Abstract: Provided is a propylene polymer composition capable of implementing a molded article containing excellent impact resistance. Provided is a propylene polymer composition containing components (A) to (C), satisfying all of requirements (1) to (5), (A) a propylene polymer containing 90 wt % or more of a propylene structural unit; (B) an ethylene-?-olefin copolymer or hydrogenated conjugated diene polymer containing more than 10 wt % and 99 wt % or less of an ethylene structural unit; (C) a propylene block copolymer or graft copolymer containing a propylene polymer segment and an ethylene-?-olefin copolymer segment or a hydrogenated conjugated diene polymer segment; (1) an intrinsic viscosity being 0.5 dl/g or more; (2) CXIS having a number average molecular weight of 40,000 or more; (3) a ratio of the number average molecular weight of CXIS to a number average molecular weight of CXS being 0.

Abstract: Provided is a propylene polymer composition capable of implementing a molded article containing excellent impact resistance. Provided is a propylene polymer composition containing components (A) to (C), satisfying all of requirements (1) to (5), (A) a propylene polymer containing 90 wt % or more of a propylene structural unit; (B) an ethylene-?-olefin copolymer or hydrogenated conjugated diene polymer containing more than 10 wt % and 99 wt % or less of an ethylene structural unit; (C) a propylene block copolymer or graft copolymer containing a propylene polymer segment and an ethylene-?-olefin copolymer segment or a hydrogenated conjugated diene polymer segment; (1) an intrinsic viscosity being 0.5 dl/g or more; (2) CXIS having a number average molecular weight of 40,000 or more; (3) a ratio of the number average molecular weight of CXIS to a number average molecular weight of CXS being 0.

Abstract: A process for selectively producing 1-butene comprises contacting at least one antifouling agent with at least one aluminum alkyl compound to form at least one antifouling compound in a first step. The antifouling compound may comprise a structure comprising a central aluminum molecule bound to an R1 group, bound to an R2 group, and bound to an R3 group. The process further comprises feeding the antifouling compound, an additional amount of the aluminum alkyl compound, at least one titanate compound, and ethylene into a reactor to dimerize ethylene in a second step. The titanate compound is fed as a stream separated from the streams of the antifouling compound and the additional amount of the aluminum alkyl compound. The molar ratio of the sum of the aluminum alkyl compound to the titanate compound is equal to or higher than 1.5 and equal to or lower than 3.0.

Abstract: A process for selectively producing 1-butene comprises contacting at least one antifouling agent with at least one aluminum alkyl compound to form at least one antifouling compound in a first step. The antifouling compound may comprise a structure comprising a central aluminum molecule bound to an R1 group, bound to an R2 group, and bound to an R3 group. The process further comprises feeding the antifouling compound, an additional amount of the aluminum alkyl compound, at least one titanate compound, and ethylene into a reactor to dimerize ethylene in a second step. The titanate compound is fed as a stream separated from the streams of the antifouling compound and the additional amount of the aluminum alkyl compound. The molar ratio of the sum of the aluminum alkyl compound to the titanate compound is equal to or higher than 1.5 and equal to or lower than 3.

Abstract: A modified solid polyalkylaluminoxane is provided, which is capable of providing ?-olefin suppressing adhesion of any polymer produced as a by-product onto the reactor wall and the stirrer, and which is capable of providing a highly active olefin oligomerization reaction catalyst. An olefin oligomerization reaction catalyst containing the modified solid polyalkylaluminoxane is also provided. The modified solid polyalkylaluminoxane for olefin oligomerization reactions contains structural units represented by general formula (a) and structural units represented by general formula (b), whose median diameter is equal to or larger than 0.1 ?m and equal to or smaller than 50 ?m, in which R? in the general formula (a) represents an alkyl group having 1 to 20 carbon atoms, and R? in the general formula (b) represents a halogenated alkoxy group having 1 to 20 carbon atoms or a halogenated aryloxy group having 6 to 20 carbon atoms.

Abstract: A modified solid polyalkylaluminoxane is provided, which is capable of providing ?-olefin suppressing adhesion of any polymer produced as a by-product onto the reactor wall and the stirrer, and which is capable of providing a highly active olefin oligomerization reaction catalyst. An olefin oligomerization reaction catalyst containing the modified solid polyalkylaluminoxane is also provided. The modified solid polyalkylaluminoxane for olefin oligomerization reactions contains structural units represented by general formula (a) and structural units represented by general formula (b), whose median diameter is equal to or larger than 0.1 ?m and equal to or smaller than 50 ?m, in which R? in the general formula (a) represents an alkyl group having 1 to 20 carbon atoms, and R? in the general formula (b) represents a halogenated alkoxy group having 1 to 20 carbon atoms or a halogenated aryloxy group having 6 to 20 carbon atoms.