MX2011005401A - Method and composition for treating a fabric. - Google Patents

Method and composition for treating a fabric.

Info

Publication number
MX2011005401A
MX2011005401A MX2011005401A MX2011005401A MX2011005401A MX 2011005401 A MX2011005401 A MX 2011005401A MX 2011005401 A MX2011005401 A MX 2011005401A MX 2011005401 A MX2011005401 A MX 2011005401A MX 2011005401 A MX2011005401 A MX 2011005401A
Authority
MX
Mexico
Prior art keywords
fabric
treatment
water
treating
soap
Prior art date
Application number
MX2011005401A
Other languages
Spanish (es)
Inventor
Amitava Pramanik
Srinivasa Gopalan Raman
Somnath Das
Maya Treesa Saji
Vishal Saxena
Original Assignee
Unilever Nv
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Unilever Nv filed Critical Unilever Nv
Publication of MX2011005401A publication Critical patent/MX2011005401A/en

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Classifications

    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
    • D06M11/51—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with sulfur, selenium, tellurium, polonium or compounds thereof
    • D06M11/55—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with sulfur, selenium, tellurium, polonium or compounds thereof with sulfur trioxide; with sulfuric acid or thiosulfuric acid or their salts
    • D06M11/56—Sulfates or thiosulfates other than of elements of Groups 3 or 13 of the Periodic System
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/02—Anionic compounds
    • C11D1/04—Carboxylic acids or salts thereof
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/02—Inorganic compounds ; Elemental compounds
    • C11D3/04—Water-soluble compounds
    • C11D3/046—Salts
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/16—Organic compounds
    • C11D3/168—Organometallic compounds or orgometallic complexes
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/16—Organic compounds
    • C11D3/26—Organic compounds containing nitrogen
    • C11D3/33—Amino carboxylic acids
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D9/00—Compositions of detergents based essentially on soap
    • C11D9/04—Compositions of detergents based essentially on soap containing compounding ingredients other than soaps
    • C11D9/06—Inorganic compounds
    • C11D9/08—Water-soluble compounds
    • C11D9/10—Salts
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D9/00—Compositions of detergents based essentially on soap
    • C11D9/04—Compositions of detergents based essentially on soap containing compounding ingredients other than soaps
    • C11D9/22—Organic compounds, e.g. vitamins
    • C11D9/30—Organic compounds, e.g. vitamins containing nitrogen
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
    • D06M11/07—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with halogens; with halogen acids or salts thereof; with oxides or oxyacids of halogens or salts thereof
    • D06M11/11—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with halogens; with halogen acids or salts thereof; with oxides or oxyacids of halogens or salts thereof with halogen acids or salts thereof
    • D06M11/155—Halides of elements of Groups 2 or 12 of the Periodic System
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
    • D06M11/32—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond
    • D06M11/36—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond with oxides, hydroxides or mixed oxides; with salts derived from anions with an amphoteric element-oxygen bond
    • D06M11/38—Oxides or hydroxides of elements of Groups 1 or 11 of the Periodic System
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
    • D06M11/32—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond
    • D06M11/36—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond with oxides, hydroxides or mixed oxides; with salts derived from anions with an amphoteric element-oxygen bond
    • D06M11/46—Oxides or hydroxides of elements of Groups 4 or 14 of the Periodic System; Titanates; Zirconates; Stannates; Plumbates
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
    • D06M11/58—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with nitrogen or compounds thereof, e.g. with nitrides
    • D06M11/64—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with nitrogen or compounds thereof, e.g. with nitrides with nitrogen oxides; with oxyacids of nitrogen or their salts
    • D06M11/65—Salts of oxyacids of nitrogen
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
    • D06M11/73—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with carbon or compounds thereof
    • D06M11/76—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with carbon or compounds thereof with carbon oxides or carbonates
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
    • D06M13/10—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing oxygen
    • D06M13/184—Carboxylic acids; Anhydrides, halides or salts thereof
    • D06M13/188—Monocarboxylic acids; Anhydrides, halides or salts thereof
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
    • D06M13/322—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing nitrogen
    • D06M13/325—Amines
    • D06M13/342—Amino-carboxylic acids; Betaines; Aminosulfonic acids; Sulfo-betaines
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
    • D06M13/322—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing nitrogen
    • D06M13/35—Heterocyclic compounds
    • D06M13/352—Heterocyclic compounds having five-membered heterocyclic rings
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
    • D06M13/322—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing nitrogen
    • D06M13/368—Hydroxyalkylamines; Derivatives thereof, e.g. Kritchevsky bases
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M2200/00—Functionality of the treatment composition and/or properties imparted to the textile material
    • D06M2200/10—Repellency against liquids
    • D06M2200/12—Hydrophobic properties

Abstract

The invention relates to a method of treating a fabric. It particularly relates to a method of treating a fabric with a rinse product that reduce soil pickup and further ensures that the fabric is cleaner after the subsequent wash. It is thus, an object of the present invention to provide a method of treating a fabric to render the fabrics relatively more hydrophobic and especially to provide a method of treating a fabric during the rinse stage of the fabric cleaning process that reduces subsequent soiling of the fabric during use by the consumer. It has been found that contacting the fabric with a neutral aqueous solution, comprising a water- soluble zinc compound, a deposition aid selected from the group consisting of an amine compound or an amino acid and a soap before drying said fabric, provides the soil repellence to the fabric.

Description

M ETODO TO TREAT A N GENDER Technical field The invention relates to a method for treating a genre. : In particular, it relates to a method for treating a fabric with a rinse product that reduces the uptake of dirt and also ensures that the fabric is cleaner after subsequent washing.
Background and previous technology The genera have been traditionally cleaned using detergent formulations. Detergent formulations generally comprise surfactants and formers. It is believed that surfactants work by reducing the surface tension of water, thus ensuring preferential division of dirt from the surface of the fabric into the wash water.It is believed that the formers act by reducing the hardness of water, thereby ensuring Efficient use of surfactants Various other benefit agents have been included in detergent formulations, eg perfumes, optical brighteners, electrolytes, free-flowing agents, soil release polymers (SRP), anti-redeposition agents (ARD) , enzymes, bleaches, dyes and preservatives.Of the above, the SRP and ARD agents are added to the detergent formulation to intensify the cleaning by acting on the dirt.
The redeposition of dirt is a phenomenon that reduces effective cleaning as compared to what the surfactants can theoretically provide. The redeposition of dirt is a problem for a long time that detergent formulators have struggled to solve. The redeposition is defined as the division of dirt removed from dirty clothes back into so dirty / clean clothes during the washing process. This problem is illustrated by showing the gradual graying of a fresh white garment that has never been worn or worn but only through the wash load. This shows that one of the primary reasons for loss of whiteness or grayness is due to redeposition of dirt. Usually; the loss of whiteness due to redeposition is not evident in a simple wash cycle, but manifests itself gradually after multiple cycles. Some examples of common anti-redeposition polymers are carboxy methyl cellulose sodium (SCMC), Sokalan CP5 or CP7, polyaspartic acid, Alcosperse and Narlex H1200.
SRP agents act by mechanisms, which make dirt easier to release from the surface of the fabric.
Various agents have been used to provide soil release benefits: for example, starches, modified starches, carboxymethyl cellulose, polyethylene glycols, maleic anhydride copolymers, and anionic surfactants provide enhanced soil release when they are sprayed or mulched on polyamide polyester fabrics. before soiled In addition, the acrylate-based copolymers have been successfully deposited on acid rinse or rinsing fabrics containing relatively high concentrations of polyvalent metal ions or water soluble amine salts to give temporary dirt release finishes. The fluorinated dirt release agents can also be applied in a rinse mode. Polyester-based co-poly (ethylene terephthalate) (polyoxyethylene terephthalate) (PET-POET dirt release agents) have been particularly used for polyester fabrics. These polymers were marketed under the trade names of Permalose, Ciruelo, PTG, Ciruelo PTN and Milease T.: The above agents are generally included, in detergent formulations, which are added in the wash cycle of the cleaning process. These cleaning formulations do not help much to reduce subsequent post-wash fouling of the fabrics. The present inventors have determined during the course of their extensive research in this area that one of the main ways in which soiling of soils can be kept cleaner is by ensuring that the uptake of dirt by the post-wash fabric is minimized. The present inventors then invented a step hitherto not known to treat the fabric during the rinsing step with a zinc compound which is capable of giving the above benefits. Without wishing to link to a theory, the inventors believe that the present invention makes the surface of the fabric more hydrophobic, thereby ensuring the benefits of dirt repellency to the consumer goods. For the knowledge of the inventors, some documents have been published, which describe methods to make substrates more hydrophobic. GB 916,665 relates to a process and material for the antimicrobial treatment of a / o genera and describes compositions comprising a zinc complex in combination with amine compounds, such as urea and detergents.
WO 2004/003121 relates to disinfection compositions comprising chelating metal complexes for use in a / o pools, spas, laundry soaps, paint or surface coating additive, fiber preservative, plastic or wood and as carpet sanitizer or hard surface. ' Tang et al in Colloids and Surfaces A: Physicochem. Eng. Aspects 296 (2007) 92-96 describe a process for preparing uniform nanobariras of hydrophobic zinc oxide via a one step process through the precipitation transformation reaction in aqueous solution of zinc sulfate, sodium carbonate and hydroxide of sodium with sodium oleate.
Badre et al. in Nanotechnology 18 (2007) 365705 (4 pp) describe the preparation of superhydrophobic zinc oxide nanowire fixation films by initiating with zinc chloride by adjusting an electrochemical method followed by surface modification with stearic acid.
The present inventors have determined that the process described by the aforementioned technique is not suitable for daily application in the homes to treat consumer goods in terms of fulfilling the desired technical efficiency, safety and convenience for the consumer and cost.
Thus, one of the objects of the present invention is to provide a method for treating a genus to make the genera relatively more hydrophobic.
Another object of the present invention is to provide a method for treating a fabric during the rinsing step of the fabric cleaning process which reduces subsequent soiling of the fabric during use by the consumer.
Brief description of the invention The present invention provides a method for treating, a genus comprising the steps of: (a) contacting the fabric with an aqueous solution, at a pH in the range of 7 to 11, comprising (i) a water-soluble zinc compound, (ii) a depositionalloy selected from the group consisting of an amine or an amino acid compound, and (iii) a soap and (b) drying said genus. \ According to another aspect of the present invention, a gender treatment composition is provided which comprises: (i) 20 to 90% water-soluble zinc compound; (ii) 5 to 50% of a deposition aid selected from the group consisting of an amine compound or an amino acid; Y (ii) 5 to 50% soap. ! Detailed description of the invention The present invention provides a method that involves adding a set of compounds to water during the step of Rinse the washing process. In this way, the water together with the dissolved / dispersed compounds in it forms the treatment medium. The set of compounds are: < (i) a water-soluble zinc compound (ii) a deposition aid selected from the group consisting of an amine or an amino acid compound and (iii) a soap. : The pH of the aqueous solution is in the range of 7 to 1 1. It is preferred that the pH of the aqueous solution be in the range of 8 to 11. This pH can be the natural pH of the treatment medium when it contains the essential ingredients of the medium. In addition, the treatment medium may comprise an alkaline compound. Preferred alkali compounds are alkali metal carbonate or hydroxide. The most preferred alkaline compounds are sodium carbonate or sodium hydroxide. The alkaline compound is preferably present at 0.01 a i 0. 5%, more preferably 0.05 to 0.2% by weight of the treatment medium.
The step for treating the genus with the above set of compounds is preferably carried out for a period of about 15 minutes to about 90 minutes, preferably 20 minutes to one hour. This treatment step could be with the genus soaked in the treatment medium without I shaking or the treatment medium could be shaken. The term "water soluble" as used herein, refers to a substance having solubility of more than 0.1 g per 100 g of water at a temperature of 25 ° C. Preferred water-soluble zinc compounds for use in the present invention are zinc chloride, sulfate, nitrate or acetate, of which zinc nitrate is preferred. The zinc compound is preferably present at 0.01 to 1%, more preferably at 0.05 to 0.5% by weight of the treatment medium.
The deposition aid is either an amine compound or an amino acid. Suitable amine compounds are triethanol amine, diethanol amine or monoethanol amine; triethanol amine being more preferred. Suitable amino acids are alanine, alanine derivatives such as phenylalanine, 3,4-dihydroxy-L-phenylalanine or histidine. The deposition aid is preferably present at 0.01% to 0.5%, more preferably 0.05% to 0.3% by weight of the treatment medium.
The treatment medium also comprises soap. Soap is a salt of a fatty acid. Preferred soaps are C8-C24 soap, preferably C10-C2o-soap and most preferably C12-C soap; The soap may or may not have one or more double or triple carbon-carbon bonds. The iodine value of the soap, which is indicative of the degree of unsaturation, is preferably less than 20, more preferably less than 10, and most preferably less than 5. Saturated soap that does not have a double or triple carbon-carbon bond is particularly preferred. The soap can be soluble in water or insoluble in water. According to a preferred aspect, soap is soluble in water. Non-limiting examples of water soluble soaps that may be used in accordance with the present invention include sodium laurate, sodium caprylate and sodium myristate. The treatment medium preferably comprises at least 0.01 to 0.5%, more preferably 0.05 to 0.3% soap by weight of the treatment medium.
The method of the invention is carried out at a pH of the treatment medium in the range of 7 to 11, more preferably between 8 and 11 and most preferably between 8 and 9.
The genre treatment method of the invention can be performed without some heating or cooling, ie: at normal room temperature, for example, from 15 to 40 ° C.
The term "liquor to cloth ratio" or "L / C ratio" as used herein means the proportion of mass of the treatment medium that is in contact with the genus to the mass of the genus. It is preferred that the liquor to fabric ratio in the treatment step is preferably from 2 to 1000, more preferably from 5 to 50, most preferably from 5 to 20.
After the treatment step, the fabrics can be further rinsed although no additional rinsing step is essential to obtain the benefits of the invention. After treatment, the goods can be optionally tightened before drying, although this is not essential. The genres are then dried. The genera can be dried with air, dried in the sun! or i dried in a dryer. It is preferred that the goods are ironed after drying. I The method of the present invention for gender treatment can be carried out in the rinsing step after the Genres are washed by hand or the rinse can be performed on a machine.
The method of the invention has the additional advantage that the treated fabric has antibacterial property. Thus, the bacteria that are transferred to the genus of the atmosphere during storage and use, are either annihilated or not allowed to grow. One of the advantages of the antibacterial property of the treated genus is that; gives control of bad smell to the genre. It is well known that zinc compounds give anti-bacterial property to treated substrates. This is traditionally done by coating substrates with zinc oxide. The present invention provides greater anti-bacterial efficacy as compared to the prior art method for treating fabric with zinc oxide.
In accordance with another aspect of the present invention, there is provided a gender treatment composition comprising: (i) 20 to 90% water-soluble zinc compound; i (ii) 5 to 50% of a deposition aid selected from the group consisting of an amine compound or an amino acid; Y; (iii) 5 to 50% soap.
The water-soluble zinc compound is present preferably at 30-80%, more preferably at 55 to 70% by weight of the composition of the treatment. The deposition aid is present at 5-40%, more preferably 1 0-25% by weight of the Composition of gender treatment. The soap is preferably present at 5-40%, more preferably 1 5-25% by weight of the composition of gender treatment.
The composition preferably comprises an alkaline compound selected from alkali metal carbonate or hydroxide in the aqueous solution. The alkaline compound is preferably present in 5 to 30% by weight of the composition for the treatment of the fabric.; In accordance with yet another aspect of the present invention, there is provided the use of a composition of the invention to treat a fabric to make it hydrophobic to the extent of having a contact angle greater than 90 ° with water. The contact angle is preferably between 90 and 1 80 °. The contact angle is measured using a voltage drop method just after the addition of droplets.
The composition of the present invention is preferably in the solid form. Suitable solid forms are powders or granules.
Description of the drawing Figure 1 shows comparative data of example 18 (example I according to the invention, indicated as E-18) and example 19 (comparative example, indicated as E-19). The graph of Figure 1 shows the cleaning effect (by means of reflectance of light at 460 nm, lavadps values of R460) during 5 cycles of washing of dirt. AW indicates the value after washing and BW indicates the value before washing; and 1, 2,; 3, 4 and 5 refer to the 1st, 2nd, 3rd, 4th and 5th washing cycles respectively, j Examples 1 I The genera were treated by any of the treatments A, B or C as described below: i Treatment protocols i Treatment A: (according to the invention) To 1 liter of deionized water, 1 g of sodium laurate, 0.8 g of sodium carbonate was added and completely dissolved. To this were added 1.1 g of triethanolamine and finally 2.97 g; of Zn (N03) 2.6H20 were added. ! 40 genera each of 1 g (1 00 cm2) were soaked in 1 liter of the previous solution for 1 hour. After soaking, the seeds were rinsed once in 1 liter of deionized water and dried in air and ironed.
Treatment C: Without treatment 40 genera each of 1 g (10 cm2) were soaked in 1 liter of the deionized water for 1 hour. After soaking, the gels were rinsed once in 1 liter of deionized water and dried in air and ironed.
Treatment D: (Treatment according to the invention) To 1 liter of deionized water 1 g of sodium laurate, 0.8 g of sodium carbonate were added and completely dissolved. To this was added 0.5 g of dihydroxy-L-phenylalanine and finally 2.97 g of Zn (N03) 2 6H20 were added. 40 genera each of 1 g (1 00 cm2) were soaked in 1 liter of the previous solution for 1 hour. After soaking, the sorts were rinsed once in 1 liter of deionized water and dried in air and ironed.; Treatment E: (Treatment according to the invention) To 1 liter of deionized water, 1 g of sodium laurate, 0.8 g of sodium carbonate were added and completely dissolved. To this, 0.5 g of histidine was added and finally 2.97 g of Zn (N03) 2.6H20 were added. 40 genera each of 1 g (100 cm2) were soaked in 1 liter of the previous solution for 1 hour. After soaking, the genres They were rinsed once in 1 liter of deionized water and dried in air and ironed.
Treatment F: (Treatment according to the invention) To 1 liter of water 48 FH (Ca2 +: Mg2 +), 1 g of sodium laurate, 0.8 g of sodium were added and completely dissolved. To this, 1.1 g of triethanolamine were added and finally 2.97 g of Zn (N03) 2.6H20 were added. : i 40 genera each of 1 g (100 cm2) were soaked in 1 liter of I the previous solution for 1 hour. After soaking, the sorts were rinsed once in 1 liter of 48 FH water and dried in air and ironed.
Soiled protocol Soaked with carbon soot: In 1 liter of deionized water, 15 mg of Soot Carbon (Cabot India) and 50 mg of linear alkyl benzene sulfonate (NaLAS) were obtained. This dispersion was sonicated for 2 hours in a bath sonicator.; At 80 ml of the above dispersion, 10 genera (1 g each) were immersed and stirred for 5 minutes.The soiled goods were dried hanging in the air overnight.
Soot protocol with carbon soot - 2 In 1 liter of water 48 FH (molar ratio Ca: Mg = 2: 1), 150 mg of Soot Coal (Cabot India) were taken. This dispersion was sonicated for 2 hours in a bath sonicator.
At 100 mi from the previous dispersion, 9 genera (1 g each) were submerged and agitated for 2 minutes. The soiled goods were dried hanging in the air during the night. ! Dirting with red mud: To 1 liter of deionized water, 1.5 g of red mud (eg HURC, sieving, particle size <150 μ) were added and sonicated in a bath sonicator for 2 hours.
In 100 ml of the previous pasta, 10 genera (1 g each) were soaked for 2 minutes. The soiled goods were dried hanging in the air during the night. 1 Dirty with dirty engine oil: 2 ml of concentrated dirty engine oil (ie partially oxidized engine oil collected from a car after traveling 5000 km) was diluted in 50 ml of triolein. 200 μ? of the previous diluted dirt were then placed in a 11 g sort using a micropipette and the soiled soils were dried overnight. i Soiled dirt compound: 50 ml of triolein and 4 mg of iron oxide and 4 mg of carbon soot1 were mixed and sonicated using a bath sonicator for two and a half hours. 300 μ? of this dirt were used in 1 g of genus using a micropipette and the soiled goods were dried overnight.
: Messed up with diesel dirt box! The goods were hung in a diesel dirt chamber using a hanger. They got dirty when applying a load of 4500; W for 3 hours. Diesel exhaust fumes mainly comprise particulates of carbon soot together with a small amount of unburned mineral oil suspended in air and carbon dioxide.
Washing protocol · The typical washing protocol involved 20 g of sorts in 1 liter of deionized water containing 3 g of Surf Excel (eg Hindujstan U nilever Limited) for 1 5 minutes. They were washed in: a Tergotometer at 90 rpm for 30 minutes at room temperature. After washing, the goods were rinsed three times, each with 450 ml of water for 2 minutes in Tergotometer at 90 rpm and dried in air. ' Washing protocol - 2 The typical washing protocol involved soaking 20 g of sorts in 1 liter of 48 FH water (molar ratio Ca2 +: Mg2 + = 2: 1) containing 3 g of Surf Excel (eg H industan Unilever Limited) for 1 5 minutes. They were washed in a Tergotometer at 90 rpm for 30 minutes at room temperature. After washing, the goods were rinsed three times, each with 450 ml of 48 FH water for 2 minutes in the Tergotometer at 90 rpm and dried in air.
Reflectance measurement The reflectance of all genera before and after washing was measured using a Macbeth reflectometer at wavelength of 460 nm, UV excluded, SCI using a large aperture.
Experiments 1 to 6: Effect of the treatment method of the invention on the pick up of dirt.
The experiments were conducted with different genres I (having initial reflectance of 85) were treated according to treatment method A, B or C. The treated fabric was fouled with the red sludge soiling method, as described above. The reflectance of the genera after fouling was measured and the values are summarized in Table 1.
Table 1 The data in Table 1 indicate that the genera treated according to the method of the invention (Examples 1 and 4) tended to capture more dirt as compared to genera treated according to methods suggested in the past and as compared to genera not treated.
Experiments 7 to 17: Effect of the treatment method of the invention on the cleaning of the genera The experiments were conducted with different genres i (having initial reflectance of 85), which were treated with any of the treatment methods A to E. The treated goods were soiled with different methods of soiling, as described before. The reflectance of the soils after soiling and subsequently after washing was measured and the values are summarized in Table 2.
Table 2 Example Treatment Gender Fourth R460 (in R460 AR460 fouled) (after washed) 7 A Cotton Soot of 54.9 ± 2.4 67.7 ± 0.7 12 ± 2.4 carbon 8 B Cotton Soot of 55.8 ± 3.4 64.1 ± 2.3 8.3 ± 1.1 carbon 9 C Cotton Soot of 49.0 ± 0.5 54.8 ± 0.6 5.7 ± 0.4 I carbon 10 D Cotton Soot of 49.2 ± 1 .5 62.2 ± 1.3 13 ± 2 2 carbon 11 E Cotton Soot of 54.5 ± 1.3 66.3 ± 1.4 11.8 ± 2. carbon 3 12 A Poli- Hollín of 53.7 ± 1.9 63.8 ± 0.6 10.1 ± 2. cotton carbon 2 \ 13 B Poly-Soot of 52.3 ± 0.9 61.9 ± 0.4 9.6 ±?: ß I carbon cotton 14 A Cotton Oil of 34 ± 2 68 ± 2 34 ± 3 1 engine dirty 15 C Cotton Oil of 39.1 ± 0.9 62 ± 2 23 ± engine dirty 16 A Cotton Dirt 40 ± 1 75 ± 1 35 ± 1 compound 17 C Cotton Dirt 41 ± 1 67 ± 2 26 ± 3 composed The data in Table 2 indicate that the genera treated according to the method of the invention (Examples 7, 10-12, 14, 16) generally tend to capture less dirt as compared to genera treated according to methods suggested in the past and according to it is compared with genres not treated for the same type of genre and the same dirt protocol. In addition, the goods treated according to the method of the invention, after soiling also tend to be cleaner when washed using a standard washing protocol as compared to untreated goods or goods treated according to methods suggested in the past. i Examples 18 and 19: Effect of the method of the invention on the cleaning of goods after several cycles of treatment-soiled-washing · The goods were taken through several cycles, each cycle consisting of (i) treatment according to the method of Treatment A or Treatment C, (¡i) soiling of soils using protocol dirt soiling of diesel followed by (iii) the washing protocol. Example 18 was an experiment using cotton cloth, which was treated according to Treatment A while Example 1 9 was an experiment using cotton cloth, which was treated according to Treatment C. The data on reflectance during the course of 5 cycles are given in Figure 1. The data in Figure 1 indicate that the genera treated according to the invention (Example 1 8) give improved cleaning over several cycles; of washing.
Examples 20 to 23: Antibacterial efficacy 1 The antibacterial efficacy of substrates treated according to the invention was compared with the antibacterial efficacy of substrates treated with a prior art method, ie treatment with an equivalent amount of zinc oxide.
A known antimicrobial assay was modified to allow study on genders treated. The known method is as follows: Resazurin, a blue dye, undergoes reduction in; the presence of viable bacteria to form a resorufin, fluorescent pink dye, which emits fluorescence at 590 nm. The measurement of resorufin either by spectrophotometry or fluorimetry after several hours of incubation indicates the activity of bacteria and hence the antimicrobial activity of the compound used for the treatment.
The modified antibacterial assay was as follows: The bacterium Staphylococcus spp. (which is a bacterium that metabolizes fatty acids) was subcultured on CY agar plates at 37 ° C. Metabolically active cells were collected, '; which gave an optical density of 0.2 to 61 0 nm. This was further diluted (1: 1 0) in brain heart infusion broth BH I-Bacto medium 237500. Bacterial count at this concentration > it was determined as 1 07 cells / ml. Four 1 cm x 1 cm gender samples (treated and untreated) were introduced aseptically into a 24-well plate. Approximately 1 ml of the culture (diluted in BH I) and 0.5 μ? of 1% resazurin was added in each cavity. The plates were incubated at 37 ° C. The cavities were inspected for color change in 5 h. The color was measured using a fluorometer. The fluoro exploration was taken at 530EX / 620EM. The data are presented in Table 3. : i Table 3 Example Gender used or Fluorescence a 530EX / 620EM j 20 Medium only (without cells) 6 ± 0.5 21 Medium if n genres if n treat 48 ± 2.3 22 Medium with gender treated with 32 ± 1 .0 Commercial ZnO 23 Medium with gender treated with 1 0 ± 0.9! method according to Example 1 The data in Table 3 indicate that the fabric treated according to the invention is much superior to untreated samples and also superior i genus treated with conventional zinc oxide.
Experiments 24-29: Effect of the treatment method of the invention on the cleaning of genera in hard water The experiments were conducted with different genres (having initial reflectance of 85), which were treated with Treatment methods F (according to the invention) or C (Without treatment).
The treated genera were fouled with methods as shown in Table 4 below. The reflectance of the soils after soiling and subsequently after washing was measured and the values are summarized in Table 4.
Table 4 Example Treatment Gender Suspected R460 (in R460 (after; Treatment (Soiling protocol) of washing): soot C - (protocol of i 2) washing 2) i 24 F Cotton Soot 74.1 ± 2.7 87.5 ± 2.1; carbon 25 C Cotton Soot of 62.9 ± 2.6 78.8 ± 2.3 i carbon 26 F Polycotton Soot 75.7 ± 2.7 87.8 ± 2.3 i carbon 27 C Polialgodon Soot of 67.3 ± 1.0 82.0 ± 0.6 carbon 28 F Polyester Soot from 82.3 ± 1.4 92.2 ± 0.5 carbon 29 C Polyester Soot from 82.3 ± 0.9 91.8 ± 1.1; carbon The data in Table 4 indicate that the genera treated according to the method of the invention (Examples 24, 26, 28) generally tended to capture less dirt as compared to untreated genera when the treatment is carried out in hard water. In addition, the fabrics treated according to the method of the invention, after soiling also tended to be cleaner when washed in hard water as compared to untreated fabrics washed using the same protocol.
I I

Claims (9)

1. A method for treating a fabric comprising the steps of: a) contacting the fabric with an aqueous solution, at a pH in the range of 7 to 11, comprising (i) a water-soluble zinc compound, (ii) an auxiliary of deposition selected from the group consisting of an amine or an amino acid compound and (iii) a soap and b) drying said genus.
2. A method as claimed in claim 1, wherein the aqueous solution comprises 0.01 to 1% water-soluble zinc compound.
3. A method as claimed in any of the preceding claims, wherein the aqueous solution comprises 0.01 to 0.5% deposition aid.
4. A method as claimed in any of the preceding claims, wherein the aqueous solution comprises 0.01 to 0.5% deposition aid.
5. A method as claimed in any of the preceding claims, wherein the aqueous solution comprises 0.01 to 0.5% soap, selected from C8- soaps.
6. A method as claimed in any of the preceding claims, wherein said soap is soluble in water.
7. A method as claimed in any of: the preceding claims, wherein the desired pH is achieved by including an alkaline compound selected from alkali metal carbonate or hydroxide in the aqueous solution. ,
8. A method as claimed in any of; the preceding claims, wherein the fabric is ironed subsequent to the drying step. !
9. A gender treatment composition comprising, (i) 20 to 90% water-soluble zinc compound; (ii) 5 to 50% of a deposition aid selected from the group consisting of an amine or an amino acid compound; Y (iii) 5 to 50% soap. 'i 1 0. A composition according to claim 9, wherein the soap is selected from C8-C soaps
MX2011005401A 2008-11-20 2009-10-26 Method and composition for treating a fabric. MX2011005401A (en)

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