Formaldehyde → Melamine formaldehyde

HRID 6325

反応式

HRID 6325 の反応式
[Na].[N:2]1[C:9]([NH2:10])=[N:8][C:6]([NH2:7])=[N:5][C:3]=1[NH2:4].[CH2:11]=[O:12].[OH-].[Na+]>O>[CH2:11]=[O:12].[N:2]1[C:9]([NH2:10])=[N:8][C:6]([NH2:7])=[N:5][C:3]=1[NH2:4]

参加物

6

反応物 4

HCID 712FormaldehydeHCID 7955MelamineHCID 14798Sodium HydroxideHCID 5360545Sodium

生成物 1

HCID 93374Melamine formaldehyde

試薬・触媒・溶媒 1

HCID 962Water溶媒

反応条件

温度
60 °C

実験手順

50 parts of 20% liquor A (dispersion of aromatic isocyanate compound) and 100 parts of 30% liquor B (co-dispersion of imino compound-sensitizer) obtained in the above (1) were mixed with each other until a homogeneous mixture was obtained. 150 parts of the mixture of liquor A and liquor B was gradually added with 120 parts of a 5% aqueous solution of sodium salt of styrene-maleic anhydride copolymer adjusted to pH 4.0 with stirring. Stirring was carried out for about 30 minutes to obtain agglomerates having an average particle diameter of 10 μm and it was simultaneously confirmed that the agglomerates were emulsified and dispersed. Separately, a mixture comprising 11.4 parts of melamine, 28.5 parts of a 37% aqueous formaldehyde solution and 74.1 parts of water was adjusted to pH 9.0 with sodium hydroxide and then was heated at 60° C. with stirring to perform dissolution to obtain 114 parts of a transparent melamine-formaldehyde precondensate.

後処理

  1. additionwere mixed with each other until a homogeneous mixture
  2. customwas obtained
  3. addition150 parts of the mixture of liquor A and liquor B
  4. stirringStirring
  5. customto obtain agglomerates
  6. additiondispersed
  7. stirringwith stirring
  8. dissolutiondissolution

出典と根拠

ORDレコード
ord-0ff8025e8c5444e9b4b310a7c0c96dda
出典データセット
uspto-grants-1993_09
特許番号
US05248555

関連ノート

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