Hydrochloric Acid → 2-Methylidenebutanedioic acid--prop-2-enoic acid (1/1)

HRID 249226

反応式

HRID 249226 の反応式
[C:1]([OH:5])(=[O:4])[CH:2]=[CH2:3].[C:6]([OH:14])(=[O:13])[C:7]([CH2:9][C:10]([OH:12])=[O:11])=[CH2:8].Cl>O>[CH2:3]=[CH:2][C:1]([OH:5])=[O:4].[CH2:8]=[C:7]([C:6]([OH:14])=[O:13])[CH2:9][C:10]([OH:12])=[O:11]

参加物

5

反応物 3

HCID 313Hydrochloric AcidHCID 811Itaconic acidHCID 6581Acrylic Acid

生成物 1

HCID 1615092-Methylidenebutanedioic acid--prop-2-enoic acid (1/1)収率 370.5%

試薬・触媒・溶媒 1

HCID 962Water溶媒

反応条件

温度
55 °C

実験手順

Acrylic acid (105.27 g, 1.4609 moles), itaconic acid (21.12 g, 0.1623 mole), Wako V-50 (0.4403 g, 1.623 millimole), and 812 ml of water, which has been acidified to pH 2.0 with hydrochloric acid, are added to a 2 liter three-necked round-bottomed flask. The necks are fitted with a thermometer, a stopper, and a gas inlet/outlet adapter capable of bubbling gas through a liquid in the flask and venting it. The solution is deaerated by passage of nitrogen gas and is then placed under an atmosphere of argon. The solution is heated to 55° C. and maintained at this temperature for 15 hours. The viscous solution of copolymer is cooled to ambient temperature and is freeze dried to give 121.57 g of poly(acrylic acid-itaconic acid) copolymer as a colorless solid. The mass average molecular weight, as determined by low angle laser light scattering on a dialyzed portion in 0.2 Molar sodium chloride in water (refractive index=1.3344, dn /dc =0.1683), is 821,600.

後処理

  1. additionare added to a 2 liter three-necked round-bottomed flask
  2. customThe necks are fitted with a thermometer
  3. customa stopper, and a gas inlet/outlet adapter capable of bubbling gas through a liquid in the flask
  4. temperaturemaintained at this temperature for 15 hours
  5. temperatureThe viscous solution of copolymer is cooled to ambient temperature
  6. customdried

出典と根拠

ORDレコード
ord-ff1fb84a92ff47adb7ba288d30ffb35e
出典データセット
uspto-grants-1993_05
特許番号
US05213789

関連ノート

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