Tissue papers, in particular pattern densified tissue papers, having an enhanced tactile sense of softness when treated with certain nonionic softeners are disclosed. These nonionic softeners are biodegradable and comprise sorbitan esters, ethoxylated/propoxylated versions of these sorbitan esters, or...http://www.google.es/patents/US5494731?utm_source=gb-gplus-sharePatente US5494731 - Tissue paper treated with nonionic softeners that are biodegradable
Tissue paper treated with nonionic softeners that are biodegradable
