Mitsui Chemicals, Inc.

Tamio Kawasumi

Michio Eriguchi

Masaki Misumi

Haruo Inoue

Tadashi Asanuma

Shigeo Nishikawa

Shigeru Kimura

Yuji Inatomi

Hiroshi Mori

Tomoyuki Okamura

Takashi Iiyama

Masataka Iwata

Hirofumi Zenkoh

Kazuaki Kouda

Takashi Kanbayashi

Hiroyuki Katayama

Masami Hashimoto

Shunji Ueda

A resin foam having fine foam cells is provided at low cost. A method of producing the foam includes preparing a molten resin composition and continuous extrusion foaming of the molten resin composition. The molten resin composition is prepared by melting a resin mixture of resins (A) and (B) by dissolving a foaming agent into the resin mixture. Resins (A) and (B) respectively have appropriately selected glass transition temperatures and resin (B) particles of appropriate diameter are dispersed in resin (A).

Foam and production method of the same

Provided are a shape-retaining film which has excellent adhesion to inks and other functional layers while retaining high shape-retaining properties and a process for producing the shape-retaining film. The shape-retaining film comprises an ethylene homopolymer or an ethylene/a-olefin copolymer having a C3-6 a-olefin content less than 2 wt. %, the ethylene homopolymer or copolymer having a density of 950 kg/m3 or higher and a weight-average molecular weight (Mw)/number-average molecular weight (Mn) ratio of 5-20. The film has a tensile elasticity modulus of 6-50 GPa and has either an angle of recovery from 90 bending of 8 or less or an angle of recovery from 180 bending of 65 or less.

Shape-retaining film, process for producing same, laminate for packaging, packaging material and process for producing same, shape-retaining fiber, and anisotropic heat-conductive film

Disclosed is a film having polarization selectivity and diffusibility, and a means for easily producing the film. The polarizing diffuser film is composed of substantially one kind of crystalline resin having an intrinsic birefringence of not less than 0.1, has a total light transmittance to visible light of 50-90%, a transmission haze to visible light of 15-90% and a transition polarization degree to visible light of 20-90%.

Polarizing diffuser film, method for producing polarizing diffuser film, and liquid crystal display device comprising polarizing diffuser film

A laminated product according to the present invention has a fiber reinforced resin layer, an elastic layer laminated on one surface of the fiber reinforced resin layer, and a surface protection layer laminated on a surface of the elastic layer for protecting the surface of the elastic layer. The fiber reinforced resin layer includes at least two prepreg sheets, each of which is formed by impregnating a thermoplastic resin into continuous reinforcing fibers arrayed in one direction such that the volume ratio of the continuous reinforcing fibers is in the range of 40 to 80%. The prepreg sheets are laminated so as to the array directions of the continuous reinforcing fibers at right angles.

Laminated product having surface protection layer

The invention provides a laminated product of urethane-based resin. That is, the invention arranges a continuous reinforcing fiber to one direction, impregnates the arranged fiber with thermoplastic resin to form a prepreg sheet having 50% in volume ratio of the fiber, laminates two or more resulting prepreg sheets so as to intersect fiber directions at right angles or further laminate of the prepreg sheet to form a fiber-reinforced resin layer, laminates a urethane-based resin layer on the resulting fiber-reinforced resin layer, and thus provides a urethane-based resin laminated product having excellent dimensional stability and application ability.

Laminated product

A multi-layer blow molded article of a polypropylene comprising at least two layers, wherein at least one layer of the inner layer or layers comprises a resin composition containing 100-50 parts by weight of a syndiotactic polypropylene with an Mw/Mn of 3.0 or more and 0-50 parts by weight of an ethylene-.alpha.-olefin copolymer elastomer, and the outermost layer comprises a syndiotactic polypropylene with an Mw/Mn of less than 3.0, an isotactic polypropylene with an Mw/Mn of 6.0 or less, a resin composition containing 99-50 parts by weight of either of said polypropylenes and 1-50 parts by weight of an ethylene-.alpha.-olefin copolymer elastomer, or a polypropylene formed by heat degradation of a syndiotactic or isotactic polypropylene and having an Mw/Mn of 3.0 or more.

Multi-layer blow molded article of polypropylene

Growing community of inventors

Chiba, Japan

Tamio Kawasumi