Cleaning compositions for solid surfaces – auxiliary compositions – With oxygen – halogen – sulfur – or nitrogen containing or...
Reexamination Certificate
2000-11-21
2002-07-30
Hardee, John (Department: 1751)
Cleaning compositions for solid surfaces, auxiliary compositions
With oxygen, halogen, sulfur, or nitrogen containing or...
C512S004000, C424S076400
Reexamination Certificate
active
06426325
ABSTRACT:
BACKGROUND OF THE INVENTION
U.S. Pat. No. 4,020,156 to Murray discloses a fragrant bead composition with a multiplicity of prilled urea beads. The beads have an adherent surface coating consisting essentially of finely divided particles of calcium silicate, magnesium carbonate, or silicon dioxide, and dextrin as a binder. The particles have a surface area of from about 80 to about 400 square meters per gram and contain a fragrance. The adsorbent is present in a ratio of from about 1 to 5 parts per 100 parts by weight of urea and in the coating in a ratio of about 0.2 to 2 parts per part by weight of dextrin; the fragrance is present in a ratio of from 1 to 3 parts per part by weight of adsorbent.
U.S. Pat. No. 4,110,261 to Newland, discloses a molding composition of petroleum wax and a synthetic polymer with a molecular weight below 10,000 and about 15% of a fragrance. In one embodiment, this constitutes a shell about an unperfumed core of wax.
U.S. Pat. No. 4,209,417 to Whyte discloses perfumed particles having a continuous water-soluble polymer matrix in which there is uniformly dispersed perfume/emulsifier droplets. Droplets on the surface give an immediate perfume effect while droplets below the surface give a sustained release perfume. The droplets within the matrix are released upon contact with water. The perfumed particles have a particle size of from 40 microns to 1400 microns, preferably 175 microns to 1000 microns while the perfume/emulsifier droplets have diameters of from 0.01 microns to 0.5 microns.
U.S. Pat. No. 4,225,444 to Schmitt discloses butanoyl cyclohexane derivatives as a perfume which can be used in various compositions (soaps, space odorants and deodorants, colognes, toilet water, bath preparations etc.) including powders such as talcs, dusting powders, face powders and the like. The perfume composition or fragrance composition can contain a vehicle, or carrier such as a liquid such (a nontoxic alcohol or glycol such as propylene glycol) or an absorbent solid, such as gum (such as gum arabic or gelatin).
U.S. Pat. No. 4,267,166 to Yajima discloses a composition (edible particles, an edible troche, an edible liquid, chewing gum or toothpaste) for treating bad breath with from 0.5 to 50% by weight of cyclodextrin and an edible carrier for oral administration.
U.S. Pat. No. 4,904,639 to Hallam discloses an air freshener having a homogenized mixture of polyethylene glycol and water as a plasticizing agent with a perfume incorporated therein. The air freshener is made by mixing particulate solid polyethylene glycol with a plasticizing amount of water to form a slurry, heating, and agitating the slurry until it is homogenized, adding a perfume to the homogenized material while agitating to disperse the perfume, and solidifying the composition so that the perfume is dispersed throughout.
U.S. Pat. No. 5,041,421 to King discloses a fragrance having discrete pellets of compressed salt, typically sodium chloride, with a fragrant oil dispersed within the pellets. The compressed salt is disclosed as being odorless, nonflammable, nontoxic, nonallergenic, nonnutritive, environmentally safe, homogeneous, non-crumbling with a high pressure break strength, and does not melt even at elevated temperatures. The fragrance is uniformly dispersed throughout the pellets, a feature which is said to be beneficial since the composition has no surface film.
It also is generally known that particulate materials such as soaps and detergents are spray dried to remove moisture. Typically, however, the addition of a fragrance is accomplished by spraying, thereby reintroducing moisture into the spray dried material and requiring another mixing operation.
DETAILED DESCRIPTION
The dry fragrance composition of the present invention utilizes a nonabsorbent solid inorganic particulate substrate on the surface of which is substantially uniformly deposited a fragrance. The resulting fragrance composition can be used to impart a fragrance to a second particulate material, such as laundry detergents, automatic dishwasher detergents, animal litter, bath salts, carpet cleaners, rug and room deodorizers, fabric bleaches, powdered cleaners, fabric softeners, and the like, through simple physical admixture and without the need to wet or moisten the second particulate material. The fragrance and formulation of powdered, granulated, and dry blended products can thus be enhanced. The final products can be formulated as powders or in the form of unit dose, tablet, pouch, gelcap, and the like.,
Moreover, when the fragrance is applied to the surface of the nonabsorbent solid inorganic particulate substrate, as opposed to being dispersed in and/or throughout the second particulate material, an increase in fragrance strength and performance can be discerned, meaning that less fragrance need be added. Manufacturing is also simplified and waste is reduced since addition is more controlled and does not require spraying while at the same time the stability of the fragrance in the finished product is improved.
The nonabsorbent solid inorganic particulate substrate will be inert to the second particulate material, that is to the material to which it is to be added. Suitable nonabsorbent solid inorganic particulate substrates include alkali metal chlorides, sulfates, or tripolyphosphates, soda ash, borax, and zeolites. Preferably the nonabsorbent solid inorganic particulate substrate is sodium chloride. Combinations of nonabsorbent solid inorganic particulate substrates can be used.
Ideally the density and particle size of the nonabsorbent solid inorganic particulate substrate is selected so as to approximate the density and particle size of the second particulate material, thereby facilitating maintenance of product homogeniety. A wide variety of particle sizes for the nonabsorbent solid inorganic particulate substrates can be employed, ranging from a mesh size of from about 400 to about 10.
The amount of fragrance carried by the nonabsorbent solid inorganic particulate substrate will vary with the substrate but flowability can be readily controlled. Thus if with a given fragrance level a drier, more flowing composition is desired, a moisture absorbing material such as zeolite can be added to the nonabsorbent solid inorganic particulate substrates carrying the fragrance until the desired flowability is obtained.
The term “fragrance” as used herein refers to any odoriferous material having a vapor pressure below atmospheric pressure at ambient temperatures. The fragrance material will most often be liquid at ambient temperatures. A wide variety of chemicals are known for fragrance uses, including materials such as aldehydes, ketones, and esters. More commonly, naturally occurring plant and animal oils and exudates comprising complex mixtures of various chemical components are known for use as fragrances. The fragrances herein can be relatively simple in their composition or can comprise highly sophisticated complex mixtures of natural and synthetic chemical components, all chosen to provide any desired odor. Typical fragrances can comprise, for example, woody/earthy bases containing exotic materials such as sandalwood oil, civet and patchouli oil. The fragrances can be of a light floral fragrance, e.g. rose extract, violet extract, and lilac. The fragrances can also be formulated to provide desirable fruity odors, e.g. lime, lemon and orange. Any material which exudes a pleasant or otherwise desirable odor can be used in the present invention.
The fragrance composition is deposited on the surface of the nonabsorbent solid inorganic particulate substrate so that there is from about 0.1% to about 30%, by total carrier weight of the fragrance composition, preferably from about 1% to about 20%. Preferably there is from about 4 to about 15%, by total carrier weight of the fragrance composition. The actual fragrance component of the fragrance composition typically will be oils of organic nature having different volatilities, many of which are commercially available. Typical fragrant oils are set forth in the Kirk-Othme
Dente Stephen V.
Weston William
Hardee John
Mathews, Collins Shepherd & McKay, P.A.
Robertet Fragrances
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