| 摘要 |
ATACTIC COPOLYMERS DERIVED FROM AN ALPHA-OLEFIN, OPTIONALLY ETHYLENE AND A NON- CONJUGATED DIENE ARE PROVIDED. THE UNITS DERIVED FROM THE DIENE PROVIDE PENDANT GROUPS HAVING INTERNAL OR TERMINAL DOUBLE BONDS. SUITABLE DIENES FOR PREPARING SUCH COPOLYMERS INCLUDE:CH2=C(R 1)-R2-C(R3)=CH2,CH2=C(R 1)-R4-C(R3) =CH-CH3 WHEREIN R1 AND R3 ARE INDEPENDENTLY SELECTED FROM HYDROGEN OR AN ALKYL GROUP,R2 AND R4 ARE ALKYLENE MOIETIES HAVING A CHAIN LENGTH OF AT LEAST 3 CARBON ATOMS AND AT LEAST 1 CARBON ATOM RESPECTIVELY, OR A DIENE HAVING A CYCLIC RING WITH ONE STRAINED RING DOUBLE BOND AND A SUBSTITUENT ON THE RING OF THE FORMULAE:=CR5R6-CR7=CH2 WHEREIN R5 AND R6 AND R7 ARE INDEPENDENTLY SELECTED FROM HYDROGEN OR A C1-C3 ALKYL.ALSO PROVIDED ARE PROCESSES FOR THE FUNCTIONALISATION OF THE ATACTIC COPOLYMERS AND THEIR USE AS LUBRICATING OIL ADDITIVES. |
