Acrylic Acid → 2-Propenoic acid, polymer with ethenylbenzene and ethyl 2-propenoate

HRID 1155982Notes

Reaction equation

HRID 1155982 reaction equation
[CH2:1]=[CH:2][C:3]1[CH:8]=[CH:7][CH:6]=[CH:5][CH:4]=1.[C:9]([OH:13])(=[O:12])[CH:10]=[CH2:11].[C:14]([O:19][CH2:20][CH2:21]C[Si](OC)(OC)OC)(=[O:18])[C:15](C)=[CH2:16].C=CC1C=CC=CC=1.C(OCC)(=O)C=C>>[CH2:1]=[CH:2][C:3]1[CH:8]=[CH:7][CH:6]=[CH:5][CH:4]=1.[C:14]([O:19][CH2:20][CH3:21])(=[O:18])[CH:15]=[CH2:16].[C:9]([OH:13])(=[O:12])[CH:10]=[CH2:11]

Participants

5

Reactant 4

HCID 6581Acrylic AcidHCID 7501StyreneHCID 173183-(Trimethoxysilyl)propyl methacrylateHCID 168267Ethyl prop-2-enoate--ethenylbenzene (1/1)

Product 1

HCID 1683902-Propenoic acid, polymer with ethenylbenzene and ethyl 2-propenoate

Procedure

A styrene/ethyl acrylate/acrylic acid copolymer emulsion was prepared using 384 g of a mixed monomer feed (39.7, 59.6, 0.7% by weight respectively) fed to a reaction vessel. The temperature was maintained at 60°±2° C. until polymerization was complete, using a redox system. 56.8 g of a mixture of styrene, acrylic acid and γ-methacryloxypropyl trimethoxy silane (81.3, 16.9, 1.8% by weight respectively) was then added to the polymer emulsion and polymerised under similar conditions. By this manner a shell of polymer containing Si-OH or Si-OCH3 groups in the chain around a core of styrene/ethyl acrylate copolymer was obtained.

Workup

  1. customfed to a reaction vessel
  2. temperatureThe temperature was maintained at 60°±2° C. until polymerization
  3. custompolymerised under similar conditions
  4. customwas obtained

Sources & evidence

ORD record
ord-ad865e4476084410846e512a832834c9
Source dataset
uspto-grants-1982_06
Patent number
US04333867

Reaction notes

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