US 12,240,938 B2
2,2-dimethyl-1,3-dioxolan-4-yl-methyl 2-bromo-2,2-difluoroacetate, waterborne polyurethane, and preparation methods thereof
Shengpeng Wang, Hangzhou (CN); Bajin Chen, Hangzhou (CN); Weiming Xu, Hangzhou (CN); Jinxing Song, Hangzhou (CN); Pengfei Zhang, Hangzhou (CN); Xiaojun Wang, Hangzhou (CN); Bencheng Yu, Hangzhou (CN); Youju Huang, Hangzhou (CN); and Xiaobo Yang, Hangzhou (CN)
Assigned to Hangzhou Transfar Fine Chemical Co., Ltd., Hangzhou (CN); and Hangzhou Normal University, Hangzhou (CN)
Filed by Hangzhou Transfar Fine Chemical Co., Ltd., Hangzhou (CN); and Hangzhou Normal University, Hangzhou (CN)
Filed on Dec. 30, 2021, as Appl. No. 17/565,755.
Claims priority of application No. 202111009687.1 (CN), filed on Aug. 31, 2021.
Prior Publication US 2023/0103217 A1, Mar. 30, 2023
Int. Cl. C08G 18/38 (2006.01); C07D 317/22 (2006.01); C08G 18/08 (2006.01); C08G 18/10 (2006.01); C08G 18/22 (2006.01); C08G 18/32 (2006.01); C08G 18/66 (2006.01); C08G 18/76 (2006.01); B01J 23/04 (2006.01); B01J 31/02 (2006.01); B01J 31/04 (2006.01); B01J 31/12 (2006.01); C07D 317/24 (2006.01)
CPC C08G 18/3812 (2013.01) [C07D 317/22 (2013.01); C08G 18/0823 (2013.01); C08G 18/10 (2013.01); C08G 18/222 (2013.01); C08G 18/3206 (2013.01); C08G 18/3802 (2013.01); C08G 18/381 (2013.01); C08G 18/6692 (2013.01); C08G 18/7621 (2013.01); B01J 23/04 (2013.01); B01J 31/0201 (2013.01); B01J 31/04 (2013.01); B01J 31/121 (2013.01); B01J 2531/12 (2013.01); B01J 2531/13 (2013.01); C07D 317/24 (2013.01)] 2 Claims
OG exemplary drawing
 
1. A waterborne polyurethane, which is prepared from raw materials comprising, in parts by mass:
15-40 parts of a polyisocyanate monomer, 45-65 parts of a polymer polyol, 5-25 parts of a fluorine-containing modified monomer, a solid Lewis acid catalyst, 0.5-8 parts of a small-molecule chain extender, 3-10 parts of an ionic hydrophilic chain extender, more than 0 and not more than 12 parts of an ionic neutralizer, and water,
wherein a mass ratio of the fluorine-containing modified monomer to the solid Lewis acid catalyst is in a range of 1:0.005-0.05; and
the fluorine-containing modified monomer has a structure of Formula I:

OG Complex Work Unit Chemistry