US 5,532,030 AGranted

Polyolefin multilayer laminate, vessel and packaging material

AssigneeMitsui Petrochemical Industries, Ltd.

InventorsToshiyuki Hirose, Shigetoshi Nishijima, Yohzoh Yamamoto, Hideshi Kawachi, Michio Tsugawa

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Abstract

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.

Claims15

Dependent claims

A polyolefin multilayer laminate, comprising

(A) a first layer made of a cycloolefin-based resin composition composed of at least one cycloolefin-based resin selected from the group consisting of
(a-1) an ethylene/cycloolefin random copolymer obtained by copolymerizing a cycloolefin represented by the general formula (1) or (2) given below with ethylene,
(a-2) a ring-opening (co)polymer of cycloolefin(s) represented by the general formula (1) or (2) given below or its hydrogenation product, and
(a-3) a graft-modification product of said ethylene/cycloolefin random copolymer (a-1) or of the ring-opening (co)polymer or its hydrogenation product (a-2), and a polyolefin, and
(B) a second layer made of an olefin (co)polymer or a composition containing it:
##STR12## wherein n is zero or 1, m is zero or any positive integer, q is zero or 1, R.sup.1 -R.sup.18 as well as R.sup.a and R.sup.b represent each independently of each other an atom or a radical selected from the group consisting of hydrogen atom, halogen atoms and hydrocarbon groups, wherein R.sup.15 -R.sup.18 may form a monocyclic ring or a polycyclic ring by combining with each other or may form an alkylidene group by a chemical combination of R.sup.15 with R.sup.16 or R.sup.17 with R.sup.18 and wherein the monocyclic or polycyclic ring formed from R.sup.15 -R.sup.18 may have one or more double bonds and, in the case of q=0, a five-membered ring is formed thereby joining the chemical bonds together;
and ##STR13## wherein m is zero or any positive integer, h is zero or any positive integer, j and k denote each zero, 1 or 2, R.sup.7 -R.sup.15 as well as R.sup.17 -R.sup.18 represent each independently of each other an atom or a radical selected from the group consisting of hydrogen atom, halogen atoms and hydrocarbon groups and R.sup.19 -R.sup.27 represent each independently of each other an atom or a radical selected from the group consisting of hydrogen atom, halogen atoms, hydrocarbon groups and alkoxy groups.

4 more elements

A polyolefin multilayer laminate, comprising

(A) a first layer selected from the group consisting of
(A1) a layer made of at least one cycloolefin-based resin selected from the group consisting of
(a1) an ethylene/cycloolefin random copolymer obtained by copolymerizing a cycloolefin represented by the general formula (1) or (2) given below with ethylene,
(a-2) a ring-opening (co)polymer of cycloolefin(s) represented by the general formula (1) or (2) given below or its hydrogenation product, and
(a-3) a graft-modification product of said ethylene/cycloolefin random copolymer (a-1) or of the ring-opening (co)polymer or its hydrogenation product (a-2), and
(A2) a layer made of a cycloolefein-based resin composition composed of
(a) at least one cycloolefin-based resin selected from the group consisting of the ethylene/cycloolefin random copolymer (a-1), the ring-opening (co)polymer or its hydrogenation product (a-2) and the graft-modification product (a-3) and
(b) a polyolefin, and
(B) a second layer made of an olefin (co)polymer or a composition containing it, wherein the layers (A) and (B) are bonded by
(C) an interposed third layer made of a soft, low- or non-crystalline copolymeric resin or resin blend having a degree of crystallinity of not higher than 40% and a glass transition temperature of not higher than 0.degree. C.:
##STR14## wherein n is zero or 1, m is zero or any positive integer, q is zero or 1, R.sup.1 -R.sup.18 as well as R.sup.a and R.sup.b represent each independently of each other an atom or a radical selected from the group consisting of hydrogen atom, halogen atoms and hydrocarbon groups, wherein R.sup.15 -R.sup.18 may form a monocyclic ring or a polycyclic ring by combining with each other or may form an alkylidene group by a chemical combination of R.sup.15 with R.sup.16 or R.sup.17 with R.sup.18 and wherein the monocyclic or polycyclic ring formed from R.sup.15 -R.sup.18 may have one or more double bonds and, in the case of q=0, a five-membered ring is formed there by joining the chemical bonds together;
and ##STR15## wherein m is zero or any positive integer, h is zero or any positive interger, j and k denote each zero, 1 or 2, R.sup.7 -R.sup.15 as well as R.sup.17 -R.sup.18 represent each independently of each other an atom or a radical selected from the group consisting of hydrogen atom, halogen atoms and hydrocarbon groups and R.sup.19 -R.sup.27 represent each independently of each other an atom or a radical selected from the group consisting of hydrogen atom, halogen atoms, hydrocarbon groups and alkoxy groups.

9 more elements

A vessel or a packaging material made of a polyolefin multilayer laminate, comprising

(A) a first layer made of a cycloolefin-based resin composition composed of at least one cycloolefin-based resin selected from the group consisting of
(a-1) an ethylene/cycloolefin random copolymer obtained by copolymerizing a cycloolefin represented by the general formula (1) or (2) given below with ethylene,
(a-2) a ring-opening (co)polymer of cycloolefin(s) represented by the general formula (1) or (2) given below or its hydrogenation product, and
(a-3) a graft-modification product of said ethylene/cycloolefin random copolymer (a-1) or of the ring-opening (co)polymer or its hydrogenation product (a-2), and a polyolefin, and
(B) a second layer made of an olefin (co)polymer or a composition containing it:
##STR16## wherein n is zero or 1, m is zero or any positive integer, q is zero or 1, R.sup.1 -R.sup.18 as well as R.sup.a and R.sup.b represent each independently of each other an atom or a radical selected from the group consisting of hydrogen atom, halogen atoms and hydrocarbon groups, wherein R.sup.15 -R.sup.18 may form a monocyclic ring or a polycyclic ring by combining with each other or may form an alkylidene group by a chemical combination of R.sup.15 with R.sup.16 or R.sup.17 with R.sup.18 and wherein the monocyclic or polycyclic ring formed from R.sup.15 -R.sup.18 may have one or more double bonds and, in the case of q=0, a five-membered ring is formed thereby joining the chemical bonds together;
and ##STR17## wherein m is zero or any positive integer, h is zero or any positive integer, j and k denote each zero, 1 or 2, R.sup.7 -R.sup.15 as well as R.sup.17 -R.sup.18 represent each independently of each other an atom or a radical selected from the group consisting of hydrogen atom, halogen atoms and hydrocarbon groups and R.sup.19 -R.sup.27 represent each independently of each other an atom or a radical selected from the group consisting of hydrogen atom, halogen atoms, hydrocarbon groups and alkoxy groups.

4 more elements

A vessel or a packaging material made of a polyolefin multilayer laminate, comprising

(A) a first layer selected from the group consisting of
(A1) a layer made of at least one cycloolefin-based resin selected from the group consisting of
(a-1) an ethylene/cycloolefin random copolymer obtained by copolymerizing a cycloolefin represented by the general formula (1) or (2) given below with ethylene,
(a-2) a ring-opening (co)polymer of cycloolefin(s) represented by the general formula (1) or (2) given below or its hydrogenation product, and
(a-3) a graft-modification product of said ethylene/cycloolefin random copolymer (a-1) or of the ring-opening (co)polymer or its hydrogenation product (a-2), and
(A2) a layer made of a cycloolefin-based resin composition composed of
(a) at least one cycloolefin-based resin selected from the group consisting of the ethylene/cycloolefin random copolymer (a-1), the ring-opening (co)polymer or its hydrogenation product (a-2) and the graft-modification product (a-3), and
(b) a polyolefin, and
(B) a second layer made of an olefin (co)polymer or a composition containing it, wherein the layers (A) and (B) are bonded by
(C) an interposed third layer made of a soft, low-or non-crystalline copolymeric resin or resin blend having a degree of crystallinity of not higher than 40% and a glass transition temperature of not higher than 0.degree. C.:
##STR18## wherein n is zero or 1, m is zero or any positive integer, q is zero or 1, R.sup.1 -R.sup.18 as well as R.sup.a and R.sup.b represent each independently of each other an atom or a radical selected from the group consisting of hydrogen atom, halogen atoms and hydrocarbon groups, wherein R.sup.15 -R.sup.18 may form a monocyclic ring or a polycyclic ring by combining with each other or may form an alkylidene group by a chemical combination of R.sup.15 with R.sup.16 or R.sup.17 with R.sup.18 and wherein the monocyclic or polycyclic ring formed from R.sup.15 -R.sup.18 may have one or more double bonds and, in the case of q=0, a five-membered ring is formed thereby joining the chemical bonds together;
and ##STR19## wherein m is zero or any positive integer, h is zero or any positive integer, j and k denote each zero, 1 or 2, R.sup.7 -R.sup.15 as well as R.sup.17 -R.sup.18 represent each independently of each other an atom or a radical selected from the group consisting of hydrogen atom, halogen atoms and hydrocarbon groups and R.sup.19 -R.sup.27 represent each independently of each other an atom or a radical selected from the group consisting of hydrogen atom, halogen atoms, hydrocarbon groups and alkoxy groups.

9 more elements

Dependencies are inferred from the claim text.

Facts

Application: 08/451,812Filed 26 May 1995 · continuation
Priority: JP 5-26704526 Oct 1993
Granted: 2 Jul 1996
Term ends: Not estimatedThe source records don’t support an estimate.

Classification17 codes

B32B 27/08
As the main or only constituent of a layer, which is next to another layer of the same or of a different material: of synthetic resin
B32B 7/12
Interconnection of layers: using interposed adhesives or interposed materials with bonding properties
B32B 27/32
Layered products comprising a layer of synthetic resin: comprising polyolefins
B32B 27/325
Comprising polyolefins : comprising polycycloolefins