Formaldehyde → Melamine formaldehyde

HRID 484923

Reaktionsgleichung

Reaktionsgleichung von HRID 484923
C(OCCCCCCCCCCCC)(=O)C1C=C(O)C(O)=[C:4]([OH:5])C=1.C(OCCC(C)C)(=O)C1C=C(O)C(O)=C(O)C=1.[OH-].[Na+].[N:44]1[C:51]([NH2:52])=[N:50][C:48]([NH2:49])=[N:47][C:45]=1[NH2:46].C=O>C(OCC)(=O)CCCCC(OCC)=O.C(O)CCCCCCC/C=C\CCCCCCCC.O>[CH2:4]=[O:5].[N:44]1[C:51]([NH2:52])=[N:50][C:48]([NH2:49])=[N:47][C:45]=1[NH2:46]

Komponenten

9

Edukt 5

HCID 712FormaldehydeHCID 7955MelamineHCID 14425Dodecyl GallateHCID 14798Sodium Hydroxide2×HCID 75596Isoamyl gallate

Produkt 1

HCID 93374Melamine formaldehyde

Reagenzien, Katalysatoren, Lösungsmittel 3

HCID 962WaterLösungsmittelHCID 8844Diethyl AdipateLösungsmittelHCID 5284499Oleyl AlcoholLösungsmittel

Reaktionsbedingungen

Temperatur
80 °C

Versuchsvorschrift

A 15 part quantity of lauryl gallate and 5 parts of isoamyl gallate were dissolved in a mixture of 70 parts of diethyl adipate and 30 parts of oleyl alcohol with heating to prepare an oil. The oil was added to 100 parts of 5% aqueous solution having a pH of 5 and containing SCRIPSET 520 (trade name of styrene-maleic anhydride copolymer, product of Monsant Co.) and a small amount of sodium hydroxide, and emulsified to obtain a dispersion of particles 4.0μ in average size. Ten parts of melamine and 25 parts of 37% aqueous solution of formaldehyde were added to 65 parts of water. The mixture was adjusted to a pH of 9 with sodium hydroxide and heated to 80° C. for 15 minutes, whereby a melamine-formaldehyde initial condensate was obtained. The dispersion was added to the condensate and the mixture was stirred for 1 hour at 75° C. to prepare a microcapsule dispersion.

Aufarbeitung

  1. temperaturewith heating
  2. customto prepare an oil
  3. customto obtain a dispersion of particles 4.0μ in average size

Quellen und Nachweise

ORD-Eintrag
ord-c1af9ba64f7f4e8f90ce854a4b302c7a
Quelldatensatz
uspto-grants-1985_08
Patentnummer
US04533930

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