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US 4,728,702 AGranted
Method for the termination of living polymers and compounds suitable to that purpose
AssigneeEnichem Elastomeri S.r.l.
InventorsArnaldo Roggero, Tito Salvatori
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Abstract
Coupling agents suitable to be synthetized by cyclo-oligomerization of 3-methylbutyn-1-ol-3 with subsequent dehydration of the alcohol compounds, and their use in a method for the termination of living polymers obtained by means of the anionic polymerization of diene and/or vinylaromatic monomers.
Claims11
A method for the termination of living macroanions obtained by anionic polymerization of diene monomers containing 4 to 12 carbon atoms and/or vinylaromatic monomers containing 8 to 20 carbon atoms which comprises:
- adding to a polymerization mixture containing said macroanions an effective amount of a coupling agent of the formula:
- ##STR13## to terminate said living macroanions.
Dependencies are inferred from the claim text.