Title:
BIODEGRADABLE RESIN AND FILM PREPARED THEREBY
Document Type and Number:
WIPO Patent Application WO/2021/185339
Kind Code:
A1
Abstract:
Provided is a biodegradable resin, having an intrinsic viscosity of 1.0 dL/g or more and having a loss ratio of intrinsic viscosity of 10% or more after being processed at 70℃ and 85% of RH for 6 hr. Also provided is a biodegradable resin, containing a polylactic acid of 70 wt% or more and having a relative biodegradation rate up to 90% or more within 12 months when performing degradability evaluation by home composting at 28℃ according to conditions specified in ASTM D5338-15. The biodegradable resin has the characteristics of high biodegradation speed and storage stability, is excellent in mechanical property, optical property, and barrier property, is applicable to multiple aspects such as packaging and express transportation, and can be rapidly degraded into micromolecules such as carbon dioxide and water at the end of the service life without polluting the environment. Also provided are a biodegradable resin film using the biodegradable resin and a product thereof, as well as a multilayer film containing the biodegradable resin film and a product thereof.
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Inventors:
GUI ZONGYAN (CN)
WANG RUXU (CN)
WANG KE (CN)
ARAI TAKASHI (CN)
MANABE ISAO (CN)
WANG RUXU (CN)
WANG KE (CN)
ARAI TAKASHI (CN)
MANABE ISAO (CN)
Application Number:
PCT/CN2021/081672
Publication Date:
September 23, 2021
Filing Date:
March 19, 2021
Export Citation:
Assignee:
TORAY ADVANCED MATERIALS RES LABORATORIES CHINA CO LTD (CN)
International Classes:
C08L67/04; B65D65/46; C08J5/18; C08K5/09; C08K5/092
Domestic Patent References:
| WO2013184822A1 | 2013-12-12 | |||
| WO2004101683A1 | 2004-11-25 |
Foreign References:
| CN101372550A | 2009-02-25 | |||
| CN109897352A | 2019-06-18 | |||
| CN105602215A | 2016-05-25 | |||
| CN110591309A | 2019-12-20 | |||
| CN110540741A | 2019-12-06 |
Attorney, Agent or Firm:
KING & WOOD MALLESONS (CN)
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