02.04.13
US Patent No. 8,138,137 B2; Amcol International Corporation, Hoffman Estates, IL, has patented a fabric softener composition that contains a cationic fabric softener and a fragrance delivery system. It contains fragrance loaded onto polymeric microparticles comprising a copolymer of ethylene glycol dimethacrylate and lauryl methacrylate and a barrier layer.