Sulfuric Acid → Butyl prop-2-enoate--methyl 2-methylprop-2-enoate (1/1)

HRID 1013616

反応式

HRID 1013616 の反応式
C=C.S(=O)(=O)(O)O.[C:8]([O:13][CH3:14])(=[O:12])[C:9]([CH3:11])=[CH2:10].[C:15]([O:19][CH2:20][CH2:21][CH2:22][CH3:23])(=[O:18])[CH:16]=[CH2:17].C(S)CCCCCCCCCCC>O>[C:8]([O:13][CH3:14])(=[O:12])[C:9]([CH3:11])=[CH2:10].[C:15]([O:19][CH2:20][CH2:21][CH2:22][CH3:23])(=[O:18])[CH:16]=[CH2:17]

参加物

7

反応物 5

HCID 1118Sulfuric AcidHCID 6325EthyleneHCID 6658Methyl Methacrylate2 回HCID 81951-Dodecanethiol2 回HCID 8846Butyl Acrylate2 回

生成物 1

HCID 62802Butyl prop-2-enoate--methyl 2-methylprop-2-enoate (1/1)

試薬・触媒・溶媒 1

HCID 962Water溶媒

反応条件

温度
70 °C

実験手順

5 parts of ethylene-modified PVA (PVA-21) and 90 parts of ion-exchanged water were fed into a glass vessel equipped with a reflux condenser, a dropping funnel, a thermometer, a nitrogen inlet mouth and a stirrer, and completely dissolved at 95° C. Next, its pH was mad to be 4 with diluted sulfuric acid added there to, and then 10 parts of methyl methacrylate, 10 parts of n-butyl acrylate and 0.1 parts of n-dodecylmercaptan were added to it with stirring at 150 rpm. This was purged with nitrogen and heated up to 70° C. 5 parts of 1% potassium persulfate was added to it to start the polymerization. Then, a mixture of 40 parts of methyl methacrylate, 40 parts of n-butyl acrylate and 0.4 parts of n-dodecylmercaptan was continuously added to it, over a period of 2 hours. 3 hours after the start of the polymerization, the conversion reached 99.2%, and the polymerization was stopped in this stage. The process gave stable methyl methacrylate/n-butyl acrylate copolymer emulsion (Em-212) having a solid concentration of 51.5%.

後処理

  1. customequipped with a reflux condenser, a dropping funnel
  2. dissolutiona thermometer, a nitrogen inlet mouth and a stirrer, and completely dissolved at 95° C
  3. additionwere added to it
  4. customThis was purged with nitrogen
  5. addition5 parts of 1% potassium persulfate was added to it
  6. customthe polymerization
  7. additionwas continuously added to it, over a period of 2 hours
  8. custom3 hours after the start of the polymerization

出典と根拠

ORDレコード
ord-02fbcd573fb74ca488af09c7097098cc
出典データセット
uspto-grants-2011_07
特許番号
US07981958B1

関連ノート

読み込み中…