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一种用于超高相对分子质量聚乙烯合成的高活性 Ni(II)-三(金刚烷基)膦催化剂。

A highly active Ni(II)-triadamantylphosphine catalyst for ultrahigh-molecular-weight polyethylene synthesis.

机构信息

Welch Center for Excellence in Polymer Chemistry, Department of Chemistry, University of Houston, Houston, TX, 77024-5003, USA.

出版信息

Nat Commun. 2019 Jan 25;10(1):438. doi: 10.1038/s41467-019-08309-8.

DOI:10.1038/s41467-019-08309-8
PMID:30683873
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC6347634/
Abstract

Here we report that the tri-1-adamantylphosphine-nickel complex [AdPNiBr][AdPH] upon activation with an alkylaluminoxane catalyzes the polymerization of ethylene to ultrahigh-molecular-weight, nearly linear polyethylene (M up to 1.68 × 10 g mol) with initial activities reaching 3.7 million turnovers per h at 10 °C. Copolymerizations of ethylene with α-olefins such as 1-hexene and 1-octadecene, as well as tert-butyldimethyl(dec-9-en-1-yloxy)silane give the corresponding copolymers with no decrease in activity.

摘要

在这里，我们报告三(1-金刚烷基)膦-镍配合物 [AdPNiBr][AdPH] 在烷基铝氧烷的活化下，催化乙烯聚合生成超高分子量、近乎线性的聚乙烯（M 高达 1.68×106gmol），在 10°C 时初始活性达到 370 万转化数/小时。乙烯与α-烯烃如 1-己烯和 1-十八烯，以及叔丁基二甲基（癸-9-烯-1-基氧基）硅烷的共聚反应，活性没有降低，得到相应的共聚物。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/aead/6347634/5115eca7e891/41467_2019_8309_Fig3_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/aead/6347634/632046cd346e/41467_2019_8309_Fig1_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/aead/6347634/141e9ae2c6ec/41467_2019_8309_Fig2_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/aead/6347634/5115eca7e891/41467_2019_8309_Fig3_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/aead/6347634/632046cd346e/41467_2019_8309_Fig1_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/aead/6347634/141e9ae2c6ec/41467_2019_8309_Fig2_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/aead/6347634/5115eca7e891/41467_2019_8309_Fig3_HTML.jpg

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