EP0450777A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Biodegradable plastics composition
Assignee: National Institute of Advanced Industrial Science and Technology
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Filing: 1991-03-14
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Granted: —
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Expires: 2011-03-14
Abstract
Abstract A biodegradable plastic composition for use in production of shaped articles includes polyglycolide and a high molecular weight substance selected from poly(3-hydroxybutyric acid), a copolymer of 3-hydroxybutyric acid and 3-hydroxyvaleric acid, polycaprolactone, polyglutamic acid, polyolefin, polyvinyl alcohol, polyalkylene oxide, cellulose acetate and mixtures thereof, the amount of the polyglycolide being 5-60 % based on the total weight of the polyglycolide and the high molecular weight substance.
Inventors
- 👤 Takashi Masuda
- 👤 Kazuhisa Murata
- 👤 Akio Matsuda
- 👤 Shinsuke Yamazaki
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-23 05:04
CPC Classifications
C; C08; C08L; C08L67/00; C08L67/04; C08L101/00; C08L2201/00; C08L2201/06
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
65 words
A biodegradable plastic composition comprising polyglycolide and a high molecular weight substance selected from the group consisting of poly(3-hydroxybutyric acid), a copolymer of 3-hydroxybutyric acid and 3-hydroxyvaleric acid, polycaprolactone, polyglutamic acid, polyolefin, polyvinyl alcohol, polyalkylene oxide, cellulose acetate and mixtures thereof, said polyglycolide being present in an amount of 5-60 % based on the total weight of said polyglycolide and said high molecular weight substance.
Claim 2
Dependent Claim
20 words
The composition as claimed in claim 1, wherein said polyglycolide has a number average molecular weight of at least 500.
Claim 3
Dependent Claim
18 words
The composition as claimed in claim 1, wherein said polyglycolide has a number average molecular weight of 800-200,000.
Claim 4
Dependent Claim
40 words
A shaped article obtained by a method comprising the steps of providing a biodegradable plastic composition according to claim 1, heating said composition to a temperature sufficient to melt said composition, and molding said melted composition into a desired shape.
References Cited (Backward Citations)
No citation records indexed.
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