Abstract: An epoxy-modified polyolefin wax, which consists of a low-molecular-weight polyolefin grafted, copolymerized and modified with an epoxy group-containing, ethylenically unsaturated compound and has a number average molecular weight of from 600 to 10,000 and an epoxy equivalent of from 200 to 100,000, is disclosed.This epoxy-modified polyolefin wax is very valuable as a modifier for improving brittleness or adhesion (adhesiveness) in various resins, especially thermosetting resins.

Abstract: An epoxy-modified polyolefin wax, which consists of a low-molecular-weight polyolefin grafted, copolymerized and modified with an epoxy group-containing, ethylenically unsaturated compound and has a number average molecular weight of from 600 to 10,000 and an epoxy equivalent of from 200 to 100,000, is disclosed.This epoxy-modified polyolefin wax is very valuable as a modifier for improving brittleness or adhesion (adhesiveness) in various resins, especially thermosetting resins.

Abstract: An improved process for the polymerization of olefins in the presence of catalyst consisting essentially of:(A) a titanium trichloride composition obtained by micro-pulverizing a titanium trichloride component prepared by reduction of titanium tetrachloride with a member selected from the group consisting of hydrogen, silicon, metallic titanium and metallic aluminum, in the presence of a complex of aluminum chloride or aluminum bromide with an electron-donor selected from the group consisting of oxygen-containing organic compounds, nitrogen-containing organic compounds and phosphorus-containing organic compounds, the amount of the complex being 0.005 to 0.5 mole per mole of the titanium trichloride component, and extracting the micro-pulverized titanium trichloride component with a solvent selected from the group consisting of saturated aliphatic hydrocarbons, aromatic hydrocarbons and halogenated aromatic hydrocarbons; and(B) an organoaluminum compound,And the catalyst therefor.

Abstract: An improved process for the polymerization of olefins in the presence of catalyst consisting essentially of:A. a titanium trichloride composition obtained by micro-pulverizing a titanium trichloride component prepared by reduction of titanium tetrachloride with a member selected from the group consisting of hydrogen, silicon, metallic titanium and metallic aluminum, in the presence of a complex of aluminum chloride or aluminum bromide with an electron-donor selected from the group consisting of oxygen-containing organic compounds, nitrogen-containing organic compounds and phosphorus-containing organic compounds, the amount of the complex being 0.005 to 0.5 mole per mole of the titanium trichloride component, and extracting the micro-pulverized titanium trichloride component with a solvent selected from the group consisting of saturated aliphatic hydrocarbons, aromatic hydrocarbons and halogenated aromatic hydrocarbons; andB. an organoaluminum compound, and the catalyst therefor.