Formaldehyde → Methylolurea methylolmelamine

HRID 1865773

反応式

HRID 1865773 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].C=O.[NH2:14][C:15]([NH2:17])=[O:16].N1C(N)=NC(N)=NC=1N.N[C:28](N)=[O:29].C=O.[OH-].[Na+]>>[CH2:28]([NH:14][C:15]([NH2:17])=[O:16])[OH:29].[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

6

反応物 5

HCID 712FormaldehydeHCID 14798Sodium HydroxideHCID 62705Urea formaldehyde foamHCID 93374Melamine formaldehydeHCID 21896498HCID 21896498、化合物

生成物 1

HCID 131727812Methylolurea methylolmelamine

実験手順

Alternatively, the nitrogen functional groups were introduced from the polymeric resins such as melamine-formaldehyde and urea-formaldehyde. The resins were synthesized by the addition-condensation reactions. Firstly, melamine/urea and formaldehyde were mixed in aqueous media in the molar ratio 1:3/1:2. NaOH was added to this mixture to bring the pH to 11-12 at 60° C., which initiates the addition reaction to form methylolurea/methylolmelamine intermediates. Then the pH was adjusted to around 4-5 using H2SO4 to initiate the condensation/polymerization reaction resulting in the respective resins. The sample was dried using a rotary evaporator at 80° C. under vacuum, and heat-treated in an Ar atmosphere at 800° C. for 1 h.

後処理

  1. customThe resins were synthesized by the addition-condensation reactions
  2. customat 60° C.
  3. additionthe addition reaction

出典と根拠

ORDレコード
ord-0a9ee32120d04e1c83a00191263f2b7d
出典データセット
uspto-grants-2009_12
特許番号
US07629285B2

関連ノート

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