Ichihara, Japan
Ichihara, Japan

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Patent
Kirin Company and Prime Polymer Co. | Date: 2015-03-09

An object of the present invention is to provide a coated polypropylene-based molded article having an excellent gas barrier property. A coated polypropylene-based molded article according to the present invention includes a molded article formed of a polypropylene-based resin composition and a thin film formed on a surface of the molded article, the polypropylene-based resin composition includes a polypropylene-based resin (D) and a nucleating agent (C), the content of the nucleating agent (C) is from 0.05 to 0.5 parts by mass with respect to 100 parts by mass of the polypropylene-based resin (D).


Patent
Kirin Company Ltd and Prime Polymer Co. | Date: 2017-01-18

An object of the present invention is to provide a coated polypropylene-based molded article having an excellent gas barrier property. A coated polypropylene-based molded article according to the present invention includes a molded article formed of a polypropylene-based resin composition and a thin film formed on a surface of the molded article, the polypropylene-based resin composition includes a polypropylene-based resin (D) and a nucleating agent (C), the content of the nucleating agent (C) is from 0.05 to 0.5 parts by mass with respect to 100 parts by mass of the polypropylene-based resin (D).


Patent
Prime Polymer Co. | Date: 2017-01-18

There is provided a propylene resin composition which has a wide stretch blow molding temperature range and is capable of providing a stretched container having small container shrinkage after heat treatment and having excellent transparency of the container side surface even after heat treatment. The propylene resin composition is a composition including 100 parts by weight of (A) a propylene resin and 0.05 to 0.5 part by weight of (B) a nucleating agent containing an organophosphoric ester compound represented by the formula (B1) and at least one kind selected from aliphatic carboxylic acids and derivatives thereof and containing an alkali metal element as an essential component, wherein MFR is 11 to 100 g/10 min, the crystalline melting point is 140 to 155C, and in an elution curve determined by a temperature rising elution fractionation chromatograph (TREF), the elution quantity Wp1 (% by weight) in a temperature range higher than the main elution peak temperature Tp and the elution quantity Wp2 (% by weight) in a temperature range not higher than 10C are each in a specific range.


Patent
Mitsui Chemicals Inc. and Prime Polymer Co. | Date: 2017-06-07

Provided are a propylene homopolymer composition for a capacitor film, from which a thin film can be easily produced and which can provide a film with excellent high-temperature voltage resistance, a method for producing the same, and a capacitor film. The propylene homopolymer composition for a capacitor film contains 1 % by mass or more and less than 50 % by mass of a propylene homopolymer (Al) having predetermined characteristics and more than 50 % by mass and 99 % by mass or less of a propylene homopolymer (B1) having predetermined characteristics, and has (i) a melt flow rate (MFR) of 1.0 to 10.0 g/10 min and (ii) a chlorine content of 2 ppm by mass or less.


Patent
Mitsui Chemicals Inc. and Prime Polymer Co. | Date: 2017-06-07

Provided are a propylene homopolymer composition for a capacitor film, which can provide a film with excellent high-temperature voltage resistance and excellent thin-film stretchability, a method for producing the same, and a capacitor film. The propylene homopolymer composition for a capacitor film contains 50 to 99 % by mass of a propylene homopolymer (A1) having predetermined characteristics and 1 to 50 % by mass of a propylene homopolymer (B1) having predetermined characteristics, and has (i) a melt flow rate (MFR) of 1.0 to 10.0 g/10 min and (ii) a chlorine content of 2 ppm by mass or less.


Patent
Prime Polymer Co. | Date: 2015-12-30

Provided is a biaxially-stretched film wherein the biaxial stretching is possible in a broader temperature range and which is excellent in thickness accuracy, and an ethylene polymer composition serving as a raw material of the film. The biaxially-stretched film of the present invention is obtained from an ethylene polymer composition (E) including a specific ethylene polymer component (A) containing 20 to 100 wt% of an ethylene polymer (a) being a copolymer of ethylene and a C4-10 -olefin and having specific melt flow rate and density, and an ethylene polymer component (B) being another copolymer of ethylene and a C4-10 -olefin, wherein a weight fraction [W_(A)] of the ethylene polymer component (A) is 0.50 or more and 0.92 or less, and a weight fraction [W_(B)] of the ethylene polymer component (B) is 0.08 or more and 0.50 or less provided that W_(A) and W_(B) total 1.0.


Patent
Prime Polymer Co. | Date: 2016-05-18

[Problem] An object is to provide a propylene resin composition that can give shaped articles excellent in mechanical properties and scratch resistance, and to provide a shaped article with excellent mechanical properties and scratch resistance that includes the propylene resin composition. [Solution] The propylene resin composition of the invention includes a resin composition (G) including a propylene polymer (A) having a melt flow rate of 20 to 300 g/10 min, an ethylene--olefindiene copolymer (B-1) having a melt flow rate of less than 0.4 g/10 min, an ethylene -olefin copolymer (B-2) having a melt flow rate of 0.5 g/10 min to less than 10 g/10 min, and an inorganic filler (C) ; a modified polypropylene (D) ; a surface modifier (E); and a pigment (F).


Patent
Prime Polymer Co. | Date: 2015-09-02

[Problem] To provide polypropylene for a microporous film having excellent heat resistance and strength. [Solution] Polypropylene for a microporous film satisfying the following requirements (1) and (2): (1) the weight-average molecular weight (Mw) value, as determined by gel permeation chromatography (GPC), is not less than 100,000 but less than 800,000, the value (Mw/Mn) obtained by dividing the weight-average molecular weight by the number-average molecular weight is more than 7.0 but not more than 12.0, and the value (Mz/Mw) obtained by dividing the Z-average molecular weight by the weight-average molecular weight is not less than 3.8 but not more than 9.0, and (2) the mesopentad fraction, as measured by ^(13)C-NMR (nuclear magnetic resonance method), is not less than 95.5%.


Patent
Prime Polymer Co. | Date: 2016-05-18

An object of the invention is to provide a propylene resin composition that can give shaped articles resistant to flaws such as scratches and glazed marks and having excellent mechanical characteristics. The invention achieves the object with a propylene resin composition obtained by blending 35 to 85 parts by weight of a propylene-ethylene random copolymer (A) having a melt flow rate (ASTM D1238, 230C, 2.16 kg load) of 5 to 100 g/10 min and an ethylene content of 2 to 9 mol%; 5 to 25 parts by weight of an ethylene--olefin copolymer (B) obtained by copolymerizing ethylene with one or more olefins selected from -olefins having 3 to 10 carbon atoms, and having a melt flow rate (ASTM D1238, 230C, 2.16 kg load) of 0.1 to 80 g/10 min; 10 to 40 parts by weight of a fibrous filler (C) having an average fiber length of 0.1 to 2 mm and an average fiber diameter of 1 to 25 m; 0.01 to 1.0 part by weight of a lubricant (D); and 0.1 to 3 parts by weight of a modified polypropylene (E) (the total of (A) to (C) is taken as 100 parts by weight).


Patent
Prime Polymer Co. | Date: 2016-04-27

A long-fiber-reinforced resin composition including the following component (A) and the component (B), the content of the component (A) being 50 to 90 wt % and the content of the component (B) being 10 to 50 wt %; and the content of reinforcing fiber contained in the component (A) being 20 to 60 wt % relative to the total amount of the fiber-reinforced resin composition:

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