Sumitomo Chemical Company, Limited

Tokyo Institute of Technology

Hirofumi Johoji

Hidetake Hozumi

Tadaaki Nishiyama

Toshio Sasaki

Hiroyuki Shiraishi

Keisaku Yamamoto

Kohtaro Osakada

Daisuke Takeuchi

Atsuko Ogawa

Osamu Ihata

Kohzoh Miyazaki

Yuji Shigematsu

Toshiyuki Kuwabara

Kiyoshi Kawai

Yoshihiro Miyoshi

Kenji Sogo

Yufu Sato

Toshimi Sato

Tsuyoshi Takei

Akio Uemura

A polymer and a method for producing same are provided, which includes a repeating unit represented by the following formula (1): wherein: each of A, A, A, and Aindependently represents a hydrogen atom, a halogen atom, an alkyl group, an aralkyl group, an aryl group, a silyl group, a siloxy group, an alkoxy group, an aralkyloxy group, an aryloxy group, an amino group, an amide group, an imide group, or a hydrocarbon thio group; each of A, A, A, and Ais independently any of these groups at different carbons to which the each of A, A, A, and Ais bonded, and A, A, A, and Amay be bonded to each other; and each of m, n, and k is independently an integer in a range of 2 to 20.

Polymer and method for producing same

A copolymer and method for providing it are provided, which includes a monomer unit represented by the following formula (1) and an olefin unit: wherein: each of A, A, A, and Aindependently represents a hydrogen atom, a halogen atom, an alkyl group, an aralkyl group, an aryl group, a silyl group, a siloxy group, an alkoxy group, an aralkyloxy group, an aryloxy group, an amino group, an amide group, an imide group, or a hydrocarbon thio group; which group may have a substituent; and each of m, n, and k is independently an integer in a range of 2 to 20.

Copolymer and method for producing same

The present invention relates to an olefin derived copolymer and a thermoplastic resin composition using the olefin derived copolymer satisfying the following (1) and (2): (1) tensile strength at break measured based on JIS K6251 is 2.0 or less MPa; and (2) tensile elongation at break EB (%) of a resin composition obtained satisfies the following relational expression (expression 1) and (expression 2), when blended with a polypropylene derived resin that has 20 degree C. xylene soluble component of not more than 20 wt %.[3/5]&#x2212;[2/6]&#x2267;0.15&#x2003;&#x2003;(expression 1)[2/6]&#x2267;&#x2212;800&#x2003;&#x2003;(expression 2) (R[3/5] and R[2/6] are obtained by the following methods: a curve is obtained by plotting tensile elongation at break EB (%) (based on JIS K6251) of resin composition taken as vertical axis, and weight part rate Pa of a content of an olefin derived copolymer contained in a resin composition taken as horizontal axis; a multiple regression curve in section regions of Pa=0.30-0.50 and Pa=0.20-0.60 (Pa represents content weight percentage of an olefin derived copolymer contained in a resin composition) of a multiple regression expression obtained by quintic multiple regression of the curve is obtained; R[3/5] and R[2/6] are defined as multiple correlation coefficients of a primary straight line obtained by approximating of the multiple regression curve by method of least squares. S[2/6] represent a gradient of a primary straight line (expression) obtained by approximating the above-mentioned multiple regression curve by a method of least squares in section region of Pa=0.20-0.60. In addition, in the above-mentioned multiple regression expression, it is indispensable that data at least seven points Pa=0.00, 0.20, 0.30, 0.40, 0.50, 0.60 and 0.70 are contained. Furthermore, when data at points of number beyond above case are contained, it is indispensable that total Pa values exist at 0.10 or less of fixed interval mutually.

Olefin derived copolymer

An olefin based copolymer composition having excellent weather resistance and excellent recycling properties having an olefin based copolymer obtained by copolymerizing two or more olefins, wherein the olefins are selected from the group consisting of ethylene, propylene and alpha olefins having 4 to 20 carbon atoms, and the total number of carbon atoms of the two or more selected olefins is 6 or more in combination with other component(s).

Olefin-based copolymer composition

Olefin polymer and thermoplastic resin composition

Thermoplastic resin composition

A propylene copolymer comprising propylene, at least one olefin selected from the group consisting of olefins having 2 to 20 carbon atoms except propylene, and a cyclic olefin, wherein the total number of carbon atoms of the monomers except the cyclic olefin is at least 7. This copolymer is mixed with a thermoplastic resin such as polypropylene to provide a thermoplastic resin composition having excellent flexibility, transparency, resistance to whitening on bending, scratch resistance and heat resistance.

Propylenic copolymer and thermoplastic resin composition

Resin composition pellet

Ethylene-&agr;-olefin-nonconjugated polyene random copolymer

A propylene copolymer obtainable by polymerizing a propylene, at least one of .alpha.-olefin having 4-20 carbon atoms, and ethylene, in the presence of a catalyst for olefin polymerizaton including the following (A), (B) and/or (C):

Propylene copolymer

A random copolymer comprising ethylene, an .alpha.-olefin and a branched conjugated polyvalent olefin, wherein (i) ethylene, the .alpha.-olefin and an iodine value respectively satisfy the following inequalities: 0&lt;ethylene&lt;100 (% by mol), 0&lt;.alpha.-olefin&lt;100 (% by mol) and 0&lt;iodine value&lt;370 (g/100 g), (ii) an intrinsic viscosity [.eta.] measured in decalin at 135.degree. C. of the random copolymer satisfies the following inequality: 0.1 (dl/g)&lt;[.eta.]&lt;10 (dl/g) and (iii) a molecular weight distribution (Mw/Mn).ltoreq.5.

Copolymer and copolymer composition

An ethylene-.alpha.-olefin copolymer having;

Ethylene-.alpha.-olefin copolymer and a molded article therefor

A process for polymerizing ethylene at a high temperature under high pressure, which comprises contacting ethylene alone or along with an .alpha.-olefin at a temperature of 120.degree. C. or more at a pressure of 350 kg/cm.sup.2 or more with a catalyst consisting essentially of (A) a reaction product of (A1) a titanium compound having at least one titanium-nitrogen bond with (A2) an organometallic compound of an element of Groups I to III of the Periodic Table and (B) an organoaluminum compound. Said process enables the production of an ethylene polymer or copolymer having a narrow composition distribution and a high molecular weight and being excellent in weather resistance, color development, transparency, corrosiveness and mechanical properties.

Process for polymerizing ethylene at high temperature under high pressure

A liquid catalyst component which can be used as a component of a catalyst system in combination with an organoaluminum compound (B) for producing ethylene-.alpha.-olefin copolymers.

Liquid catalyst component, catalyst system containing the same, and

A process for producing an ethylene-.alpha.-olefin copolymer which comprises copolymerizing ethylene and an .alpha.-olefin at a temperature higher than 120.degree. C. by using a catalyst system comprising a specified titanium amide compound represented by general formula (R.sup.1 R.sup.2 N).sub.4-n TiY.sub.n and an oxygen-containing alkylaluminum compound. According to the above process, there can be obtained ethylene-.alpha.-olefin copolymers narrow in composition distribution, high in molecular weight and excellent in weather resistance, colorizability, corrosion resistance and dynamic properties.

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Ichihara, Japan

Hirofumi Johoji