Other Addition Reactions to Double Bonds

OTHER ADDITION REACTIONS TO DOUBLE BONDS A. Ethyidnd Derivatives 

Besides the addition of halogens and hydrohalogens across the double bond just covered, there are many other reagents which will react similarly with unsaturated polymers by free radical, ionic, or radical-ion mechanisms. Of prime importance is the addition of ethylene derivatives to polydienes. One of the earliest reactions of natural rubber to be studied in detail was the combination with maleic anhydride [39]. Depending on the reaction conditions and the presence or absence of free radical initiators, one or more of four basic reactions may take place, with the products shown (the arrows indicate where the addition has taken place and the new bonds formed). 

Intramolecular addition to the double bond within polyisoprene chains  

Intermolecular addition to double bonds in different polymer chains. In this group should be included the statistically possible reaction between widely separated double bonds within the same molecule  

Addition to a-methylenic carbon atoms of a polyisoprene chain  

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VI. Other Addition Reactions to Double Bonds Vn. Oxidation Reactions of Polymers Vin. Functionalization of Polymers IX. Miscellaneous Chemical Reactions of Polymers X. Block and Graft Copolymerization References... 

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