Sulfuric Acid → Acrylic acid methacrylic acid

HRID 931881Notes

Reaction equation

HRID 931881 reaction equation
[C:1]([OH:5])(=[O:4])[CH:2]=[CH2:3].[C:6]([OH:11])(=[O:10])[C:7]([CH3:9])=[CH2:8].N(C(C1NCCN=1)(C)C)=NC(C1NCCN=1)(C)C.S(=O)(=O)(O)O>O>[C:1]([OH:5])(=[O:4])[CH:2]=[CH2:3].[C:6]([OH:11])(=[O:10])[C:7]([CH3:9])=[CH2:8]

Participants

6

Reactant 4

HCID 1118Sulfuric AcidHCID 4093Methacrylic AcidHCID 6581Acrylic AcidHCID 887152,2'-Azobis(2-(2-imidazolin-2-yl)propane)

Product 1

HCID 11600707Acrylic acid methacrylic acid

Reagents, catalysts & solvents 1

HCID 962WaterSolvent

Conditions

Temperature
85 °C

Procedure

Thereafter, a mixture of 66.88 parts by mass of acrylic acid and 53.27 parts by mass of methacrylic acid, and a solution of 15.49 parts by mass of 2,2′-azobis[2-(2-imidazolin-2-yl)propane] and 12.14 parts by mass of concentrated sulfuric acid dissolved in 80.00 parts by mass of deionized water, were simultaneously poured into the flask over 60 minutes. The mixture was kept warm at 85° C. for 2 hours to complete the polymerization reaction, and then the resultant was cooled and taken out. Thus, an acrylic acid/methacrylic acid copolymer was obtained. The non-volatile component fraction was measured, and it was 40% by mass. Furthermore, the molecular weight of the acrylic acid/methacrylic acid copolymer thus obtained was measured by the method described above, and the weight average molecular weight was 8,900 (relative to polyethylene glycol standards).

Workup

  1. additionwere simultaneously poured into the flask over 60 minutes
  2. customthe polymerization reaction
  3. temperaturethe resultant was cooled

Sources & evidence

ORD record
ord-997630a84118439b95263edafa68a8e5
Source dataset
uspto-grants-2016_03
Patent number
US09299573B2

Reaction notes

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