US5158810A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Melt-molded articles and laminates derived therefrom, and their use
Assignee: Mitsubishi Chemical Corp
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Filing: 1991-09-04
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Granted: 1992-10-27
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Expires: 2011-09-04
Abstract
Abstract A melt-molded article such as water soluble fibers, a laminate and a container for waste matter, the article having biodegradability. The melt molded article is produced by melt-molding a composition comprising an oxyalkylene group-containing vinyl alcohol copolymer and starch or a starch-derived macromolecular substance.
Inventors
- 👤 Tsukasa Oishi
- 👤 Masaru Saeki
- 👤 Munetoshi Tomita
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:28
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/30; B32B27/306; B32B27/06; B32B27/08; C; C08; C08J; C08J5/00; C08J5/18; C08L; C08L29/00; C08L29/10; C08L3/00; C08L3/02; C08L3/04; C08L3/10; D; D01; D01F; D01F6/00; D01F6/28; D01F6/34; B32B2307/00; B32B2307/70; B32B2307/716; B32B2307/7163; B32B2439/00; C08J2303/00; C08J2303/02; C08J2329/00; C08J2329/02; C08J2329/04; Y; Y10; Y10T; Y10T428/00; Y10T428/13; Y10T428/1303; Y10T428/1307; Y10T428/1334; Y10T428/1341; Y10T428/1352; Y10T428/1362; Y10T428/24; Y10T428/24058; Y10T428/24124; Y10T428/29; Y10T428/2904; Y10T428/2913; Y10T428/2929; Y10T428/31504; Y10T428/31511; Y10T428/31855; Y10T428/31909; Y10T428/31971
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
22 words
A melt-molded article produced by melt-molding a composition comprising an oxyalkylene group-containing vinyl alcohol copolymer and starch or a starch-derived macromolecular substance.
Claim 2
Dependent Claim
22 words
A melt-molded article produced by melt-molding a composition comprising an oxyalkylene group-containing vinyl alcohol copolymer and starch or a starch-derived macromolecular substance.
Claim 3
Dependent Claim
27 words
The melt molded article as claimed in claim 1, wherein the oxyalkylene unit content in said oxyalkylene group-containing vinyl alcohol copolymer is 3 to 40% by weight.
Claim 4
Dependent Claim
31 words
The melt molded article as claimed in claim 1, wherein the weight proportions of the oxyalkylene group-containing vinyl alcohol copolymer and the starch or starch-derived macromolecular substance are 90:10 to 10:0.
Claim 5
Dependent Claim
21 words
The melt molded article as claimed in claim 1, wherein the wherein the melt-molding is conducted under plasticizer-free and anhydrous conditions.
Claim 6
Dependent Claim
19 words
The melt molded article as claimed in claim 1, wherein said article is in the form of a fiber.
Claim 7
Dependent Claim
19 words
The melt molded article as claimed in claim 1, wherein said article is in the form of a film.
Claim 8
Dependent Claim
13 words
A laminate wherein at least one layer is the film of claim 6.
Claim 9
Dependent Claim
15 words
A container for filthy waster matter which is made of the laminate of claim 7.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-10-27 | 1996-04-27 | 1996-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-10-27 | 2000-04-27 | 2000-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-10-27 | 2004-04-27 | 2004-10-27 | $7700.00 | Window Closed / Lapsed |