Kuraray Co., Ltd.

Kurarayco., Ltd.

Kurray Co., Ltd.

Edgard Chow

Wataru Hirose

Astrid Torres

Kentaro Yoshida

Hiroyuki Shimo

Takaharu Kawahara

Tatsuya Hasegawa

Gene Medlock

Robert Armstrong

Diana Maya

Emilio Morales

A flexible pipe comprising at least one layer of ethylene-vinyl alcohol resin (EVOH) as the innermost layer, wherein the pipe is suitable for use under high pressure, is configured to retain mechanical properties at pressures up to at least about 1500 psig, and can also retain its structural function upon decompression.

Flexible high-pressure fluid conveying pipe

A gas permeable layer is formed from an ethylene-vinyl alcohol copolymer resin composition comprising an ethylene-vinyl alcohol copolymer (A), a polyolefin (B), and an acid-modified ethylene-&#x3b1;-olefin copolymer (C).

Gas permeable film and multilayer article for packaging

A monolayer film is provided which contains ethylene vinyl alcohol copolymer (EVOH), contamination from dirt and a compatibilizer, that can be used for producing trash bags and the like, as well as a method to successfully recycle fumigation films containing EVOH and contamination from dirt into such a monolayer film.

Monolayer film having recycle EVOH

A multilayer article having at least one layer of an ethylene vinyl alcohol (EVOH) resin composition comprising of an ethylene-vinyl alcohol copolymer, an unmodified ethylene-&#x3b1;-olefin copolymer and acid modified ethylene-&#x3b1;-olefin copolymer as described below, which is suitable for use in making (or as) a storage bag for agricultural products, food, drink, pharmaceutical, cosmetic, industrial chemical, detergent products.

Multilayer article suitable for use of storage bag for agricultural products

There is provided a co-injection-molded multilayer structure having a barrier layer and outer layers laminated on both sides of the barrier layer, wherein the barrier layer is made of a resin composition comprising an ethylene-vinyl alcohol copolymer (A) and an alkali metal salt (B) of a higher fatty acid having a melting point of 250&#xb0; C. or lower; a content of the alkali metal salt (B) in the barrier layer is 50 to 1500 ppm in terms of metal atoms; and the outer layers are made of a resin composition comprising an unmodified polypropylene (E) and a maleic anhydride-modified polypropylene (F) having a lower melt viscosity than that of the unmodified polypropylene (E). Although it has no adhesive layers, the co-injection-molded multilayer structure exhibits excellent adhesiveness between the barrier layer made of an EVOH resin composition and the outer layer made of a polypropylene resin composition.

Co-injection-molded multilayer structure

A multilayer article (such as a film) suitable for use as a fumigation barrier, the multilayer article comprising at least one an ethylene vinyl alcohol (EVOH) based barrier layer formed from a resin composition predominantly comprising an EVOH component of one or more specific types of ethylene-vinyl alcohol copolymers as described herein.

Multilayer article suitable for use as a fumigation barrier

A resin composition contains an ethylene-vinyl alcohol copolymer (A) in which an ethylene unit content is from 10 to 60 mol %, a hindered amine-based compound (B) having a 2,2,6,6-tetraalkylpiperidine ring structure and having an alkoxy group bonded to a nitrogen atom in the structure, and a hindered phenol-based compound (C) having an ester bond or an amide bond. The resin composition contains 0.1 to 5 parts by mass of the hindered amine-based compound (B) and 0.2 to 5 parts by mass of the hindered phenol-based compound (C) with respect to 100 parts by mass of the ethylene-vinyl alcohol copolymer (A), and a mass ratio (C)/(B) is from 0.2 to 3.6.

Resin composition and applications thereof

Provided is a polyvinyl chloride ('PVC')/ethylene-vinyl alcohol ('EVOH') multilayer sheet used for the fabrication of liners and covers for the geotechnical industry (&#x201c;geomembrane&#x201d;), which sheet has both good flexibility and excellent barrier properties to organic solvents and gases.

Flexible geomembrane

A silage film having at least one layer of a resin composition containing an ethylene-vinyl alcohol copolymer (A) and a hydroxy group-containing compound (B). In the resin composition containing the ethylene-vinyl alcohol copolymer (A) and the hydroxy group-containing compound (B), the hydroxy group-containing compound (B) has a molecular weight of less than or equal to 200, a ratio of number of hydroxy groups per molecule to the molecular weight ranging from 0.02 to 0.03, and a melting point of greater than or equal to 23&#xb0; C., and a content of the hydroxy group-containing compound (B) in the resin composition ranging from 3% to 15% by mass. The silage film has excellent oxygen barrier property and stretchability (suitability for wrapping) and can be suitably used for long-term storage of silage.

Silage film, wrapped fodder, and storage method of fodder

OBJECT An object is to provide a resin composition capable of forming a crosslinked product that is excellent in hot water resistance and excellent in interlayer adhesiveness when formed into a multilayered structure. SOLUTION The resin composition contains an ethylene-vinyl alcohol copolymer (A) and a crosslinking agent (B) with the crosslinking agent (B) in an amount of 0.6 to 15 parts by mass relative to 100 parts by mass of the ethylene-vinyl alcohol copolymer (A), the crosslinking agent (B) being a powder obtained by impregnating a porous body (BS) with a crosslinkable compound (BL) having three or more polymerizable groups and a melting point of no greater than 40&#xb0; C.

Crosslinkable resin composition, crosslinked product, and method for producing thereof, and multilayered structure

A resin composition containing an ethylene-vinylalcohol copolymer (A) and a hydroxyl group containing compound (B), the hydroxyl group containing compound (B) having a molecular weight of 200 or less, a ratio of the number of hydroxyl groups in one molecule relative to the molecular weight within a range of 0.02-0.03, and a melting point of 23&#xb0; C. or higher, the content of the hydroxyl group containing compound (B) being 3-15 mass % relative to the resin composition, a molded product using the same, and a multilayer structure including a layer composed of the resin composition.

Ethylene-vinylalcohol resin composition, molded product, and multilayer structure

To provide a resin composition comprising an ethylene-vinyl alcohol copolymer (A) having an ethylene content of from 15 to 65 mol % and a degree of saponification of 95 mol % or more, a phosphoric acid salt (B) which can form a hydrate, and a dispersing agent (C), wherein the dispersing agent (C) comprises at least one species selected from the group consisting of aliphatic acid salts, glycerol aliphatic acid esters and aliphatic acid amides, the resin composition comprises (A) and (B) in amounts of from 50 to 99 parts by weight and from 1 to 50 parts by weight, respectively, based on 100 parts by weight of (A) and (B) in total, and the resin composition comprises (C) in an amount of from 1 to 20 parts by weight based on 100 parts by weight of (B). This resin composition excels in gas barrier property and also in moisture resistance at high temperatures and high humidities. Therefore, it is suitable for food packaging containers to be retorted.

Growing community of inventors

Houston, TX, United States of America

Edgard Chow