	US 11,965,055 B2
	Waterborne polyurethane acrylate emulsion and application thereof
Bo Lv, Zhejiang (CN); Yuping Wang, Zhejiang (CN); Ligang Yu, Zhejiang (CN); and Fuliang Peng, Zhejiang (CN)
Assigned to Zhejiang UVCHEM Special Coatings Co., Ltd, Zhejiang (CN)
Appl. No. 18/272,120
Filed by Zhejiang UVCHEM Special Coatings Co., Ltd, Zhejiang (CN)
PCT Filed Dec. 24, 2021, PCT No. PCT/CN2021/141098 § 371(c)(1), (2) Date Jul. 13, 2023, PCT Pub. No. WO2022/151949, PCT Pub. Date Jul. 21, 2022.
Claims priority of application No. 202110040384.X (CN), filed on Jan. 13, 2021; and application No. 202111341921.0 (CN), filed on Nov. 12, 2021.
Prior Publication US 2024/0067768 A1, Feb. 29, 2024
Int. Cl. C08G 18/12 (2006.01); C08F 2/46 (2006.01); C08F 222/10 (2006.01); C08G 18/22 (2006.01); C08G 18/44 (2006.01); C08G 18/48 (2006.01); C09D 4/06 (2006.01); C09D 5/02 (2006.01); C09D 175/14 (2006.01)

CPC C08G 18/12 (2013.01) [C08F 2/46 (2013.01); C08F 222/103 (2020.02); C08F 222/105 (2020.02); C08F 222/1065 (2020.02); C08G 18/227 (2013.01); C08G 18/44 (2013.01); C08G 18/4833 (2013.01); C09D 4/06 (2013.01); C09D 5/022 (2013.01); C09D 175/14 (2013.01)]

7 Claims

1. A waterborne polyurethane acrylate emulsion, characterized by comprising the following raw material components in parts by weight:

polyurethane acrylate prepolymer 20˜80

polyurethane acrylate oligomer 5˜30

first UV-curable monomer 0˜50

water 50˜70;

preparation of the waterborne polyurethane acrylate emulsion:

mixing a diol oligomer and a polyisocyanate so that they react to obtain a nonionic polyurethane;

reacting the nonionic polyurethane with a second UV-curable monomer to obtain the polyurethane acrylate prepolymer having hydrophilicity;

mixing the polyurethane acrylate prepolymer, polyurethane acrylate oligomer, and the first UV-curable monomer and dispersing them in water to obtain a waterborne polyurethane acrylate emulsion.