Procedure for the production of polymers and copolymers of isobutylene

Abstract

Abstract IN WHICH R IS HYDROGEN, CYCLOALKYL, OR ARYL; R'' IS A HYDROCARBON RADICAL SELECTED FROM THOSE LISTED FOR R; Y IS AN ATOM OF OXYGEN, OR OF SULPHUR, OR NITROGEN BOUND TO TWO HYDROCARBON RADICALS; AND X IS AN ATOM OF HALOGEN; AND (II) A CO-CATAYLST SELECTED FROM THE FOLLOWING: (A) BRONSTED ACIDS; (B) ALKYL HALOIDS, HALOIDS OF ORGANIC OR INORGANIC ACIDS, OR COMPOUNDS CONTAINING ATOMS OF ACTIVATED HALOGEN; (C) LEWIS ACIDS; AND (D) COMPOUNDS REPRESENTED BY THE FORMULA X''NMEY''M IN WHICH X'' IS AN ATOM OF HALOGEN, Y'' IS OXYGEN, SULPHUR OR A FUNCTIONAL GROUP SELECTED FROM THE ALKOXY, ESTER, AMIDE, ALKYL, CYCLOALKYL, AROMATIC, ARENE, PHOSPHINE, ACETYLACETONE AND OXIME RADICALS; ME IS A METAL CHOSEN FROM TI, SN, ZN, SI, B, AL, HG, PB, W, SB, GE, V, ZR, AS, BI AND MO; AND M AND N ARE WHOLE NUMBERS WHOSE SUM IS EQUAL TO THE VALENCY OF ME EXCEPT IN THE CASE IN WHICH Y IS OXYGEN OR SULPHUR, WHEN IT BECOMES 2M+N; AND WHEREIN THE MOLAR RATIO BETWEEN COMPOUND (II) AND COMPOUND (I) IS LESS THAN 1. 1. PROCESS FOR THE PRODUCTION OF COPOLYMERS OF ISOBUTYLENE AND A CONJUGATED DIENE, WHEREIN THE COPOLYMERIZATION REACTION IS CONDUCTED IN THE PRESENCE OF A CATALYST SYSTEM CONSISTING ESSENTIALLY OF: (I) A METALORGANIC COMPOUND OF ALUMINUM REPRESENTED BY THE FORMULA RAL(YR'')X

Inventors

• 👤 G Ferraris
• 👤 A Priola
• 👤 S Cesca

Bibliographic Details