Acrylamide → Acrylamide

HRID 1156955Notes

Reaction equation

HRID 1156955 reaction equation
[C:1](#[N:4])[CH:2]=[CH2:3].C1(=O)[NH:10][C:9](=[O:11])[CH2:8][CH2:7]C1.[C:13]([NH2:17])(=O)[CH:14]=[CH2:15].C(#N)C=C.C1(=O)[NH:27][C:26](=[O:28])[CH2:25][CH2:24]C1.C(N)(=O)C=C>>[C:1](#[N:4])[CH:2]=[CH2:3].[C:9]([NH2:10])(=[O:11])[CH:8]=[CH2:7].[C:13](#[N:17])[CH:14]=[CH2:15].[C:26]([NH2:27])(=[O:28])[CH:25]=[CH2:24]

Participants

7

Reactant 4

HCID 6579AcrylamideHCID 7855AcrylonitrileHCID 70726GlutarimideHCID 70465568HCID 70465568, compound

Product 3

HCID 6579AcrylamideHCID 7855AcrylonitrileHCID 23304058HCID 23304058, compound

Conditions

Temperature
75 °C

Procedure

A solution of multiblock acrylonitrile-glutarimide-acrylamide copolymer of the following composition: 57.4 percent by weight of acrylonitrile units arranged into sequences with average molecular weight of about 1,500,33.2 percent by weight of glutarimide units and 9.4 percent by weight of acrylamide units arranged randomly into sequences with an average molecular weight of 1110, is heated to 75° C. and bubbled with dry air to remove HCl whereupon gaseous ammonia is introduced at a partial pressure of 1.2 atmospheres for two hours. The solution is subjected to air bubbling at ambient pressure and thereafter coagulated with water and formed an acrylonitrile-acrylamide hydrogel comprised of 61.8 mole percent acrylonitrile and 38.2 mole percent acrylamide. Thus illustrated a method of eliminating carboxylic groups from an acrylonitrile-acrylamide-acrylic acid hydrogel.

Workup

  1. custombubbled
  2. customwith dry air
  3. customto remove HCl whereupon gaseous ammonia
  4. additionis introduced at a partial pressure of 1.2 atmospheres for two hours
  5. custombubbling at ambient pressure

Sources & evidence

ORD record
ord-b644d03025cb4998be885adcca3429b3
Source dataset
uspto-grants-1982_06
Patent number
US04337327

Reaction notes

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