Title:
POLYHYDROXYALKANOATE MOLDED BODY AND PREPARATION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2024/007494
Kind Code:
A1
Abstract:
The present invention relates to the technical field of high molecular materials, in particular to a polyhydroxyalkanoate molded body and a preparation method therefor. The preparation method comprises: mixing polyhydroxyalkanoate raw materials, processing same at a first temperature, and drawing same at a second temperature, wherein the first temperature is 10-60°C higher than the melting point of a polyhydroxyalkanoate resin; the second temperature is higher than the glass transition temperature of a hydroxyalkanoate resin and lower than the melting point of the polyhydroxyalkanoate resin; and during the preparation process, under the condition of the second temperature, the following conditions need to be met: the draw ratio is 1.0 time or more, and the heating time at the temperature T is 30 s or more; or, the draw ratio is 3.0 times or more, and the heating time at the temperature T is 10 s or more. In the present invention, by optimizing the processing technology, a non-sticky molded body can be prepared; and the preparation method is simple and controllable, and can improve the processing and production efficiency.
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| WO/2005/105434 | FLUOROPOLYMER BARRIER MATERIAL |
Inventors:
WANG RUXU (CN)
MA YIMING (CN)
LI TENG (CN)
ZHANG HAOQIAN (CN)
MA YIMING (CN)
LI TENG (CN)
ZHANG HAOQIAN (CN)
Application Number:
PCT/CN2022/129264
Publication Date:
January 11, 2024
Filing Date:
November 02, 2022
Export Citation:
Assignee:
BEIJING BLUEPHA MICROBIOLOGY TECH CO LTD (CN)
JIANGSU LANSU BIOMATERIAL CO LTD (CN)
JIANGSU LANSU BIOMATERIAL CO LTD (CN)
International Classes:
B29C55/00; C08K5/20; C08L67/04
Foreign References:
| CN114851528A | 2022-08-05 | |||
| CN103443339A | 2013-12-11 | |||
| JP2006168159A | 2006-06-29 | |||
| JP2003328230A | 2003-11-19 | |||
| CN101027352A | 2007-08-29 | |||
| CN109825892A | 2019-05-31 | |||
| CN113185822A | 2021-07-30 | |||
| CN113573869A | 2021-10-29 | |||
| CN113631657A | 2021-11-09 | |||
| JP2003311825A | 2003-11-06 |
Attorney, Agent or Firm:
CN-KNOWHOW INTELLECTUAL PROPERTY AGENT LIMITED (CN)
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