... Itr(SO;)J s6'' 1, at; Sa' 11i.,rirg o,:: moi sor)Suy ra ns6a = n: (112 ) ne nhrong = ( l/2)n" nhin == 0,5,iffimu6i : 111 11 * fii56a : 16,3 + 0,55 x 96 ... D.24,56 gamCdu 21: Caosu Buna-N duoc tao rs do phen ung d6ng trung hop girl'a buta-'|,3-dien vd acrilonitrin (CH,=Q11-CNJ. O6tch6y hoan todn caosu Buna-N v0i kh6ng ... thri clLroc nrot loai caosu Buna Nchira 13.0U40/i, khoi ltltrng Itittr.'l'i le v0s6 ntiit xiclt giilzr buta l.j clien li l,cril,r rriirin trong caosu tuongLrrrg lii rA....