[Si:1]([OH:5])([OH:4])([OH:3])[OH:2].[N:6]1[C:13]([NH2:14])=[N:12][C:10]([NH2:11])=[N:9][C:7]=1[NH2:8].[CH2:15]=[O:16].S(=O)(=O)(O)O>>[Si:1]([OH:5])([OH:4])([OH:3])[OH:2].[N:6]1[C:13]([NH2:14])=[N:12][C:10]([NH2:11])=[N:9][C:7]=1[NH2:8].[CH2:15]=[O:16]

Participants

4

Reactant 3

HCID 712FormaldehydeHCID 1118Sulfuric AcidHCID 69385141Melamine silicate

Product 1

HCID 131710831Formaldehyde melamine silicate

Procedure

The said melamine silicate as produced in Example VII is added to about 2 mols of formaldehyde in an aqueous solution and dilute sulfuric acid is added until the pH is 4 to 5.5, then heated to 70° to 100°, while agitating, for 15 to 60 minutes, thereby producing a white, solid resin, poly (formaldehyde melamine silicate). The said resin is not soluble in acetic acid and is resistent to strong acids and alkalis. On heating, the said resin softens very little and is destroyed before it will melt.

Workup

  1. additionis added until the pH is 4 to 5.5
  2. temperatureheated to 70° to 100°

Sources & evidence

ORD record
ord-32016d0e869348318ac5bc4c6a41f2c4
Source dataset
uspto-grants-1979_10
Patent number
US04169930

Linked notes

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