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Fremgangsmåde til fremstilling af additionspolymere af umættede dicarboxylsyremonoestere af N-(hydroxyalkyl)- eller N-(hydroxylalkyl-oxyalkyl)-1,3-cyclodiazolidin-2-oner.
Fremgangsmåde til fremstilling af basiske dihydrodimethylanthracener, dibenzocycloheptadiener og dibenzocycloheptatriener eller syreadditionssalte deraf.
Fremgangsmåde til fremstilling af 5-(γ-aminopropyliden)-5H-dibenzo[a,d]-10,11-dihydrocycloheptener og 5-(γ-aminopropyliden)-5H-dibenzo[a,d]-cycloheptener.