Title:
RESIN COMPOSITION FOR INJECTION MOLDING, AND INJECTION-MOLDED BODY
Document Type and Number:
WIPO Patent Application WO/2022/065181
Kind Code:
A1
Abstract:
This resin composition for injection molding contains a poly(3-hydroxyalkanoate)-based resin. The poly(3-hydroxyalkanoate)-based resin includes at least one copolymer of a 3-hydroxybutyrate unit and another hydroxyalkanoate unit. The average content ratio of the 3-hydroxybutyrate unit in the poly(3-hydroxyalkanoate)-based resin is 92-99 mol%. The weight-average molecular weight of the poly(3-hydroxyalkanoate)-based resin in terms of polystyrene, as measured by gel permeation chromatography using a chloroform solvent, is 210,000-380,000, and the proportion of a component having a weight molecular weight of at most 200,000 in the weight molecular weight distribution is 35-60 wt%.
Inventors:
MATSUOKA YOSHIAKI
Application Number:
PCT/JP2021/034056
Publication Date:
March 31, 2022
Filing Date:
September 16, 2021
Export Citation:
Assignee:
KANEKA CORP (JP)
International Classes:
B29C45/00; C08K3/013; C08L67/04; C08L101/16
Domestic Patent References:
| WO2017122679A1 | 2017-07-20 |
Foreign References:
| JP2008303286A | 2008-12-18 | |||
| JP2008189861A | 2008-08-21 |
Attorney, Agent or Firm:
ARCO PATENT & TRADEMARK ATTORNEYS (JP)
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