Copolymers prepared by using both anionic polymerization techniques and coordination catalysts

   
   

A process for forming a copolymer comprising the steps of (i) preparing a living polymer segment by using anionic polymerization techniques, (ii) modifying the living polymer by reacting it with an alkyl metal halide to form an organometallic polymeric intermediate, and (iii) preparing a second polymer segment from the organometallic polymeric intermediate by combining the intermediate, conjugated diene monomer, and a coordination catalyst that will polymerize the conjugated diene monomer.

Un proceso para formar un copolímero que abarcaba los pasos (i) que preparaban de un segmento vivo del polímero usando técnicas aniónicas de la polimerización, (ii) modificando el polímero vivo reaccionándolo con un halide alkyl del metal para formar un intermedio polimérico organometallic, y (iii) preparando un segundo segmento del polímero del intermedio polimérico organometallic combinando el intermedio, conjugó el monomer del diene, y un catalizador de la coordinación que polimerizará el monomer conjugado del diene.

 
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