Abstract: A process for the solution polymerization of volatile monomers in a reactor equipped with an agitator to cause splashing and droplet formation to reduce volatile monomer accumulation in the vapor space.

Abstract: Olefins are polymerized under solution polymerization conditions in the presence of the solid catalytic product resulting from removing the liquid components from the product resulting from admixing in an inert diluent and in an atmosphere which excludes moisture and oxygen (A) at least one hydrocarbon soluble organomagnesium compound; (B) at least one organic hydroxyl-containing compound; (C) at least one reducing halide source; (D) at least one transition metal (Tm) alkoxide.

Abstract: A process for blanking a reaction mixture utilizing as a blanking agent a difunctional lithium composition.

Abstract: Olefins are polymerized under solution polymerization conditions in the presence of the solid catalytic product resulting from removing the liquid components from the product resulting from admixing in an inert diluent and in an atmosphere which excludes moisture and oxygen (A) at least one hydrocarbon soluble organomagnesium compound; (B) at least one organic hydroxyl-containing compound; (C) at least one reducing halide source; (D) at least one transition metal (Tm) alkoxide.

Abstract: A catalyst for polymerizing olefins is the product resulting from mixing in an inert hydrocarbon diluent, a mixture of (A) an inorganic oxide, (B) an organomagnesium material, (C) an organic hydroxyl-containing material, (D) a reducing halide source, and (E) a transition metal compound.

Abstract: A catalyst for polymerizing olefins is the product resulting from mixing in an inert hydrocarbon diluent, a mixture of (A) an inorganic oxide, (B) an organomagnesium material, (C) an organic hydroxyl-containing material, (D) a reducing halide source, and (E) a transistion metal compound.

Abstract: Olefins are polymerized under slurry conditions in the presence of a cocatalyst and a catalyst prepared by a method wherein a mixture (A) containing the product resulting from mixing in an inert hydrocarbon diluent (1) a hydrocarbon soluble magnesium alkyl compound, (2) an aliphatic alcohol and (3) a titanium compound is reacted with (B) a reducing halide source. Components (A) and (B) are mixed at a constant initial temperature. When the concentration of components (A) and (B) in said hydrocarbon solvent is relatively low and when the ratio of the number of moles of aliphatic alcohol:total number of hydrocarbyl groups attached to the metal atom in component (1) is relatively low, the resultant polymer has a relatively small average particle size and a relatively narrow particle size distribution.

Abstract: A method for preparing Ziegler catalysts is disclosed wherein a mixture (A) containing the product resulting from mixing in an inert hydrocarbon diluent (1) a hydrocarbon soluble magnesium alkyl compound in said hydrocarbon solvent, (2) an aliphatic alcohol or carbon dioxide and (3) a titanium compound is reacted with (B) a reducing halide source in said hydrocarbon solvent. Components (A) and (B) are mixed at a constant initial temperature. When the magnesium concentration in component (A) and the metal concentration in component (B) are relatively low, the resultant polymer has a relatively narrow particle size distribution whereas when said concentration is relatively high, the resultant polymer has a relatively broad particle size distribution. When the ratio of the number of moles of aliphatic alcohol:total number of hydrocarbyl groups attached to the metal atom in component (1) is relatively low, the resultant polymer has a relatively small average particle size.