Fabric (woven – knitted – or nonwoven textile or cloth – etc.) – Coated or impregnated woven – knit – or nonwoven fabric which... – Coating or impregnation functions biologically
Reexamination Certificate
1999-04-06
2003-02-18
Morris, Terrel (Department: 1771)
Fabric (woven, knitted, or nonwoven textile or cloth, etc.)
Coated or impregnated woven, knit, or nonwoven fabric which...
Coating or impregnation functions biologically
C442S380000, C442S417000, C428S365000, C428S368000, C428S375000, C428S323000, C428S328000, C428S329000, C428S330000, C428S331000
Reexamination Certificate
active
06521553
ABSTRACT:
TECHNICAL FIELD
The present invention relates to a deodorant fibrous material and a method of producing the material and, more particularly, to a deodorant fibrous material that has a durable excellent deodorizing characteristic for bad odors, such as ammonium, amines, hydrogen sulfide, mercaptans and the like, and aldehydes, acetic acid and the like contained in tobacco odors, and the like, and that has a soft texture, and a method of producing the deodorant fibrous material.
BACKGROUND ART
Recently there has been a further growing demand for high level deodorizing functions provided in fibrous products such as clothing, household articles, interior products, various industrial materials and the like. Conventionally proposed as methods for providing deodorizing characteristics for fibrous materials are a method in which a deodorant substance is kneaded into the interior of polymers during synthetic fiber yarn production and a method in which a deodorizing agent is fixed to surfaces of fibers with a binder. As an example of the former method, a polyester fiber japanese patent publication (Kokoku) No. Hei JP-B 7-81206) containing titanium dioxide particles carrying phthalocyanine polycarboxylate thereon or the like may be cited. As an example of the latter method, a fiber japanese patent application laid-open (Kokai) No. Hei JP-A-7-189120) coated with a deodorization catalyst for oxidative decomposition of odor components, or the like, may be cited.
However, according to conventional methods, the kinds of odor component that can be deodorized are limited, and the deodorization effect on, for example, complex odors such as tobacco odor, containing large amounts of odor component such as aldehydes, acetic acid and the like, is insufficient. Furthermore, the conventional methods have problems in that for selection of deodorizing agents, the particle diameter, heat resistance, the affinity to fibrous polymer and the like are remarkably restricted, and the physical properties of material yarn are degraded. In addition, the aforementioned latter method has problems in that the texture becomes rough, and the washing durability is low, etc.
DISCLOSURE OF THE INVENTION
It is an object of the present invention to provide a deodorant fibrous material that has a durable excellent deodorizing characteristic for bad odors, such as ammonium, amines, hydrogen sulfide, mercaptans and the like, and aldehydes, acetic acid and the like contained in tobacco odors, and the like, and that can be provided with a soft texture, and a method of producing the deodorant fibrous material.
One aspect of the present invention provides a fibrous material wherein (1) an inorganic type component (partially or entirely replaceable by a polyorganic acid, ester or salt thereof, (2) a polyvinyl amine compound indicated by the following general formula [I] and/or a hydrazide compound and (3) a synthetic resin are attached to a surface of a fibrous material.
(In the formula, R indicates a CHO group or a CH
3
CO group, and n and m, independently of one another, are respective integers.)
Another aspect of the present invention provides a product formed from the aforementioned deodorant fibrous material. Yet another aspect of the invention provides a method of producing a deodorant fibrous material comprising applying to a surface of a fibrous material, preferably by a padding or coating method, a liquid deodorant composition comprising each of the abovementioned components (1)-(3), each of which respective components may be, independently of one another, dispersed or dissolved in a liquid medium, and then subjecting the fibrous material to heat treatment.
Prior to application of the deodorant composition as described above, the fibrous material may be subjected to immersion in a treatment bath of a liquid containing a cycloalkane halide compound. Especially after pretreatment with the cycloalkane halide compound, the fibrous material may be treated with a deodorant composition containing, in addition to the deodorant and binder components (1)-(3) a copolymer of a polyalkylene glycol with an aromatic dicarboxylic acid and an alkylene glycol. The present invention is able to produce a durable and excellent deodorizing characteristic for bad odors, such as ammonium, amines, hydrogen sulfide, mercaptans and the like, and aldehydes, acetic acid and the like contained in tobacco odors, and the like, and also provide a soft texture.
BEST MODE FOR CARRYING OUT THE INVENTION
As a fibrous material for use in the present invention, any fiber that is conventionally used for fibrous products, such as clothes, house furnishings, interior products and various industrial materials may be used. For example, synthetic fibers or semi-synthetic fibers formed from a synthetic resin, for example, a polyalkylene terephthalate such as polyethylene terephthalate, polybutylene terephthalate or the like, or a polyester copolymer of a polyalkylene terephthalate mentioned above and a third component, a polyamide such as nylon
6
, nylon
66
or the like, a polyamide copolymer of a polyamide mentioned above and a third component, a polyolefin such as polyethylene, polypropylene or the like, polyvinyl chloride, an acrylic resin, an acetate resin, or the like, a regenerated fiber such as Bemberg, rayon or the like, a cellulosic fiber such as cotton, flax, hemp, ramie, jute, Manila hemp or the like, a protein type fiber such as wool, silk or the like, or the like, may be cited.
These fibers may be used separately as a single component or in the form of a composite fibrous material obtained by blending, filament-combining, twisting, or weaving or knitting two or more species of the fibers. The fiber may take various forms, for example, filament, staple, textile, non-woven fabric, sewed products or the like.
These fibrous materials may be materials containing or treated with an additive, such as a dye, a pigment, an anti-oxidizing agent, a heat resistant agent, an anti-UV agent, a plasticizing agent, an antibacterial agent, a flame retardant agent or the like, which has been added in a fiber production step or a post-processing step.
Among the aforementioned fibrous materials, a polyester fiber formed from a polyester, such as polyethylene terephthalate, polybutylene terephthalate or the like, or a textile, a non-woven fabric or a sewed product containing a polyester fiber mentioned above, may be suitably used as a fibrous material for the present invention. The polyester is particularly suitable if used in a material provided with flame retardancy by a cycloalkane halide compound.
As a deodorizing agent in the deodorant fibrous material of the present invention, inorganic type components, i.e. components having at least one inorganic element or active carbon, and polyvinyl amine compounds indicated by the general formula (I) and/or hydrazide compounds may be used.
Preferably used as an inorganic type component are porous substances formed from silicon dioxide, titanium dioxide, zinc oxide, alumininm oxide or the like, porous substances such as zeolite, silica gel, active carbon or the like, or organic acid salts such as acetates or citrates, inorganic acid salts such as sulfates or nitrates, chlorides, hydroxides or oxides of metal such as copper, zinc, silver, lead, iron, aluminum, calcium, magnesium, manganese, nickel, cobalt or the like, and the like. Particularly preferred are copper compounds that chelates with nitrogen atoms in a synthetic resin thereby improving the compatibility of the treating liquid and improving the washing durability of these compounds.
The average particle diameter of the porous substance used as an inorganic type compound is preferably 0.3-100 &mgr;m and, particularly preferably, 0.5-10 &mgr;m, if the porous substance is a compound difficult to dissolve in water. If the average particle diameter is greater than 100 &mgr;m, the surface roughness feel of the fibrous material becomes considerable, and the texture also becomes rough and hard. If the average particle diameter is too small, industrial production beco
Hirata Masayuki
Hori Kouji
Kanaya Toshiharu
Kawaguchi Kouichi
Saito Kouichi
Befumo Jenna-Leigh
Morris Terrel
Toray Industries Inc.
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