[CH2:1]=[CH:2][C:3]1[CH:8]=[CH:7][CH:6]=[CH:5][CH:4]=1.[CH2:9]([C:11]1[C:12]([NH:14][C:15](=[O:17])[CH:16]=1)=[O:13])[OH:10].[OH-].C[N+](C)(C)C.N.C=CC1C=CC=CC=1.C1(=O)NC(=O)C=C1>C1(=O)CCCCC1.O.CN(C=O)C.CO>[CH2:9]([C:11]1[C:12]([NH:14][C:15](=[O:17])[CH:16]=1)=[O:13])[OH:10].[CH2:1]=[CH:2][C:3]1[CH:8]=[CH:7][CH:6]=[CH:5][CH:4]=1
Styrene methylol maleimide copolymer was prepared by copolymerizing styrene (0.9 g) with methylol maleimide 1.0 g) in 10 ml cyclohexanone at 70° C. using azobis-isobutylronitrile as an initiator for a period of 3 hours. The polymer was isolated by trituration of the solid, cooled reaction mixture with methanol. A sample of the polymer was examined by 1H/NMR (proton nuclear magnetic resonance) and found to have a spectrum consistent with the assigned composition. An IR spectrum of a film prepared from DMF solution showed a band in the region where OH stretching is expected. The polymer was found to be insoluble in water, but soluble in dilute tetramethyl ammonium hydroxide solution. A film treated with ammonia vapor gave an IR spectrum which no longer had the band associated with the --CH2OH group but which conformed to the spectrum of maleimide styrene copolymer.
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