Surface-segregatable compositions and nonwoven webs prepared therefrom

摘要

A surface-segregatable, melt-extrudable thermoplastic composition is provided which includes at least one thermoplastic polyolefin and at least one additive having the general formula, <IMAGE> in which: (A) R1-R9 are independently selected monovalent C1-C3 alkyl groups; (B) R10 is hydrogen or a monovalent C1-C3 alkyl group; (C) m represents an integer of from 1 to about 4; (D) n represents an integer of from 0 to about 3; (E) the sum of m and n is in the range of from 1 to about 4; (F) p represents an integer of from 0 to about 5; (G) x represents an integer of from 1 to about 10; (H) y represents an integer of from 0 to about 5; (I) the ratio of x to y is equal to or greater than 2; (J) the additive has a molecular weight of from about 350 to about 1,400; and (K) the additive is present in an amount of from about 0.5 to about 5 percent by weight, based on the amount of thermoplastic polyolefin. Melt-extrusion of the foregoing composition results in a wettable nonwoven web which remains wettable for at least two years at ambient temperature. A method of making such a wettable nonwoven web also is provided.