N,N'-Diphenyl-P-Phenylenediamine → Sulfoethyl methacrylate

HRID 704480

反応式

HRID 704480 の反応式
[S:1]([CH2:5][CH2:6][OH:7])([OH:4])(=[O:3])=[O:2].C1C=CC(NC2C=CC(NC3C=C[CH:25]=[CH:26][CH:27]=3)=CC=2)=CC=1.[C:28]1(C=CC(O)=CC=1)[OH:29].COC>>[C:28]([O:7][CH2:6][CH2:5][S:1]([OH:4])(=[O:3])=[O:2])(=[O:29])[C:26]([CH3:25])=[CH2:27]

参加物

4

反応物 3

HCID 6319N,N'-Diphenyl-P-PhenylenediamineHCID 7866Isethionic AcidHCID 21865427Benzene-1,4-diol;methoxymethane

生成物 1

HCID 74543Sulfoethyl methacrylate

実験手順

To the reactor containing the concentrated isethionic acid solution of Example 1 is added 95.2 Kg. (209.5 lbs.) of MAA to achieve a MAA/ITA molar ratio of about 5:1 along with 14 grams of N,N' diphenyl-p-phenylene diamine and 140 grams of monomethyl ether hydroquinone, both serving as polymerization inhibitors. The mixture is heated for about 6 hours under a vacuum of about 90 mm. Hg. at a temperature of about 80° C. to form sulfoethyl methacrylate according to the reaction: ##STR9## with water of reaction and residual water from the oxidation reaction being continuously removed by azeotropic distillation of a water/MAA mixture under vacuum. At the completion of the reaction, as shown by the cessation of the azeotropic distillation and an increase in the pot temperature, any remaining MAA is removed by vacuum distillation at a pressure of about 10 mm. Hg. The resultant product is sulfoethyl methacrylate having a purity of about 90-95% with methacrylic acid as the major impurity.

後処理

  1. additionis added 95.2 Kg
  2. customboth serving as polymerization inhibitors
  3. temperatureThe mixture is heated for about 6 hours under a vacuum of about 90 mm. Hg

出典と根拠

ORDレコード
ord-e17b2978e879456797488cd3165c9020
出典データセット
uspto-grants-1991_01
特許番号
US04987250

関連ノート

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