	US 12,227,610 B2
	Aqueous dispersion comprising polyurethane or polyurethane-urea, preparation method therefor and use thereof
Zefeng Song, Shandong (CN); Yongjian Sun, Shandong (CN); Xueshun Ji, Shandong (CN); Huiliang Li, Shandong (CN); Yancheng Zhang, Shandong (CN); and Yuanyong Wang, Shandong (CN)
Assigned to WANHUA CHEMICAL GROUP CO., LTD., Shandong (CN); WANHUA CHEMICAL (NINGBO) CO., LTD., Zhejiang (CN); and WANHUA CHEMICAL (GUANGDONG) CO., LTD., Guangdong (CN)
Appl. No. 17/772,055
Filed by WANHUA CHEMICAL GROUP CO., LTD., Shandong (CN); WANHUA CHEMICAL (NINGBO) CO., LTD., Zhejiang (CN); and WANHUA CHEMICAL (GUANGDONG) CO., LTD., Guangdong (CN)
PCT Filed Nov. 5, 2019, PCT No. PCT/CN2019/115783 § 371(c)(1), (2) Date Apr. 26, 2022, PCT Pub. No. WO2021/087769, PCT Pub. Date May 14, 2021.
Prior Publication US 2022/0363804 A1, Nov. 17, 2022
Int. Cl. C08G 18/32 (2006.01); C08G 18/10 (2006.01); C08G 18/71 (2006.01); C08G 18/73 (2006.01); C08L 75/06 (2006.01); C09D 175/06 (2006.01); C09J 175/06 (2006.01)

CPC C08G 18/3221 (2013.01) [C08G 18/10 (2013.01); C08G 18/714 (2013.01); C08G 18/73 (2013.01); C08L 75/06 (2013.01); C09D 175/06 (2013.01); C09J 175/06 (2013.01)]

10 Claims

1. A hydrolysis-resistant aqueous dispersion comprising polyurethane or polyurethane-urea, wherein the polyurethane or polyurethane-urea comprised in the aqueous dispersion is prepared by reacting raw materials comprising the following components:

(a) a compound having a tertiary amine group and at least one NCO reactive functional group,

(b) a polyester polyol having a number average molecular weight of 400 to 5000 and a functionality of 2 to 3,

(d) a hydrophilic compound having one or more of an ionic group, a potential ionic group and a non-ionic group and having 2 to 3 NCO reactive functional groups,

(e) a mono-functional non-ionic hydrophilic compound having at least one NCO reactive functional group,

(f) optionally, a compound having 1 to 3 NCO reactive functional groups, and

(g) optionally, a blocking agent in the field of isocyanates or an unsaturated compound having a polymerization reactive group;

wherein based on the total weight of components,

the amount of the component (b) is 70 wt % to 90 wt %;

wherein the polyurethane or polyurethane-urea comprises a structural unit as shown in Formula (I):

wherein R is selected from a residue of the component (a) after the NCO reactive functional group is removed.