Title:
CRYSTAL NUCLEATING AGENTS FOR POLYHYDROXYALKANOATES
Document Type and Number:
Japanese Patent JP2021063234
Kind Code:
A
Abstract:
To provide compositions for increasing the crystallization rate and/or processing speed of polyhydroxyalkanoate (PHA) polymers.SOLUTION: A polymeric composition comprises: a polymer including at least 20 mol% of hydroxyalkanoate repeat units and having a glass transition temperature from about -30°C to about 10°C; and a nucleating agent in an amount from 0.01 wt.% to 20 wt.% of the polymer. The present invention employs, as excellent crystal nucleating agents for PHA, compounds that have similar crystal structures to PHA and have a melting point higher than that of the PHA, such as pentaerythritol, as well as compounds that undergo a crystal structure change at or below the melting point of the polymer, such as sulfur or selenium.SELECTED DRAWING: None
More Like This:
| WO/2007/088930 | HEAT SHIELD SHEET |
| JP2008214568 | RESIN MOLDED ARTICLE |
| WO/2013/157738 | POLYALKYLENE CARBONATE AND POLYOLEFINE-BASED MIXED COMPOSITION |
Inventors:
RACHELLE ARNOLD
ADAM JOHNSON
ADAM JOHNSON
Application Number:
JP2021004659A
Publication Date:
April 22, 2021
Filing Date:
January 15, 2021
Export Citation:
Assignee:
MEREDIAN BIOPLASTICS INC
International Classes:
C08L67/04; C08K3/06; C08K3/22; C08K3/30; C08K3/32; C08K5/053; C08K5/20
Domestic Patent References:
| JPH08505415A | 1996-06-11 | |||
| JP2003105181A | 2003-04-09 |
Foreign References:
| WO2014020838A1 | 2014-02-06 | |||
| WO2012133231A1 | 2012-10-04 | |||
| WO2015052876A1 | 2015-04-16 | |||
| WO2014188646A1 | 2014-11-27 |
Attorney, Agent or Firm:
Patent business corporation Odashima patent office