Diblock copolymers and process of preparing same

Diblock copolymers, such as poly(styrene-b-isobutylene) are produced by carbenium ion mechanism, for example, isobutylene polymerization is initiated with a polystyrene molecule containing terminal tertiary bromine, and, diethylaluminum chloride as coinitiator. The resulting block copolymer can be r...

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Bibliographic Details
Main Authors KENNEDY; JOSEPH PAUL, MELBY; EARL GEORGE
Format Patent
LanguageEnglish
Published 30.11.1976
Subjects
CHEMISTRY
COMPOSITIONS BASED THEREON
GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC
GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS
MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS
METALLURGY
ORGANIC MACROMOLECULAR COMPOUNDS
TECHNICAL SUBJECTS COVERED BY FORMER USPC
TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ARTCOLLECTIONS [XRACs] AND DIGESTS
THEIR PREPARATION OR CHEMICAL WORKING-UP
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Summary:Diblock copolymers, such as poly(styrene-b-isobutylene) are produced by carbenium ion mechanism, for example, isobutylene polymerization is initiated with a polystyrene molecule containing terminal tertiary bromine, and, diethylaluminum chloride as coinitiator. The resulting block copolymer can be recovered by selective extraction.
Bibliography:Application Number: US19750588279