Formaldehyde → Melamine formaldehyde

HRID 2417765

Reaktionsgleichung

Reaktionsgleichung von HRID 2417765
[Na].[C:2](O)(=[O:5])C=C.C(O)(=O)C(CC(O)=O)=C.[OH-].[Na+].[N:18]1[C:25]([NH2:26])=[N:24][C:22]([NH2:23])=[N:21][C:19]=1[NH2:20].C=O>O>[N:18]1[C:25]([NH2:26])=[N:24][C:22]([NH2:23])=[N:21][C:19]=1[NH2:20].[CH2:2]=[O:5]

Komponenten

7

Edukt 5

HCID 712FormaldehydeHCID 7955MelamineHCID 14798Sodium Hydroxide2×HCID 1615092-Methylidenebutanedioic acid--prop-2-enoic acid (1/1)2×HCID 5360545Sodium

Produkt 1

HCID 93374Melamine formaldehyde

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 962WaterLösungsmittel

Versuchsvorschrift

Fifteen (15) parts of a partial sodium salt of an acrylic acid/itaconic acid copolymer was dissolved in 135 parts of deionized water to obtain a 10-% aqueous solution. Thirty (30) parts of this 10-% aqueous solution containing the acrylic acid/itaconic acid copolymer was mixed with 60 parts of the 10-% aqueous solution of the sulfonic acid-modified polyvinyl alcohol used in Example 2, and then the mixture was adjusted to a pH of 4.8 by addition of a 20-% aqueous caustic soda. This mixture was further mixed with 180 parts of the oil included dyes used in Example 1 to form a uniform emulsion having an average particle size of 4.3μ. Separately, a melamine/formaldehyde precondensate was prepared by mixing 10 parts of melamine with 20 parts of 37-% formalin and adjusting the product to a pH of 8.5 by addition of caustic soda.

Aufarbeitung

  1. customto obtain a 10-% aqueous solution
  2. additionThis mixture was further mixed with 180 parts of the oil
  3. customto form a uniform emulsion

Quellen und Nachweise

ORD-Eintrag
ord-24c161d8711a4ac0a7cbbca7baf9b166
Quelldatensatz
uspto-grants-1984_09
Patentnummer
US04470935

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