Formaldehyde → (Hydroxymethyl)melamine

HRID 482179

反応式

HRID 482179 の反応式
[CH2:1]=[O:2].[N:3]1[C:10]([NH2:11])=[N:9][C:7]([NH2:8])=[N:6][C:4]=1[NH2:5].[OH-].[Na+]>O>[CH2:1]([NH:5][C:4]1[N:6]=[C:7]([NH2:8])[N:9]=[C:10]([NH2:11])[N:3]=1)[OH:2]

参加物

5

反応物 3

HCID 712FormaldehydeHCID 7955MelamineHCID 14798Sodium Hydroxide

生成物 1

HCID 70300(Hydroxymethyl)melamine

試薬・触媒・溶媒 1

HCID 962Water溶媒

反応条件

温度
70 °C

実験手順

Formaldehyde (50%, 12.0 g, 0.2 mol) was added to a mixture of melamine (12.6 g, 0.1 mol) and water (40 ml) with stirring. The pH of the mixture was adjusted to 9.0-9.2 by addition of NaOH (0.5N). The mixture was heated to 70° C. and a dyestuff (Direct red 252 mg, 2000 ppm based on melamine) was added to give a colored methylolmelaminersolution. In this procedure, other dyestuffs can be used such as direct dyes, fluorescent dyes, dispersion dyes, and mixtures thereof. See Table 1.

後処理

  1. additiona dyestuff (Direct red 252 mg, 2000 ppm based on melamine) was added
  2. customto give a colored methylolmelaminersolution

出典と根拠

ORDレコード
ord-8af9f6c403b3492d89625775cedb775e
出典データセット
uspto-grants-1998_08
特許番号
US05795507

関連ノート

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