Patent EP0619678A2 successfully refreshed from Google Patents.
Patent EP0117516A2 successfully refreshed from Google Patents.
EP0117516A2
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EP
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Heat-resistant laminates
Assignee: Kureha Corp
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Filing: 1984-02-21
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Granted: —
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Expires: 2004-02-21
Abstract
Abstract Disclosed herein are a heat-resistant laminate comprising a first layer, as one of the outer layers thereof, made of a polymer of propylene or a polyamide; a seventh layer, as the other outer layer thereof, made of a polyolefin or a polyamide; a fourth layer, as a gas-barrier layer, made of a polymer of vinylidene chloride; a second layer and a sixth layer, as adhesive layers (A), made of a modified polyolefin or a mixture of not less than 90% by weight of the modified polyolefin and not more than 10% by weight of a copolymer of ethylene and an acrylic ester or a modified copolymer of ethylene and an acrylic ester and respectively directly jointed to the first layer and the seventh layer; a third layer and a fifth layer, as adhesive layers (B), made of a mixture of 10 to 30% by weight of a modified polyolefin and 90 to 70% by weight of a copolymer of ethylene and an acrylic ester or a modified copolymer of ethylene and an acrylic ester and respectively disposed between the second layer and the fourth layer, and between the fourth layer and the sixth layer and respectively directly jointed to the gas-barrier layer and the adhesive layers (A), and a process for preparing the same.
Inventors
- 👤 Isao Ouchi
- 👤 Hideo Yusa
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 13:29
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/06; B32B27/08; B29; B29C; B29C48/00; B29C48/03; B29C48/07; B29C48/08; B29C48/16; B29C48/18; B29C48/185; B32B27/30; B32B27/304; B32B27/308; B32B27/32; B32B27/322; B32B27/34; B32B27/36; B32B2250/00; B32B2250/05; B32B2250/24; B32B2307/00; B32B2307/30; B32B2307/306; B32B2323/00; B32B2323/10; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31725; Y10T428/3175; Y10T428/31855; Y10T428/31909; Y10T428/31913; Y10T428/3192; Y10T428/31928
Claims Analysis
Total Claims: 38
Claim 1
Independent Claim
175 words
A heat-resistant laminate comprising a first layer of a polymer of propylene or a polyamide; a seventh layer of a polyolefin or a polyamide; a fourth layer of a polymer of vinylidene chloride; a second layer and a sixth layer of a modified polyolefin or a mixture of not less than 90 % of the modified polyolefin and not more than 10 % by weight of a copolymer of ethylene and an acrylic ester or a modified copolymer of ethylene and an acrylic ester, the second layer and sixth layer being respectively directly jointed to the first layer and the seventh layer; a third layer and a fifth layer of a mixture of 10 to 30 % by weight of a modified polyolefin and 90 to 70 % by weight of a copolymer of ethylene and an acrylic ester or a modified copolymer of ethylene and an acrylic ester, the third layer and fifth layer being respectively disposed between the second layer and the fourth layer, and between the fourth layer and the sixth layer.
Claim 2
Dependent Claim
175 words
A heat-resistant laminate comprising a first layer of a polymer of propylene or a polyamide; a seventh layer of a polyolefin or a polyamide; a fourth layer of a polymer of vinylidene chloride; a second layer and a sixth layer of a modified polyolefin or a mixture of not less than 90 % of the modified polyolefin and not more than 10 % by weight of a copolymer of ethylene and an acrylic ester or a modified copolymer of ethylene and an acrylic ester, the second layer and sixth layer being respectively directly jointed to the first layer and the seventh layer; a third layer and a fifth layer of a mixture of 10 to 30 % by weight of a modified polyolefin and 90 to 70 % by weight of a copolymer of ethylene and an acrylic ester or a modified copolymer of ethylene and an acrylic ester, the third layer and fifth layer being respectively disposed between the second layer and the fourth layer, and between the fourth layer and the sixth layer.
Claim 3
Dependent Claim
32 words
A heat-resistant laminate according to claim 1, wherein said polymer of propylene is a polypropylene or a copolymer of propylene and ethylene containing not less than 90% by weight of propylene units.
Claim 4
Dependent Claim
25 words
A heat-resistant laminate according to claim 2, wherein the crystal melting point of said polymer of propylene is in a range of 135 to 165°C.
Claim 5
Dependent Claim
66 words
A heat-resistant laminate according to claim 1, wherein said polyolefin is selected from the group consisting of polypropylene, copolymers of propylene and ethylene containing not less than 90% by weight of propylene units, poly(4-methylpentene), polybutene, high density polyethylene, medium density polyethylene, linear low density polyethylene, a mixture of any one thereof and another polyolefin containing not less than 50% by weight of said any one thereof.
Claim 6
Dependent Claim
20 words
A heat-resistant laminate according to claim 4, wherein the crystal melting point of said polyolefin is not less than 118°C.
Claim 7
Dependent Claim
31 words
A heat-resistant laminate according to claim 1, wherein said polyamide is selected from the group consisting of nylon 6, nylon 66, nylon 6-66, nylon 610, nylon 12, nylon 6-66-610, nylon 6-66-610-12.
Claim 8
Dependent Claim
50 words
A heat-resistant laminate according to claim 1, wherein said polymer of vinylidene chloride is a copolymer of 65 to 95% by weight of vinylidene chloride and 35 to 5% by weight of at least one comonomer which has at least one carbon-carbon unsaturated bond and is copolymerizable with vinylidene chloride.
Claim 9
Dependent Claim
34 words
A heat-resistant laminate according to claim 1, wherein said modified polyolefin is an acid-modified resin prepared by modifying a polyolefin as a base resin with an unsaturated carboxylic acid, or a metal salt thereof.
Claim 10
Dependent Claim
13 words
A heat-resistant laminate according to claim 8, wherein said polyolefin is a polypropylene.
Claim 11
Dependent Claim
22 words
A heat-resistant laminate according to claim 3, wherein said unsaturated carboxylic acid is acrylic acid, metacrylic acid, maleic acid or maleic anhydride.
Claim 12
Dependent Claim
27 words
A heat-resistant laminate according to claim 8, wherein the content of said unsaturated carboxylic acid therein is not more than 10% by weight of said acid-modified resin.
Claim 13
Dependent Claim
44 words
A heat-resistant laminate according to claim 1, wherein said modified copolymer of ethylene and an acrylic ester is an acid-modified resin prepared by modifying a copolymer of ethylene and an acrylic ester as a base with an unsaturated carboxylic acid, or a salt thereof.
Claim 14
Dependent Claim
18 words
A heat-resistant laminate according to claim 12, wherein said acrylic ester is a C 1 to C8-alkyl acrylate.
Claim 15
Dependent Claim
35 words
A heat-resistant laminate according to claim 12, wherein the content of said acrylic ester units in said copolymer of ethylene and an acrylic ester is in a range of 5 to 25 % by weight.
Claim 16
Dependent Claim
22 words
A heat-resistant laminate according to claim 12, wherein said unsaturated carboxylic acid is acrylic acid, metacrylic acid, maleic acid or maleic anhydride.
Claim 17
Dependent Claim
34 words
A heat-resistant laminate according to claim 12, wherein the content of said unsaturated carboxylic acid therein is not less than 10 % by weight of said modified copolymer of ethylene and an acrylic ester.
Claim 18
Dependent Claim
20 words
A heat-resistant laminate according to claim 1, wherein the total thickness of said heat-resistant laminate is 40 to 1000 micrometers.
Claim 19
Dependent Claim
62 words
A heat-resistant laminate according to claim 1, wherein said first layer is made of a resin selected from the group consisting of copolymers of propylene and ethylene, nylon 6-66 and nylon 6 and said seventh layer is made of a resin selected from the group consisting of copolymers of propylene and ethylene, high density polyethylene, linear low density polyethylene and nylon 6.
Claim 20
Dependent Claim
223 words
A process for preparing a heat-resistant laminate, comprising the steps of: providing a polymer of propylene or a polyamide as a first layer; a polyolefin or a polyamide as a seventh layer; a polymer of vinylidene chloride as a fourth layer; a modified polyolefin or a mixture of not less than 90% by weight of a modified polyolefin and not more than 10% by weight of a copolymer of ethylene and an acrylic ester or a modified copolymer of ethylene and an acrylic ester as second and sixth layers and a mixture of 10 to 30 % by weight of a modified polyolefin and 90 to 70% by weight of a copolymer of ethylene and an acrylic ester or a modified copolymer of ethylene and an acrylic ester as third and fifth layers in a plasticized condition within a die, co-extruding these resins in the configuration wherein the first layer is one of the outer layers; seventh layer is the other outer layer; the fourth layer is the gas-barrier layer; the second and sixth layers are respectively directly jointed to the respective first and seventh layers and the third and fifth layers are respectively disposed between the fourth layer and the second layer and between the fourth layer and the sixth layer, and cooling the thus coextruded material, thereby obtaining said heat-resistant laminate.
Claim 21
Dependent Claim
223 words
A process for preparing a heat-resistant laminate, comprising the steps of: providing a polymer of propylene or a polyamide as a first layer; a polyolefin or a polyamide as a seventh layer; a polymer of vinylidene chloride as a fourth layer; a modified polyolefin or a mixture of not less than 90% by weight of a modified polyolefin and not more than 10% by weight of a copolymer of ethylene and an acrylic ester or a modified copolymer of ethylene and an acrylic ester as second and sixth layers and a mixture of 10 to 30 % by weight of a modified polyolefin and 90 to 70% by weight of a copolymer of ethylene and an acrylic ester or a modified copolymer of ethylene and an acrylic ester as third and fifth layers in a plasticized condition within a die, co-extruding these resins in the configuration wherein the first layer is one of the outer layers; seventh layer is the other outer layer; the fourth layer is the gas-barrier layer; the second and sixth layers are respectively directly jointed to the respective first and seventh layers and the third and fifth layers are respectively disposed between the fourth layer and the second layer and between the fourth layer and the sixth layer, and cooling the thus coextruded material, thereby obtaining said heat-resistant laminate.
Claim 22
Dependent Claim
28 words
A process according to claim 19, wherein said polymer of propylene is a copolymer of ethylene and propylene containing not less than 90% by weight of propylene units.
Claim 23
Dependent Claim
26 words
A process according to claim 20, wherein the crystal melting point of said copolymer of ethylene and propylene is in a range of 135 to 165°C.
Claim 24
Dependent Claim
81 words
A process according to claim 19, wherein said polyolefin is selected from the group consisting of polypropylene, a copolymer of ethylene and propylene containing not less than 90% by weight of propylene units, poly(4-methylpentene), polybutene, high density polyethylene, medium density polyethylene, linear low density polyethylene, a mixture of at least two of said polymers and a mixture of at least one of said polymers and another polyolefin containing not less than 50% by weight of at least one of said polymers.
Claim 25
Dependent Claim
18 words
A process according to claim 22, wherein the crystal melting point of said polyolefin is higher than 118°C.
Claim 26
Dependent Claim
31 words
A process according to claim 19, wherein said polyamide is selected from the group consisting of nylon 6, nylon 66, nylon 6-66, nylon 610, nylon 12, nylon 6-66-610 and nylon 6-66-610-12.
Claim 27
Dependent Claim
45 words
A process according to claim 19, wherein said polymer of vinylidene chloride is a copolymer of 65 to 95% by weight of vinylidene chloride units and 35 to 5% by weight of comonomer units of at least one of unsaturated comonomer copolymerizable with vinylidene chloride.
Claim 28
Dependent Claim
29 words
A process according to claim 19, wherein said modified polyolefin is an acid-modified polyolefin prepared by modifying a polyolefin with an unsaturated carboxylic acid or a metal salt thereof.
Claim 29
Dependent Claim
11 words
A process according to claim 26, wherein said polyolefin is polypropylene.
Claim 30
Dependent Claim
21 words
A process according to claim 26, wherein said unsaturated carboxylic acid is acrylic acid, metacrylic acid, maleic acid or maleic anhydride.
Claim 31
Dependent Claim
25 words
A process according to claim 26, wherein the content of said unsaturated carboxylic acid in said acid-modified polyolefin is not more than 10% by weight.
Claim 32
Dependent Claim
47 words
A process according to claim 19, wherein said modified copolymer of ethylene and an acrylic ester is an acid-modified copolymer of ethylene and an acrylic ester prepared by modifying said copolymer of ethylene and an acrylic ester with an unsaturated carboxylic acid or a metal salt thereof.
Claim 33
Dependent Claim
19 words
A process according to claim 30, wherein said acrylic ester is a C l - C 8 -alkyl acrylate.
Claim 34
Dependent Claim
30 words
A process according to claim 30, wherein the content of units of said acrylic ester in said copolymer of ethylene and said acrylic ester is 5 to 25% by weight.
Claim 35
Dependent Claim
21 words
A process according to claim 30, wherein said unsaturated carboxylic acid is acrylic acid, metacrylic acid, maleic acid or maleic anhydride.
Claim 36
Dependent Claim
31 words
A process according to claim 30, wherein the content of said unsaturated carboxylic acid in said modified copolymer of ethylene and an acrylic ester is not more than 10% by weight.
Claim 37
Dependent Claim
18 words
A process according to claim 19, wherein the thickness of said heat-resistant laminate is 40 to 1000 micrometers.
Claim 38
Dependent Claim
63 words
A process according to claim 19, wherein said first layer is formed from a member selected from the group consisting of a copolymer of ethylene and propylene, nylon 6 and nylon 6-66, and said seventh layer is formed from a member selected from the group consisting of a copolymer of ethylene and propylene, high density polyethylene, linear low density polyethylene and nylon 6.
References Cited (Backward Citations)
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