The invention relates to a diorganomagnesium compound of formula R.sup.B—Mg—R.sup.A, R.sup.B being different from R.sup.A, R.sup.B comprising a benzene nucleus substituted with a magnesium atom, one of the carbon atoms of the benzene nucleus ortho to the magnesium being substituted with a methyl, an ethyl, an isopropyl or forming a ring with the carbon atom which is its closest neighbour and which is meta to the magnesium, the other carbon atom of the benzene nucleus ortho to the magnesium being substituted with a methyl, an ethyl or an isopropyl, R.sup.A being an alkyl, a cycloalkyl or a benzyl, which may be substituted or unsubstituted, which diorganomagnesium compound is other than n-butylmesitylmagnesium. When used as co-catalyst of a metallocene, it makes it possible to increase the functional group content in the synthesis of a functional polymer.

The invention relates to a diorganomagnesium compound of formula R.sup.B—Mg—R.sup.A, R.sup.B being different from R.sup.A, R.sup.B comprising a benzene nucleus substituted with a magnesium atom, one of the carbon atoms of the benzene nucleus ortho to the magnesium being substituted with a methyl, an ethyl, an isopropyl or forming a ring with the carbon atom which is its closest neighbour and which is meta to the magnesium, the other carbon atom of the benzene nucleus ortho to the magnesium being substituted with a methyl, an ethyl or an isopropyl, R.sup.A being an alkyl, a cycloalkyl or a benzyl, which may be substituted or unsubstituted, which diorganomagnesium compound is other than n-butylmesitylmagnesium. When used as co-catalyst of a metallocene, it makes it possible to increase the functional group content in the synthesis of a functional polymer.

The invention relates to a diorganomagnesium compound of formula R.sup.B—Mg—R.sup.A, R.sup.B being different from R.sup.A, R.sup.B comprising a benzene nucleus substituted with a magnesium atom, one of the carbon atoms of the benzene nucleus ortho to the magnesium being substituted with a methyl, an ethyl, an isopropyl or forming a ring with the carbon atom which is its closest neighbour and which is meta to the magnesium, the other carbon atom of the benzene nucleus ortho to the magnesium being substituted with a methyl, an ethyl or an isopropyl, R.sup.A being an alkyl, a cycloalkyl or a benzyl, which may be substituted or unsubstituted, which diorganomagnesium compound is other than n-butylmesitylmagnesium. When used as co-catalyst of a metallocene, it makes it possible to increase the functional group content in the synthesis of a functional polymer.

A polymer blend comprises a copolyether-ester copolymer and the reaction product of a polyacrylate copolymer with an aminosilane. Further provided herein are methods of producing the polymer blend and articles that comprise the polymer blend.

A polymer blend comprises a copolyether-ester copolymer and the reaction product of a polyacrylate copolymer with an aminosilane. Further provided herein are methods of producing the polymer blend and articles that comprise the polymer blend.

Optical elements and compositions are provided which include an extruded polymer, and a plurality of fluorophores disposed within. The fluorescent compositions have quantum yields greater than 50% and are stable in performance over long durations of time under oxygen, moisture, and light exposure. In some embodiments, the extruded polymer is prepared as pellets, microparticles, nanoparticles, or films.

Optical elements and compositions are provided which include an extruded polymer, and a plurality of fluorophores disposed within. The fluorescent compositions have quantum yields greater than 50% and are stable in performance over long durations of time under oxygen, moisture, and light exposure. In some embodiments, the extruded polymer is prepared as pellets, microparticles, nanoparticles, or films.

The present invention relates to a process for polymerizing ethylene-1-butene copolymers in a solution polymerization process by firstly modelling polymer systems for solution polymerization of ethylene-1-butene copolymers and then transferring pressure and temperature conditions from said modelled polymer systems to a solution polymerization process to ensure that the polymerized ethylene-1-butene copolymer is completely solved in the solvent during the polymerization process.

The present invention relates to a process for polymerizing ethylene-1-butene copolymers in a solution polymerization process by firstly modelling polymer systems for solution polymerization of ethylene-1-butene copolymers and then transferring pressure and temperature conditions from said modelled polymer systems to a solution polymerization process to ensure that the polymerized ethylene-1-butene copolymer is completely solved in the solvent during the polymerization process.

The present disclosure provides a composition. In an embodiment, the composition is an ethylene-based polymer composition formed by high pressure (greater or equal to 100 MPa) free radical polymerization. The composition includes ethylene monomer and a mixture of hydrocarbon-based molecules. Each hydrocarbon-based molecule includes three or more internal alkene groups.