US 12,305,015 B2
Biodegradable polymer expanded bead capable of being formed by steam compression molding
Zhiqiang Chen, Jiangsu (CN); Tian Xia, Jiangsu (CN); and Junfeng Chang, Jiangsu (CN)
Assigned to Useon Technology Limited, Jiangsu (CN)
Filed by Useon Technology Limited, Jiangsu (CN)
Filed on Oct. 14, 2024, as Appl. No. 18/914,379.
Application 18/914,379 is a continuation of application No. PCT/CN2023/084124, filed on Mar. 27, 2023.
Claims priority of application No. 202310205613.8 (CN), filed on Mar. 6, 2023.
Prior Publication US 2025/0034346 A1, Jan. 30, 2025
Int. Cl. C08J 9/18 (2006.01); C08J 3/22 (2006.01); C08J 9/00 (2006.01); C08J 9/12 (2006.01); C08J 9/232 (2006.01); C08L 67/02 (2006.01); C08L 67/04 (2006.01)
CPC C08J 9/18 (2013.01) [C08J 3/226 (2013.01); C08J 9/0061 (2013.01); C08J 9/122 (2013.01); C08J 9/232 (2013.01); C08L 67/02 (2013.01); C08L 67/04 (2013.01); C08J 2201/03 (2013.01); C08J 2203/08 (2013.01); C08J 2205/044 (2013.01); C08J 2367/02 (2013.01); C08J 2367/04 (2013.01); C08J 2425/14 (2013.01); C08J 2467/02 (2013.01); C08J 2467/04 (2013.01); C08L 2201/06 (2013.01); C08L 2203/14 (2013.01); C08L 2205/025 (2013.01); C08L 2205/03 (2013.01); C08L 2205/24 (2013.01); C08L 2310/00 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A biodegradable polymer expanded bead capable of being formed by steam compression molding, comprising the following components in parts by weight: 10-88 parts of poly (butylene succinate) (PBS), 10-88 parts of polylactic acid (PLA), 1-4 parts of a chain extender masterbatch, 1-3 parts of a nucleating agent masterbatch and 5-12 parts of a supercritical CO2 foaming agent; wherein a concentration of an optical isomer D-lactic acid monomer in a molecular chain of the PLA is 2-8%;
wherein a melt flow index of the PBS is 4-10 g/10 min.