FAST BLOOMING SURFACTANTS FOR USE IN FLUID TRANSPORT WEBS

摘要

Disclosed are fast blooming surfactants that are suitable for inclusion in film compositions that will be subsequently treated with a low surface energ y material to create a surface energy gradient between the underlying polymeri c structure of the film and spaced apart microscopic depositions of the low surface energy material. The surfactants have a permeation rate of less than 240 hours, a surface tensionin an aqueous solution at a concentration that i s greater than the critical micelle concentration that lies between the critic al surface tension of the underlying polymeric structure of the web material an d the critical surface tension of the low surface energy depositions; and an H LB between about 6 and about 16. Preferred surfactants also have a weight loss on heating to 250 ~C that is less than about 20 %. More preferred surfactants have a hydrophobic chain that is substantially saturated.