Patent ID: 11964032
Assignee: WANHUA CHEMICAL GROUP CO., LTD.
Field: Pharmaceuticals (Chemistry)
Classification: CPC A  C | IPC A  C

Claim 7:
8. A mask substrate, comprising the mask substrate composition according to claim 1, wherein, by the total mass of the mask substrate, the mass percentages of (a) the aqueous polyurethane dispersion (a) and (b) the aqueous polyurethane dispersion (b) in the mask substrate composition in the mask substrate are as follows:
(a) 5-90 wt % of the aqueous polyurethane dispersion (a); and
(b) 10-95 wt % of the aqueous polyurethane dispersion (b);
wherein the mask substrate further comprises components of the following mass percentages:
(c) 0-10 wt % of a thickener;
(d) 0-10 wt % of an emulsifier;
(e) 0-20 wt % of a grease;
(f) 0-1 wt % of a preservative;
(g) 0-1 wt % of a fragrance; and
(h) 0-80 wt % of deionized water.