摘要:
An olefin polymerizing catalyst consisting of (A) a solid catalyst component containing magnesium, titanium, halogen and electron donative compound as essential components, (B) an organoaluminum compound and (C) at least two electron donative compounds including electron donative compounds (α) and (β), provided that the pentad stereoirregularity index (mmrr/mmmm) of 105°C xylene-insoluble fraction of a homopolypropyelene obtained by carrying out polymerization by the use of electron donative compound (α) together with the above-mentioned solid catalyst component (A) and organoaluminum compound (B) satisfies the following condition: 0 ≦ mmrr/mmmm ≦ 0.0068 and the pentad stereoirregularity index (mmrr/mmmm) of 105°C xylene-insoluble fraction of a homopolypropylene obtained by carrying out polymerization by the use of electron donative compound (α) together with the above-mentioned solid catalyst component (A) and organoaluminum compound (B) satisfies the following condition: 0.0068 a process for producing an olefin polymer using the catalyst; a polypropylene for use in production of a biaxially oriented film, the polypropylene being obtained by carrying out polymerization by the use of the polymerizing catalyst wherein:
(1) 23°C decalin-soluble fraction content of the polypropylene is in the range of from 3.0 to 10.0% by weight, (2) the temperature at which the polypropylene shows a complex elastic modulus of 1.0 × 10⁹ dynes/cm² when a vibration of 110 Hz is applied to the polypropylene is in the range of from 134 to 152°C, and (3) melt flow rate (MFR) of the polypropylene at 230°C is in the range of from 0.5 to 10.0 g/10 minutes; and a biaxially oriented film obtained by subjecting the polypropylene to a stretching processing.
摘要:
An α-olefin polymer well balanced between stiffness, stickiness, processability, etc., which intrinsic viscosity [η] is in the range of from 0.5 to 10 and which 20°C xylene-soluble fraction (CXS) content (% by weight) and 105°C xylene-insoluble fraction (XIS) content (% by weight) satisfy a condition of XIS ≦ 70.00 - 3.64CXS, provided that CXS is not smaller than 0 and not greater than 15; a specified α-olefin polymerizing catalyst for producing the polymer; a process for producing the polymer using the specified α-olefin polymerizing catalyst; a polypropylene for use in the production of a biaxially oriented film excellent in stretchability and satisfying the conditions (1)-(3) mentioned below; and a biaxially oriented film excellent in stiffness and dimensional stability obtained by stretching the polypropylene:
(1) the content of 20°C xylene-soluble fraction (CXS) is 3.5% by weight or less, (2) the content of 20°C xylene-soluble fraction (CXS, % by weight) and the content of 105°C xylene-insoluble fraction (XIS, % by weight) satisfy the following condition: XIS ≦ 70.00 - 3.64CXS, and (3) melt flow rate (MFR) at 230°C is from 0.5 to 10.0 g/10 minutes.
摘要:
A polypropylene laminated film containing a crystalline polypropylene layer and, laminated on at least one side of the layer of the crystalline polypropylene, a layer of a copolymer of propylene and at least one α-olefin of from 4 to 10 carbon atoms having a specific composition, melt flow rate and molecular weight distribution in which the α-olefin content in the cold xylene soluble portion of the random copolymer is less than 1.7 times the α-olefin content in the copolymer and the random copolymer satisfies the mathematical expression, B ≦ 1.05A - 10, wherein A is a weight percentage of the content of said at least one α-olefin having from 4 to 10 carbon atoms in the random copolymer and B is a weight percentage of the cold xylene soluble portion in the random copolymer, is superior in low temperature heat sealability and hot tack property and moreover has a good transparency, blocking resistance and printability, wherein the random copolymer is obtained by gas phase polymerization substantially in the absence of a liquid medium, and using a catalyst system comprising (i) a solid catalyst component containing magnesium, titanium and a halogen as essential constituents, (ii) an organoaluminum compound and (iii) an electron donative compound.
摘要:
There is described an α-olefin polymerizing catalyst consisting of
(A) a solid catalyst component containing magnesium, titanium, halogen and an electron donative compound as essential components, (B) an organoaluminum compound, and (C) an electron donative compound component, for use in the production of an α-olefin polymer which is an α-olefin polymer obtained by polymerizing an α-olefin having 3 or more carbon atoms and satisfying the following conditions:
the intrinsic viscosity [η] of said polymer is not lower than 0.5 and not higher than 10, and 20°C xylene-soluble fraction (CXS) content (% by weight) and 105°C xylene-insoluble fraction (XIS) content (% by weight) of said polymer satisfy the following condition: XIS ≤ 70.00 - 3.64CXS provided that CXS is not smaller than 0 and not greater than 15.
摘要:
An olefin polymerizing catalyst consisting of (A) a solid catalyst component containing magnesium, titanium, halogen and electron donative compound as essential components, (B) an organoaluminum compound and (C) at least two electron donative compounds including electron donative compounds (α) and (β), provided that the pentad stereoirregularity index (mmrr/mmmm) of 105°C xylene-insoluble fraction of a homopolypropyelene obtained by carrying out polymerization by the use of electron donative compound (α) together with the above-mentioned solid catalyst component (A) and organoaluminum compound (B) satisfies the following condition: 0 ≦ mmrr/mmmm ≦ 0.0068 and the pentad stereoirregularity index (mmrr/mmmm) of 105°C xylene-insoluble fraction of a homopolypropylene obtained by carrying out polymerization by the use of electron donative compound (α) together with the above-mentioned solid catalyst component (A) and organoaluminum compound (B) satisfies the following condition: 0.0068 a process for producing an olefin polymer using the catalyst; a polypropylene for use in production of a biaxially oriented film, the polypropylene being obtained by carrying out polymerization by the use of the polymerizing catalyst wherein: (1) 23°C decalin-soluble fraction content of the polypropylene is in the range of from 3.0 to 10.0% by weight, (2) the temperature at which the polypropylene shows a complex elastic modulus of 1.0 × 10⁹ dynes/cm² when a vibration of 110 Hz is applied to the polypropylene is in the range of from 134 to 152°C, and (3) melt flow rate (MFR) of the polypropylene at 230°C is in the range of from 0.5 to 10.0 g/10 minutes; and a biaxially oriented film obtained by subjecting the polypropylene to a stretching processing.
摘要:
Disclosed are a polypropylene for use in production of a biaxially oriented film, said polypropylene being obtained by carrying out polymerization by the use of an olefin-polymerizing catalyst consisting of: (A) a solid catalyst component containing magnesium, titanium, halogen and electron donative compound as essential components, (B) an organoaluminum compound, and (C) at least two electron donative compounds including electron donative compound (α) and electron donative compound (β), provided that the pentad stereoirregularity index (mmrr/mmmm) of 105°C xylene-insoluble fraction of a homopolypropyelene obtained by carrying out polymerization by the use of electron donative compound (α) together with the above-mentioned solid catalyst component (A) and organoaluminum compound (B) satisfies the following condition:0 ≤ mmrr/mmmm ≤ 0.0068 and the pentad stereoirregularity index (mmrr/mmmm) of 105°C xylene-insoluble fraction of a homopolypropylene obtained by carrying out polymerization by the use of electron donative compound (β) together with the above-mentioned solid catalyst component (A) and organoaluminum compound (B) satisfies the following condition:0.0068