Ammonia → Ammonia

HRID 2118568Notes

Reaction equation

HRID 2118568 reaction equation
[NH3:1].[OH-].[NH4+].[C:4]([O:7]C1C=CC(C=C)=CC=1)(=[O:6])C.[C:16](=[O:18])=[O:17]>O>[C:4](=[O:6])([O-:17])[O-:7].[NH4+:1].[NH4+:1].[NH3:1].[C:16](=[O:18])=[O:17]

Participants

8

Reactant 4

HCID 222AmmoniaHCID 280Carbon DioxideHCID 14923Ammonium HydroxideHCID 758214-Ethenylphenyl acetate

Product 3

HCID 222AmmoniaHCID 280Carbon DioxideHCID 517111Ammonium Carbonate

Reagents, catalysts & solvents 1

HCID 962WaterSolvent

Procedure

In carrying out the process of this invention, ammonia gas or ammonium hydroxide is added to the solution of 4-acetoxystyrene polymer and heating is conducted at a temperature of about 50° C. to about 150° C. for a time sufficient to hydrolyze the acetoxy groups to phenol groups. Wet carbon dioxide gas is then introduced into the reaction solution as a sparge below the solution surface. During the introduction of carbon dioxide gas, the temperature is held at about 110° C. to about 180° C. The carbon dioxide reacts with the ammonia to form ammonium carbonate which under the influence of heat decomposes to ammonia, carbon dioxide and water, which then can be distilled or sparged out with nitrogen from the reaction solution.

Workup

  1. temperatureheating
  2. customis conducted at a temperature of about 50° C. to about 150° C. for a time
  3. customa sparge below the solution surface
  4. customis held at about 110° C. to about 180° C
  5. customThe carbon dioxide reacts with the ammonia

Sources & evidence

ORD record
ord-5670c39338944caea95d4ac7e1e24591
Source dataset
uspto-grants-1987_07
Patent number
US04678843

Reaction notes

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