Patent ID: 6824635
Filing Date: 2004-11-30
Classification: C08F,Y10T

Abstract:
In a crepe process which comprises applying a polymeric binder to a nonwoven web, and creping the nonwoven web on a creping drum, the improvement which comprises using an alkyiphenol ethoxylate-free polymer binder, said polymer binder formed by emulsion polymerization and having a peel value of 35% to 200% of a standard alkylphenol ethoxylate-based polymer binder control and a cure profile in which 55% cure is achieved within 30 seconds of being exposed to a temperature required for cure,wherein the alkyiphenol ethoxylate-free aqueous polymer binder is formed by reacting vinyl acetate, ethylene, and one or more crosslinking monomers, under emulsion polymerization conditions, in the presence of a combination of an anionic surfactant and a nonionic surfactant, wherein said anionic surfactant is a sodium laureth sulfate having 1 to 12 moles of ethylene oxide and said nonionic surfactant is a secondary alcohol ethoxylate containing 7 to 30 moles of ethylene oxide or an ethoxylated branched primary alcohol containing 3 to 30 moles of ethylene oxide, said primary or secondary alcohol containing 7 to 18 carbons.