US4370388A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Laminated multilayer structure
Assignee: Mitsui Chemicals Inc
•
Filing: 1980-03-11
•
Granted: 1983-01-25
•
Expires: 2000-03-11
Abstract
Abstract A laminated multilayer structure composed of a grafted high-density polyethylene resin layer directly attached to a layer of a resin selected from the group consisting of polyamide resins, polyester resins saponified copolymers of ethylene and vinyl acetate, or to a metal layer; characterized in that said grafted high-density polyethylene resin layer is composed of (a) 97 to 50 parts by weight, per 100 parts by weight of the resins (a) and (b) combined, of a high-density polyethylene resin having a density of 0.945 to 0.970 g/cm3 and being grafted with an aliphatic dicarboxylic acid or its functional derivative, with or without a high-density polyethylene resin having a density of 0.945 to 0.970 g/cm3, (b) 3 to 50 parts by weight, per 100 parts by weight of the resins (a) and (b) combined, of an ethylene/4-methyl-1-pentene copolymer having an ethylene content of 93 to 99.9 mole % and a melt index at 190 DEG C. of 0.1 to 10 g/10 min., and (c) 0 to 20 parts by weight, per 100 parts by weight of the resins (a) and (b) combined, of a rubbery synthetic polymer or copolymer.
Inventors
- 👤 Masaharu Mito
- 👤 Masahiro Koya
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 08:38
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/06; B32B27/08; B32B15/00; B32B15/04; B32B15/08; B32B25/00; B32B25/14; B32B27/32; C; C08; C08L; C08L51/00; C08L51/06; C09; C09D; C09D151/00; C09D151/06; B32B2323/00; B32B2323/04; B32B2323/043; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31678; Y10T428/31692; Y10T428/31696; Y10T428/31725; Y10T428/31739; Y10T428/31743; Y10T428/31746; Y10T428/3175; Y10T428/31757; Y10T428/31786; Y10T428/31797; Y10T428/31855; Y10T428/31909; Y10T428/31913; Y10T428/31917
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
198 words
A laminated multilayer structure composed of a grafted high-density polyethylene resin layer directly attached to a layer of a resin selected from the group consisting of polyamide resins, polyester resins, saponified copolymers of ethylene and vinyl acetate, or to a metal layer; characterized in that said grafted high-density polyethylene resin layer is composed of (a) 97 to 50 parts by weight, per 100 parts by weight of the resins (a) and (b) combined, of a high-density polyethylene resin having a density of 0.945 to 0.970 g/cm 3 and being grafted with an aliphatic dicarboxylic acid or its functional derivative, said resin being optionally mixed with a high-density polyethylene resin having a density of 0.945 to 0.970 g/cm 3 , (b) 3 to 50 parts by weight, per 100 parts by weight of the resins (a) and (b) combined, of an ethylene/4-methyl-1-pentene copolymer having an ethylene content of 93 to 99.5 mole% and a melt index at 190° C. of 0.1 to 10 g/10 min., and (c) 0 to 20 parts by weight, per 100 parts by weight of the resins (a) and (b) combined, of one member of the group consisting of a rubbery synthetic polymer and copolymer.
Claim 2
Dependent Claim
198 words
A laminated multilayer structure composed of a grafted high-density polyethylene resin layer directly attached to a layer of a resin selected from the group consisting of polyamide resins, polyester resins, saponified copolymers of ethylene and vinyl acetate, or to a metal layer; characterized in that said grafted high-density polyethylene resin layer is composed of (a) 97 to 50 parts by weight, per 100 parts by weight of the resins (a) and (b) combined, of a high-density polyethylene resin having a density of 0.945 to 0.970 g/cm 3 and being grafted with an aliphatic dicarboxylic acid or its functional derivative, said resin being optionally mixed with a high-density polyethylene resin having a density of 0.945 to 0.970 g/cm 3 , (b) 3 to 50 parts by weight, per 100 parts by weight of the resins (a) and (b) combined, of an ethylene/4-methyl-1-pentene copolymer having an ethylene content of 93 to 99.5 mole% and a melt index at 190° C. of 0.1 to 10 g/10 min., and (c) 0 to 20 parts by weight, per 100 parts by weight of the resins (a) and (b) combined, of one member of the group consisting of a rubbery synthetic polymer and copolymer.
Claim 3
Dependent Claim
21 words
The multilayer structure of claim 1 wherein said copolymer resin (b) has a density of 0.910 to 0.945 g/cm 3 .
Claim 4
Dependent Claim
39 words
The multilayer structure of claim 1 wherein the amount of the aliphatic dicarboxylic acid or its functional derivative grafted to said high-density polyethylene in said resin (a) is 0.01 to 10% by weight based on the grafted high-density polyethylene.
Claim 5
Dependent Claim
36 words
The multilayer structure of claim 1 wherein said resin (a) contains 0.001 to 10% by weight, based on the resin (a), of said aliphatic dicarboxylic acid or its functional derivative grafted to said high-density polyethylene resin.
Claim 6
Dependent Claim
45 words
The multilayer structure of claim 1 wherein said aliphatic dicarboxylic acid or its functional derivative is a member selected from the group consisting of unsaturated aliphatic dicarboxylic acids having 4 to 6 carbon atoms, and the acid anhydrides, esters, amides, imides and metal salts thereof.
Claim 7
Dependent Claim
20 words
The multilayer structure of claim 5 wherein said aliphatic dicarboxylic acid is maleic acid and said derivative is maleic anhydride.
Claim 8
Dependent Claim
60 words
The multilayer structure of claim 1 wherein said rubbery synthetic polymer or copolymer (c) is a member selected from the group consisting of ethylene/propylene copolymer rubber, ethylene/propylene diene copolymer rubber, polyisobutylene rubber, polybutadiene rubber, styrene/butadiene copolymer rubber, polychloroprene polymer rubber, polychloroprene copolymer rubber, polyisoprene rubber, chlorinated polyethylene rubber, and mixtures of at least two of these rubbers with each other.
Claim 9
Dependent Claim
27 words
The multilayer structure of claim 1 wherein grafted resin (a) is mixed with a high-density polyethylene resin having a density of 0.945 to 0.970 gm/cm 3 .
References Cited (Backward Citations)
US4076698A
Cited
US4076698B1
Cited
US3642746A
Cited
US3644318A
Cited
US4071674A
Cited
US4087587A
Cited
DE2658547A1
Cited
US4198327A
Cited
US4198327B1
Cited
US4190477A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-01-24 | 1986-07-26 | 1987-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-01-24 | 1990-07-26 | 1991-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-01-24 | 1994-07-26 | 1995-01-25 | $7700.00 | Window Closed / Lapsed |