CompanyEconomically viable method of recovering sulfopolyester from wash water for subsequent reuse; sulfopolyester may be recovered and reused by processes such as evaporation and/or nanofiltration; final recovery of sulfopolyester may be achieved by further evaporation of water and/or salt precipitationUS7645359Jan 3, 2006Jan 12, 2010The Procter & Gamble Companyfibrous structures having cellulos