Formaldehyde → Formaldehyde melamine silicate

HRID 258528

Reaktionsgleichung

Reaktionsgleichung von HRID 258528
[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]>>[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]

Komponenten

3

Edukt 2

HCID 712FormaldehydeHCID 69385141Melamine silicate2×

Produkt 1

HCID 131710831Formaldehyde melamine silicate

Versuchsvorschrift

Moist silicic acid gel containing equivalent to about one mol of silicon dioxide with a pH of 6.5 to 8, is mixed with one mol of melamine, heated to 70° to 260° C., while mixing, for 20 to 60 minutes, thereby producing a white, fine, granular compound, melamine silicate. The said melamine silicate is added to about 5 mols of aqueous formaldehyde, heated to 70° to 120° C. for 30 to 90 minutes; the melamine silicate goes into solution; the solution is filtered; and about 5% to 15% of the said silicic acid gel is filtered out. The said solution is heated until the melamine silicate reacts chemically with the formaldehyde to produce white granules of poly (formaldehyde melamine silicate) resin. On further heating, the said resin melts and produces a soft pliable resin.

Aufarbeitung

  1. temperatureheated to 70° to 120° C. for 30 to 90 minutes
  2. filtrationthe solution is filtered
  3. filtrationand about 5% to 15% of the said silicic acid gel is filtered out
  4. temperatureThe said solution is heated until the melamine silicate
  5. customreacts chemically with the formaldehyde

Quellen und Nachweise

ORD-Eintrag
ord-475de8ab3fef4409ad39a91f6ee6d245
Quelldatensatz
uspto-grants-1977_07
Patentnummer
US04033935

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