Basell Polyolefine Gmbh

Basf Coatings Gmbh

Basell Polypropylen Gmbh

Bassell Polyelefine Gmbh

Markus Oberhoff

Volker Fraaije

Wolfgang Bidell

Andreas Winter

Shahram Mihan

Heinz-Peter Rink

Jörg Schottek

Roland Kratzer

David Fischer

Carsten Bingel

Joachim Wulff-Döring

Nicola Stefanie Paczkowski

Markus Schopf

Ralph-Dieter Maier

Jürgen Suhm

Horst Weiβ

Bernd Bachmann

Michael-Joachim Brekner

Yoshikuni Okumura

Werner-Alfons Jung

Horst Weiss

Jörg Ludwig Schulte

Günther Ott

Maria Silvia Tonti

Michael Hartung

Thomas Danner

Silke Przybilla

Andreas Bauder

Heinrich Wonnemann

J&ouml;rg Schottek

Dominik Stoll

Elisabeth Wessling

Karl-Heinz Grosse Brinkhaus

Beate Podlaski-Pyzik

Nicola Stephanie Paczkowski

Guenther Ott

Nicola (Hüsgen) Paczkowski

Carole Morcillo Ruiz

Martin Rieping

Jorg Schottek

Nicola Paczkowski

Jurgen Suhm

Jörg Schulte

The present invention relates to aqueous binder dispersions for cationic electrocoat materials, comprising as binders amine-modified, hydroxy-functional epoxy resins and comprising as crosslinker at least one fully blocked polyisocyanate blocked at least partly with 2,2-dimethyl-1,3-dioxolane-4-methanol, and also to the use of such cationic electrocoat materials for producing coating systems and to the use of crosslinkers based on polyisocyanates blocked with 2,2-dimethyl-1,3-dioxolane-4-methanol in aqueous binder dispersions.

Aqueous binder dispersions intended for cathodic electrocoat materials and comprising a crosslinker based on 2,2-dimethyl-1,3-dioxolane-4-methanol-blocked polyisocyanates

Method for producing a multicoat coating comprises: applying a primer-surfacer coat (I) to an optionally pretreated substrate, curing coat (I), applying a basecoat (II) to coat (I), optionally curing the basecoat (II), applying a clearcoat (III) to basecoat (II), and curing basecoat (II) and/or clearcoat (III), wherein coat (I) is obtained by applying a nonaqueous, solventborne coating material comprising by weight: at least 20% of at least one organic solvent, at least 8% of at least one first polyester (A1), having a glass transition temperature of at least 20&#xb0; C. and an acid number of 0 to 40 mg KOH/g; at least 8% by weight of at least one second polyester (A2), different from (A1) and having a glass transition temperature of not more than 10&#xb0; C.; at least one crosslinker (B); and at least 8% of one or more fillers and/or pigments (C).

Multilayer coating with a primer-surfacer of a nonaqueous coating material comprising at least two different polyesters

A process for the polymerization of olefins, in particular a process for the copolymerization of propylene with further olefins, is carried out in the presence of highly active catalyst systems comprising specifically selected metallocenes, in particular ones which bear different substituents in position 2 and position 4 on an indenyl ligand. Novel polypropylene copolymers can be obtained by this process.

Transition metal compound, ligand system, catalyst system and its use for the polymerization and copolymerization of olefins

Transition metal compound, ligand system, catalyst system and the use of the latter for polymerisation and copolymerisation of olefins

A process for polymerizing one or more alpha-olefins of formula CH&#x2550;CHT wherein T is a hydrogen atom or a C&#x2013;Calkyl radical comprising the following steps: a) contacting in a continuous way one or more of said alpha olefins with a metallocene based catalyst system in a loop reactor, wherein: (i) the reaction is carried out in a liquid medium; (ii) the average residence time of the metallocene-based catalyst system is not more than 30 minutes; (iii) the temperature of the loop ranges from 25&#xb0; to 70&#xb0; C.; in order to obtain a polymerization degree ranging from 60 to 500 g per gram of catalyst system; b) feeding in continuous the prepolymerized metallocene-based catalyst system obtained in step a) into a polymerization reactor C) polymerizing one or more alpha-olefins, the same or different from the alpha olefins used in step a), in the presence of said prepolymerized metallocene-based catalyst system.

Olefin polymerization process

Organometallic transition metal compounds of the formula (I) where Mis an element of group 3, 4, 5 or 6 of the Periodic Table of the Elements or the lanthanides; X are identical or different and are each halogen, hydrogen, C&#x2013;C-alkyl, C&#x2013;C-alkenyl, C&#x2013;C-aryl, alkylaryl or arylalkyl having from 1 to 10 carbon atoms in the alkyl part and from 6 to 22 carbon atoms in the aryl part, &#x2014;ORor &#x2014;NRR, where two radicals X may also be joined to one another or two radicals X may together form a substituted or unsubstituted diene ligand, in particular a 1,3-diene ligand; where Rand Rare each C&#x2013;C-alkyl, C&#x2013;C-aryl, alkylaryl, arylalkyl, fluoroalkyl or fluoroaryl each having from 1 to 10 carbon atoms in the alkyl radical and from 6 to 22 carbon atoms in the aryl radical; n is a natural number from 1 to 4 which is equal to the oxidation number of Mminus 2; Ris a C&#x2013;Cradical which is branched in the &#x3b1; position; Ris hydrogen or a C&#x2013;Cradical which may be branched or unbranched in the &#x3b1; position; R, Rand Rare identical or different and are each hydrogen or a C&#x2013;Cradical, where at least one of the radicals R, R, Ris not hydrogen; Ris a substituted or unsubstituted C&#x2013;C-aryl radical or C&#x2013;C-heteroaromatic radical containing at least one heteroatom selected from the group consisting of O, N, S and P; T is a divalent C&#x2013;Cgroup which together with the cyclopentadienyl ring forms a further saturated or unsaturated ring system having a ring size of from 5 to 12 atoms, where T may contain the heteroatoms Si, Ge, N, P, O or S withing the ring system fused onto the cyclopentadienyl ring; and Z is a bridge consisting of a divalent atom or a divalent group, can be used in catalyst systems for preparing polyolefins by polymerization or copolymerization of at least one olefin. Biscyclopentadienyl ligand systems which have such a substitution pattern and can be used for preparing these organometallic transition metal compounds are also provided 

Organometallic transition metal compound, biscyclopentadienyl ligand system, catalyst system and preparation of polyolefins

Catalyst solid for olefin polymerization comprising

Catalytic solid supported on calcined hydrotalcite for olefinic polymerisation

Catalyst system for olefin polymerization comprising

Catalyst system for carrying out olefin polymerization comprising a calcined hydro-talcite serving as a supporting material

Metallocene compound and polymerization catalyst comprising heterocyclic group

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Speyer, Germany

Markus Oberhoff