Ticona Gmbh

Mitsui Petrochemical Ind. Ltd.

Other

E.i. Dupont De Nemours and Company

Hoechst Aktiengesellschaft

Mitsui Petrochemical Industries, Ltd.

Targor Gmbh

Alexandra Jacobs

Freddy Helmer-Metzmann

Wilfried Hatke

Thomas Weller

Michael Riedel

Klaus Berger

Dieter Ruchatz

Volker M&ouml;rs

Gerhard Fink

Wolfgang Anton Herrmann

Stefan Wulf

Toshio Shiwaku

Hans-Ulrich Simmrock

Markus Morawietz

Bennett Ward

Knut Gr&auml;f

Benett Clayton Ward

The present invention relates to an absorbent comprising at least one cycloolefin copolymer which contains polymerized units which are derived from at least one cyclic and at least one acyclic olefin.

Method for absorbing contaminants

The present invention relates to a polymer composition comprising one or more cycloolefin copolymers and one or more suitably formulated additives, having improved resistance to stress cracking in air or else in contact with media which give rise to stress cracking.

Stress cracking-resistant cycloolefin copolymer composition

Method for producing a coating powder composition

The invention relates to a process for the production of spherical, polyester particles, wherein the particle size can be exactly adjusted in the range of 1 to 200 &mgr;m and a particle size distribution with a span (&equals;d90&minus;d10/d50)&lE;1.5, as well as the use of the produced particles for toner compositions in electrophotographic and direct printing systems and powder coatings.

Manufacturing methods, based on non aqueous dispersion techniques, to produce spherical polyester particle size distributions and tailorable mean particle sizes

The invention relates to a method for producing a cycloolefin copolymer by polymerization of 0.1-99.9 wt. %, with respect to the total amount of monomers, of at least one polycyclic olefin, 0-99.9 wt. %, with respect to the total amount of monomers, of at least one monocyclic olefin, 0.1-99.9 wt. %, with respect to the total amount of monomers, of at least one acyclic 1-olefin, in the presence of a catalyst system consisting of at least one cocatalyst and at least one metal coordination complex with taut geometry.

Method for producing a cycloolefin copolymer

The invention relates to a method for producing a cycloolefin copolymer by polymerization of 0.1-99.0 wt %, with respect to the total amount of monomers, of at least one polycyclic, 0-99.9 wt. %, with respect to the total amount of monomers, of at least one moncyclic olefin, and 0.1-99.9 wt. %, with respect to the total amount of monomers, of at least one acyclic 1-olefin, in the presence of a catalyst system consisting of at least one cocatalyst and at least one metallocene.

Method for producing cycloolefin polymers

Polymer foams

The present invention relates to a polymer blend comprising one or more cycloolefin copolymers and one or more types of core-shell particles or one or more copolymers which are composed to some extent of rubbers with low glass transition temperatures, or a combination of one or more types of core-shell particles and of one or more copolymers which are composed to some extent of rubbers with low glass transition temperatures.

Polymer blend

Absorbents

The present invention relates to a metallocene compound of the formula I, ##STR1## where Cp is an unsubstituted or substituted cyclopentadienyl group, Ind is unsubstituted or substituted indenyl, M is a tetravalent metal, R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are, independently of one another, identical or different and are each a hydrogen atom or a C.sub.1 -C.sub.20 -hydrocarbon radical, R.sup.5 and R.sup.6 are, independently of one another, identical or different and are each a hydrogen atom or a C.sub.1 -C.sub.20 -hydrocarbon radical, m is 1 or 2 and k and l are 1 when m is 1 when m is 1 and k and l are zero when m is 2. The metallocene compound is suitable as a catalyst component for olefin polymerization.

Metallocene compound

The present invention relates to a process for preparing a cycloolefin copolymer by polymerization of at least one cyclic olefin and at least one acyclic olefin in the presence of a catalyst comprising at least one metallocene compound of the formula I, ##STR1## where L is a .pi.-ligand, L' is a .pi.-ligand, T is a bridge between L and L', M is a tetravalent transition metal, m is 1 or 2 and R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are, independently of one another, identical or different and are each a hydrogen atom or a C.sub.1 -C.sub.20 -hydrocarbon radical.

Process for preparing a cycloolefin copolymer

Growing community of inventors

Niedernhausen, Germany

Alexandra Jacobs