Quaternized copolymer of vinylpyrrolidone and dimethylaminoethyl methacrylate.PQ-11is a high molecu Quaternized copolymer of vinylpyrrolidone and dimethylaminoethyl methacrylate.PQ-11 is a high molecular weight product (average molecular weight ~ 1,000,000), supplied as a highly viscous, aqueous solution (20% solids). VP/DMAEMA Quaternized(PQ-11)