US 8,946,100 B2 · Fibers of variable wettability and materials containing the fibers

Abstract

The present invention is directed to an absorbent material and the fibers therein, having two or more layers including an upper surface layer which has on the outer surface of the layer one or more surface area zones which are more wettable zones and adjacent thereto one or more less wettable zones, where the more wettable zones have a greater hydrophilicity than the less wettable zone. The present invention is also directed to the fibers therein, which contain polyvalent cation-containing compounds and fatty acid containing compounds. The present invention also provides for methods of treating fibers or solid materials and processes of producing the hydrophobic materials.

Claims10

Dependent claims

A fibrous material comprising a blend of fibers, wherein the blend of fibers comprises:

(a) cellulosic fibers bound with a dissociating polyvalent cation-containing compound;
wherein the polyvalent cation-containing compound is present in an amount from about 0.1 weight percent to about 20 weight percent based on the dry weight of the cellulosic fiber prior to treatment with the bound polyvalent cation-containing compound;
and
(b) synthetic fibers coated with a fatty acid containing compound, wherein substantially no polyvalent cation is present on the synthetic fibers;
and
wherein the fibrous material is hydrophobic.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application

11/471,040Filed 19 Jun 2006 · continuation

Priority

19 Dec 2003

Published

US 2006/0292951 A128 Dec 2006

Granted

3 Feb 2015

Term ends

Not estimatedThe source records don’t support an estimate.

Classification24 codes

B01J 20/223
Comprising organic material: containing metals, e.g. organo-metallic compounds, coordination complexes
A61F 13/53747
Characterised by the position of the layer relative to the other layers: the layer is facing the topsheet
A61L 15/52
Use of materials characterised by their function or physical properties: water-repellants
D06M 11/00
Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials

Family

Application60/531,706Us provisional application · filed 19 Dec 2003

Application60/569,980Us provisional application · filed 10 May 2004

PCT/US2004/043030Parent of this continuation · filed 20 Dec 2004

US 2006/0292951 A1Pre-grant publication · published 28 Dec 2006

US 8,946,100 B2This patent

From the US filing history. Foreign family members aren’t listed.

Fibers of variable wettability and materials containing the fibers

Life of this patent

Fibers of variable wettability and materials containing the fibers

Life of this patent

Abstract

Claims10