Microcapsule, treating liquids containing the same, and textile structure having microcapsules adhering thereto

• US 5,232,769 A
• Filed: 03/29/1991
• Issued: 08/03/1993
• Est. Priority Date: 08/01/1989
• Status: Expired due to Term

• Current Assignee: Kanebo, Ltd. (HOYU Company Limited)
• Original Assignee: Kanebo, Ltd. (HOYU Company Limited)
• Inventors: Kikuchi, Masaru, Yoshida, Takashi, Fukuda, Shigeru, Mutagami, Shogo, Miyoshi, Kyoji, Shiomura, Shigeo, Yamato, Yoshihisa, Okamoto, Mihoko, Ogawa, Yasuhiro, Yamauchi, Toshio, Mizukami, Yoshikatsu, Fuse, Toshikazu
• Primary Examiner(s): CANNON, JAMES
• Application Number:
  US07/667,405
• Time in Patent Office: 858 Days
• Field of Search: 428/240, 428/245, 428/281, 428/283, 428/288, 428/289, 428/290, 428/341, 428/320.2, 428/321.5
• US Class Current: 442/123
• CPC Class Codes: A41B 17/00 Selection of special materials for underwear
• CPC Class Codes: A61K 2300/00 Mixtures or combinations of active ingredients, wherein at least one active ingredient is fully defined in groups A61K31/00 - A61K41/00
• CPC Class Codes: A61K 2800/412 Microsized, i.e. having sizes between 0.1 and 100 microns
• CPC Class Codes: A61K 31/355 Tocopherols, e.g. vitamin E
• CPC Class Codes: A61K 31/375 Ascorbic acid, i.e. vitamin C; Salts thereof
• CPC Class Codes: A61K 31/415 1,2-Diazoles
• CPC Class Codes: A61K 31/60 Salicylic acid; Derivatives thereof
• CPC Class Codes: A61K 31/621 having the hydroxy group in position 2 esterified, e.g. benorylate
• CPC Class Codes: A61K 8/0208 Tissues; Wipes; Patches
• CPC Class Codes: A61K 8/11 Encapsulated compositions
• CPC Class Codes: A61K 8/9711 Phaeophycota or Phaeophyta [brown algae], e.g. Fucus
• CPC Class Codes: A61K 8/9789 Magnoliopsida [dicotyledons]
• CPC Class Codes: A61K 9/5031 obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polyethylene glycol, poly(lactide-co-glycolide)
• CPC Class Codes: A61K 9/70 Web, sheet or filament bases ; Films; Fibres of the matrix type containing drug hollow drug-filled fibres A61K9/0092
• CPC Class Codes: A61L 15/20 containing organic materials
• CPC Class Codes: A61L 15/44 Medicaments
• CPC Class Codes: A61L 15/46 Deodorants or malodour counteractants, e.g. to inhibit the formation of ammonia or bacteria
• CPC Class Codes: A61L 2300/21 Acids
• CPC Class Codes: A61L 2300/216 with other specific functional groups, e.g. aldehydes, ketones, phenols, quaternary phosphonium groups
• CPC Class Codes: A61L 2300/30 Compounds of undetermined constitution extracted from natural sources, e.g. Aloe Vera
• CPC Class Codes: A61L 2300/402 : Anaestetics, analgesics, e.g. lidocaine
• CPC Class Codes: A61L 2300/43 : Hormones, e.g. dexamethasone
• CPC Class Codes: A61L 2300/622 : Microcapsules
• CPC Class Codes: A61Q 13/00 : Formulations or additives for perfume preparations essential oils or perfumes per se C11B9/00
• CPC Class Codes: B01J 13/025 : Applications of microcapsules not provided for in other subclasses
• CPC Class Codes: D06M 13/005 : Compositions containing perfumes; Compositions containing deodorants
• CPC Class Codes: D06M 16/00 : Biochemical treatment of fibres, threads, yarns, fabrics, or fibrous goods made from such materials, e.g. enzymatic
• CPC Class Codes: D06M 23/12 : Processes in which the treating agent is incorporated in microcapsules making microcapsules B01J13/02
• CPC Class Codes: Y10T 428/249994 : Composite having a component wherein a constituent is liquid or is contained within preformed walls [e.g., impregnant-filled, previously void containing component, etc.]
• CPC Class Codes: Y10T 428/249997 : Encapsulated liquid
• CPC Class Codes: Y10T 428/273 : of coating
• CPC Class Codes: Y10T 428/2907 : with coating or impregnation
• CPC Class Codes: Y10T 428/2938 : Coating on discrete and individual rods, strands or filaments
• CPC Class Codes: Y10T 442/2525 : Coating or impregnation functions biologically [e.g., insect repellent, antiseptic, insecticide, bactericide, etc.]

Abstract

This invention relates to a microcapsule having a particle diameter of 2˜300 μm and comprising a substance acting to improve physiological conditions of human skin, for example, substances exhibiting such effects as skin whitening, aging preventive, humidity preservable, itch suppressive, pain-killing, or antiphlogistic ones, and/or aromatic agents contained within the filmy coating of synthetic high molecular substance. The microcapsule is not broken when making, processing, or laundering the textile structure, but is gradually broken when the textile structure is put on the human body, used for another purpose, or subjected to intentional application of friction or pressure thereto, and sustainedly releases acting substances contained therein. Treatment liquids comprising these microcapsules and binder, preferably containing a spraying agent, adapt the microcapsules to tightly adhere to textile structures such as stockings underwear, and bedclothes, thereby providing a textile structure to exhibit the aforesaid effects.

Claims

1. A textile structure having microcapsules adhered thereto by a binder, said microcapsules having a particle diameter in the range of 2˜

40 μ

m and a wall membrane comprising a synthetic high molecular material and encapsulating a substance for improving physiological conditions of the human skin, said substance selected from the group consisting of ascorbic acids, tocopherols, seaweed extracts, antipruritics and analgesics, said microcapsules and binder being in a weight ratio in the range of 10;

1˜

1;

5, the total amount of both the microcapsules and binder being 0.3˜

15% based on the weight of the portions of the fibers to which the microcapsules and binder are adhered to.

2. The textile structure claimed in claim 1, which is a stocking.

3. The textile structure claimed in claim 1, which is an underwear.

4. The textile structure claimed in claim 1, wherein said microcapsules have a wall membrane thickness of from 0.3˜

4 μ

m.

5. The textile structure claimed in claim 1, wherein said microcapsules have a wall membrane thickness of from 0.53˜

2 μ

m.

6. The textile structure claimed in claim 1, wherein said substance is an ascorbic acid.

7. The textile structure claimed in claim 1, wherein said substance is a tocopherol.

8. The textile structure claimed in claim 1, wherein said substance is a seaweed extract.

9. The textile structure claimed in claim 1, wherein said substance is an antipruritic agent.

10. The textile structure claimed in claim 1, wherein said substance is an analgesic agent.

11. A textile sheet material, wherein a first textile fabric, having microcapsules adhered thereto by a binder, is laminated with a second textile fabric or sheet, said microcapsules having a particle diameter in the range of 2˜

40 μ

m and a wall membrane comprising a synthetic high molecular material and encapsulating a substance for improving physiological conditions of the human skin, said substance being selected from the group consisting of ascorbic acids, tocopherols, seaweed extracts, antipruritics and analgesics.