JP2011506788A - How to treat the dough - Google Patents

Abstract

The present invention provides a method for treating a dough comprising the step of contacting the dough with polymers A and B in an aqueous medium, wherein (a) polymer A is a homopolymer of vinyl alcohol, alkylene glycol, saccharide, and carboxylic acid. Or (b) polymer B is selected from the class consisting of homopolymers or copolymers of vinyl pyrrolidone, alkylene oxide, saccharide, and carboxylic acid;
Polymers A and B are not of the same class and the aqueous medium has a pH of less than 6.

Description

  The present invention relates to a dough processing method. The invention further relates to compositions and kits for the treatment of dough. The invention will be described below with reference to this application. However, it will be appreciated that the invention is not limited to this particular field of use.

  Any discussion of the prior art throughout this specification will be considered in any manner as an admission that such prior art is widely known or forms common common knowledge in the art. Should not.

  US2006604950A (Penninger and Bastigkeit, 2006) describes soil-releasing alkyl or hydroxyalkyl cellulose derivatives and polypeptides, hydrogels, polyvinyl alcohol, polyalkylene glycols, and homopolymers of acrylic acid, methacrylic acid, and maleic acid, and acrylics. A detergent composition for washing fabric materials comprising a copolymer of acids, methacrylic acid and maleic acid and a combination of hygroscopic polymers selected from the class consisting of mixtures of said homopolymers and copolymers. The use of hygroscopic polymers in combination with cellulose derivatives is disclosed to lead to improved cleaning properties.

  EP 025696 (Unilever, 1988) teaches that the improvement of soil suspension is achieved by adding a mixture of vinylpyrrolidone polymer and nonionic cellulose ether to the detergent composition.

  GB 994353 (Domestos, 1965) describes individual polymers when a mixture of specific polymeric materials is added alone to the same cleaning composition when incorporated into an immature detergent composition based on a synthetic surfactant. It teaches providing increased anti-re-segregation compared to single activity.

  US3771951 (Berni et al., 1973) and GB133803 (Gaf Corp, 1973) show that a detergent composition comprising a water-soluble surfactant and a mixture of water-soluble polyvinyl alcohol and water-soluble polyvinylpyrrolidone has increased soil suspension. Teaching to show the degree.

  The method described above has been reported to provide improved anti-re-deposition of soil and good cleaning of the fabric. However, no reduction in soiling after subsequent water washing of the fabric has been reported. Further, the cleaning composition essentially includes a surfactant, and the pH of the pre-purified water is alkaline or neutral.

  US4007305 (Kahar et al., 1977) addresses the problem of providing a satisfactory unfinished finish for fabrics that provides optimal soil release and soil water repellency. According to this document, it must be treated with an aqueous alkaline medium having a pH value of 7.5-11 and containing a water-soluble hydrophilic soil release polymer having a carboxylic acid group and a dispersed hydrophobic soil water-repellent fluorochemical. I must.

  On the other hand, various industrial treatments for fabric modification are known to make the fabric more susceptible to soiling. This type of dough modification is usually performed during the manufacture of the dough. In addition to being substrate specific, this treatment is relatively difficult to carry out at home.

US2006046950A (Penninger and Bastigkeit, 2006) EP025696 (Unilever, 1988) GB994353 (Domestos, 1965) US37751951 (Berni et al., 1973) GB133803 (Gaf Corp, 1973) US4007305 (Kahar et al., 1977)

  In view of the shortcomings of the prior art, one of the objects of the present invention is to provide a method of reducing fabric soiling that can be easily used at home.

  Another object of the present invention is to provide a method of treating a dough to reduce the soiling of the dough.

  Yet another object of the present invention is to provide a method of treating a dough that improves the efficacy of subsequent washing.

  Yet another object of the present invention is to provide a method for reducing fabric soiling that allows for increased deposition of beneficial agents such as perfumes and fluorescent agents.

  Yet another object of the present invention is to provide a method for treating fabrics that is effective with various types of fabrics such as cotton, polyester, and polycotton.

  Another object of the present invention is to provide a method for treating a fabric that is relatively easy to implement at home.

  The inventor has surprisingly contacted the dough with an aqueous medium having an acidic pH with two different polymers, one containing multiple hydroxyl groups and the other containing multiple carbonyl or ether groups. It has been found that it provides benefits such as increased polymer deposition, reduced soiling, ease of subsequent cleaning, and increased deposition of beneficial reagents.

According to a first aspect of the present invention, there is provided a method for treating a dough comprising the step of contacting the dough with polymers A and B in an aqueous medium, wherein (a) polymer A comprises vinyl alcohol, alkylene glycol, Selected from the class consisting of saccharides and homopolymers or copolymers of carboxylic acids; and (b) polymer B is selected from the class consisting of homopolymers or copolymers of vinylpyrrolidone, alkylene oxides, saccharides and carboxylic acids;
Polymers A and B are not of the same class and the aqueous medium has a pH of less than 6.

According to a second aspect of the invention, there is provided a composition for treating a dough comprising 1 to 99% by weight of Polymer A, 1 to 99% by weight of Polymer B, and 0 to 10% by weight of an acidic component. Wherein (a) polymer A is selected from the class consisting of homopolymers or copolymers of vinyl alcohol, alkylene glycol, saccharide, and carboxylic acid; and (b) polymer B is vinyl pyrrolidone, alkylene oxide, saccharide, and Selected from the class consisting of homopolymers or copolymers of carboxylic acids;
Polymers A and B are not of the same class and the pH of a 1% aqueous solution of the composition is less than 6.

  According to a third aspect of the present invention, there is provided a kit for treating a dough comprising the composition of the second aspect and a set of instructions for use.

Fabrics Fabrics that can be treated include synthetic as well as natural fibers. Examples of the fabric include cotton, polycotton, polyester, silk, and nylon. The method of the present invention can be used to treat apparel materials that form laundry in clothing and other fabric products and household laundry typical of laundry. Household materials that can be treated according to the method of the present invention include, but are not limited to, bedspreads, blankets, carpets, curtains, and cushions. Although the method of the present invention is primarily described for the treatment of fabrics, the method of the present invention can be advantageously used to treat other materials such as jute, leather, denim, and canvas. Be considered. It is contemplated that the method of the present invention can be used to process products such as shoes, rainwear, and jackets.

Polymer A
According to the present invention, polymer A has a plurality of hydroxyl groups or carboxyl groups. Polymer A preferably has a molecular weight of 300 from ^109. Polymer A is selected from the class consisting of homopolymers or copolymers of vinyl alcohol, alkylene glycols, saccharides, and carboxylic acids.

Some non-limiting examples of polymer A according to the present invention include:
(A) vinyl alcohol or a homopolymer of polyvinyl alcohol;
(B) homopolymers of ethylene glycol or propylene glycol, ie polyethylene glycol and polypropylene glycol;
(C) homopolymers of carboxylic acids, ie polycarboxylic acids such as polyacrylic acid, polymaleic acid, or copolymers of acrylic acid and maleic acid;
(D) polysaccharides such as starch, cellulose, sodium alginate, natural gums and their modified materials such as sodium carboxymethylcellulose, hydroxyethylcellulose.

  The homopolymer or copolymer of vinyl alcohol preferably has a molecular weight of 10,000 to 1,000,000, more preferably 50,000 to 500,000, most preferably 50,000 to 200,000. Commercially available polyvinyl alcohols that can be used include GOHSENOL® (Nippon Synthetic Chemical Industry), NOWIOL® (Clariant), and POVAL® (Kuraray).

  The alkylene glycol homopolymer or copolymer preferably has a molecular weight of 4000 to 20000, more preferably 5000 to 15000, and most preferably 5000 to 10,000. Commercially available polyalkylene glycol can be used. Some examples of commercially available polyalkylene glycols include POLYGLYKOL® (Clariant) and CARBOWAX® (Union Carbide).

  The carboxylic acid homopolymer or copolymer preferably has a molecular weight of 2000 to 10000000, more preferably 50000 to 1000000, most preferably 90000 to 500000.

The saccharide homopolymer or copolymer preferably has a molecular weight of 1000 to 10 ⁹ , more preferably 10,000 to 10 ⁹ , most preferably 100,000 to 10 ⁹ .

  Polymer A may be synthetic or natural. However, synthetic polymers are preferred over natural polymers.

  According to a preferred feature, the polymer A is water soluble.

  Polymer A is preferably selected from the class consisting of homopolymers or copolymers of vinyl alcohol or carboxylic acid.

  The homopolymer or copolymer of carboxylic acid is preferably polyacrylic acid or a copolymer thereof. Examples include SOKALAN® PA (BASF) and CARBOPOL® (Lubrizol).

The amount of polymer A is preferably from 0.005 to 2, more preferably from 0.02 to 1, most preferably from 0.05 to 0.5 mg per area (cm ² ) of the dough.

Polymer B
According to the invention, the polymer B has monomer units containing ether groups or carbonyl groups. Polymer B preferably has a molecular weight of 1000 to 10 ^9. Polymer B is selected from the class consisting of homopolymers or copolymers of vinyl pyrrolidone, alkylene oxides, saccharides, and carboxylic acids.

  Polymers and homopolymers of carboxylic acids and / or saccharides and / or polyalkylene glycol / ethers are either selected as polymer A or polymer B because they contain either hydroxyl or carboxyl groups and carbonyl or ether groups. Suitable for However, according to the essential features, polymer A and polymer B are not of the same class. It is particularly preferred that the polymers A and B are selected from different classes of polymers. While not wishing to be theoretically limited, the two polymers A and B, when dissolved in water, form a complex with a lower solubility than each of polymers A and B, which increases the deposition and It is understood that it contributes to other profits.

  The homopolymer or copolymer of vinylpyrrolidone preferably has a molecular weight of 1000 to 10,000,000, more preferably 10,000 to 1,000,000, and most preferably 30,000 to 500,000. Commercially available polyvinylpyrrolidone can be used, one example being LUVISKOL® (BASF).

  The polyalkylene oxide homopolymer or copolymer has a molecular weight greater than 20000. The molecular weight is preferably 20000 to 1000000, more preferably 30000 to 500000, and most preferably 50000 to 200000.

The saccharide homopolymer or copolymer preferably has a molecular weight of 1000 to 10 ⁹ , more preferably 10,000 to 10 ⁹ , most preferably 100,000 to 10 ⁹ . Any commercially available polyalkylene oxide, such as POLYOX® (Dow Chemical Co), can be used according to the present invention.

  Polymer B may be synthetic or natural. However, synthetic polymers are preferred over natural polymers.

  According to a preferred feature, the polymer B is water soluble.

  It is particularly preferred that the polymer B is selected from the class consisting of vinylpyrrolidone or alkylene oxide homopolymers or copolymers.

The amount of polymer B is preferably from 0.005 to 2, more preferably from 0.02 to 1, and most preferably from 0.05 to 0.5 mg per area (cm ² ) of the dough.

  Some examples of particularly preferred polymer A and polymer B combinations are described below.

Table 1: Preferred combinations of polymers

  The most preferred polymer combinations are those of the first three types in Table 1 above: PAA-PVP, PAA-PEO and PEG-PAA.

Aqueous Medium According to the present invention, the two types of polymers are contacted with the dough in an aqueous medium having a pH of less than 6. The aqueous medium preferably has a pH of less than 5, more preferably less than 4. The aqueous medium preferably has a pH greater than 1, more preferably greater than 2.

  When the polymer is added to the aqueous medium, the pH of the aqueous medium may be selected to be less than 6. Preferably an acidic component is added to the aqueous medium so that the pH of the aqueous medium is less than 6. Acidic components that lower the pH of the resulting aqueous medium to less than 6 are well known to those skilled in the art, and any suitable acidic component may be selected.

The aqueous medium may include either polymer A or polymer B, or both polymers. Alternatively, one of both polymers may be added to the aqueous medium during the process of the present invention.
Polymer A, when mixed with an aqueous medium, ranges from 0.005 to 10%, more preferably 0.05 to 5%, most preferably 0.05 to 2% by weight of the aqueous medium.

  Polymer B ranges from 0.005 to 10%, more preferably from 0.01 to 5%, most preferably from 0.01 to 2% by weight of the aqueous medium when mixed with the aqueous medium.

  The aqueous medium preferably includes an electrolyte. The electrolyte is preferably in the range of 0.001 to 5%, more preferably 0.01 to 1%, most preferably 0.04 to 0.2% by weight of the aqueous medium.

  While not wishing to be limited by theory, it is understood that the addition of electrolyte allows the process of the present invention to be performed with relatively low amounts of polymers A and B.

  Electrolytes that can be used according to the present invention include water-soluble ionic salts. The cation of the salt includes an alkali metal, alkaline earth metal, or trivalent metal cation. The salt anions include chloride, sulfate, nitrate, and phosphate. Some examples of electrolytes include sodium, potassium, magnesium, or calcium chloride, sulfate, or nitrate. Calcium salts are particularly preferred.

  According to a preferred feature, the aqueous medium comprises 200 ppm or less of an anionic surfactant. The aqueous medium contains no more than 100 ppm, more preferably less than 50 ppm anionic surfactant. It is particularly preferred that the aqueous medium is substantially free of anionic surfactant.

  The aqueous medium preferably includes at least one beneficial reagent. Useful reagents that can be included in the aqueous medium include, but are not limited to, ingredients such as perfumes, fluorescent agents, deodorants, antibacterial agents, rejuvenating dyes, bluing agents. One advantage of the present invention is that the deposition of beneficial reagents is increased.

Process Order It is considered that the dough is contacted with polymers A and B either sequentially or simultaneously in either order. Thus, the dough may be contacted with polymer A and subsequently with polymer B. Alternatively, the dough may be contacted with polymer B and subsequently contacted with polymer A. The dough may be contacted simultaneously with both polymers A and B. Although the dough may be contacted simultaneously with both polymers, it is preferred that the dough is contacted with the polymer continuously in either order.

Contacting Method The dough contacting step of polymers A and B can be performed in any suitable manner.

  Polymer A or polymer B or both are mixed with an aqueous medium before being contacted with the dough. Alternatively, polymer A may be mixed with a non-aqueous medium containing a solvent such as alcohol and acetone before being contacted with the dough. However, it is preferred that the polymer or both polymers be mixed with an aqueous medium before contacting the dough. The dough may be immersed in an aqueous medium containing one or more polymers. Alternatively, an aqueous medium containing one or more polymers may be sprayed onto the dough.

  It is also contemplated that either polymer A and B may be used in the form of an abradable stick that may be rubbed against the surface of the fabric to be treated and then contacted with an aqueous medium.

Composition According to a second aspect of the present invention, a composition for the treatment of a dough comprising 1 to 99% by weight of polymer A, 1 to 99% by weight of polymer B, and 0 to 10% by weight of acidic components Wherein (a) polymer A is selected from the class consisting of homopolymers or copolymers of vinyl alcohol, alkylene glycol, saccharide, and carboxylic acid; and (b) polymer B is vinyl pyrrolidone, alkylene oxide, saccharide. And selected from the class consisting of homopolymers or copolymers of carboxylic acids;
Polymers A and B are not of the same class and the pH of a 1% aqueous solution of the composition is less than 6.

  Said composition preferably comprises 5 to 95% by weight of polymer A, more preferably 10 to 90% by weight, most preferably 20 to 80% by weight. Said composition preferably comprises 5 to 95%, more preferably 10 to 90%, most preferably 20 to 80% by weight of polymer B.

  The polymer may be selected such that the pH of a 1% aqueous solution of the composition is less than 6. Preferably, acidic components are present in the composition at 0.1 to 10% by weight of the composition to ensure that the pH of a 1% aqueous solution of the composition is less than 6. Acidic components that lower the pH of the resulting aqueous medium to less than 6 are well known to those skilled in the art, and any suitable acidic component may be selected.

Kit According to a third aspect of the present invention, there is provided a kit for treating a dough comprising a composition of the second aspect and a series of instructions for use.

  It is particularly preferred that the polymers A and B are in separate implementations, i.e. the polymers A and B are individually held in separate implementations or are held in separate compartments in a two compartment implementation.

  The invention will now be described by way of example. The examples are for illustrative purposes only and do not limit the scope of the invention in any way.

Materials and Methods The following materials were used in the examples:

Table 2: Materials used in the examples

Deposition Polymer A was 450,000 molecular weight polyacrylic acid in Examples 1 and 2 and Comparative Examples 1-A to 2-B. Polymer B was 9 000 molecular weight polyvinyl pyrrolidone in Example 1 and Comparative Examples A and B. Polymer B in Example 2 and Comparative Examples C, D and 2A was a polyethylene oxide having a molecular weight of 100,000.

  For the deposition study, about 10 g of dough was treated with the polymer in solution and the weight increment was examined gravimetrically after drying of the treated dough.

Table 3: Polymer deposition on cotton, polycotton and polyester fabrics

  From this result, it can be observed that the deposition of the two types of polymers when used together by the method of the present invention is significantly higher compared to a fabric treated with only one of the polymers.

Dirt protocol The fabric was treated with polymer and dried. The dried dough was immersed in a carbon soot dispersion (150 ppm) in water stabilized by the addition of sodium alkylbenzene sulfonate (50 ppm). The dough was removed from the carbon soot solution, rinsed quickly in water and dried. The change in reflectance (ΔR), that is, the difference in the reflectance of the fabric before and after the soiling treatment is a measured value of the soiling degree of the fabric, and a negative value of ΔR indicates the soiling of the fabric.

The following abbreviations are used in the following table:
PEG 17500-Polyethylene glycol PAA 8000 with molecular weight 17500-Polyacrylic acid PVA 124000 with molecular weight 8000-Polyvinyl alcohol PVP 90000 with molecular weight 125000-Polyvinylpyrrolidone with molecular weight 90000

Table 4: Dirty cotton fabric with carbon soot

  From this result, the soil of the fabric treated in the method of the present invention is significantly lower than that of untreated fabric (Comparative Example I), compared to fabric treated with only one polymer (Comparative Examples F, G and H). But it is significantly lower.

Washing and washing protocol The dough was treated with polymer and dried. The dried dough was immersed in a carbon soot dispersion (150 ppm) in water stabilized by the addition of sodium alkylbenzene sulfonate (50 ppm). The dough was then dried. The dried dough was washed with water, sodium carbonate solution in water (0.15% by weight), and a commercial detergent in water (SURF EXCEL® 0.3% by weight). The change in reflectance (ΔR) was a measure of the fabric wash. Larger values of ΔR indicate better cleaning.

  The polymer A was polyacrylic acid having a molecular weight of 2000, and the polymer B was polyvinylpyrrolidone having a molecular weight of 90000. In Example 6, both polymers were used in a 0.2 wt% aqueous medium. The pH of the aqueous medium was 3.0. In Comparative Examples J and K, Polymers A and B were each used alone, each at 0.4% by weight of the aqueous medium (pH 2.7 and 7.0, respectively). Comparative Example L is an untreated dough (pH 7). The fabrics (cotton, polycotton and polyester) are washed according to a predetermined protocol and the results are summarized below.

Table 5: Cleaning fabrics soiled with carbon soot

  From this result, the cleaning efficiency for Example 6 within the scope of the present invention is higher than the cleaning efficiency obtained with Comparative Examples J, K and L which are outside the scope of the present invention. In particular, the washing efficiency is better when washed with sodium carbonate or water. Furthermore, the results show that the cleaning efficiency increases especially with polycotton and polyester when washed with a commercial detergent.

Effect of Electrolyte Polymer A was polyacrylic acid having a molecular weight of 450,000, and polymer B was polyvinylpyrrolidone having a molecular weight of 1300000. In all examples, both polymers were used at 0.1% by weight of the aqueous medium. The effect of electrolyte addition was investigated by adding various electrolytes at 0.1% by weight of the total aqueous medium. The pH of the aqueous medium was in the range of 2.7 to 3.0. The dough (cotton, polycotton and polyester) was washed using sodium carbonate (0.15 wt%) in water. The results are summarized below in terms of cleaning efficiency.

Table 6: Effect of electrolyte addition

  From this result, it is clear that the addition of electrolyte leads to a further increase in cleaning efficiency, especially for polycotton and polyester fabrics. Furthermore, for cotton fabrics, calcium chloride particularly increases cleaning efficiency.

Perfume Deposition Protocol Allyl amyl glycolate was used as a representative perfume ingredient. Polymer A was polyacrylic acid having a molecular weight of 450,000, and polymer B was polyvinylpyrrolidone having a molecular weight of 90000. Example 11 having both polymer A and B at 0.1% by weight in aqueous medium-pH 2.8, respectively Comparative Example M having polymer A and polymer B alone at 0.2% by weight in aqueous medium, respectively -Perfume was added to pH 3 and Comparative Example N-pH 7, and Comparative Example O-pH 7 as an untreated dough. The dough was tested for fragrance retention with an odor analyzer and recorded on a scale of 0 to 5 (a score of 0 indicates no odor intensity and a score of 5 indicates maximum odor intensity). Details are summarized in the following table.

Table 7: Perfume deposition on dough

  From the results in the above table, the perfume intensity at 60 minutes is significantly higher for the dough treated by the method of the present invention.

Fluorescence deposition The following experiments were performed using 2 ppm CBSX (CIBA) as the fluorescent agent. Details of polymers A and B are summarized below, together with the results for the white score measured by the reflectance value on cotton.

Table 8: Fluorescence deposition on fabric

  From this result, the fluorescence deposition indicated by the white score is higher than that of the untreated fabric (Comparative Example R) or the fabric treated with only one polymer (Comparative Examples P and Q). It is evident that the dough (Example 12) treated with both A and B increases.

  It will be understood that the above examples clearly and fully describe the manner in which the method of the present invention can be practiced. In addition, the method of the present invention reduces fabric soiling, improves the efficiency of subsequent cleaning, allows for increased deposition of beneficial reagents, and is effective on various types of fabrics including cotton, polycotton and polyester. It will be understood that it can be adapted to the purpose of providing a method of treating a dough.

Claims (11)

A method for treating a dough comprising the step of contacting the dough with polymers A and B in an aqueous medium,
(A) Polymer A is selected from the class consisting of homopolymers or copolymers of vinyl alcohol, alkylene glycols, saccharides, and carboxylic acids; and (b) Polymer B is a homopolymer of vinyl pyrrolidone, alkylene oxides, saccharides, and carboxylic acids. Or selected from the class consisting of copolymers;
Polymers A and B are not of the same class and the aqueous medium has a pH of less than 6.   The method of claim 1, wherein the aqueous medium comprises 200 ppm or less of an anionic surfactant.   The process according to claim 1 or 2, wherein the polymer A is selected from homopolymers or copolymers of vinyl alcohol or carboxylic acid.   4. A process according to any one of claims 1 to 3, wherein the polymer B is selected from vinylpyrrolidone or alkylene oxide homopolymers or copolymers.   5. The method according to any one of claims 1 to 4, wherein the carboxylic acid homopolymer or copolymer is polyacrylic acid or a copolymer thereof.   6. A method according to any one of claims 1 to 5, wherein the aqueous medium comprises an electrolyte.   The method of claim 6, wherein the electrolyte is in the range of 0.001 to 5% by weight of the medium.   The method according to any one of claims 1 to 7, wherein the pH of the aqueous medium is in the range of 1 to 10.   9. A method according to any one of the preceding claims, wherein the dough is contacted with polymers A and B either sequentially or simultaneously in any order. A composition for the treatment of a dough comprising 1 to 99% by weight of polymer A, 1 to 99% by weight of polymer B, and 0 to 10% by weight of an acidic component,
(A) Polymer A is selected from the class consisting of homopolymers or copolymers of vinyl alcohol, alkylene glycols, saccharides, and carboxylic acids; and (b) Polymer B is a homopolymer of vinyl pyrrolidone, alkylene oxides, saccharides, and carboxylic acids. Or selected from the class consisting of copolymers;
Polymers A and B are not of the same class and the pH of a 1% aqueous solution of the composition is less than 6.   A kit for the treatment of dough comprising the composition of claim 10 and instructions for use.