Process for the production of extensively amorphous butene-1-propene-ethene terpolymers having a high softening point
AssigneeChemische Werke Huels Aktiengesellschaft
InventorsJohannes Dietrich, Walter Dittmann, Albert Frese, Wolfgang Kilian
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Abstract
A process for preparing an extensively amorphous butene-1-propene-ethene terpolymer having a high softening point comprises low pressure solution polymerizing butene-1, propene and ethene by contacting these monomers with a catalytically effective amount of a mixed catalyst of a thermally unstable crystalline TiCl.sub.3 .multidot.0.30 to 0.35 AlCl.sub.3 and a trialkyl aluminum or dialkyl aluminum hydride, each having alkyl groups of 2-4 carbon atoms, the atomic ratio of Al:Ti being 0.8-4.0.
Claims8
A process for preparing an extensively amorphous butene-1-propene-ethene terpolymer having a high softening point of 90.degree.-135.degree. C. comprising low pressure solution polymerizing 25-76% by weight of butene-1, 24-70% by weight of propene and 0.1-20% by weight of ethene by contacting these monomers with a catalytically effective amount of a mixed catalyst of a thermally unstable, crystalline TiCl.sub.3 .multidot.0.030 to 0.35 AlCl.sub.3 prepared by the reduction of TiCl.sub.4 with Al, and a trialkyl aluminum or dialkyl aluminum hydride, each having alkyl groups of 2-4 carbon atoms, the atomic ratio of Al:Ti being 0.8-4.0 whereby said extensively amorphous terpolymer is produced.
Dependencies are inferred from the claim text.