Methyl 2-methylprop-2-enoate;styrene → Styrene
Reaction equation
[C:1]1([C:7]2C=C(C(C)(C)C3C=CC=CC=3)C=C(C(O)=O)[C:8]=2O)[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1.[O-2].[Al+3].[O-2].[O-2].[Al+3].[CH3:31][C:32]([C:34]([O:36][CH3:37])=[O:35])=[CH2:33].C=CC1C=CC=CC=1>>[CH2:8]=[CH:7][C:1]1[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1.[C:34]([O:36][CH3:37])(=[O:35])[C:32]([CH3:33])=[CH2:31]Participants
5
Procedure
100 parts of 3-phenyl-5-(α,α-dimethylbenzyl) salicylic acid was mixed by the use of Nauta mixer with 50 parts of aluminum oxide, 50 parts of styrene-methyl methacrylate copolymer which was obtained by the polymerization of 80% styrene and 20% methyl methacrylate and had a molecular weight of about 2,000 and 20 parts of an aqueous solution of 10% polyvinyl alcohol. The resultant mixture was heated and kneaded in an extruder set to 140° C. to obtain a homogeneous mass. The mass was pulverized with a grinder to form finely divided particles of color developer, 85% of which was passed through 300 mesh Tyler standard screen. The water content of the color developer was 2% on the total dry basis.
Sources & evidence
- ORD record
- ord-c4d52703fb864ef79102e7f2bc2093d3
- Source dataset
- uspto-grants-1979_01
- Patent number
- US04134847
Reaction notes
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