Absorbent articles comprising nanoparticles

• US 7,988,779 B2
• Filed: 11/01/2004
• Issued: 08/02/2011
• Est. Priority Date: 10/30/2003
• Status: Expired due to Fees

• Current Assignee: NANO Met-Zero, Inc.
• Original Assignee: McNeil-PPC Incorporated (Johnson & Johnson)
• Inventors: Mordas, Carolyn J., Disalvo, Anthony L.
• Primary Examiner(s): Green; Anthony
• Assistant Examiner(s): Parvini; Pegah
• Application Number:
  US10/979,364
• Publication Number:
  US 20050115462A1
• Time in Patent Office: 2,465 Days
• Field of Search: 106/403, 502/400, 424/618, 427/372.2, 427/452, 427/199, 427/219, 427/212
• US Class Current: 106/403
• CPC Class Codes: A01N 25/28 Microcapsules or nanocapsules
• CPC Class Codes: A61F 13/8405 Additives, e.g. for odour, disinfectant or pH control
• CPC Class Codes: A61F 2013/8426 with metallic salts
• CPC Class Codes: A61K 2800/413 Nanosized, i.e. having sizes below 100 nm
• CPC Class Codes: A61K 2800/621 by inorganic compounds
• CPC Class Codes: A61K 8/0241 Containing particulates characterized by their shape and/or structure see also A61K8/04, A61K8/11, and A61K8/14, further aspects are classified in A61K2800/40 and subcodes
• CPC Class Codes: A61K 8/0245 Specific shapes or structures not provided for by any of the groups of A61K8/0241
• CPC Class Codes: A61K 8/19 containing inorganic ingredients
• CPC Class Codes: A61K 8/25 Silicon; Compounds thereof
• CPC Class Codes: A61K 9/5115 Inorganic compounds
• CPC Class Codes: A61L 15/18 containing inorganic materials
• CPC Class Codes: A61L 15/42 Use of materials characterised by their function or physical properties liquid bandages A61L26/00
• CPC Class Codes: A61L 15/46 Deodorants or malodour counteractants, e.g. to inhibit the formation of ammonia or bacteria
• CPC Class Codes: A61L 2300/102 Metals or metal compounds, e.g. salts such as bicarbonates, carbonates, oxides, zeolites, silicates
• CPC Class Codes: A61L 2300/104 Silver, e.g. silver sulfadiazine
• CPC Class Codes: A61L 2300/624 Nanocapsules
• CPC Class Codes: A61Q 11/00 Preparations for care of the teeth, of the oral cavity or of dentures; Dentifrices, e.g. toothpastes; Mouth rinses
• CPC Class Codes: A61Q 19/00 Preparations for care of the skin
• CPC Class Codes: B82Y 5/00 Nanobiotechnology or nanomedicine, e.g. protein engineering or drug delivery
• CPC Class Codes: C09D 1/00 Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances
• CPC Class Codes: Y10T 428/2991 : Coated

Abstract

The present invention relates to soft surface coatings and absorbent articles comprising composite materials that are functionalized nanoparticles and in particular, metal-loaded nanoclays. In one embodiment, the metal is silver and the nanoparticle comprises a nanoclay. Silver ion is reduced to its neutral metal state (Ag⁰) and loaded onto the nanoclay.

Claims

1. A soft surface coating composition comprising:

1) a composite material comprising (a) an exfoliated nanoparticle having a surface and (b) a metal selected from Groups 3 to 12, aluminum and magnesium, wherein the metal is loaded onto the surface of the nanoparticle;

     2) a carrier medium;

     3) a surfactant; and

     4) one or more adjunct ingredients, and wherein the metal is in the neutral (0) metal state.

2. An absorbent article comprising a composite material comprising (a) an exfoliated nanoparticle having a surface and (b) a metal selected from Groups 3 to 12, aluminum and magnesium, wherein the metal is loaded onto the surface of the nanoparticle and is in the neutral (0) metal state.