𝔖 Bobbio Scriptorium
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Polymerization of alkynes by ziegler-type catalyst

✍ Scribed by Watson, William H. ;McMordie, Warren C. ;Lands, Larry G.


Book ID
104531944
Publisher
John Wiley and Sons
Year
1961
Weight
418 KB
Volume
55
Category
Article
ISSN
0022-3832

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✦ Synopsis


Abstract

A study has been made of the polymerization of acetylene, propyne, and butyne‐1 using aluminum triisobutyl, n‐butyllithium, or zinc diethyl in combination with titanium tetrachloride as catalyst. Optimum conditions for polymerization were determined by varying the catalyst composition. The major product was a black insoluble polymer whose spectrum indicates a high degree of conjugation. A small quantity of soluble low molecular weight polymer was also obtained. Reactions were run at atmospheric pressure and 21–62Β°C.


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Mcthylmethacrylate and styrene were polymerized with Co(acac)3-A1Et~Br catalyst system in benzene at 40~ Rate of polymerization is linear to monomer concentrations. Maximum percent conversion of polymer was obtained when A1/Co~ 2 with styrene and A1/Co~3 with methylmethacrylate. With increase in agi