Methacrylic Acid → Methacrylic Acid

HRID 1662925Notes

Reaction equation

HRID 1662925 reaction equation
[Na:1].[CH2:2]1[O:4][CH2:3]1.[C:5]([OH:10])(=[O:9])[C:6]([CH3:8])=[CH2:7].[CH2:11]=[CH:12][C:13]1[CH:18]=[CH:17][CH:16]=[CH:15][CH:14]=1.[C:19]([OH:24])(=[O:23])[C:20]([CH3:22])=[CH2:21].[C:25]([O:29][CH2:30][CH2:31][CH2:32][CH3:33])(=[O:28])[CH:26]=[CH2:27].S(OOS([O-])(=O)=O)([O-])(=O)=O.[NH4+].[NH4+]>O>[CH:11]([CH2:7][C:6](=[CH2:8])[C:5]([OH:10])=[O:9])=[CH:12][C:13]1[CH:18]=[CH:17][CH:16]=[CH:15][CH:14]=1.[C:25]([O:29][CH2:30][CH2:31][CH2:32][CH3:33])(=[O:28])[CH:26]=[CH2:27].[Na:1].[CH2:3]1[O:4][CH2:2]1.[C:19]([OH:24])(=[O:23])[C:20]([CH3:22])=[CH2:21]

Participants

10

Reactant 6

HCID 4093Methacrylic AcidHCID 7501StyreneHCID 8846Butyl AcrylateHCID 62648Ammonium Persulfate2×HCID 5360545SodiumHCID 21880491Methacrylic acid ethylene oxide

Product 3

HCID 4093Methacrylic AcidHCID 6354Ethylene OxideHCID 86591398Styrene-methacrylic acid butyl acrylate sodium

Reagents, catalysts & solvents 1

HCID 962WaterSolvent

Conditions

Temperature
75 °C

Procedure

In a vessel equipped with a stirrer and a thermometer, 683 parts of distilled water, 11 parts of sodium salt of sulfate ester of methacrylic acid ethylene oxide adduct (ELEMINOL RS-30, manufactured by Sanyo Chemical Industries, Ltd.), 83 parts of styrene, 83 parts of methacrylic acid, 110 parts of butyl acrylate, and 1 part of ammonium persulfate were charged and stirred at 400 rpm for 15 minutes. Then, the temperature of the solution was increased up to 75° C., and the solution was subjected to reaction for 5 hours. In the vessel, 30 parts of 1% ammonium persulfate was further added and matured at 75° C. for 5 hours to obtain a dispersion liquid of a copolymer of styrene-methacrylic acid-butyl acrylate-sodium salt of sulfuric acid ester of ethylene oxide adduct of methacrylic acid. The volume average particle diameter of the dispersion liquid of fine resin particle, which was measured by a laser particle size distribution analyzer LA-920, was 105 nm. A part of the dispersion liquid of fine resin particle was dried to isolate a resin component, and then a glass transition temperature (Tg) and molecular mass of the resin component were measured. The resin component had a glass transition temperature (Tg) of 59° C. and a mass average molecular mass of 150,000.

Workup

  1. customIn a vessel equipped with a stirrer
  2. customthe solution was subjected to reaction for 5 hours
  3. waitmatured at 75° C. for 5 hours

Sources & evidence

ORD record
ord-6c8fd34fd99345a9931d73b9671c0742
Source dataset
uspto-grants-2011_10
Patent number
US08034521B2

Reaction notes

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