The present invention relates to a method for consecutively producing at least two different polyethylene resins in one slurry loop reactor, comprising producing a first polyethylene resin in the presence of a Ziegler-Natta and/or a Chromium catalyst, and consecutively producing a second polyethylene resin in the presence of a metallocene catalyst, characterized in that the ratio of the melt flow index of the first produced polyethylene resin to the melt flow index of the second produced polyethylene resin is at least 0.3.

The present invention relates to a polymerization-initiating agent for acrylic adhesives containing an epoxidized silane.

A method of manufacturing a coordination compound of a rare-earth element includes mixing an oxide of a rare-earth element, a ligand, a C.sub.1-3 carboxylic acid, and a C.sub.2-6 anhydride to react to form water and a coordination compound of a rare-earth element; and removing the C.sub.1-3 carboxylic acid to obtain the coordination compound of a rare-earth element having a water content of less than 100 ppm.

A method of manufacturing a coordination compound of a rare-earth element includes mixing an oxide of a rare-earth element, a ligand, a C.sub.1-3 carboxylic acid, and a C.sub.2-6 anhydride to react to form water and a coordination compound of a rare-earth element; and removing the C.sub.1-3 carboxylic acid to obtain the coordination compound of a rare-earth element having a water content of less than 100 ppm.

The present invention relates to a phthalate free Ziegler-Natta catalyst component for olefin polymerization, prepared in the presence of a diglycidylester compound in combination with one or more internal electron donors. The catalyst components, according to present invention, produce polypropylene polymers having higher stereo-regularity with high melt flow rate than polymers produced with catalyst components not including a diglycidylester compound.

The present invention relates to a phthalate free Ziegler-Natta catalyst component for olefin polymerization, prepared in the presence of a diglycidylester compound in combination with one or more internal electron donors. The catalyst components, according to present invention, produce polypropylene polymers having higher stereo-regularity with high melt flow rate than polymers produced with catalyst components not including a diglycidylester compound.

A 1,4-cis polydiene formed by polymerizing at least a 1,3-butadiene monomer in the presence of a lanthanide catalyst system and a bis-diene additive.

A 1,4-cis polydiene formed by polymerizing at least a 1,3-butadiene monomer in the presence of a lanthanide catalyst system and a bis-diene additive.