Methyl Methacrylate → HCID 22003389, compound

HRID 1413063Notes

Reaction equation

HRID 1413063 reaction equation
[C:1]([O:4][CH:5]=[CH2:6])(=[O:3])[CH3:2].[C:7]([O:12][CH3:13])(=[O:11])[C:8]([CH3:10])=[CH2:9]>>[C:1]([O:4][CH:5]=[CH2:6])(=[O:3])[CH3:2].[C:7]([O:12][CH3:13])(=[O:11])[C:8]([CH3:10])=[CH2:9]

Participants

3

Reactant 2

HCID 6658Methyl MethacrylateHCID 7904Vinyl Acetate2×

Product 1

HCID 22003389HCID 22003389, compound

Procedure

Finely divided vinyl acetate-methyl methacrylate copolymer is prepared exactly as described in Example 1 except that in place of the vinyl acetate there is used a 75:25 mixture of vinyl acetate and methyl methacrylate and the heating temperature is maintained in the range of 75° to 85° C. After the postheating period, 60 parts of unreacted vinyl acetate is removed by evaporation with about 180 parts of the hydrocarbon solvent so that the ratio of the monomers in the polymer is about 68:32. The resulting dispersion has a solids content of 52.4% and the particle size of 0.41 micron. The reduced specific viscosity of the polymer is 1.54 which corresponds to a molecular weight of approximately 217,000. The polymer has a glass transition temperature of 38° C.

Workup

  1. temperaturethe heating temperature is maintained in the range of 75° to 85° C
  2. customAfter the postheating period, 60 parts of unreacted vinyl acetate is removed by evaporation with about 180 parts of the hydrocarbon solvent so that the ratio of the monomers in the polymer

Sources & evidence

ORD record
ord-30dcc838c3004ec89683243238027826
Source dataset
uspto-grants-1981_02
Patent number
US04248746

Reaction notes

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