Ethylene, alpha-olefin and norbornene terpolymer prepn. - in soln. using catalyst contg. vanadium cpd., ethyl aluminium sesquichloride and perchloro crotonic acid deriv.(NL200177)

摘要

High mol. wt. partly crystalline satd. terpolymers, which can be used also in unvulcanised condition, consist, by wt., of 60-94 (65-90)% ethylene, 4-10 (5-8)% alpha-olefine, pref. propylene and 2-30 (5-27)% bicyclo (2,2,1)-heptene-2-. They are prepd. by polymerising the monomers in an inert organic solvent at 40-80 (50-60) degrees C in the presence of a catalyst. The terpolymers contain 3-20 wt. % ethylene sequence, measured by IR-spectroscopy at 728-730 cm-1; have av. mol. wt. (Mn) 20000 and non-uniformity U 1-2. (I) are used for prepn. of films which resist atmos. conditions and temps. =80 degrees C. The terpolymers have improved strength, elongation, modulus and elasticity. Process is effected with low catalyst component concns., esp. low quantities of expensive V cpd.