PROPYLENE-ETHYLENE-1-BUTENE TERPOLYMER AND METHOD FOR PRODUCING THE SAME

• Main Authors: SOGA KAZUKI, IWAI NOBUHIRO, MIZUKAMI SHIGEO
• Format: Patent
• Language: English; Japanese
• Published: 29.11.2018
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP

PROBLEM TO BE SOLVED: To provide a propylene-ethylene-1-butene terpolymer having a low hexane-soluble content and chlorine content, excellent copolymerization properties and a low melting point, in which a catalyst for propylene polymerization has a high catalyst activity, and to provide a method for producing the same.SOLUTION: There is provided a method for producing a propylene-ethylene-1-butene terpolymer, which comprises a step of copolymerizing propylene, ethylene and 1-butene in a vapor phase in the presence of a catalyst for propylene polymerization containing the following components (A) and (B) or components (A), (B) and (C), where the chlorine content in the propylene-ethylene-1-butene terpolymer is 3 to 16 mass ppm. Component (A) is a solid catalyst component containing titanium, magnesium and chlorine as essential components and having a titanium content of 0.5 mass% or more and 2.4 mass% or less. Component (B) is an organic aluminum compound, and component (C) is an organosilicon compound.SELECTED DRAWING: None 【課題】プロピレン重合用触媒が高触媒活性を有し、ヘキサン可溶分量、塩素含量が少なく、共重合特性に優れ融点が低いプロピレン・エチレン・１−ブテンターポリマー及びその製造方法の提供。【解決手段】プロピレン・エチレン・１−ブテンターポリマーを製造する方法であって、下記の成分（Ａ）及び成分（Ｂ）、又は、成分（Ａ）、成分（Ｂ）及び成分（Ｃ）を含むプロピレン重合用触媒の存在下で、気相状のプロピレン、エチレン及び１−ブテンを共重合させる工程を有し、前記プロピレン・エチレン・１−ブテンターポリマー中の塩素含量が３〜１６質量ｐｐｍであることを特徴とする。成分（Ａ）：チタン、マグネシウム及び塩素を必須成分とし、チタン含量が０．５質量％以上２．４質量％以下である固体触媒成分、成分（Ｂ）：有機アルミニウム化合物、成分（Ｃ）：有機ケイ素化合物。【選択図】なし