Surface-segregatable compositions and nonwoven webs prepared therefrom
US5696191A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 31, 1995 |
| Grant date | Dec 9, 1997 |
| Priority date | — |
| Expiry date | May 31, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/60
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
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, ##STR1## in which: (A) R.sub.1 -R.sub.9 are independently selected monovalent C.sub.1 -C.sub.3 alkyl groups; PA1 (B) R.sub.10 is hydrogen or a monovalent C.sub.1 -C.sub.3 alkyl group; PA1 (C) m represents an integer of from 1 to about 4; PA1 (D) n represents an integer of from 0 to about 3; PA1 (E) the sum of m and n is in the range of from 1 to about 4; PA1 (F) p represents an integer of from 0 to about 5; PA1 (G) x represents an integer of from 1 to about 10; PA1 (H) y represents an integer of from 0 to about 5; PA1 (I) the ratio of x to y is equal to or greater than 2; PA1 (J) the additive has a molecular weight of from about 350 to about 1,400; and PA1 (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 provide…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.