US 11,964,032 B2
Aqueous polyurethane functional mask substrate and application thereof
Xiaoxiao Ji, Shandong (CN); Haidong Jia, Shandong (CN); Nuo Xu, Shandong (CN); Shan Liu, Shandong (CN); Yunling Liu, Shandong (CN); Jie Zhang, Shandong (CN); Xueshun Ji, Shandong (CN); and Jiakuan Sun, Shandong (CN)
Assigned to WANHUA CHEMICAL GROUP CO., LTD., Shandong (CN); and WANHUA CHEMICAL (NINGBO) CO., LTD., Zhejiang (CN)
Appl. No. 17/278,533
Filed by WANHUA CHEMICAL GROUP CO., LTD., Shandong (CN); and WANHUA CHEMICAL (NINGBO) CO., LTD., Zhejiang (CN)
PCT Filed Nov. 9, 2018, PCT No. PCT/CN2018/114894
§ 371(c)(1), (2) Date Mar. 22, 2021,
PCT Pub. No. WO2020/093393, PCT Pub. Date May 14, 2020.
Claims priority of application No. 201811311556.7 (CN), filed on Nov. 6, 2018.
Prior Publication US 2021/0353510 A1, Nov. 18, 2021
Int. Cl. A61K 8/02 (2006.01); A61K 8/87 (2006.01); C08G 18/10 (2006.01); C08G 18/32 (2006.01); C08G 18/42 (2006.01); C08G 18/75 (2006.01); C08L 75/06 (2006.01)
CPC A61K 8/0212 (2013.01) [A61K 8/87 (2013.01); C08G 18/10 (2013.01); C08G 18/3225 (2013.01); C08G 18/4238 (2013.01); C08G 18/758 (2013.01); C08L 75/06 (2013.01); A61K 2800/48 (2013.01); A61K 2800/524 (2013.01); A61K 2800/594 (2013.01)] 18 Claims
 
1. A mask substrate composition, comprising, by total mass of the mask substrate composition, the following components: (a) 5-90 wt % of an aqueous polyurethane dispersion; and (b) 10-95 wt % of an aqueous polyurethane dispersion; wherein the aqueous polyurethane dispersion (a) is prepared by reaction of reaction raw materials comprising
a1) polyisocyanate, (a2) polyester polyol, (a3) a low-molecular weight diol chain extender, (a4) a polyamine chain extender, (a5) a polyamine chain extender and (a6) a small-molecule monoamino end-capping agent; wherein the aqueous polyurethane dispersion (a) is prepared by reaction of the raw materials of the following mass percentages based on the mass of polyurethane:
(a1) polyisocyanate 15-25 wt %;
(a2) polyester polyol 65-80 wt %;
(a3) a low-molecular weight diol chain extender 0.1-3 wt %;
(a4) a polyamine chain extender (a) 0.01-3 wt %;
(a5) a polyamine chain extender (b) 1-8 wt %; and
(a6) a small-molecule monoamino end-capping agent 0.1-2 wt %;
(b) the aqueous polyurethane dispersion (b) is prepared by reaction of reaction raw materials comprising (b1) polyisocyanate, (b2) polyester polyol, (b3) polyethylene glycol monomethyl ether, (b6) a polyhydroxyl chain extender, (b4) a polyamine chain extender and (b5) a polyamine chain extender; wherein the (b) aqueous polyurethane dispersion (b) is prepared by reaction of the raw materials of the following mass percentages based on the mass of polyurethane:
(b1) polyisocyanate 14-35 wt %;
(b2) polyester polyol 60-83.8 wt %;
(b3) polyethylene glycol monomethyl ether 1-3 wt %;
(b6) a polyhydroxyl chain extender 0.1-1 wt %;
(b4) a polyamine chain extender 0.1-5 wt %; and
(b5) a polyamine chain extender(b′) 1-2 wt %; and wherein
(a4) the polyamine chain extender and (b4) the polyamine chain extender are polyamine chain extenders which are not substituted by ionic or potentially ionic groups;
(a5) the polyamine chain extender and (b5) the polyamine chain extender are polyamine chain extenders which are substituted by ionic or potentially ionic groups; and
(b6) the polyhydroxy] chain extender is a low-molecular weight polyhydroxyl chain extender.