SYNTHETIC RESIN BINDER COMPOSITIONS FROM ACRYLIC ACID ESTERS

摘要

Synthetic resin binder compositions for bonding nonwoven fabrics, methods of using the same, and the resulting bonded nonwoven fabrics, wherein the synthetic resin binder compositions comprise from about 10 percent to about 50 percent by weight of a polymodal molecular weight distribution synthetic acrylic ester resin in which (1) one mode or peak is present in the molecular weight range of from about 300 to about 2,000 and another mode or peak is present in the molecular weight range of from about 4,000 to about 600,000 and (2) from about 10 percent to about 40 percent by weight has a molecular weight in the range of from about 300 to about 2,000 and from about 90 percent to about 60 percent by weight has a molecular weight in the range of from about 4,000 to about 600,000 said polymodal molecular weight distribution synthetic acrylic ester resin having a swell index in tetrahydrofuran of from about 50 to about 200, from about 50 percent to about 90 percent by weight of insolubles in tetrahydrofuran, and a second order glass transition temperature of from about -40 DEG C to about +5 DEG C.