Mitsui Chemicals, Inc.

Keisuke Shishido

Kotaro Ichino

Yoshiharu Kikuchi

Mitsunao Arino

Koji Endo

Fumito Takeuchi

Sadahiko Matsuura

Mikio Hosoya

Yuji Ishii

Kiyohide Inomata

Tatsuya Sakai

Yuichi Yamamura

Mayumi Hiwara

Yuji Noguchi

Kenta Ide

Yusuke Mizobuchi

Yasushi Tohi

Tomoaki Matsugi

Yasushi Yanagimoto

Junpei Tanaka

An object of the present invention is to provide a novel ethylene/α-olefin/non-conjugated polyene copolymer containing a certain non-conjugated polyene such as VNB as a copolymerization component, having a low long-chain branching content, excellent in cure characteristics in the case of crosslinking by using peroxide, and having good processability. The ethylene/α-olefin/non-conjugated polyene copolymer according to the present invention has constitutional units derived from ethylene (A), an α-olefin (B) having 3 to 20 carbon atoms, and a non-conjugated polyene (C) having a total of two or more partial structures selected from the group consisting of the following general formulas (I) and (II) in a molecule, and satisfies certain requirements.

Ethylene/alpha-olefin/non-conjugated polyene copolymer, method for producing the same, and use thereof

The purpose of the present invention is to obtain an ethylene&#x22c5;&#x3b1;-olefin&#x22c5;non-conjugated polyene copolymer that has a low permanent compression set at low temperatures, is flexible, and has an excellent balance of rubber elasticity at low temperatures and tensile strength at normal temperatures. This ethylene-based polymer is an ethylene&#x22c5;&#x3b1;-olefin&#x22c5;non-conjugated polyene copolymer that includes units derived from ethylene (A), units derived from an &#x3b1;-olefin (B) containing 4-20 carbon atoms, and units derived from a non-conjugated polyene (C) and satisfies (1)-(4). (1) The molar ratio of (A) to (B) is 40/60-90/10, (2) the contained amount of the units derived from (C) is 0.1-6.0 mol %, (3) ML125&#xb0; C. is 5-100, and (4) the B value is 1.20 or more.

Ethylene &#x3b1;-olefin non-conjugated polyene copolymer, use thereof, and manufacturing method thereof

Ethylene alpha-olefin non-conjugated polyene copolymer, use thereof, and manufacturing method thereof

[Means for solving problem] The resin composition of the present invention comprises 100 parts by mass of a specific ethylene/&#x3b1;-olefin/non-conjugated polyene copolymer (A) and 0.1 to 5 parts by mass of a peroxide (B), and the copolymer (A) comprises structural units derived from ethylene (a1), an &#x3b1;-olefin (a2) having 3 to 20 carbon atoms, and a non-conjugated polyene (a3) including intramolecularly two or more partial structures in total selected from the group consisting of structures represented by the following formulae (I) and (II),  [Effect] The resin composition of the present invention is excellent in crosslinking properties and the resin composition and its crosslinked shaped article of the present invention can be used, without any limitation, in various applications known as applications of rubber composition, and can be suitably used, for example, for interior and exterior parts for automobiles and applications requiring heat resistance.

Resin composition and use thereof

The purpose of the present invention is to obtain an ethylene.&#x3b1;-olefin.non-conjugated polyene copolymer that has a low permanent compression set at low temperatures, is flexible, and has an excellent balance of rubber elasticity at low temperatures and tensile strength at normal temperatures. This ethylene-based polymer is an ethylene.&#x3b1;-olefin.non-conjugated polyene copolymer that includes units derived from ethylene (A), units derived from an &#x3b1;-olefin (B) containing 4-20 carbon atoms, and units derived from a non-conjugated polyene (C) and satisfies (1)-(4). (1) The molar ratio of (A) to (B) is 40/60-90/10, (2) the contained amount of the units derived from (C) is 0.1-6.0 mol %, (3) ML125&#xb0; C. is 5-100, and (4) the B value is 1.20 or more.

A novel ethylene/&#x3b1;-olefin/non-conjugated polyene copolymer comprising structural units derived from ethylene (A), an &#x3b1;-olefin (B) of 3 to 20 carbon atoms, and a non-conjugated polyene (C) containing intramolecularly two or more partial structures in total selected from the group consisting of structures of Formulae (I) and (II), and having a small number of long-chain branches,  The novel ethylene/&#x3b1;-olefin/non-conjugated polyene copolymer contains a non-conjugated polyene such as VNB as a copolymerization component and a small long-chain branch content and is excellent in curing properties in the case of crosslinking using peroxide; and a process for producing the ethylene/&#x3b1;-olefin/non-conjugated polyene copolymer, and a use thereof are provided.

Ethylene/&#x3b1;-olefin/non-conjugated polyene copolymer, and production process and use thereof

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Ichihara, Japan

Keisuke Shishido