Cleaning compositions for solid surfaces – auxiliary compositions – Cleaning compositions or processes of preparing – Liquid composition
Reexamination Certificate
1998-12-16
2003-10-07
Kelly, Cynthia H. (Department: 1774)
Cleaning compositions for solid surfaces, auxiliary compositions
Cleaning compositions or processes of preparing
Liquid composition
C510S293000, C510S383000, C510S394000, C510S319000, C510S321000
Reexamination Certificate
active
06630437
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates to aqueous, transparent or translucent heavy duty liquid laundry detergents in transparent or translucent bottles comprising both colorants and f-dyes and/or UV absorbers. The f-dyes and/or UV absorbers protect the colorants present in the HDL composition from damage by harmful UV radiation.
BACKGROUND OF THE INVENTION
Liquid detergents have traditionally been sold in opaque bottles. However, use of clear bottles can be aesthetically appealing to consumers as they can see the color of the product, its consistency, and suspended particles if they are present. However, the use of clear bottles can lead to destruction of colorant by UV light. By UV light is meant light having wavelength of about 250 to about 460 nanometers (nm). Specifically, UVA generally is in range 320-400 nm, UVB about 290 to 320 nm and UVC below 290 nm, down to about 250 nm.
It has been known in the art that UV absorbers can be added to the bottle material during manufacture of clear bottles to protect them from becoming brittle and to protect the ingredients inside the bottle. For instance, in GB 2228940 the use of a dicarboxylate in polyester bottles to protect contents—mainly food—from 320-360 nm is described.
In EU 0461537A2 the use of film formers for blocking UV radiation from passing through glass bottles is described. While use of such ingredients can block the transmission of UV light through clear bottles, UV absorbers for inclusion in bottle material are expensive, and must be added when bottle material is hot and molten and there is the risk of burning the operator.
WO 97/26315 (Colgate discloses transparent containers with specific chromacity defined by x and y values. Specific dyes in the liquid are used to match the container. The reference does not disclose combination of colorant dye and UV absorber or beneficial effect
GB 1,303,810 discloses clear liquid medium and visually defined particles suspended therein. Detergent compositions with colorant dye and UV absorber are not disclosed.
U.S. Pat. No. 3,812,042 to Verdier discloses clear package containing liquids with a viscosity and clarity control system comprising urea, lower aliphatic alcohol and optional hydrotrope.
BRIEF DESCRIPTION OF THE INVENTION
It has now surprisingly been found that a relatively small amount of f-dye or UV absorber, when added to a liquid containing colorant dye, has the ability to dramatically reduce the destruction of colorant dye by UV light. This is unexpected in that the level of additive is small (0.001 to about 3%) and is dispersed throughout the liquid matrix. The use of f-dye has the advantage that is an ingredient already frequently used in HDL's and thus adds little or no additional cost, and it can be added at lower temperatures for safety than found with molten bottle materials. UV absorber added to the HDL has the advantage that it can be added at lower and safer temperatures than adding UV absorber to molten bottle material.
DETAILED DESCRIPTION OF THE INVENTION
The invention relates to enzyme containing transparent/translucent heavy duty liquids in clear bottles comprising relatively small amounts of f-dye or UV absorber to protect against destruction of colorant dye (e.g., caused by the light hitting dye molecules through the clear bottle).
UV Absorbers
Among families of UV absorbers which may be used are benzophenones, salicyclates, benzotriazoles, hindered amines and alkoxy (e.g., methoxy) cinnamates. Recitation of these classes is not meant to be a limitation on other classes of UV absorbers which may be used.
Water soluble UV absorbers particularly useful for this application include, but are not limited to: phenyl benzimidazole sulfonic acid (sold as Neo Heliopan, Type Hydro by Haarmann and Reimer Corp.), 2-hydroxy-4-methoxybenzophenone-5-sulfonic acid (sold as Syntase 230 by Rhone-Poulenc and Uvinul MS-40 by BASF Corp.), sodium 2,2′-dihydroxy-4,4′-dimethoxy-5-sulfobenzophenone (sold as Uvinul DS-49 by BASF Corp.), and PEG-25 paraaminobenzoic acid (sold as Uvinul P-25 by Basf Corp.).
Other UV absorbers which may be used are defined in McCutcheon's Volume 2, Functional Materials, North American Edition, published by the Manufacturing Confectioner Publishing Company (1997), a copy of which is hereby incorporated by reference into the subject application.
UV absorber may be present in the formulation with or without F-dye. UV absorber is used in the formulation from about 0.001 % to about 3%, preferably between 0.05% and 1%.
Fluorescent Dyes
Classes of fluorescent dyes which may be used include stilbeness; coumarin and carbostyril compounds; 1,3-diphenyl-2-pyrazolines; naphthalimides; benzazdyl substitution products of ethylene, phenylethylene, stilbene, thiophene; and combined hateroaromatics.
Among fluorescent dyes which may be used are also the sulfonic acid salts of diamino stilbene derivatives such as taught in U.S. Pat. No. 2,784,220 to Spiegler or U.S. Pat. No. 2612,510 to Wilson et al., both of which are hereby incorporated by reference. Polymeric fluorescent whitening agent as taught in U.S. Pat. No. 5,082,578, hereby incorporated by reference into the subject application, are also contemplated by this invention.
Finally, other dyes which may be used are defined in McCutcheon's Volume 2, Functional Materials, North American Edition as noted above in connection with UV absorbers.
Fluorescent dyes particularly useful for this application include, but are not limited to: the distyrylbiphenyl types such as Tinopal CBS-X from Ciba Geigy Corp. and the cyanuric chloride/diaminostilbene types such as Tinopal AMS, DMS, 5BM, and UNPA from Ciba Geigy Corp. and Blankophor DML from Mobay. Fluorescent dye may be present in the formulation with or without UV absorbing. F-dye is used in the formulation from about 0.001% to about 3%, preferably between 0.05% and 0.5%.
Colorant Dyes
Any type of colorant dye which may be destroyed by UV light is considered as part of the invention. Non limiting examples of such include, but are not limited to the following: Hidacid blue from Hilton Davis; Acid blue 145 from Crompton Knowles and Tri-Con; Pigment Green No. 7, FD&C Green No. 7, Acid Blue 80, Acid Violet 48, and Acid Yellow 17 from Sandoz Corp.; D&C Yellow No. 10 from Warner Jenkinson Corp.
The dyes are present in an amount of from 0.001% to 1%, preferably 0.01 to 0.4% of the composition.
Detergent Compositions
Detergent Active
The compositions of the invention contains one or more surface active agents (surfactants) selected from the group consisting of anionic, nonionic, cationic, ampholytic and zwitterionic surfactants or mixtures thereof. The preferred surfactant detergents for use in the present invention are mixtures of anionic and nonionic surfactants although it is to be understood that any surfactant may be used alone or in combination with any other surfactant or surfactants. The surfactant should comprise at least 10% by wt. of the composition, e.g., 11% to 75%, preferably at least 15% to 70% of the total composition, more preferably 16% to 65%, even more preferably 20% to 65%.
Nonionic Surfactant
Nonionic synthetic organic detergents which can be used with the invention, alone or in combination with other surfactants, are described below.
As is well known, the nonionic detergents are characterized by the presence of an organic hydrophobic group and an organic hydrophilic group and are typically produced by the condensation of an organic aliphatic or alkyl aromatic hydrophobic compound with ethylene oxide (hydrophilic in nature). Typical suitable nonionic surfactants are those disclosed in U.S. Pat. Nos. 4,316,812 and 3,630,929.
Usually, the nonionic detergents are polyalkoxylated lipophiles wherein the desired hydrophile-lipophile balance is obtained from addition of a hydrophilic poly-lower alkoxy group to a lipophilic moiety. A preferred class of nonionic detergent is the alkoxylated alkanols wherein the alkanol is of 9 to 18 carbon atoms and wherein the number of moles of alkylene oxide (of 2 or 3 carbon atoms) is
Bae-Lee Myongsuk
Bory Barbara
Hsu Feng-Lung Gordon
Kuzmenka Daniel Joseph
Murphy Dennis Stephen
Garrett Dawn
Kelly Cynthia H.
Mitelman Rimma
Unilever Home & Personal Care USA , division of Conopco, Inc.
LandOfFree
Transparent/translucent liquid compositions in clear bottles... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Transparent/translucent liquid compositions in clear bottles..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Transparent/translucent liquid compositions in clear bottles... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3160574