Patent US4560609A successfully refreshed from Google Patents.
US4560609A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plastic film
Assignee: Sumitomo Chemical Co Ltd
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Filing: 1985-06-25
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Granted: 1985-12-24
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Expires: 2005-06-25
Abstract
Abstract An infrared radiation absorbing film suitable for agricultural purposes comprising a first layer of olefin resin containing an amorphous hydrated aluminosilicate gel and optionally, additional layers of an olefin resin encompassing said first layer.
Inventors
- 👤 Nobuo Fukushima
- 👤 Shuji Kitamura
- 👤 Kiyohiko Nakae
- 👤 Kozo Kotani
- 👤 Takayuki Terazawa
- 👤 Toyoaki Nakarai
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:21
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/18; C; C08; C08L; C08L23/00; C08L23/02; A; A01; A01G; A01G9/00; A01G9/14; A01G9/1438; B32B27/30; B32B27/306; B32B27/32; B32B5/00; B32B5/16; C08K; C08K3/00; C08K3/34; B32B2323/00; B32B2323/04; B32B2323/046; Y; Y02; Y02A; Y02A40/00; Y02A40/10; Y02A40/25; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31855; Y10T428/31909; Y10T428/31913
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
67 words
An infrared radiation absorbing film composed of 100 weight parts of an olefin resin (A) and 2 to 25 weight parts of an amorphous hydrated aluminosilicate gel (B), wherein the ratio of the refractive index n A of the olefin resin to the refractive index n B of the amorphous hydrated aluminosilicate gel, (n A /n B ), is within the range of from 0.99 to 1.02.
Claim 2
Dependent Claim
67 words
An infrared radiation absorbing film composed of 100 weight parts of an olefin resin (A) and 2 to 25 weight parts of an amorphous hydrated aluminosilicate gel (B), wherein the ratio of the refractive index n A of the olefin resin to the refractive index n B of the amorphous hydrated aluminosilicate gel, (n A /n B ), is within the range of from 0.99 to 1.02.
Claim 3
Dependent Claim
39 words
The infrared radiation absorbing film as claimed in claim 1, wherein the amorphous hydrated aluminosilicate gel has the following composition: (SiO.sub.2).sub.x.(Al.sub.2 O.sub.3).sub.y.(M.sub.2 O).sub.[x]z.nH.sub.2 O wherein M represents an alkali-metal, 0.14≦y/x≦0.33, 0.2≦z/y≦1.6, and n is zero or a positive number.
Claim 4
Dependent Claim
57 words
The infrared radiation absorbing film as claimed in claim 1, wherein the amorphous hydrated gel has a molar ratio Al 2 O 3 /SiO 2 of from 0.15 to 0.3, a molar ratio Na 2 O/Al 2 O 3 of from 0.3 to 0.8 and an ignition loss of from 4 weight % to 15 weight %.
Claim 5
Dependent Claim
85 words
The infrared radiation absorbing film as claimed in claim 1, wherein the amorphous hydrated aluminosilicate gel has a molar ratio Al 2 O 3 /SiO 2 of from 0.15 to 0.3, a molar ratio Na 2 O/Al 2 O 3 of from 0.3 to 0.8 and an ignition loss of from 4 weight % to 15 weight %, and of which the equilibrium adsorbed water content measured at a temperature of 25° C. under a relative humidity of 65% is more than 5 weight %.
Claim 6
Dependent Claim
39 words
The infrared radiation absorbing film as claimed in claim 1, characterized in that the olefin resin (A) is a low density polyethylene having a density of from 0.915 g/cm 3 to 0.935 g/cm 3 , or an ethylene/α-olefin copolymer.
Claim 7
Dependent Claim
22 words
The infrared radiation absorbing film as claimed in claim 1, characterized in that the olefin resin (A) is an ethylene/vinyl acetate copolymer.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-12-23 | 1989-06-24 | 1989-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-12-23 | 1993-06-24 | 1993-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-12-23 | 1997-06-24 | 1997-12-24 | $7700.00 | Window Closed / Lapsed |