Multi-layer container
AssigneeMitsubishi Petrochemical Co., Ltd.
InventorsKeiichi Saito, Koji Nishida
Life of this patent
Estimating the term…
Abstract
A multi-layer container having at least layer A comprising a polyolefin resin having an MFR of from 0.001 to 0.5 dg/min, layer B (adhesive layer) comprising an .alpha.,.beta.-unsaturated carboxylic acid (or anhydride)-modified polyolefin resin, and layer C comprising polyamide, polyphenylene ether, a compatibilizer, and an impact modifier, in which the polyphenylene ether is finely dispersed in the polyamide matrix. The container has excellent impermeability to hydrocarbon solvents and low-temperature impact resistance and is useful particularly as a gasoline tank.
Claims11
A low temperature impact resistant multi-layer container which is impermeable to hydrocarbon solvents comprising a layer A comprising a polyolefin resin having a melt flow rate, measured at 190.degree. C. under a load of 2.16 kg, of from 0.001 to 0.02 dg/min, a layer B comprising a modified polyolefin resin modified with a maleic anhydride having a maleic anhydride content of from 0.01 to 5% by weight and a melt flow rate of 0.001 to 20 dg/min, and a layer C comprising a polyamide-based resin composition, wherein said resin composition comprises
- (C-1) from 40 to 90% by weight of a polyamide resin having a relative viscosity of from 2.0 to 8.0,
- (C-2) from 10 to 60% by weight of a polyphenylene ether resin having an intrinsic viscosity of from 0.25 to 0.90 dl/g,
- (C-3) from 5 to 50 parts by weight, per 100 parts by weight of the sum of (C-1) and (C-2), of a compatibilizer, an impact modifier, and
- (C-4) from 0.05 to 30 parts by weight, per 100 parts by weight of the sum of (C-1) and (C-2), of a compatibilizer,
- wherein said polyphenylene ether resin forms a dispersed phase having a number average particle size of not more than 1 .mu.m, and said polyamide resin forms a continuous phase and has a crystallinity of at least 20% and wherein said layers A, B, and C are in the order of A/B/C or A/B/C/B/A.
Dependencies are inferred from the claim text.