| abstract |
The invention described herein is a mixture comprising polymer molecules or salts thereof, comprising subunits L, K, and M to which the polymer molecules in the mixture are covalently bonded, wherein the average molecular weight of the polymer molecules in the mixture Is about 50 kDa to about 200 kDa, the mole% of subunit M is about 90.5 to about 96 mole%, and the mole% of subunit K is in the mixture, based on the total amount of subunits in the mixture. From about 2.8 to about 7.3 mol%, with respect to the total amount of subunits, and the mol% of subunit L is from about 1.2 to about 2. A mixture is provided that is 2 mol%. [Selection] Figure 1 |