Stock material or miscellaneous articles – Composite – Of metal
Patent
1981-02-24
1983-08-09
Ives, P.
Stock material or miscellaneous articles
Composite
Of metal
4284758, 4284761, 4284769, 428483, 428469, 428516, 428520, 428910, 428 35, 428462, B32B 1508
Patent
active
043979165
ABSTRACT:
In a laminated multilayer structure composed of (A) a layer of a graft-modified ethylene resin grafted with an unsaturated carboxylic acid or a functional derivative thereof and (B) an oxygen- or nitrogen-containing polar resin layer or a metal layer in contact with the layer (A); the improvement wherein (1) the layer (A) consists of (i) 1 to 100% by weight of said graft-modified ethylene resin derived from an ethylene polymer which contains 0 to 15 mole % of at least one alpha-olefin having 3 to 30 carbon atoms as a comonomer and has an MI.sub.2 /[.eta]sup.-8.77 ratio in absolute value of not less than 15 and a density of 0.88 to 0.98 g/cm.sup.3, and (ii) 99 to 0% by weight of an unmodified ethylene polymer containing 0 to 50 mole % of at least one alpha-olefin having 3 to 30 carbon atoms as a comonomer and having an MI.sub.2 /[.eta]sup.-8.77 ratio in absolute value of not less than 15 and a density of 0.86 to 0.96 g/cm.sup.3, and (2) the layer (A) has (a) an ethylene content of not less than 80 mole %, (b) a content of the carboxylic acid or the derivative thereof of 0.01 to 10% by weight based on the weight of the layer (A), (c) a density of 0.88 to 0.98 g/cm.sup.3, and (d) an MI.sub.10 /MI.sub.2 ratio of from 5 to 18.
REFERENCES:
patent: 3931449 (1976-01-01), Hirata et al.
patent: 4058647 (1977-11-01), Inoue et al.
patent: 4269321 (1981-05-01), Ichinose et al.
patent: 4308084 (1981-12-01), Ohtusuki et al.
patent: 4311742 (1982-01-01), Otsuka
Ives P.
Mitsui Petrochemical Industries Ltd.
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