TH28137A - Plastic container with multiple layers - Google Patents

Abstract

DC60 (22/10/40) A multilayer plastic container consisting of layers (A) of a modified ethylene polymer mixture, which was later modified with carboxylic acid. Or their derivatives and their melt flow rates (MFR) measured in accordance with ASTM D1238 (at 190 ° C under load, 2,160 g / 10 min, density from 0.920 to 0.930 g / cm3, and components that cannot Soluble in 2 to 40% decks by weight at 90 ° C, this multi-layered plastic container can maintain sufficient adhesion. Even when it is exposed to gas or gasohol, it has excellent long-lasting durability. And show excellent adherence It can be used as an advantage as a vehicle gasoline tank. A multilayer plastic container consisting of layers (A) of a modified ethylene polymer mixture, which is subsequently modified with carboxylic acid. Or their derivatives and have a melt flow rate (MFR) measured in accordance with ASTM D1238 (at 190 ํ under packing, 2,160 g / 10 min, a density of 0.920 to .930 g / cm3, and a non-component). can Soluble in Kake 2 to 40% by weight at 90 ํ this multi-layered plastic container can maintain sufficient adhesion. Even when it is exposed to gas or gasohol, it has excellent long-lasting durability. And show excellent adherence It can be used as an advantage as a vehicle gasoline tank.

Claims (8)

1.Plastic containers To form a thin sheet consisting of at least a layer (B) of a polyethylene resin layer, a layer (A) of the modified ethylene polymer mixture, and a (C) of resins selected from a group containing Product from the Saponification Of ethylene-vinyl acetate copolymer and polyamide resin in the required level, modified ethylene polymer mixture of class (A ) Which performs graft modification With carboxylic acids Unsaturated silicones or their derivatives and with melt flow rates measured in accordance with ASTM D1238 (at 190 ํ under 2,160 g filling), at 0.1 to 3.0 g / 10 min, density at 0.920 to 0.930 g / cm3 and insoluble components in end-decane 2 to 40% by weight at 90 ํ where the modified ethylene polymer mixture of layer (A) Containing 2 to 30% by weight of the graphically modified ethylene polymer (A1) modified With carboxylic acid is not full The body or its derivative And a density of 0.930 to 0.980 g / cm3 and 70 to 98% by weight of unmodified ethylene polymer (A2) with a density of 0.910 to 0.940 g / cm3. 2.Plastic containers Of claim 1, where the polyethylene resin layer of class (B) is ethylene homopolymer or ethylene copolymer and a-O A lefin containing 3 to 10 carbon atoms 3.Multi-layer plastic containers Of claim 1 or 2, where the product of Saponification of class (C) is a polymers with 90 to 100% saponification levels and is obtained by superpositioning. Ethylene-vinyl acetate copolymer with 15 to 70% mol of ethylene content. 4.Plastic containers Of claim 1 or 2, where the polyamide resin layer (C) is selected from a group consisting of nylon 6, nylon 66, nylon 610, nylon 12, nylon 11, nylon mxd, nylon Morphology and copolymer nylon 5.Plastic containers Of any of the preceding claims, where there is an additional layer between class (B) and class (A). 6.Plastic containers Of claim 5, where the additional layer consists of the enclosed material Of multi-layer plastic containers 7. Fuel tanks for vehicles Containing Multi-layer plastic container Claim 1 8. Use of multi-layer plastic containers of claim 1 will be fuel tanks. For motor vehicles