	US 12,227,671 B2
	Polypyrrole-graphene/polyurethane antifouling coating as well as preparation method and application thereof
Jun Wang, Harbin (CN); Jiawei Tang, Harbin (CN); Rongrong Chen, Harbin (CN); Qi Liu, Harbin (CN); Jingyuan Liu, Harbin (CN); Jing Yu, Harbin (CN); Jiahui Zhu, Harbin (CN); Gaohui Sun, Harbin (CN); and Peili Liu, Harbin (CN)
Assigned to Harbin Engineering University, Harbin (CN)
Filed by Harbin Engineering University, Harbin (CN)
Filed on Sep. 23, 2022, as Appl. No. 17/951,125.
Claims priority of application No. 202111248332.8 (CN), filed on Oct. 26, 2021.
Prior Publication US 2023/0126942 A1, Apr. 27, 2023
Int. Cl. C09D 175/04 (2006.01); C09D 5/16 (2006.01)

CPC C09D 5/1618 (2013.01) [C09D 5/1662 (2013.01); C09D 175/04 (2013.01)]

14 Claims

1. A polypyrrole-graphene/polyurethane antifouling coating, comprising a first component and a second component, wherein the first component comprises the following raw materials in parts by weight:

500 parts of a group-hydrolyzable polyurethane prepolymer, 25 parts-50 parts of bentonite, 25 parts-50 parts of titanium dioxide, 60 parts-120 parts of zinc oxide, 15 parts-30 parts of a talcum powder, and 15 parts-30 parts of a polypyrrole-graphene nanofiller, wherein the group-hydrolyzable polyurethane prepolymer is grafted with pyridine-triphenylborane; and

the second component comprises the following raw materials in parts by weight:

5 parts-7 parts of a leveling agent, 5 parts-7 parts of a defoamer, 6 parts-15 parts of a chain extender, 10 parts-25 parts of a silane coupling agent, and 1 part-2 parts of a catalyst.