Diastereoselective Synthesis, Molecular Structure, and Solution Dynamics ofmeso- andrac-[Ethylenebis(4,7-dimethyl-η5-1-indenyl)]zirconium Dichloride Isomers and Chain Transfer Reactions in Propene Polymerization with theracIsomer

1996 ◽  
Vol 15 (23) ◽  
pp. 5046-5059 ◽  
Author(s):  
Luigi Resconi ◽  
Fabrizio Piemontesi ◽  
Isabella Camurati ◽  
Davide Balboni ◽  
Angelo Sironi ◽  
...  
Keyword(s):  
Molecular Structure ◽  
Chain Transfer ◽  
Transfer Reactions ◽  
Diastereoselective Synthesis ◽  
Propene Polymerization ◽  
Solution Dynamics

Incorporation of Antioxidant Groups into Polydienes. I. Via Chain Transfer Reactions of Symmetrical Dithiodiphenols

1977 ◽  
Vol 50 (4) ◽  
pp. 641-649 ◽  
Author(s):  
A. H. Weinstein
Keyword(s):  
Chain Transfer ◽  
Chain Transfer Agent ◽  
Transfer Reactions ◽  
Oxygen Absorption ◽  
Transfer Activity ◽  
Transfer Agents

Abstract A number of substituted symmetrical dithiodiphenols and related monothio-and trithiodiphenols were prepared and characterized. Some of these dithiodiphenols showed chain transfer activity either in bulk styrene or in emulsion diene polymerizations. The fact that phenolic sulfide units were incorporated into polyisoprene and polybutadiene by use of one of these compounds, 2,2′-dithiobis(6-t-butyl-p-cresol), as chain transfer agent was confirmed by ultraviolet analysis. It was demonstrated that selfresistance to oxidation was incorporated into various diene homo- or copolymers, to varying degree, by use of some of these dithiodiphenols as chain transfer agents, on the basis of oxygen absorption tests on preextracted polymers.

Electron Transference in Free Radical Chain Transfer Reactions

Nature ◽  
1964 ◽  
Vol 202 (4933) ◽  
pp. 690-691 ◽  
Author(s):  
JAY K. KOCHI ◽  
DENNIS D. DAVIS
Keyword(s):  
Free Radical ◽  
Chain Transfer ◽  
Transfer Reactions ◽  
Radical Chain
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