Abstract:
The invention relates to a method for transition metal-catalyzed production of aqueous dispersions containing (co)polyolefins or vinyl aromatic (co)polymers by reacting (co)monomers in the presence of a cationic complex of a late transition metal and optionally an ionic compound with a Brönsted acid as cation, a strong neutral Lewis acid or an ionic compound with Lewis acid cations as cocatalyst in an aqueous reaction medium.
Abstract:
The invention relates to complex compounds of general formula (Ia)(Ib)(Ic)(Id), wherein M is an element of groups 6 to 10 of the periodic table of the elements, preferably Ni. The invention also relates to a method for the production and of said compounds and to their use in the polymerization and copolymerization of olefins, for example in suspension polymerization methods, gaseous phase polymerization methods, mass polymerization methods or emulsion polymerization methods.
Abstract:
A method for the production of a catalyst system for the polymerisation of olefins is characterised in that one or several compounds of general formula (Ia) or (Ib) are deposited, then a molecularly defined activator of general formula (IIa to c) [(L H)] [(M')Q Q Q Q ]- (II a) [(CAr3)] [(M')Q Q Q Q ]- (II b) [(M')Q Q Q ] (II c) is added and finally an alkylating agent, selected from LiR R or A1R R R , is added.
Abstract:
A method for the production of a supported catalyst for the polymerisation of olefins is characterised in that one or several compounds of general formula (Ia or b), together with a molecularly defined activator of general formula (IIa to c); [(L-H)] [M')Q Q Q Q ]- IIa [(Car3)] [(M') Q Q Q Q ]- IIb [(M')Q Q Q ] IIc are deposited on a porous support, containing 2 10 wt. % water.
Abstract:
The invention relates to a method for producing aqueous copolymer dispersions of copolymers consisting of carbon monoxide and olefinically unsaturated compounds, by means of copolymerisation of carbon monoxide and olefinically unsaturated compounds in an aqueous medium in the presence of metallic complexes.
Abstract:
The invention relates to a method for the emulsion polymerization of one or more olefins by reacting a ligand according to the general formulae (Ia) to (Ic) or a mixture of at least two of the ligands (Ia) to (Ic), wherein M is a metal of the first group of the periodic table of elements or hydrogen, with a metal compound of the general formula (M(L )2 or M(L )2(L )z, wherein M is a transition metal of the 7 to 10 group of the periodic table of elements and preferably nickel, and immediately using the reaction product for the polymerization or copolymerization of olefins in water or in a solvent mixture that contains at least 50 % by volume of water, optionally in the presence of an activator and an emulsifier. The aqueous dispersions of polyolefins such as polyethylene and ethylene copolymerizates obtained according to the inventive method are suitable for applications in the paper industry such as paper coating or surface sizing, paint coatings, raw materials for adhesives, molded foams such as mattresses, textile or leather applications, carpet backings or pharmaceutical applications.
Abstract:
The invention relates to coordination compounds of the general formulae (Ia) to (Ib), wherein M=Ti, Zr, Hf, V, Nb or Ta. The invention also relates to a method for producing the metal complexes and to the use of the complexes so obtained for the polymerization and copolymerization of olefins. For example in suspension polymerization methods, gas phase polymerization methods and bulk polymerization methods
Abstract:
In metallocene complexes of a metal of transition group IV, V or VI of the Periodic Table, at least one substituted or unsubstituted cyclopentadienyl radical is bound to an element of group III of the Periodic Table which is in turn a constituent of a bridge between this cyclopentadienyl radical and the metal atom and bears an organonitrogen, organophosphorus or organosulfur group as sole further substituent.
Abstract:
A method for the production of a catalyst system for the polymerisation of olefins is characterised in that one or several compounds of general formula (Ia) or (Ib) are deposited, then a molecularly defined activator of general formula (IIa to c) [(L H)] [(M')Q Q Q Q ]- (II a) [(CAr3)] [(M')Q Q Q Q ]- (II b) [(M')Q Q Q ] (II c) is added and finally an alkylating agent, selected from LiR R or A1R R R , is added.
Abstract:
Metal complexes (I), obtained from a metal precursor of a group 6-10 metal in the 0 or +2 oxidation state and a ortho-phosphinylphenol, -aniline or analogous ligand (II) are new. Metal complexes (I), obtained from a metal precursor of a group 6-10 metal in the 0 or +2 oxidation state and a ortho-phosphinylphenol, -aniline or analogous ligand of formula (II) are new; R , R , R = hydrogen (H), arylalkyl, alkenyl, alkoxy, aryloxy, thioether, silyloxy OSiR R R , halogen, amino NR1oR or (substituted) alkyl, cycloalkyl or aryl; R = alpha -branched or alpha -substituted alkyl, arylalkyl, alkenyl(alkyl), cycloalkyl, (substituted) aryl, alkoxy, aryloxy, thioether, OSiR R R , halogen or NR R ; 2 adjacent R groups may = a ring; R , R = (substituted) alpha -branched 3-12 C alkyl or 3-12 C cycloalkyl; X = oxygen (O), sulfur (S), selenium (Se), imino (NR ), phosphino (P-R ) or arsino (As-R ); Y = H, an alkali metal cation, alkylacyl or arylacyl anion or SiR R R ; R = H, alkyl, benzyl or aryl; R R or R R may = a ring. The full definitions are given in the DEFINITIONS (Full Definitions) Field. Independent claims are also included for: (a) catalysts of (I) immobilized on a solid support for the polymerization of 1-olefins; (b) the polymerization of 1-olefins in the presence of (I) or these catalysts; (c) (co)polymers obtained by polymerizing 1-olefin(s) with (I) or the catalyst system; (d) molding compositions obtained from the (co)polymers for making films, sheets, waxes, fibers or hollow moldings.