Tosoh Corporation

Nitto-Denko Corporation

Masao Tanabiki

Toru Doi

Tomoya Shimono

Shohei Yumino

Kota Sakaguchi

Tomonari Nagai

Kazunari Iwanaga

Morihiko Sato

Satoshi Hamura

Satoru Yamada

Hideo Nagashima

Makoto Watanabe

Takashi Okada

Shigehiko Abe

Kei Inatomi

Yasutake Wakabayashi

Ryuji Ikeda

A fluororesin including a residue unit of formula (1) and having a haze value equal to 2% or less of a heat-press molded product (thickness 1 mm) with a small haze value of a melt-molded product and a method for producing the same. Rf, Rf, Rfand Rfeach independently represent one of the groups consisting of a fluorine atom, a linear perfluoroalkyl group having 1 to 7 carbon atoms, a branched perfluoroalkyl group having 3 to 7 carbon atoms, and a cyclic perfluoroalkyl group having 3 to 7 carbon atoms, the perfluoroalkyl group may have an ethereal oxygen atom, Rf, Rf, Rfand Rfmay be linked to each other to form a ring having 4 or more and 8 or less carbon atoms, and the ring may include an ethereal oxygen atom.

Method for producing fluororesin particles

Resin particles including a unit of formula (1) and having a volume average particle diameter 5 to 2000 μm, a method for producing, and a fluororesin comprising a unit of formula (1) and having a weight average molecular weight 5×10to 3×10, and a yellow index of a heat-melted molded product (thickness 3 mm) after 24 h at 280° C. of 6 or less,

Fluororesin, fluororesin particles, and methods for producing these

The present invention relates to resin particles including a residue unit represented by the following general formula (1) and having a volume average particle diameter equal to or more than 5 &#x3bc;m and equal to or less than 2000 &#x3bc;m, and a method for producing thereof. Furthermore the present invention relates to a fluororesin comprising a residue unit represented by a general formula (1) and having a weight average molecular weight Mw in a range of 5&#xd7;10to 3&#xd7;10, and a yellow index of a heat-melted molded product (thickness 3 mm) after 24 h at 280&#xb0; C. of equal to or less than 6, and a method for producing thereof. In the formula (1), Rf, Rf, Rf, and Rfare each independently one of the groups consisting of a fluorine atom, a linear perfluoroalkyl group having 1 to 7 carbon atoms, a branched perfluoroalkyl group having 3 to 7 carbon atoms, or a cyclic perfluoroalkyl group having 3 to 7 carbon atoms. The perfluoroalkyl group may have an ethereal oxygen atom. Further, Rf, Rf, Rf, and Rfmay be linked to one another to form a ring having 4 or more and 8 or less carbon atoms, and the ring may include an ethereal oxygen atom.

An object of the present invention relates to provide an ethylene polymer having excellent mechanical strength and excellent molding processability in a wide molding processing temperature range. The invention relates to use an ethylene polymer comprising a repeating unit derived from ethylene, or a repeating unit derived from ethylene and a repeating unit derived from a C&#x3b1;-olefin, the ethylene polymer being satisfied with the following (A) to (F). (A) Density (d (kg/m)) is from 910 to 970, (B) MFR (g/10 min)) is from 0.01 to 50, (C) terminal vinyl number is 0.2 or less per 1,000 carbon atoms, (D) melt strength (MS(mN)) measured at 160&#xb0; C. and MFR are satisfied with MS&#x3e;90&#x2212;130&#xd7;log(MFR), (E) melt strength (MS(mN)) measured at 190&#xb0; C. and MSare satisfied with MS/MS&#x3c;1.8, and (F) fluidized activation energy (E(kJ/mol)) and d are satisfied with 127&#x2212;0.107d&#x3c;E&#x3c;88&#x2212;0.060d.

Ethylene polymer, catalyst for ethylene polymer production, and method for producing ethylene polymer

Catalyst for polymerization of an olefin is provided, which comprises (A) a transition metal compound having a carbon-metal bond structure and (B) an activating co-catalyst, or (A) a transition metal compound having a carbon-metal bond structure, (B) an activating cocatalyst and (C) an organometallic compound.

Transition metal compound, catalyst for polymerization of olefin, and process for polymerization of ofelin using the catalyst

A transition metal compound having a ligand with an azaferrocene structure or a ferrocene structure. The transition metal compound is used in combination with an activating cocatalyst, as a catalyst for polymerization of olefins.

Transition metal compound, coordinative compound, catalyst for polymerization of olefin, and process for polymerization of olefin using the catalyst

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Yokkaichi, Japan

Masao Tanabiki