Abstract: A catalyst system obtainable by the process comprising the steps of contacting an adduct of formula (I) MgT2.yAlQj(OR?)3-j ??(I) wherein T is chlorine, bromine, or iodine; R? is a linear or branched C1-C10 alkyl radical; y ranges from 1.00 to 0.05; and j ranges from 0.01 to 3.00; with at least one metallocene compound having titanium as central metal and at least one ligand having a cyclopentadienyl skeleton.

Abstract: The invention pertains to an alignment layer capable of aligning liquid crystal material, the alignment layer comprising: a first sublayer having regions capable of aligning the liquid crystal material in a first alignment, a second sublayer having regions capable of aligning the liquid crystal material in a second alignment, the first and the second alignment being different, the second sublayer overlaying the first sublayer and covering in accordance with a pre-determined pattern the first sublayer to provide, at desired locations, second sublayer regions capable of aligning the liquid crystal material and, at desired locations, regions of the underlying first sublayer that are not covered by the second sublayer, and to a method of making this alignment layer. The invention further relates to an optical or electro-optical device comprising said alignment layer.

Abstract: This invention relates to a hydrogel based on a copolymer comprising (a) at least one monomer comprising covalently bound iodine or bromine, and; (b) at least one hydrophilic monomer, wherein the hydrogel, when fully hydrated, has an elastic modulus between 0.01-100 MPa at 37° C. The invention also relates to a prosthetic nucleus comprising the hydrogel according to the invention and a method for making the prosthesis.

Abstract: A supported catalyst system comprising the product obtainable by contacting an adduct of formula (I) MgT2a.yAlQj(OU)3-j??(I) wherein T is chlorine, bromine, or iodine; U is a linear or branched C1-C10 alkyl radical, y ranges from 6.00 to 0.05; j ranges from 3 to 0.1; Q substituents, are hydrocarbon radicals containing from 1 to 20 carbon atoms; with at least one compound selected from the compounds of formula (II), (III) and (IV) wherein M1 is a transition metal atom selected from Groups 3-11 of Periodical Table; each R1, R2, R3, R4, R5 and R8 is a hydrogen atom, a halogen atom or a hydrocarbon group; L and L1 are divalent or trivalent hydrocarbon groups; T1 is a Lewis base; A1 and A2 are oxygen sulfur or nitrogen containing groups and X is hydrogen halogen or hydrocarbon group.

Abstract: The present invention is to a chain of polyurethane, polyurethaneurea and/or polyurea segmented copolymer wherein the polyurethane, polyurethaneurea and/or polyurea segments contain a chain extender having an amide segment, an ester segment, or a combination of amide and ester segments.

Abstract: The invention relates to a catalyst system for the selective trimerization of olefins, which system is based on a titanium complex of formula (Cp-B(R)nAr)TiR13, wherein: Cp is a cyclopentadienyl type ligand, optionally substituted, B is a bridging group, based on a single atom selected from the groups 13 to 16 inclusive of the Periodic System, Ar is a aromatic group, optionally substituted, R is, independently, hydrogen, or a hydrocarbon residue, optionally being substituted and optionally containing heteroatoms, or groups R and B are joined together to form a ring, n is an integer equal to the (valency of B minus 2), and R1 is a mono-anionic group, and further comprises an activator. The present catalyst system obviates the use of toxic chromium compounds.

Abstract: The invention relates to a catalyst component and a catalyst system for the preparation of high molecular weight ethylene or alpha-olefin homopolymers, ethylene-alpha-olefin copolymers, terpolymers or tetrapolymers, in a polymerization process, which is expediently effected in solution, at elevated temperature, preferably at least 80 DEG C. The catalyst system comprises a group 4-6 metal, preferably group 4 metal, a cyclic ligand (such as a cyclopentadienyl-type ligand), which forms a delocalized pi-bond with the metal M, a monohapto bonded 1,3-diaza-2-imino heterocyclic ligand (such as an iminoimidazolidine-type ligand) and anionic ligands and a catalyst activator coupound.