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

HRID 249227

反応式

HRID 249227 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 67.9%

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 (1050.0 g, 14.571 moles), itaconic acid (210.64 g, 1.6190 moles), Wako V-50 (4.3919 g, 16.19 millimole), and 7.9 liters of water, which has been acidified to pH 2.0 with hydrochloric acid, are added to a 22 liter three-necked round-bottomed flask fitted with a thermometer, a mechanical stirrer, and 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 nitrogen. 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 1,222.1 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 711,700.

後処理

  1. additionare added to a 22 liter three-necked round-bottomed flask
  2. customfitted with a thermometer, a mechanical stirrer, and gas inlet/outlet adapter capable
  3. customof 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-9cee501332134035a255b7b6dfad059d
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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