Water → Styrene

HRID 1266000Notes

Reaction equation

HRID 1266000 reaction equation
[CH2:1]=[CH:2][C:3]1[CH:8]=[CH:7][CH:6]=[CH:5][CH:4]=1.[C:9]([OH:14])(=[O:13])[C:10](C)=[CH2:11].[CH3:15][O:16][CH2:17]CO.[OH2:20]>>[CH2:1]=[CH:2][C:3]1[CH:8]=[CH:7][CH:6]=[CH:5][CH:4]=1.[C:17]([O:16][CH3:15])(=[O:20])/[CH:11]=[CH:10]\[C:9]([O-:14])=[O:13]

Participants

6

Reactant 4

HCID 962WaterHCID 4093Methacrylic Acid2×HCID 7501StyreneHCID 80192-Methoxyethanol

Product 2

HCID 7501StyreneHCID 21768182Mono-methyl maleate

Procedure

In the case of a solution polymerization, for example, 23 parts of styrene, 24 parts of methacrylic butyl, 23 parts of methacrylic acid, and 10 parts of a polyethylene glycol monomethyl ester of methacrylic acid are fed in water-soluble solvent (e.g., butyl cellosolve) at 80 to 140° C. under an ambient nitrogen atmosphere, and are pre-mixed. The mixture is then copolymerized for 4 to 5 hours with dripping a polymerization initiator, then 20 parts of the AD copolymer (e.g., obtained from 10 parts of styrene and 10 parts of monomethyl maleate) is added to the mixture, and is heated and stirred for 2 to 8 hours.

Workup

  1. customIn the case of a solution polymerization
  2. additionare pre-mixed
  3. customcopolymerized for 4 to 5 hours

Sources & evidence

ORD record
ord-6159cbb21363498d89b5a4fbccf6a164
Source dataset
uspto-grants-2003_04
Patent number
US06548460B1

Reaction notes

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