Methyl Methacrylate → Methyl 2-methylprop-2-enoate;styrene

HRID 1741226Notes

Reaction equation

HRID 1741226 reaction equation
[CH2:1]=[CH:2][C:3]1[CH:8]=[CH:7][CH:6]=[CH:5][CH:4]=1.[C:9]([O:14][CH3:15])(=[O:13])[C:10]([CH3:12])=[CH2:11]>CO>[CH2:1]=[CH:2][C:3]1[CH:8]=[CH:7][CH:6]=[CH:5][CH:4]=1.[C:9]([O:14][CH3:15])(=[O:13])[C:10]([CH3:12])=[CH2:11]

Participants

4

Reactant 2

HCID 6658Methyl MethacrylateHCID 7501Styrene

Product 1

HCID 159984Methyl 2-methylprop-2-enoate;styrene

Reagents, catalysts & solvents 1

HCID 887MethanolSolvent

Procedure

A mixture consisting of 10.01 g of the PSt*-[1] obtained in Paragraph (1), 20.02 g of methyl methacrylate and 100 ml of toluene was subjected to a polymerization reaction under a nitrogen stream at 103° C. for 8 hours. After the reaction, the reaction mixture was poured into methanol and precipitated. The polymer deposited was collected by filtration and dried to obtain 24.17 g (yield 80.49%) of the objective block polymer as a white fibrous product. A GPC measurement revealed that this product had a number-average molecular weight of 61,020, a weight-average molecular weight of 147,251 and a degree of dispersion of 2.41. A 1H-NMR measurement using CDCl3 as a solvent for measurement revealed that the copolymer composition of this product was 63.33:36.67 as expressed in terms of styrene:methyl methacrylate ratio by weight.

Workup

  1. customwas subjected to a polymerization reaction under a nitrogen stream at 103° C. for 8 hours
  2. customAfter the reaction
  3. customprecipitated
  4. filtrationThe polymer deposited was collected by filtration
  5. customdried
  6. customto obtain 24.17 g (yield 80.49%) of the objective block polymer as a white fibrous product

Sources & evidence

ORD record
ord-446453218cf440ceb697c21b89a5411c
Source dataset
uspto-grants-1999_10
Patent number
US05973125

Reaction notes

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