Acrylic Acid → Acrylic Acid

HRID 1085767Notes

Reaction equation

HRID 1085767 reaction equation
[PH2]([O-])=O.[Na+].O.[PH2]([O-])=O.[Na+].C1(=O)[O:15][C:13](=[O:14])[CH:12]=[CH:11]1.[Na].S(OOS([O-])(=O)=O)([O-])(=O)=O.[K+].[K+].[C:30]([OH:34])(=[O:33])[CH:31]=[CH2:32]>O>[C:13]([OH:15])(=[O:14])[CH:12]=[CH2:11].[C:13]([OH:15])(=[O:14])/[CH:32]=[CH:31]\[C:30]([OH:34])=[O:33]

Participants

9

Reactant 6

HCID 6581Acrylic AcidHCID 7923Maleic AnhydrideHCID 24412Potassium PersulfateHCID 5360545SodiumHCID 178418950HCID 178418950, compoundHCID 178527019HCID 178527019, compound

Product 2

HCID 6581Acrylic AcidHCID 444266Maleic Acid

Reagents, catalysts & solvents 1

HCID 962WaterSolvent

Procedure

Copolymers of acrylic acid and maleic acid were prepared using sodium hypophosphite to promote telomerization. In a typical reaction, sodium hypophosphite monohydrate of a desired amount was added to deionized water and the solution heated to about 90°-100° C. Maleic anhydride was added to the solution and pH adjusted to about 4. Sodium or potassium persulfate (1-10% of total monomer feed) was used to initiate the polymerization. Acrylic acid at the appropriate ratio was added periodically over a 2-4 hour time period. Polymerization was continued until substantially 100% conversion was obtained.

Workup

  1. temperaturethe solution heated to about 90°-100° C
  2. customthe polymerization
  3. customPolymerization
  4. customwas obtained

Sources & evidence

ORD record
ord-c98cd29c5e7b4ea687e948637397d90f
Source dataset
uspto-grants-1991_04
Patent number
US05011682

Reaction notes

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