US 12,202,947 B2
Germ-repellent plastic, a manufacturing method therefor, and a germ-repellent plastic item made therefrom
Wenjun Meng, Hong Kong (HK); Sau Kuen Connie Kwok, Hong Kong (HK); Yueying Chen, Hong Kong (HK); and Mingyu Zhang, Hong Kong (HK)
Assigned to Nano and Advanced Materials Institute Limited, Hong Kong (HK)
Appl. No. 17/042,239
Filed by NANO AND ADVANCED MATERIALS INSTITUTE LIMITED, Hong Kong (HK)
PCT Filed Apr. 9, 2018, PCT No. PCT/CN2018/082329
§ 371(c)(1), (2) Date Sep. 28, 2020,
PCT Pub. No. WO2019/195982, PCT Pub. Date Oct. 17, 2019.
Prior Publication US 2021/0115200 A1, Apr. 22, 2021
Int. Cl. C08J 3/22 (2006.01); C08K 5/00 (2006.01); C08K 5/103 (2006.01); C08L 55/02 (2006.01)
CPC C08J 3/226 (2013.01) [C08K 5/0058 (2013.01); C08K 5/103 (2013.01); C08L 55/02 (2013.01); C08J 2433/02 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A germ-repellent plastic comprising:
an anti-biofouling compound selected from the group consisting of poly (ethylene glycol) sorbitan monolaurate, poly (ethylene glycol) sorbitan monooleate, poly (ethylene glycol) sorbitol hexaoleate, ceteareth, and a combination thereof; and
a basic plastic selected from the group consisting of polypropylene (PP), high-density polyethylene (HDPE), ethyl vinyl acetate (EVA), and a combination thereof; and
an intermediate plastic having a polymer backbone that is different from the basic plastic, the intermediate plastic is comingled with the anti-biofouling compound to form a masterbatch, which is further comingled with the basic plastic to form the germ-repellent plastic, so as to enhance the association between the anti-biofouling compound and the basic plastic, thereby reducing the chances of the anti-biofouling compound leaching from the basic plastic;
wherein the intermediate plastic is a random terpolymer having a polymer backbone comprising ethylene monomers, acrylic ester monomers, and maleic anhydride monomers.