公开(公告)号：US3822242A

公开(公告)日：1974-07-02

申请号：US16662571

申请日：1971-07-27

申请人： BRIDGESTONE TIRE CO LTD

发明人： SAKATA R ,  YAMAMOTO A ,  KIKUCHI M ,  HAYAKAWA Y ,  AOKI T ,  ODAKA F ,  KAWAGOE T ,  YAMAMOTO K ,  YOKOMIZO Y ,  OHNISHI A ,  IRAKO K

IPC分类号： C08F220/44 ,  C08F236/04 ,  C08F236/12 ,  C08D1/14 ,  C08D1/07

CPC分类号： C08F236/04 ,  C08F220/44 ,  C08F236/12 ,  Y10S526/903 ,  C08F4/68

摘要： A INVENTION LIES IN A PROCESS FOR MANUFACTURING AN ALTERNATING COPOLYMER OF BUTADIENE AND ACRYLONITRILE IN SUSPENSION PHASE UNDER THE FOLLOWING CONDITIONS IN COMBINATION. IN THE FIRST PLACE, THE CATALYST SYSTEM COMPRISES IN COMBINATION (A) (1) AT LEAST ONE OF ORGANOALUMINUM HALIDES OR (2) AT LEAST TWO OF ALUMINUM AND ZINC COMPOUNDS IN COMBINATION, AND (B) A VANADIUM COMPOUND SOLUBLE IN A HYDDROCARBON. SECONDLY THE SUSPENSION MEDIUM IS ANY ONE SELECTED FROM THE GROUP CONSISTING OF (I) SATURATED ALIPHATIC HYDROCARBONS, (II) SATURATED ALICYCLIC HYDROCARBONS, (III) SATURATED HYDROCARBON HALIDES AND (IV) AROMATIC HYDROCARBONS EACH OF WHICH HAS A BOILING POINT LOWER THAN 150*C. THE ACCUMULATIVE TOTAL OF THE PRODUCTS OF THE SQUARE ROOT OF THE COHEERENT ENERGY DENSITY AND OF THE VOLUME FRACTION WITH RESPECT TO EACH OF THE MONOMERS AND THE MEDIUM MUST FALL IN THE RANGE OF 6 TO 9.1. FINALLY IT IS NECESSARY TO ADD A STABILIZER AS COMPRISING AT LEAST ONE SELECTED FROM THE GROUP CONSISTING OF ALIPHATIC AND ALICYCLIC ZINC CARBOXYLATES HAVING 8 TO 24 CARBON ATOMS AND AN INACTIVE INORGANIC POWDERY MATERIAL OF A DIMENSION SMALLER THAN 100U.