Mitsui Petrochemical Industries, Ltd.

Mitsui Chemicals, Inc.

Yoshino Kogyosho Co., Ltd.

Japan Atomic Energy Research Institute

Hideshi Kawachi

Haruhiko Tanaka

Yuji Sawada

Mikio Nakagawa

Hiromi Shigemoto

Yohzoh Yamamoto

Fumio Yoshii

Keizo Makuuchi

Toshiyuki Hirose

Hideo Kushida

Masanobu Ishiyama

Shigetoshi Nishijima

Yasuo Futami

Yuichiro Terashi

Takahiro Kurihara

Sei Nakajima

Gen Miyamoto

Ryoji Sugawara

Keiji Okada

Masayoshi Yamaguchi

Satoru Moriya

Hiroshi Uehara

Kenichi Morizono

Shuji Minami

Masaharu Mito

Shigeyuki Yasui

Tomohiko Kimura

Andrzej Rokicki

Beatrice K Stein

Masahiro Inaba

John N Armor

Michio Tsugawa

A thermoplastic resin composition (Y) characterized by comprising (A) 20 to 64.9 wt % one or more ethylene copolymers comprising an ethylene/&#x3b1;-olefin copolymer, (B) 35 to 70 wt % metal hydroxide, and (C) 0.1 to 30 wt % grafted ethylene polymer. The resin composition has excellent flame retardancy and has satisfactory pliability/flexibility and excellent tensile properties. It is suitable for use as an insulating material or sheath for electric wires. Also provided are: a polymer composition (Z) having high flame retardancy, characterized by comprising relative to (AA) 100 parts by weight of a polymer such as a thermoplastic polymer or thermosetting polymer, in the ratio of (BB) 50 to 250 parts by weight of a metal hydroxide, (E) 0.1 to 40 parts by weight of a triazine ring containing compound, and (F) 0.1 to 40 parts by weight of a polyhydric alcohol; and a molded object obtained from the polymer composition. These are suitable for use as an insulating material or sheath for electric wires.

Thermoplastic resin composition, polymer composition, and molded product comprising the composition

Multilayered article, vessel and resin composition based on polyethylene

The adhesive ethylene copolymer composition of the invention comprises a specific long-chain branched ethylene/&agr;-olefin copolymer (or this copolymer and its graft-modified product) and a tackifier (or a specific ethylene/vinyl acetate copolymer), and has specific density, MFR, crystallinity and graft quantity. The composition containing the tackifier can form a layer having good adhesive force to polystyrene resins, ABS resin, polyacrylonitrile resins and ethylene/vinyl acetate copolymer saponified resins even in an atmosphere of high temperatures. The composition containing the ethylene/vinyl acetate copolymer can form a layer having good adhesive force to polyester resins, polycarbonate resins, polyvinylidene chloride resins and ethylene/vinyl acetate saponified resins even in an atmosphere of high temperatures. The other adhesive ethylene copolymer composition of the invention comprises a blend of a graft-modified linear ethylene/&agr;-olefin copolymer and an olefin elastomer. This composition has excellent heat stability, moldability and transparency, and can form a film layer having good adhesive force to metals and materials of high polarity.

Adhesive ethylene copolymer resin compositions and laminates using the same

The modified polypropylene composition of the invention comprises (A) modified polypropylene having been partially or wholly graft modified with an unsaturated carboxylic acid or its derivative, (B) an amorphous or low-crystalline ethylene/&agr;-olefin copolymer having a specific MFR and a specific density and (C) a styrene elastomer, in a specific ratio. The component (A) is a graft modification product of a propylene homopolymer and/or a graft modification product of a propylene/&agr;-olefin random copolymer. The laminate of the invention comprises a composition layer comprising the modified polypropylene composition and a resin layer provided on one or both surfaces of the composition layer. By the use of the modified polypropylene composition as a laminate-forming composition or an adhesive resin composition, there can be obtained a laminate which has excellent interlaminar strength and which can be prevented from lowering of the interlaminar strength even if it is subjected to a heat treatment at a high temperature such as a temperature of 80 to 125&deg; C.

Modified polypropylene composition and laminate using the composition

Disclosed is a specific adhesive polyethylene composition comprising &lsqb;1&rsqb; a modified ethylene/&agr;-olefin copolymer resin or elastomer obtained by modifying a specific ethylene/&agr;-olefin copolymer resin or elastomer, each of which comprises ethylene and an &agr;-olefin of 3 to 20 carbon atoms, with an unsaturated carboxylic acid or anhydride, ester, amide, imide or metallic salt derivative of a unsaturated carboxylic acid thereof, &lsqb;2&rsqb; an unmodified ethylene/&agr;-olefin copolymer resin and/or an unmodified ethylene/&agr;-olefin copolymer elastomer and &lsqb;3&rsqb; a tackifier. Also disclosed is a multi-layer laminated film of 3 or more layers in which a layer of the above composition is interposed between an ethylene polymer layer and either a polyamide resin layer, an ethylene/vinyl alcohol copolymer layer or a layer of a mixture of polyamide resin and ethylene/vinyl alcohol copolymer. The adhesive polyethylene composition shows excellent adhesion strength to ethylene polymers, polyamide resins and ethylene/vinyl alcohol copolymers, high heat-sealing strength and heat resistance. The multi-layer laminated film shows excellent strength, heat resistance and gas barrier properties, and besides this film has heat shrinkability, so that the film is suitably used as a shrink film.

Adhesive polyethylene compositions and multi-layer laminated films using the same

An adhesive ethylene copolymer resin composition blend of a modified ethylene/&agr;-olefin copolymer obtained by graft-modifying an unmodified linear ethylene/&agr;-olefin copolymer comprising ethylene and an a-olefin of 3 to 20 carbon atoms with an unsaturated carboxylic acid or its derivative, or the unmodified ethylene/&agr;-olefin copolymer and the modified ethylene/&agr;-olefin copolymer and an olefin elastomer (F) The linear ethylene/&agr;-olefin copolymer being prepared by the use of an olefin polymerization catalyst including a Group IV transition metal compound (a) containing a ligand having cyclopentadienyl skeleton and an organoaluminum oxy-compound (b). The adhesive ethylene copolymer resin composition can be used as a layer to form a laminate with a layer of a polar material or a layer of a metal. The polar material layer can be a layer of an ethylene/vinyl alcohol copolymer, a layer of a polyamide or a layer of a polyester.

Multi-layer laminates and uses thereof

Adhesive resin composition and laminate made using the same as adhesive

A squeezable tubular container (a) which is formed from a composition containing a polyethylene having a density of 0.900 to 0.975 g/cm.sup.3 and an ethylene/.alpha.-olefin copolymer having a density smaller than 0.900 g/cm.sup.3, (b) has a crosslinking caused under irradiation with electron beam, and (c) is sterilizable at a high temperature or is heat-sealable or ultrasonically sealable; and a process for the production thereof.

Squeezable tubular container and process for the production thereof

A multilayer laminate film comprising (A) a first layer comprising a propylene polymer and oriented in at least one direction, (B) a second layer comprising a propylene copolymer having a melting point lower than the melting point of the propylene polymer of the first layer, (C) a third layer comprising a polymer composition comprising a graft modified olefin polymer in which an unsaturated carboxylic acid or a derivative thereof is grafted, and (D) a fourth layer comprising an ethylene vinyl alcohol copolymer, these four layers being laminated in the above order. The above multilayer laminate exhibits excellent interlaminar adhesion and has excellent heat resistance.

Multilayer laminate film

Disclosed are (1) an adhesive polypropylene resin composition comprising (a) 50 to 90 parts by weight of a modified polypropylene or a composition containing said modified polypropylene, said modified polypropylene being graft-modified with at least one monomer selected from the group consisting of an unsaturated carboxylic acid from the group consisting of an unsaturated carboxylic acid and a derivative thereof and (b) 10 to 50 parts by weight of a modified polyolefin other than the modified polypropylene or the composition (a), said modified polyolefin being grafted with at least one monomer selected from the group consisting of an unsaturated carboxylic acid and a derivative thereof, and (2) a multi layer laminate body comprising (i) a layer of a polyolefin (ii) a layer of the above-said adhesive polypropylene resin composition and (iii) a layer of a polyamide resin and/or an ethylene/vinyl alcohol copolymer, said layers being laminated in the order of (i), (ii) and (iii). The composition of (1) has an excellent adhesion capability for a polyolefin resin layer such as polypropylene layer and also a layer of polyamide resin and/or an ethylene/vinyl alcohol copolymer resin layers.

Adhesive polypropylene resin composition and multi-layer laminate body

A polyolefin multilayer laminate in which a first layer (A) made of a cycloolefin-based resin, such as an ethylene/cycloolefin random copolymer resulting from copolymerization of ethylene and a cycloolefin represented by the formula (1) given below, or a cycloolefin-based resin blend and a second layer (B) made of an olefin (co)polymer or a composition containing it are laminated. This laminate can be used as a packaging material which is superior in the interlayer adhesion, shapability, moistureproof property, transparency, flexibility, easiness of hand-cutting, heat-sealability and dead-hold property. Formula (1) comprises ##STR1## in which n and q are 0 or 1, m is 0 or any positive integer, R.sup.1 -R.sup.18 and R.sup.a and R.sup.b denote each H, a halogen atom or a hydrocarbon group, wherein R.sup.15 -R.sup.18 may form, by combining with each other, a monocyclic or polycyclic ring, which may have double bond(s), and wherein R.sup.15 -R.sup.16 may have terminal-located alkylidene group.

Polyolefin multilayer laminate, vessel and packaging material

An adhesive resin composition comprising 1 to 30 parts by weight of a graft copolymerized polypropylene grafted partially or totally with 0.01 to 15 weight % of an unsaturated carboxylic acid or its derivatives and 100 parts by weight of a soft polymer, wherein the soft polymer is a styrene elastomer.

Adhesive resin composition, laminate comprising this composition as

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Ichihara, Japan

Hideshi Kawachi