Formaldehyde → 2,3-Dimethylbenzaldehyde

HRID 420828

反応式

HRID 420828 の反応式
[CH2:1]=[O:2].[C:3]1(O)C=CC=CC=1.S(=O)(=O)(O)O.[C:15]1([CH3:22])[CH:20]=[CH:19][CH:18]=[C:17](C)[CH:16]=1>>[C:15]1([CH3:22])[CH:16]=[CH:17][CH:18]=[C:19]([CH:1]=[O:2])[C:20]=1[CH3:3]

参加物

5

反応物 4

HCID 712FormaldehydeHCID 996PhenolHCID 1118Sulfuric AcidHCID 7929M-Xylene

生成物 1

HCID 342242,3-Dimethylbenzaldehyde

実験手順

A 2-liter separable flask equipped with a thermometer, a reflux condenser, and a stirrer was charged with 480 parts of 50% formalin, 110 parts of phenol, 202 parts of 98% industrial sulfuric acid, and 424 parts of m-xylene. The resulting mixture was allowed to react at 84° C. to 88° C. for 4 hours. After the reaction was completed, the reaction mixture was allowed to stand to separate a resin phase and a sulfuric acid aqueous phase. The resin phase was washed with water 3 times, and then unreacted m-xylene was removed under the conditions of 20 to 30 mmHg and 120° C. to 130° C. for 20 minutes. As a result, 480 parts of a phenol-modified xylene-formaldehyde resin having a viscosity of 1,050 mPa·s (25° C.) were obtained.

後処理

  1. customA 2-liter separable flask equipped with a thermometer, a reflux condenser, and a stirrer
  2. customto react at 84° C. to 88° C. for 4 hours
  3. customto separate a resin phase
  4. washThe resin phase was washed with water 3 times
  5. customunreacted m-xylene was removed under the conditions of 20 to 30 mmHg and 120° C. to 130° C. for 20 minutes
  6. customa viscosity of 1,050 mPa·s (25° C.)
  7. customwere obtained

出典と根拠

ORDレコード
ord-50faef3ce6384fe2b73d4d423ddc05f4
出典データセット
uspto-grants-2012_01
特許番号
US08097664B2

関連ノート

読み込み中…