Liq. co polymers of conjugated dienes - prepd using catalyst contng. org. nickel cpd. and alkyl aluminium halide or an organometallic cpd. halo cpd. mixture

摘要

Liquid polymer for use in paints, and as intermediate for synthetic perfumes and plasticisers, is pref. by polymsg. a conj. diene, opt. together with an aromatic vinyl cpd., and 0.01-100 mole ethylene or propylene per mol diene in the presence of a catalyst consisting of (1) a nickel carboxylate, an org. nickel complex, tetracarbonyl-nickel, or an organonickel cpd. with a pi-bond and (2) an alkylaluminium halide of formula RnA1X3-n (where R is alkyl, phenyl, or aralkyl; X is chloride, bromine or iodine; and n is 1-2) or (3) a combination of (a) an organometal cpd. of formula A1R1R2R3, (R)2Mg, (R)2Zn or RLi, (where R1 is H, fluorine, alkyl, cycloalkyl, aryl or aralkyl; and R, R2R3 are each alkyl, cycloalkyl, aryl or aralkyl), and (b) a halogen cpd. selected from chlorides, bromides or iodides of group III, IV, V or VI metals, or their ether, ester, or aldehyde complexes, or halides of aliphatic or alicyclic hydrocarbons, alkynyl halides, chlorine- or bromine-contg. ketones, cpds. of formula RCH=CHCHC2X (where R is H or aliphatic hydrocarbyl; and X is chloride, bromine or iodine), or cpds. of formula I:- (where R1 is chlorine, bromine or iodine; R2 and R3 are each H, chlorine, bromine, iodine, haloalkyl or alkyl). Process gives polymers with a very loq mol. wt. even at temps. 60 degrees C e.g. high yields of a polymer with a mol. wt. of 280. The mol. wt. can be controlled by varying the amount of propylene and there is no gel formation.