US 12,173,135 B2
Plasticizer and plastic product
Wei-Yuan Chen, Taichung (TW); Tzu-Rong Lu, Taichung (TW); Yi-Ling Chen, Taichung (TW); and Chun-Hung Teng, Taichung (TW)
Assigned to LARGAN MEDICAL CO., LTD., Taichung (TW)
Filed by LARGAN MEDICAL CO., LTD., Taichung (TW)
Filed on Nov. 24, 2020, as Appl. No. 17/102,617.
Claims priority of provisional application 62/939,733, filed on Nov. 25, 2019.
Prior Publication US 2021/0155771 A1, May 27, 2021
Int. Cl. C08K 5/20 (2006.01); C08K 5/00 (2006.01); C08K 5/06 (2006.01); C08K 5/101 (2006.01); C08K 5/17 (2006.01); C08L 33/06 (2006.01)
CPC C08K 5/0016 (2013.01) [C08K 5/175 (2013.01); C08L 33/06 (2013.01)] 11 Claims
 
1. A plasticizer, which is biodegradable, a molecule of the plasticizer comprising:
a central structure comprising at least one amino acid; and
at least two side-chain structures, wherein each of the at least two side-chain structures is a chain of multiple carbon atoms, an amide bond is formed as one of the at least two side-chain structures connected to an amine group of the at least one amino acid, and an ester bond is formed as another one of the at least two side-chain structures connected to an a carboxyl group of the at least one amino acid;
wherein a number of carbon atoms of the side-chain structure which is connected to the amine group is nNC, a number of carbon atoms of the side-chain structure which is connected to the carboxyl group is nOC, and the following condition is satisfied:
0.01≤nNC/(nNC+nOC)<1.00;
wherein nNC is positive integer and nOC is positive integer.