Chemische Werke Huls Aktiengesellschaft

Chemische Werke Huels Aktiengesellschaft

Albert Frese

Walter Dittmann

Fritz Baxmann

Wolfgang Kilian

Johann Dietrich

Dieter Zerpner

Horst Denzel

Otto Hahmann

Johannes Dietrich

Jurgen Wolpers

Klaus Zur Nedden

Hans Datene

Hermann Roeben

Johannes Plenikowski

Hermann Roben

Helmut Klawitter

In a low pressure process for polymerizing ethene using a Ziegler mixed catalyst comprising (a) a titanium compound, a vanadium compound or a mixture thereof and (b) an aluminum-organic compound or a mixture thereof, an improvement is provided wherein the process is carried out in multi-stages comprising:

Process for the multi-stage polymerization of ethene

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.

Process for the production of extensively amorphous

As insulation for electric cables, there is provided an improved polyolefin having low shrinkage values, high elongation values, even after aging, the desired electrical insulation properties, and comprising partially crystalline, randomly copolymerized polypropylene having a proportion of ethylene, butene-1 and/or 1-hexene incorporated by polymerization of 1-6% by weight, a xylene-soluble proportion of 2-20% by weight, a viscosity value I of 200-400 cc./g., a melt flow index value (MFI.sub.190/5) of 1-20 g./10 min., and an elongation value of above 700%.

Random propylene copolymers for electric cable insulation

A polybutene-1 mixture which forms heat sealable, transparent film having good initial tear resistance and resistance to tear propagation are produced by polymerizing liquid butene-1 at 60.degree.-120.degree. C. employing as catalyst a dihalidefree mixture of diethylaluminum monochloride and TiCl.sub.3.nAlCl.sub.3 wherein n is 0.2 to 0.6, and isolating the unfractionated mixture of polymers.

Process for the production of polybutene-1 formable into transparent

Aqueous emulsions of olefin polymers and bitumen comprise:

Aqueous emulsions of polyolefins/bitumen plastic or plastic-elastic

High bulk density modification III of isotactic polybutene-1 is directly prepared by polymerizing butene-1 at 100.degree.-200.degree. C, preferably 140.degree.-160.degree. C., with a catalyst of: (a) titanium trichloride and (b) an alkyl aluminum compound.

Direct production of polymorph III of isotactic polybutene-1

Polyolefin rubber compositions which are readily heat-sealable are provided by the addition of 5-100 parts by weight, based on the polyolefin elastomer, of a propylene polymer uniformly admixed therewith prior to vulcanization which is selected from the group consisting of polypropylene and copolymers of propylene with up to 20% by weight of ethylene, butene-1 or hexene-1 which polymer has a heptane-extractable portion of 5-60%, and I-value measured according to DIN 53 728 of 100-600 cm.sup.3 /g. and a yield point measured according to DIN 53 735 of 10-30 N/mm.sup.2.

Heat-sealable vulcanizates comprising polyolefin rubber and propylene

Butene-1 optionally in the presence of up to 10% by weight of propene or like comonomer, is polymerized in excess butene-1 or liquid C.sub.4 fraction at 60.degree.-120.degree. C. to form a polybutene suitable for forming transparent films by employing as the polymerization catalyst (a) TiCl.sub.3 . nAlCl.sub.3 (n = 0.2 to 0.6) and (b) a mixture of 85 - 99.9 molar percent of dialkyl aluminum monochloride and 0.1 - 15 molar percent of trialkyl aluminum.

Process for the production of partially crystalline polybutene-1

Films, sheets, molded components and parts of other shaped articles formed from a plastomer or elastomer are bonded together or to a substrate employing as an adhesive an adhesive composition heated to 50.degree.-250.degree. C. and consisting essentially of:

Process for the bonding of films and molded components

For preparing crystalline, thermoplastic, low-pressure terpolymers of ethene with 0.1-5 mol % butene-1 and 0.1-3 mol % butene-2 having a density of 0.94-0.96 g./cm.sup.3, a liquid phase monomer mixture consisting essentially of ethene, 0.05-10 mol % butene-1 and 20-98.9 mol % butene-2 is polymerized with a mixed polymerization catalyst comprising (a) TiCl.sub.3 . nAlCl.sub.3 wherein n is 0.2-0.6, and (b) isoprenylaluminum in a molar ratio Al : Ti of about 2-20 to form said terpolymer.

Process for the production of crystalline terpolymers of ethene,

Polypropylene can be polymerized with Ziegler-Natta TiCl.sub.3 or TiCl.sub.3 . (AlCl.sub.3).sub.0.2.sub.-0.6 plus chlorine containing organoaluminum compound mixed catalyst using butene-2 or a C.sub.4 -cut comprising butene-2 as the polymerization solvent without the formation of propylene-butene copolymers.

Process for the production of isotactic polypropylene

High molecular weight, low density copolymers of ethylene and propylene and/or butene-1 are prepared by a low pressure liquid phase polymerization process using a titanium halide - organoaluminum catalyst in a polymerization solvent containing butene-2. Consistently comparable ethylene copolymers can be obtained from monomer mixtures of varying composition.

Low pressure process for the production of low density co- and

In a low pressure process for the production of crystalline propene-ethene-butene-1 terpolymers with 0.2 to 10% by weight of ethene and 0.2 to 5% by weight of butene-1 with the aid of mixed catalysts of TiCl.sub.3 or TiCl.sub.3 .sup.. n AlCl.sub.3 (n = 0.2 to 0.6), and chlorine-containing organoaluminum compounds, the improvement comprising conducting the polymerization in butene-2 or in a C.sub.4 -cut containing 20-99% butene-2, containing 0.1 - 2.5% of butene-1, with the addition of 0.2 to 10% of ethene, based on the amount of propene employed.

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Marl, Germany

Albert Frese