Azobisisobutyronitrile → Styrene acrylic acid copolymer

HRID 1259843Notes

Reaction equation

HRID 1259843 reaction equation
C(OC(C)COC)(=O)C.N(C(C)(C)C#N)=NC(C)(C)C#N.[CH2:22]=[CH:23][C:24]1[CH:29]=[CH:28][CH:27]=[CH:26][CH:25]=1.[C:30]([OH:34])(=[O:33])[CH:31]=[CH2:32].C(C1C=CC(O)=CC=1)(C1C=CC=CC=1)(C)C>>[CH2:22]=[CH:23][C:24]1[CH:29]=[CH:28][CH:27]=[CH:26][CH:25]=1.[C:30]([OH:34])(=[O:33])[CH:31]=[CH2:32]

Participants

6

Reactant 5

HCID 6547AzobisisobutyronitrileHCID 6581Acrylic AcidHCID 7501StyreneHCID 7946Propylene glycol methyl ether acetateHCID 117424-Cumylphenol

Product 1

HCID 22481611Styrene acrylic acid copolymer

Conditions

Temperature
80 °C

Procedure

432 g of propylene glycol monomethyl ether acetate and 13 g of azobisisobutyronitrile were added in a five-neck reaction container having an inside volume of 1 l and the mixture was heated to 80° C. while blowing nitrogen gas into the container. Then, a mixed solution of 86.3 g of styrene, 11.8 g of acrylic acid and 10.0 g of an EO-modified (meth)acrylate of paracumylphenol was added dropwise to the mixture over 2 hours. 6.5 g of azoisobutyronitrile was added to the mixture 30 minutes after the addition was finished, and the resulting mixture was heated further for 5 hours to obtain a styrene/acrylic acid copolymer. The obtained styrene/acrylic acid copolymer had a weight average molecular weight of 3000.

Workup

  1. customreaction container
  2. additionafter the addition
  3. temperaturethe resulting mixture was heated further for 5 hours

Sources & evidence

ORD record
ord-bfdc3cf8376c4cbf89e0f346d50b649b
Source dataset
uspto-grants-2013_06
Patent number
US08467018B2

Reaction notes

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