公开(公告)号：US3850894A

公开(公告)日：1974-11-26

申请号：US30690072

申请日：1972-11-15

申请人： SNAM PROGETTI

发明人： GIUSTI P ,  FERRARIS G ,  BASSAREDDA M ,  PRIOLA A ,  CESCA S

IPC分类号： C08F4/00 ,  C08F4/42 ,  C08F210/12 ,  C08F236/08 ,  C08D1/26 ,  C08D3/04 ,  C08D3/10

CPC分类号： C08F210/12 ,  C08F4/52

摘要： 1. PROCESS FOR THE PRODUCTION OF BUTYL RUBBER THROUGH THE COPOLYMERIZATION OF ISOLBUTYLENE AND ISOPRENE WHEREIN THE IMPROVEMENT COMPRISES CONDUCTING THE COPOLYMERIZATION IN THE PRESENCE OF A CATALYTIC SYSTEM CONSISTING ESSENTIALLY OF: (A) A METALORGANIC COMPOUND OF ALUMINUM REPRESENTED BY THE FORMULA AIR3 OR AIR2X WHEREIN X IS A HALOGEN ATOM; R IS A HYDROCARBON RADICAL WITH FROM 1 TO 10 CARBON ATOMS OR HYDROGEN; AND (B) A HALOID OF AN ORGANIC ACID OR THIOACID REPRESENTED BY THE GENERAL FORMULA

R''-C(=Y)-X''

IN WHICH X'' IS A HALOGEN ATOM; R'' IS AN ALKYLIC RESIDUE, CYCLOALKYLIC, ALKYLARYLIC, ALKYLCYCLOALKYLIC, OR IS EQUAL TO X'' OR IS REPRESENTED BY THE FORMULA

-C(=Y)-X''

AND Y IS OXYGEN OR SULPHUR.