US 12,473,407 B2
Anti-fouling polyurethane thin film with high elasticity and high transparency, preparation method and use thereof
Xu Wu, Guangdong (CN); Minhuan Liu, Guangdong (CN); Zhengping Wang, Guangdong (CN); Xiubin Xu, Guangdong (CN); Danfeng Yu, Guangdong (CN); and Taoyan Mao, Guangdong (CN)
Assigned to Guangzhou University, Guangzhou (CN)
Filed by Guangzhou University, Guangdong (CN)
Filed on Jan. 10, 2022, as Appl. No. 17/571,791.
Application 17/571,791 is a continuation of application No. PCT/CN2020/102914, filed on Jul. 20, 2020.
Claims priority of application No. 201910655864.X (CN), filed on Jul. 19, 2019.
Prior Publication US 2022/0127428 A1, Apr. 28, 2022
Int. Cl. C08J 5/18 (2006.01); C08G 18/12 (2006.01); C08G 18/24 (2006.01); C08G 18/28 (2006.01); C08G 18/32 (2006.01); C08G 18/34 (2006.01); C08G 18/48 (2006.01); C08G 18/66 (2006.01); C08G 18/75 (2006.01)
CPC C08J 5/18 (2013.01) [C08G 18/12 (2013.01); C08G 18/242 (2013.01); C08G 18/2885 (2013.01); C08G 18/3206 (2013.01); C08G 18/348 (2013.01); C08G 18/4854 (2013.01); C08G 18/6677 (2013.01); C08G 18/6692 (2013.01); C08G 18/755 (2013.01); C08J 2375/08 (2013.01)] 7 Claims
 
1. An anti-fouling polyurethane film, characterized in that it has raw materials comprising the following active ingredients by mass fractions:
 
 
 
 a hard segment monomer 30% to 40%;
 
 a soft segment monomer 40% to 50%;
 
 a hydrophilic monomer 3% to 6%;
 
 a crosslinking monomer 0% to 3%;
 
 a small molecular chain extender 0% to 5%; and
 
 a compound with low surface energy 10% to 15%,
 
 
wherein the mass fraction refers to the mass fraction of each active ingredient in the total active ingredients;
the first segment monomer is at least one of toluene-2,4-diisocyanate, diphenylmethane diisocyanate, hexamethylene diisocyanate, dicyclohexylmethane diisocyanate, 1,4-cyclohexane diisocyanate or isophorone diisocyanate;
the second segment monomer is at least one of polyester glycol or polyether glycol;
the hydrophilic monomer is at least one of sodium 1,4-butanediol-2-sulfonate, sodium 1,2-propanediol-3-sulfonate, sodium ethylenediaminoethanesulfonate, 2,4-diaminobenzenesulfonic acid, dimethylolpropionic acid or dimethylolbutyric acid;
the crosslinking monomer is at least one of glycerol, triisopropanolamine, pentaerythritol, or trimethylolpropane;
the molecule chain extender is at least one of 1,4-butanediol, ethylene glycol, diethylene glycol, or ethylenediamine; and
the surface energy compound is a monohydroxyalkyl organic fluorine.