Styrene → Butyl prop-2-enoate;styrene

HRID 871809Notes

Reaction equation

HRID 871809 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]>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

4

Reactant 2

HCID 7501StyreneHCID 8846Butyl Acrylate

Product 1

HCID 168422Butyl prop-2-enoate;styrene

Reagents, catalysts & solvents 1

HCID 962WaterSolvent

Conditions

Temperature
85 °C

Procedure

An aqueous medium was prepared by dissolving 0.2 part by mass of polyvinyl alcohol in 300 parts by mass of ion-exchanged water. Meanwhile, 78.0 parts by mass of styrene, 22.0 parts by mass of n-butyl acrylate, and 2.5 parts by mass of 3-hydroxy-1,1-dimethylbutylperoxyisobutylate used in Example 1 as a polymerization initiator were mixed, whereby a monomer composition was prepared. The monomer composition was loaded into the aqueous medium, and the mixture was stirred with a TK-homomixer (manufactured by Tokushu Kika Kogyo) for 15 minutes, whereby a suspended dispersion liquid was prepared. Under a nitrogen atmosphere, the temperature of the above suspended dispersion liquid was increased to 85° C., and polymerization was initiated. Further, the liquid was held at the temperature for 24 hours, and a polymerization reaction was completed. After the completion of the reaction, the suspended dispersion liquid was cooled, separated by filtration, washed with water, and dried, whereby a styrene/n-butyl acrylate copolymer was obtained.

Workup

  1. customAn aqueous medium was prepared
  2. additionwere mixed
  3. customwhereby a monomer composition was prepared
  4. customwhereby a suspended dispersion liquid was prepared
  5. custompolymerization
  6. waitFurther, the liquid was held at the temperature for 24 hours
  7. customa polymerization reaction
  8. customAfter the completion of the reaction
  9. temperaturethe suspended dispersion liquid was cooled
  10. customseparated by filtration
  11. washwashed with water
  12. customdried

Sources & evidence

ORD record
ord-fe6b321617d14bbaaa1b5122fbeeac4c
Source dataset
uspto-grants-2015_03
Patent number
US08975000B2

Reaction notes

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