Acrylic Acid → Butyl prop-2-enoate;styrene

HRID 511908

Reaction equation

HRID 511908 reaction equation
[CH2:1]=[CH:2][C:3]1[CH:8]=[CH:7][CH:6]=[CH:5][CH:4]=1.[C:9]([O:13][CH2:14][CH2:15][CH2:16][CH3:17])(=[O:12])[CH:10]=[CH2:11].C(O)(=O)C=C.C(=O)([O-])O.[Na+].S(OOS([O-])(=O)=O)([O-])(=O)=O.[NH4+].[NH4+].O.N>O>[CH2:1]=[CH:2][C:3]1[CH:8]=[CH:7][CH:6]=[CH:5][CH:4]=1.[C:9]([O:13][CH2:14][CH2:15][CH2:16][CH3:17])(=[O:12])[CH:10]=[CH2:11]

Participants

8

Reactant 6

HCID 6581Acrylic AcidHCID 7501StyreneHCID 8846Butyl AcrylateHCID 62648Ammonium PersulfateHCID 516892Sodium BicarbonateHCID 12896473Azane;hydrate

Product 1

HCID 168422Butyl prop-2-enoate;styrene

Reagents, catalysts & solvents 1

HCID 962WaterSolvent3×

Conditions

Temperature
80 °C

Procedure

As monomers, 123.75 g of styrene, 123.75 g of butyl acrylate, and 2.5 g of acrylic acid were used and mixed with 5.0 g of the emulsifier of the present invention product or the comparative product shown in Table 1 and 105 g of ion-exchanged water by using a homomixer, thereby preparing a mixed monomer emulsion. Aside from this, in a reactor equipped with a stirrer, a reflux condenser, a thermometer, a nitrogen inlet tube, and a dropping funnel, 122 g of ion-exchanged water and 0.25 g of sodium hydrogen carbonate were charged. A 36 g portion of the previously prepared mixed monomer emulsion described above was charged in the dropping funnel and added to the reactor all together, and then, the temperature was increased to 80° C. Thereafter, stirring was continued for 15 minutes. Subsequently, 0.5 g of ammonium persulfate as a polymerization initiator was dissolved in 20 g of ion-exchanged water, and the resulting solution was added to the reactor to initiate polymerization. Subsequently, 15 minutes after adding the polymerization initiator, 324 g of the rest of the mixed monomer emulsion was added dropwise thereto over 3 hours to carry out polymerization. Further, after maturation was allowed to proceed for consecutive 2 hours, the resultant was cooled and adjusted at a pH of 8 with ammonia water, whereby a polymer dispersion to be used for the evaluation experiments of the present invention was obtained.

Workup

  1. additionmixed with 5.0 g of the emulsifier of the present invention product
  2. custompreparing a mixed monomer emulsion
  3. customAside from this, in a reactor equipped with a stirrer, a reflux condenser
  4. customA 36 g portion of the previously prepared
  5. additionmixed monomer emulsion
  6. additionabove was charged in the dropping funnel
  7. additionadded to the reactor all together, and then, the temperature
  8. additionthe resulting solution was added to the reactor
  9. custompolymerization
  10. additionSubsequently, 15 minutes after adding the polymerization initiator, 324 g of the rest of the mixed monomer emulsion
  11. additionwas added dropwise
  12. waitover 3 hours to carry out
  13. custompolymerization
  14. waitto proceed for consecutive 2 hours
  15. temperaturethe resultant was cooled
  16. customwas obtained

Sources & evidence

ORD record
ord-04e338034cc5444a9fc2bd650baa640a
Source dataset
uspto-grants-2015_08
Patent number
US09102603B2

Linked notes

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