Styrene → Alpha-Methylstyrene

HRID 1395700Notes

Reaction equation

HRID 1395700 reaction equation
[Sb:1]=[O:2].O=[Si]=O.[O-2].[O-2].[O-2].[Sb+3].[Sb+3].[CH2:11]=[CH:12][C:13]1[CH:18]=[CH:17][CH:16]=[CH:15][CH:14]=1.[C:19](#[N:22])[CH:20]=[CH2:21]>>[Sb:1]=[O:2].[CH3:11][C:12]([C:13]1[CH:18]=[CH:17][CH:16]=[CH:15][CH:14]=1)=[CH2:19].[C:19](#[N:22])[CH:20]=[CH2:21]

Participants

8

Reactant 5

HCID 7501StyreneHCID 7855AcrylonitrileHCID 14794Antimony TrioxideHCID 24261SilicaHCID 6327673Stibanal2×

Product 3

HCID 7407Alpha-MethylstyreneHCID 7855AcrylonitrileHCID 6327673Stibanal

Procedure

An aqueous colloidal dispersion of antimony oxide sold by Nyacol, Inc., Ashland, Mass. under the trade name Nyacol A-1530, containing 30 weight percent antimony oxide was added to an aqueous anionic latex containing 40 weight percent of polybutadiene grafted with 20 parts of an interpolymer containing 70 percent styrene and 30 percent acrylonitrile per 100 parts of polybutadiene and was stirred to provide a uniform blend. The procedure of Example 1 was then carried out to obtain a blend of rubber-occluded antimony oxide in an interpolymer of α-methylstyrene and acrylonitrile. The ratio of styrenic interpolymer to "ungrafted" polybutadiene to colloidal antimony was 22:8:1.

Workup

  1. additionwas added to an aqueous anionic
  2. customto provide a uniform blend

Sources & evidence

ORD record
ord-e2ba974a21ee4401b002e2e5b6287130
Source dataset
uspto-grants-1980_05
Patent number
US04205142

Reaction notes

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