Patent ID: 6337359
Filing Date: 2002-01-08
Classification: C08F,C08L,D04H,D06M,D21H,Y10S

Abstract:
A latex which is particularly beneficial for utilization as a binder for nonwoven applications made by the process which comprises the steps of:(1) polymerizing a seed monomer mixture comprising styrene, itaconic acid, surfactant and water soluble free radical initiator to form a seed; (2) sequentially adding at least six equal increments of a monomer mixture of styrene, butadiene and from about 6 to less than 10 wt % acrylic acid to the seed under emulsion polymerization conditions to form a styrene-butadiene-acrylic acid copolymer; and then (3) neutralizing the styrene-butadiene-acrylic acid copolymer to a pH of about 4.5 to 7 to form the latex.