Hydridoboranes as Modifiers for Single‐Site Organochromium Catalysts: From Low‐ to Ultrahigh‐Molecular‐Weight Polyethylene

Abstract

Going to great lengths: The use of hydridoboranes as new modifiers for chromium-catalyzed olefin polymerization allows the preparation of polyethylene with a precisely tunable ultrahigh molecular weight. This effect can be understood by a reversible protection of the active catalyst by the borane (see scheme). Detailed facts of importance to specialist readers are published as ”Supporting Information”. Such documents are peer-reviewed, but not copy-edited or typeset. They are made available as submitted by the authors. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.