US 10,005,868 B2  76  75  -continued  Water-repellent polymer 1 (shown by the following struc› tural formula)  Molecular weight (Mw)=l0,100  Dispersity (Mw/Mn)=l.51  Basic compound: Quencher 1, Quencher 2 (shown by the  following structural formulae)  PAGl  0  PAG2  Quencher 2  0  Water-repellent polymer 1  Quencher 1 55  60  65 