Kuraray Co., Ltd.

Bridgestone Corporation

Amyris, Inc.

Yusuke Tanaka

Nahoto Hayashi

Masao Hikasa

Tetsuo Amamoto

Hideki Kitano

Shinya Oshita

Yosuke Jogo

Yusuke Nojima

Takatsugu Tanaka

Hiromitsu Sasaki

Yosuke Uehara

Yuwa Takahashi

Shota Suzuki

Provided is an inner liner for a pneumatic tire including no less than 8 resin-layers, the resin-layer having a layer A constituted with a resin composition containing a resin having gas barrier properties, and a layer B that is adjacent to the layer A and is constituted with a resin composition containing an elastomer, an extensional viscosity &#x3b7;of the resin composition of the layer A, and an extensional viscosity &#x3b7;of the resin composition of the layer B as determined at a predetermined temperature both being no less than 1,000 Pa&#xb7;s, and an extensional viscosity ratio &#x3b7;/&#x3b7;being no less than 0.2 and no greater than 10.

Inner liner for pneumatic tire, method for producing the same, and pneumatic tire

A film for a liquid packaging container, comprising at least one of a layer containing a resin composition (X) containing a polypropylene resin (a) and at least one of a hydrogenated block copolymer (b), the hydrogenated block copolymer (b) being a hydrogenated product of a block copolymer containing a polymer block (A) mainly containing an aromatic vinyl compound unit, and a polymer block (B) mainly containing an isoprene (Ip) unit, a butadiene (Bd) unit, or isoprene (Ip) and butadiene (Bd) units, in the resin composition (X), the hydrogenated block copolymer (b) having a phase separation structure having formed therein both (i) an island phase having a long axis of 1 &#x3bc;m or more, or a bicontinuous structure, and (ii) an island phase having a long axis of 300 nm or less, and in the resin composition (X), the mass ratio ((a)/((a)+(b))) of the polypropylene resin (a) and the hydrogenated block copolymer (b) being from 61/100 to 95/100.

Film for liquid packaging containers and liquid packaging container

A thermoplastic elastomer composition comprising 100 parts by mass of a hydrogenated block copolymer (A) comprising a polymer block (a) consisting of a structural unit derived from an aromatic vinyl compound and a polymer block (b) comprising 1 to 100% by mass of a structural unit (b1) derived from farnesene and comprising 99 to 0% by mass of a structural unit (b2) derived from a conjugated diene other than farnesene, a mass ratio [(a)/(b)] of the polymer block (a) to the polymer block (b) being 1/99 to 70/30; and 5 to 300 parts by mass of a polar group-containing olefinic polymer (B), is excellent in flexibility and molding processability and capable of adhering to a ceramic, a metal, a synthetic resin, or the like even through a heat treatment at low temperatures (for example, 190&#xb0; C. or lower) without requiring a primer treatment or the like.

Thermoplastic elastomer composition, molded article, and adhesive agent

To provide a multilayer structure having high gas bather property and crack resistance as well as excellent fatigue resistance, an inner liner for a pneumatic tire using the multilayer structure, and a pneumatic tire comprising the inner liner. According to the present invention, the multilayer structure includes a barrier layermade of polymer material with 50% or less elongation at break conforming to JIS K 7113 at 20&#xb0; C. and 65% RH and an elastomer layermade of polymer material with 100% or more elongation at break conforming to JIS K 7113 at 20&#xb0; C. and 65% RH, wherein a plastic deformation amount at the time of 100% strain input is larger than a deformation amount at a tolerance point.

Multilayer structure, inner liner for pneumatic tire, and pneumatic tire

To provide a multilayer structure having high gas barrier property and crack resistance as well as excellent fatigue resistance, an inner liner for a pneumatic tire using such a multilayer structure, and a pneumatic tire comprising the inner liner. According to the present invention, in a multilayer structureincluding a barrier layerand an elastomer layer, a proportion of a thickness of the elastomer layerin the multilayer structure ((U+U+ . . . +Un)/T) is 60% or more.

To provide a multilayer structure that may adhere to rubber material without the necessity of providing an adhesive layer, an inner liner and a pneumatic tire using the multilayer structure. According to the present invention, a multilayer structureis formed by alternately laminating elastomer layerscontaining thermoplastic elastomer and barrier layerscontaining a gas barrier resin, wherein an outermost layerlaminated uppermost among layers constituting the multilayer structurecontains an elastomer component that may heat-adhere to diene rubber.

Provided is a liquid packaging container having satisfactory flexibility and transparency, high heat-seal strength, high bag-breaking strength at normal temperature and low temperatures, and low (inner layer)-(inner layer) adhesiveness, which are properties important for liquid packaging containers for medical use. Specifically, provided is a liquid packaging container formed from a laminate of at least three layers including an inner layer formed from a resin composition (Y) as described below, an intermediate layer, and an outer layer formed from a resin composition (Z) as described below, the intermediate layer being formed from a resin composition (X) as described below:

Liquid packaging container

The present invention provides a thermoplastic polyurethane obtained by reacting organic diisocyanate (A), polymer polyol (B) having a number average molecular weight (Mn) of 1000-5000 and chain extender (C), wherein the chain extender (C) contains a straight chain diol (c-1) and a side chain alkyl group-containing diol (c-2), a molar ratio of the straight chain diol (c-1) and the side chain alkyl group-containing diol (c-2) (straight chain diol (c-1)/side chain alkyl group-containing diol (c-2)) in the chain extender (C) is 97/3-60/40, and a nitrogen atom content is not less than 1.5 mass % and less than 4.0 mass %.

Growing community of inventors

Kamisu, Japan

Yusuke Tanaka