Patent ID: 9733170
Date: 2017-08-15
CPC Classifications: B01D,B01J,C08F,G01N

Claim:
1. A method of drying a sample, where the sample includes water, the method comprising: adding the sample and a polymeric drying agent to a container, the polymeric drying agent comprising a copolymer of at least a cationic monomer, an anionic monomer, and a crosslinker, in which the sample includes water and an analyte, the cationic monomer comprises [3-methylacryloylamino)propyl]trimethylammonium chloride, the anionic monomer comprises 2-acrylamido-2-methyl-1-propanesulfonic acid, and the crosslinker comprises N,N′-methylenebis(acrylamide); and sorbing the water from the sample to the polymeric drying agent.