| 摘要 |
95-65 parts of styrene and 5-35 parts acrylonitrile are continuously copolymerized by passing them for 15 minutes to 3 hours between two diathermic walls at a reaction temperature between about 130 DEG and 180 DEG C., the ratio S1/e between the heat exchange surface S1 of the two walls and the thickness e of the monomer mixture passing therebetween per unit volume of the mixture being at least 0,2cm-2 in cgs units, collecting at the output end a mixture comprising at least 30% copolymer of a k value (Fikentscher) between 50 and 80 and separating the copolymer from the mixture. The monomers may be fed to the annular space between two concentric cylinders, both of which are subjected to the action of a heat regulation fluid, the space being between 0,2 and 3,2 cm. Apparatus for carrying out the process is described. |
