US5766751A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Laminate, laminate film and shaped article comprising inorganic laminar compound
Assignee: Sumitomo Chemical Co Ltd
•
Filing: 1995-01-24
•
Granted: 1998-06-16
•
Expires: 2015-01-24
Abstract
Abstract PCT No. PCT/JP95/00073 Sec. 371 Date Sep. 22, 1995 Sec. 102(e) Date Sep. 22, 1995 PCT Filed Jan. 24, 1995 PCT Pub. No. WO95/19887 PCT Pub. Date Jul. 27, 1995A laminate, laminate film or shaped article, which includes: a layer of a substance having a gas barrier property; and at least one layer or portion (1) disposed thereon comprising a resin composition comprising a resin and an inorganic laminar compound having an aspect ratio of not less than 50 and not more than 5000. As the gas barrier substance, a metal or oxide, ethylene-vinyl alcohol copolymer, or polyvinylidene chloride may preferably be used. Such a laminate, laminate film or shaped article may exhibit a good gas barrier property which is much higher than that of a conventional plastic material.
Inventors
- 👤 Kozo Kotani
- 👤 Toshio Kawakita
- 👤 Taiichi Sakaya
- 👤 Toshiya Kuroda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 02:34
CPC Classifications
C; C08; C08J; C08J7/00; C08J7/04; C08J7/048; B; B32; B32B; B32B15/00; B32B15/04; B32B15/08; B32B27/00; B32B27/06; B32B27/08; B32B27/18; B32B27/28; B32B27/30; B32B27/304; B32B27/306; B32B27/32; B32B27/34; B32B27/36; C08J7/042; C08J7/0423; C08J7/052; C08K; C08K3/00; C08K3/34; C08K3/346; B32B2307/00; B32B2307/50; B32B2307/514; B32B2307/518; B32B2307/70; B32B2307/724; B32B2307/7242; B32B2307/7244; C08K2201/00; C08K2201/008; C08K2201/016; Y; Y10; Y10S; Y10S428/00; Y10S428/91; Y10S428/913; Y10T; Y10T428/00; Y10T428/25; Y10T428/252; Y10T428/256; Y10T428/259
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
139 words
A laminate comprising: (a) a layer comprising a substance having a gas barrier property; and (b) at least one layer which is disposed on the layer (a) wherein said layer (b) comprises a resin composition comprising a resin and an inorganic laminar compound having an aspect ratio of not less than 50 and not more than 5000, said inorganic laminar compound being such that it is swollen or cleft in a solvent, said inorganic laminar compound being selected from the group consisting of a graphite, a phosphoric acid salt derivative compound, a chalcogen compound, a kaolinite series clay mineral, an antigorite series clay mineral, a smectite series clay mineral, and a mica series clay mineral, said resin comprising one selected from the group consisting of polyvinyl alcohol (PVA), ethylenevinylalcohol copolymer (EVOH), polyacrylonitrile (PAN), polysaccharide, polyacrylic acid, and esters thereof.
Claim 2
Dependent Claim
139 words
A laminate comprising: (a) a layer comprising a substance having a gas barrier property; and (b) at least one layer which is disposed on the layer (a) wherein said layer (b) comprises a resin composition comprising a resin and an inorganic laminar compound having an aspect ratio of not less than 50 and not more than 5000, said inorganic laminar compound being such that it is swollen or cleft in a solvent, said inorganic laminar compound being selected from the group consisting of a graphite, a phosphoric acid salt derivative compound, a chalcogen compound, a kaolinite series clay mineral, an antigorite series clay mineral, a smectite series clay mineral, and a mica series clay mineral, said resin comprising one selected from the group consisting of polyvinyl alcohol (PVA), ethylenevinylalcohol copolymer (EVOH), polyacrylonitrile (PAN), polysaccharide, polyacrylic acid, and esters thereof.
Claim 3
Dependent Claim
26 words
A laminate according to claim 1, wherein the layer (a) comprising the gas barrier substance is disposed on another resin layer underlying the layer (a) substance.
Claim 4
Dependent Claim
17 words
A laminate according to claim 1, wherein the gas barrier substance comprises a metal or metal oxide.
Claim 5
Dependent Claim
26 words
A laminate according to claim 1, wherein the layer comprising the gas barrier substance comprises a layer comprising an ethylene-vinyl alcohol copolymer as a main component.
Claim 6
Dependent Claim
25 words
A laminate according to claim 1, wherein the layer comprising the gas barrier substance comprises a layer comprising a polyvinylidene chloride as a main component.
Claim 7
Dependent Claim
25 words
A laminate according to claim 1, wherein the inorganic laminar compound is an inorganic laminar compound having a particle size of 5 μm or smaller.
Claim 8
Dependent Claim
19 words
A laminate according to claim 1, wherein the inorganic laminar compound comprises a clay mineral having a swelling property.
Claim 9
Dependent Claim
24 words
A laminate according to claim 1, wherein the inorganic laminar compound is an inorganic laminar compound having an aspect ratio of 200 to 3000.
Claim 10
Dependent Claim
32 words
A laminate according to claim 1, wherein the inorganic laminar compound and the resin constituting the resin composition have a volume ratio (inorganic laminar compound/resin) in the range of (5/95) to (90/10).
Claim 11
Dependent Claim
18 words
A laminate according to claim 1, wherein the resin constituting the resin composition is a highly hydrogen-bonding resin.
Claim 12
Dependent Claim
42 words
A laminate according to claim 10, wherein the highly hydrogen-bonding resin is a resin such that the wt. percent of a hydrogen-bonding group or ionic group per unit weight of the resin is not less than 30% and not more than 50%.
Claim 13
Dependent Claim
16 words
A laminate according to claim 10, wherein the highly hydrogen-bonding resin is polyvinyl alcohol or polysaccharide.
Claim 14
Dependent Claim
18 words
A laminate according to claim 10, wherein the resin composition further comprises a crosslinking agent for hydrogen-bonding group.
Claim 15
Dependent Claim
17 words
A laminate according to claim 13, wherein the crosslinking agent for hydrogen-bonding group is a zirconia compound.
Claim 16
Dependent Claim
28 words
A laminate according to claim 1, which has an oxygen permeability of not more than 0.2 cc/m 2 ·day·atm under the conditions of 30° C. and 60% RH.
Claim 17
Dependent Claim
17 words
A laminate according to claim 1, which has a shape in the form of a laminate film.
Claim 18
Dependent Claim
21 words
A laminate film, comprising: a base material, and at least one layer disposed thereon comprising a laminate according to claim 1.
Claim 19
Dependent Claim
29 words
A laminate film according to claim 17, which has an oxygen permeability of not more than 0.2 cc/m 2 ·day·atm under the conditions of 30° C. and 60% RH.
Claim 20
Dependent Claim
16 words
A shaped article, comprising a laminate according to claim 1 as at least a portion thereof.
Claim 21
Dependent Claim
29 words
A shaped article according to claim 19, which has an oxygen permeability of not more than 02 cc/m 2 ·day·atm under the conditions of 30° C. and 60% RH.
Claim 22
Dependent Claim
35 words
A laminate, comprising: at least one layer comprising a resin selected from biaxially oriented polypropylene, biaxially oriented nylon and biaxially oriented polyethylene terephthalate; and at least one layer comprising a laminate according to claim 1.
Claim 23
Dependent Claim
17 words
A laminate according to claim 21, which has a shape in the form of a laminate film.
Claim 24
Dependent Claim
33 words
A laminate according to claim 1, wherein the inorganic laminar compound is at least one selected from the group consisting of a graphite, a phosphoric acid salt derivative compound and a chalcogen compound.
Claim 25
Dependent Claim
46 words
A laminate according to claim 23, wherein the inorganic laminate compound is a chalcogen compound represented by the formula MX 2 , wherein M denotes an element selected from the group consisting of Group IV, Group V and Group VI, and X is S, Se, Te.
Claim 26
Dependent Claim
31 words
A laminate according to claim 24, wherein said chalcogen compound M is at least one member selected from the group consisting of Ti, Zr, Hf, V, Mb, Ta, Mo and W.
Claim 27
Dependent Claim
107 words
A laminate according to claim 1, wherein the inorganic laminar compound is at least one selected from the group consisting of a salt, a kaolinite series clay mineral, antigorite series clay mineral, smectite series clay mineral, and mica series clay minerals, said inorganic compound being at least one of (i) a clay having a two-layer structure, which comprises a silica tetrahedral layer, and an octahedral layer disposed thereon and comprising a central metal; or a three-layer structure, which comprises an octahedral layer comprising a central metal, and a silica tetrahedral layer disposed on the both sides of the octahedral layer so as to sandwich the octahedral layer.
Claim 28
Dependent Claim
40 words
A laminate according to claim 26, wherein the clay mineral comprises at least one selected from the group consisting of: kaolinite, dickite, nacrite, halloysite, antigorite, chrysotile, pyrophyllite, montmorillonite, hectorite, tetrasilylic mica, sodium taeniolite, muscovite, margarite, talc, phlogopite, xanthophyllite, and chlorite.
References Cited (Backward Citations)
US3499820A
Cited
US3668038A
Cited
US3914518A
Cited
US4102974A
Cited
US4376183A
Cited
JPS62148532A
Cited
US4983432A
Cited
US4818782A
Cited
JPH01313536A
Cited
JPH02158339A
Cited
JPH0330944A
Cited
US5246753A
Cited
JPH0393542A
Cited
US5378428A
Cited
US5164258A
Cited
US5244729A
Cited
US5221566A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-06-15 | 2001-12-15 | 2002-06-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-06-15 | 2005-12-15 | 2006-06-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-06-15 | 2009-12-15 | 2010-06-16 | $7700.00 | Window Closed / Lapsed |