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dehydrohalogenation

   Also found in: Wikipedia 0.01 sec.
dehydrohalogenation [dē¦hī·dro‚hal·ə·jə′nā·shən]
(chemistry)
Removal of hydrogen and a halogen from a compound.


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Crosslinking efficiency of polymer radicals in halogenated elastomers is typically reduced through dehydrohalogenation reactions.
The synthesis of spirobifluorenyl-substituted PPV [15] by the dehydrohalogenation of 1,4-bis(bromomethyl)-2-(2'-ethylhexyloxy)-5-(2"-((2"',7"'-di-tert-butyl)-9",9"'-spirobifluorenyl)) benzene using large excess of potassium tert-butoxide is one example of the Gilch procedure.
When zinc oxide is used to crosslink halobutyl rubber, carbon-carbon bonds are formed through dehydrohalogenation which result in a compound with a very stable crosslink system, good retention of aged properties and a low compression set.
 
 
 
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