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Norbornene derivatives exo,endo-2-[2-(3,5-di-tert-butyl-4-hydroxyphenoxy)-acetoxy]methyl-5-norbornene(M1) and 3,3,5,5-tetramethyl-4-piperidinyl 5-norbornene-exo,endo-2-carboxylate(M2)were synthesized and polymerized by RuCl_2(=CHPh)(PCy_3)_2 to prepare a novel kind of bi-functional polymer bearing sterically hindered phenol(SHP)and hindered amine(HLAS)groups via ring-opening metathesis polymerization(ROMP).The resulting copolymers were characterized by gel permeation chromatography(GPC),~1H-NMR and differential scanning calorimetry(DSC).The number average molecular weight(M_n)and functional unit content of the resulting copolymer could be regulated by varying the concentration of catalyst and monomer feed.
Norbornene derivatives exo, endo-2- [2- (3,5-di-tert-butyl-4- hydroxyphenoxy) -acetoxy] methyl-5-norbornene (M1) and 3,3,5,5-tetramethyl-4- piperidinyl 5-norbornene-exo, endo-2-carboxylate (M2) were synthesized and polymerized by RuCl_2 (= CHPh) (PCy_3) _2 to prepare a novel novel bi- functional polymer bearing sterically hindered phenol (SHP) and hindered amine HLAS) groups via ring-opening metathesis polymerization (ROMP). The resulting copolymers were characterized by gel permeation chromatography (GPC), ~ 1H-NMR and differential scanning calorimetry of the resulting copolymer could be regulated by varying the concentration of catalyst and monomer feed.