Mitsui Chemicals, Inc.

Kiminori Noda

Masayoshi Yamaguchi

Hiroshi Hoya

Hiroshi Uehara

Eiji Shiba

Akira Yamashita

Norihide Inoue

Manabu Kawamoto

Takayuki Kajihara

Makoto Egawa

Tatsuya Oku

Satoshi Ikeda

Shigenobu Ikenaga

Takashi Hakuta

Takayuki Kuroki

Tomohiro Abe

Tatsuya Sakai

Hidetake Nakano

Koya Yoshimoto

Kan Komiya

Nozomi Kamiya

Kazuaki Yasuda

Hiroto Yasui

Norihide c/o Mitsui Chemicals Fabro Inc Inoue

An object of the present invention is to provide a composition capable of allowing for production of a crosslinked foamed product suitable for applications of footwear parts such as soles and excellent in properties such as lightweight properties, heat shrinkability, compression set and mechanical strength in a well-balanced manner, a foamed product using the composition and a footwear part using the same. An ethylene copolymer composition including an ethylene copolymer (A) satisfying all the following requirements (A-a), (A-b), (A-c) and (A-d), ethylene/α-olefin having 3 to 20 carbon atoms/non-conjugated polyene copolymer rubber (B), and, if necessary, an ethylene/polar monomer copolymer (C); (A-a) a vinyl group content per 1,000 carbon atoms is 0.025 to 0.3, (A-b) MFR/MFRis 7 to 20, (A-c) a density is 0.850 to 0.910 g/cm, and (A-d) a melt flow rate is 0.01 to 200 g/10 min.

Ethylene copolymer composition and use thereof

A laminated sheet of a two-layer sheet in which an L1 layer including 50 to 99 parts by mass of an ethylene-based polymer (E1) having a density of 0.890 to 970 kg/mand 1 to 50 parts by mass of a propylene-based polymer (P1) is in contact with an L2 layer including 50 to 100 parts by mass of a propylene-based polymer (P2) and 0 to 50 parts by mass of an ethylene-based elastomer (E2) having a density of equal to or more than 850 kg/mand less than 890 kg/m, in which the propylene-based polymer (P1) includes a propylene-based elastomer (P1a) including a propylene-derived constitutional unit and an ethylene-derived constitutional unit and/or a constitutional unit derived from an &#x3b1;-olefin having 4 to 20 carbon atoms, and having a melting point (Tm) that is lower than 120&#xb0; C. or not observable; and a solar cell backsheet formed using the same.

Laminated sheet and solar cell backsheet using same

A laminate film () of the present invention includes a heat sealing layer () composed of a resin composition including, with respect to 20 to 95 parts by weight of a propylene-based polymer (A) having a melting point (Tm) of equal to or higher than 120&#xb0; C. and equal to or lower than 170&#xb0; C. as measured by differential scanning calorimetry (DSC), a total of 5 to 80 parts by weight of two or more kinds of copolymers selected from the group consisting of a propylene.1-butene copolymer (B) containing a unit derived from propylene in an amount of 51 to 95 mol % and a unit derived from 1-butene in an amount of 5 to 49 mol %, wherein the total of the unit derived from propylene and the unit derived from 1-butene is 100 mol %, a copolymer (C) of ethylene and an &#x3b1;-olefin having 3 to 20 carbon atoms, and a copolymer (D) of 1-butene and an &#x3b1;-olefin having 3 carbon atoms or 5 to 20 carbon atoms containing a constitutional unit derived from 1-butene in an amount of 50 to 99 mol % and a constitutional unit derived from an &#x3b1;-olefin having 3 carbon atoms or 5 to 20 carbon atoms in an amount of 1 to 50 mol %, wherein the total of the unit derived from 1-butene and the unit derived from the &#x3b1;-olefin is 100 mol %, wherein each of Component (B), Component (C), and Component (D) does not correspond to Component (A), and the total amount of Component (A), Component (B), Component (C), and Component (D) is 100 parts by weight, and a base layer (), in which a surface of the heat sealing layer () opposite to the base layer () has a wet tension of 32 to 45 mN/m.

Laminate film and packaging bag using same

Disclosed is a stretched laminated filmhaving a heat-sealable layercomposed of a resin composition which contains 50 to 97 parts by mass of a propylene-based polymer (A) having a melting point (Tm) of not lower than 120&#xb0; C. but not higher than 170&#xb0; C. and comprising more than 50% by mol of a structural unit derived from propylene, 3 to 50 parts by mass of a 1-butene-based polymer (B) having a melting point (Tm) of lower than 120&#xb0; C. and comprising 10 to 90% by mol of a structural unit derived from 1-butene and 10 to 90% by mol of a structural unit derived from an &#x3b1;-olefin having 3 or 5 to 20 carbon atoms, and optionally 3 to 30 parts by mass of an ethylene &#x3b1;-olefin copolymer (C) comprising 50 to 99% by mol of a structural unit derived from ethylene and 1 to 50% by mol of a structural unit derived from an &#x3b1;-olefin having 3 to 20 carbon atoms, wherein the sum of the component (A) and the component (B) is 100 parts by mass; and a base layer

Stretched laminated film

The present method for producing a crosslinked product include the steps of: melt molding an ethylene copolymer (A) or a resin composition containing the ethylene copolymer (A); and carrying out crosslinking; wherein the ethylene copolymer (A) contains a constitutional unit derived from ethylene and a constitutional unit derived from an &#x3b1;-olefin having 3 to 20 carbon atoms, and satisfies the following requirements (1), (2) and (3): (1) a vinyl group content per 1,000 carbon atoms as measured byH-NMR is from 0.06 to 1; (2) a ratio MFR/MFRis from 8.5 to 50; and (3) a density d is from 850 kg/mto 920 kg/m. The present method for producing a crosslinked product is capable of providing a crosslinked product having a good moldability and an excellent mechanical strength. Further, the present method is capable of providing a foamed product which is light weight and excellent in mechanical strength, with an excellent productivity; as well as providing crosslinked molded articles whose dimensional variations between individual products are small.

Crosslinked product, method for producing the same and the use thereof, and ethylene copolymer

Means for solving the problems The thermoplastic resin composition (X1) of the present invention comprises (A1), (B1), (C1), and optionally (D1) below:

Propylene based resin composition and use thereof

Means for Solving the Problems The thermoplastic resin composition (X1) of the present invention comprises (A1), (B1), (C1), and optionally (D1) below:

[Objects] It is an object to provide a foam having a low specific gravity and a small compression set, more preferably a foam having a low specific gravity, a small compression set and uniform quality, a foaming composition, and applications of the foam. [Means for Solution] The foam is obtained by foaming an olefin polymer, wherein the foam has a specific gravity (d) in the range of 0.03 to 0.30, and a compression set (CS, %) and the specific gravity (d) satisfy the formula of CS&#x2266;&#x2212;279&#xd7;(d)+95. The foam is preferably obtained from a foaming composition that includes an ethylene polymer (A) including a specific ethylene/&#x3b1;-olefin copolymer (A1) and an ethylene/polar monomer copolymer (A2) in a specific mass ratio, and a specific ethylene/C3-20 &#x3b1;-olefin/non-conjugated polyene copolymer (B).

Foams, foaming compositions and applications thereof

The present invention provides a resin composition capable of providing foams (non-crosslinked and crosslinked foams) which have low specific gravity and low compression set (CS) and are excellent in tensile strength properties, tear strength properties and vibration-damping properties at room temperature to high temperatures, and a foam of the resin composition. The resin composition for foams of the present invention comprises 5 to 95 parts by weight of an ethylene/&#x3b1;-olefin copolymer (A) and 5 to 95 parts by weight of a hydrogenated copolymer (B) obtained by hydrogenating a copolymer comprising a conjugated diene and a vinyl aromatic compound, and is characterized in that the hydrogenated copolymer (B) does not have a glass transition point of not higher than &#x2212;10&#xb0; C. when measured at a frequency of 1 Hz in accordance with JIS-K7198.

Resin composition for foams and uses thereof

The thermoplastic resin composition (X1) of the present invention comprises (A1), (B1), (C1), and optionally (D1) below:

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Mobara, Japan

Kiminori Noda