CN110924175A - Fabric care tablet - Google Patents
Fabric care tablet Download PDFInfo
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- CN110924175A CN110924175A CN201911280371.9A CN201911280371A CN110924175A CN 110924175 A CN110924175 A CN 110924175A CN 201911280371 A CN201911280371 A CN 201911280371A CN 110924175 A CN110924175 A CN 110924175A
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- tablet
- fabric care
- fabric
- cellulase
- care tablet
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- 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
- D06M23/00—Treatment of fibres, threads, yarns, fabrics or fibrous goods made from such materials, characterised by the process
-
- 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
- D06M11/77—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 silicon or compounds thereof
- D06M11/79—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 silicon or compounds thereof with silicon dioxide, silicic acids or their salts
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- 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
- D06M13/144—Alcohols; Metal alcoholates
- D06M13/148—Polyalcohols, e.g. glycerol or glucose
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- 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
- D06M13/165—Ethers
- D06M13/17—Polyoxyalkyleneglycol ethers
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- 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
- D06M16/00—Biochemical treatment of fibres, threads, yarns, fabrics, or fibrous goods made from such materials, e.g. enzymatic
- D06M16/003—Biochemical treatment of fibres, threads, yarns, fabrics, or fibrous goods made from such materials, e.g. enzymatic with enzymes or microorganisms
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- 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
- D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
- D06M2101/02—Natural fibres, other than mineral fibres
- D06M2101/04—Vegetal fibres
- D06M2101/06—Vegetal fibres cellulosic
Abstract
The invention discloses a fabric care tablet, and relates to the technical field of fabric care daily chemical products. The fabric care tablet comprises the following components in percentage by mass per unit tablet: 300-2400U/g cellulase; 5-20% of a nonionic surfactant; 5-40% of hydrophilic silicon dioxide; 5-10% of a binder; 1-10% of water. According to the scheme, the components are compounded to play a role in synergy, so that the stability of the cellulase can be improved, the cellulase can release activity in the washing process to exert the efficacy, and the storage and transportation of the product are facilitated. When the refreshing tablet is used, the fluff and the hair bulb which affect the appearance by the cotton fiber can be removed well by one time only by throwing the tablet once, the color recovery of the fabric, namely the effect of refreshing the fabric, can be achieved, and meanwhile, the fabric can not be damaged additionally.
Description
Technical Field
The invention relates to the technical field of fabric care daily chemical products, in particular to a fabric care tablet.
Background
After the cotton-containing fabric is used for a certain time, due to continuous friction and pulling in the using process, cellulose in an amorphous area of cotton fiber is gradually stripped from fiber bundles to form fluff on the surface of the fabric, a part of the fluff is wound together to form a hair ball on the surface of the fabric, the appearance of the fabric is old, the original color and luster are darkened and fuzzy, the hair ball has an aggregation effect after being formed, and the cellulose adhered to the surrounding amorphous area is gradually increased to influence the attractiveness.
The addition of cellulase to existing detergents can solve this problem to some extent. However, this method has many disadvantages, firstly, the existing liquid detergent or washing powder is usually a composition of various surfactants and various auxiliary agents, and these compositions contain cellulase-destroying surfactants, protease, peroxide, strongly alkaline substances and the like, which can reduce the activity of cellulase during washing and affect the stability of cellulase during storage; secondly, the cellulase can not only degrade fiber bundles in amorphous areas needing to be removed in cotton fibers, but also gradually destroy cellulose in crystalline areas needing to be protected, and the cellulase is continuously used for treating cotton-containing fabrics for a long time, so that continuous and undesirable damage can be caused to the crystalline areas of the cotton fibers, for example, cotton-containing fabrics such as jeans with rough edges and the like, cotton fiber fluff of the cotton-containing fabrics needs to be reserved as a characteristic decoration, but the existing washing products added with the cellulase can indiscriminately destroy the cotton fiber fluff, cause fluff loss and additionally cause damage to clothes.
Disclosure of Invention
The invention aims to solve the technical problem of the prior art and provides a fabric care tablet which does not cause additional damage to clothes.
In order to solve the above problems, the present invention proposes the following technical solutions:
a fabric care tablet comprising, in mass percent, per unit tablet:
300-2400U/g cellulase;
5-20% of a nonionic surfactant;
5-40% of hydrophilic silicon dioxide;
5-10% of a binder;
1-10% of water.
Preferably, the nonionic surfactant is selected from one or more of fatty alcohol ethyl/propoxylates, alkyl polyglycosides, fatty acid ethyl/propoxylates, fatty acid alkylolamides, and ethoxylated sorbitan esters.
Preferably, the weight ratio of the hydrophilic silica to the nonionic surface active is 1-2: 1.
Preferably, the hydrophilic silica has a water absorption value of greater than 2 ml/g.
Preferably, the binder is selected from at least one of starch, phosphate ester, sulfate ester, gelatin, polyethylene glycol, polyvinylpyrrolidone, polyvinylpolypyrrolidone, and polyvinyl alcohol.
Preferably, the composition further comprises 0.1-2% per unit tablet of an antifoaming agent.
Preferably, the defoaming agent is at least one selected from the group consisting of polysiloxanes, polyether-modified silicone oils, alcohols, fatty acids, fatty acid esters, phosphate esters, mineral oils, amides, copolymers of ethylene oxide and propylene oxide.
Preferably, the defoamer is a polysiloxane.
Preferably, the tablet further comprises 10-25% of a disintegrant per unit tablet.
Preferably, the disintegrant is selected from at least one of crospovidone, sodium carboxymethyl starch, anhydrous sodium sulphate, starch and modified starch.
Preferably, the disintegrant is anhydrous sodium sulphate.
Preferably, the fabric care tablet is press formed.
Compared with the prior art, the invention can achieve the following technical effects: the inventor of the scheme innovatively finds that a certain amount of cellulase is added at one time, so that fluff and hair bulbs affecting the appearance of cotton fibers can be removed well at one time, the color recovery of the fabric is achieved, namely, the effect of 'renewing' the fabric is achieved, and meanwhile, the fabric cannot be additionally damaged; in addition, by adding the nonionic surfactant and other components, the removal of fluff and hair balls affecting the appearance of the cotton fibers can be further facilitated in a proper range, a synergistic effect is generated with the cellulase, the fabric renovation effect is improved, and the stability of the cellulase is not reduced; the fabric care tablet provided by the scheme can improve the stability of the cellulase, so that the cellulase can release activity in the washing process, exert efficacy and facilitate product storage and transportation.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with examples are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, but rather should be construed as broadly as the present invention is capable of modification in various respects, all without departing from the spirit and scope of the present invention.
The term "endoglucanase" refers to one of the cellulase systems, which is the main component of cellulase enzymes and which hydrolyzes cellulose into reducing oligosaccharides.
The term "β -endoglucanase" refers to a collective name for a number of enzymes that catalyze the hydrolysis of β -glucan.
The term "cellulase" refers to an enzyme system consisting of a plurality of hydrolytic enzymes, containing three components with different actions, the first being endoglucanases, which act on the amorphous regions of the cellulose fibers and randomly hydrolyze β -1, 4-glucosidic bonds, truncating the cellulose macromolecules, the second being exoglucanases, which act on the ends of linear molecules and hydrolyze β -1, 4-glucosidic bonds, each time cutting off a cellobiose, also known as cellobiohydrolases, the third being β -glucosidases, which hydrolyze cellobiose to glucose.
The term "cotton fiber" refers to seed fiber of cotton plant of Malvaceae, containing cellulose 80-90%, and is an important raw material in textile industry.
The term "crystalline region" refers to a region of cotton fibers in which the macromolecules are regularly aligned. As the macromolecules in the crystallization area are arranged neatly and compactly, and the binding force of each group with the molecules close to each other is basically saturated, the cotton fiber absorbs water more difficultly and has smaller deformation.
The term "amorphous region" or "amorphous region" means that the regions of the cotton fiber in which the macromolecules are irregularly arranged are amorphous regions (amorphous regions). The distance of groups on the surface of macromolecules in the amorphous region is large, complete saturation is not achieved, the strength is low, and moisture absorption, dyeing and deformation are easy to realize.
In particular, the fabric care tablet of the present invention is used in a washing machine for treating fabrics and rapidly releases an effective substance in a main wash cycle, and has a complete disintegration time of not more than 30 minutes, preferably not more than 20 minutes, preferably not more than 10 minutes, more preferably not more than 5 minutes.
The embodiment of the invention provides a fabric care tablet, which comprises the following components in percentage by mass:
300-2400U/g cellulase;
5-20% of a nonionic surfactant;
5-40% of hydrophilic silicon dioxide;
5-10% of a binder;
1-10% of water.
The components are described in detail below:
nonionic surfactant
The fabric care tablet provided by the embodiment of the invention contains 5-20% of nonionic surfactant per unit tablet.
In some embodiments, the nonionic surfactant is selected from a mixture of one or more of fatty alcohol ethyl/propoxylates, alkyl polyglycosides, fatty acid ethyl/propoxylates, fatty acid alkylolamides, and ethoxylated sorbitan esters.
The nonionic surfactant contains a fatty alcohol alkoxylate having the following general formula (1):
in the formula (1), n is 6 to 24; x is 0.5 to 30 and y is 0 to 10.
The fatty alcohol alkoxylate is a product of ring opening polymerization of fatty alcohol and alkylene oxide under the action of an alkaline catalyst, and therefore the fatty alcohol alkoxylate is a mixture. The fatty alcohol includes a straight chain alcohol or a branched chain isomeric alcohol. Alkoxy groups include ethoxy and propoxy groups. The fatty alcohol is preferably a fatty alcohol having a carbon number of 8 to 18, and the preferred alcohols include, but are not limited to, one of hexanol, octanol, decanol, 2-ethylhexanol, 3-propylheptanol, lauryl alcohol, isotridecyl alcohol, tridecyl alcohol, tetradecyl alcohol, cetyl alcohol, palmitoleyl alcohol, stearyl alcohol, isostearyl alcohol, oleyl alcohol, linoleyl alcohol, linolenyl alcohol, and mixtures thereof. The average degree of ethoxylation x is preferably from 2 to 12. Preferred examples are the NEODOL series of linear fatty alcohol ethoxylates products from SHELL, the ECOSURF EH series of ethoxylated and propoxylated 2-ethylhexanols products from DOW, the Lutensol XL series of ethoxylated and propoxylated 3-propylheptanols products from BASF and the Lutensol XP series of ethoxylated 3-propylheptanols products from BASF.
In some embodiments, the mixture of nonionic surfactants preferably comprises an alkyl polyglycoside having the following general formula (2):
in the formula (2), n is 6 to 24, p is 1.1 to 3, and preferably n is 8 to 16. In some embodiments, suitable alkyl polyglycosides are available from BASF corporation in the Glucopon series.
In some embodiments, the mixture of nonionic surfactants may contain fatty acid alkoxylates, preferably from ethoxylated C8 to C18 fatty acid esters, with an average degree of ethoxylation of 2 to 10. May contain an ethoxylated alkyl sorbitan ester having an alkyl carbon number of from 6 to 18 and an average degree of ethoxylation of from 4 to 20; a suitable example is the Corda Tween series of products.
In some embodiments, the mixture of nonionic surfactants may comprise fatty acid alkylolamides, the fatty acids having a carbon number of 6 to 24, and may be linear or branched fatty acids, and may be saturated or unsaturated fatty acids; the alkyl alcohol number is 0 to 2. Monoethanolamide, diethanolamide, isopropanolamide of fatty acids having a carbon number of 8 to 18 are preferred, a suitable example being coconut diethanolamide.
The nonionic surfactant mixture may contain fatty acid methyl ester ethoxylates of the general formula (3):
in the formula (3), n is 6 to 24; x is 2 to 20, preferably n is 8 to 18, x is 0.5 to 30. Preferably x is 4 to 10.
In some embodiments, the mixture of nonionic surfactants can contain a polyether surfactant. The polyether surfactant is a polymer, a nonionic surfactant containing ethylene oxide and/or propylene oxide repeating units, suitable examples being the Pluronic series from BASF.
Cellulase enzymes
The fabric care tablet provided by the embodiment of the invention has the advantages that each unit of the tablet contains 300-2400U/g of cellulase.
It is known that the activity of the cellulase is generally measured by a CMC (sodium carboxymethylcellulose) method, which measures the activity of cellulase by measuring the efficiency of releasing reducing sugars per unit time during the reaction of cellulase with a CMC substrate.
Specifically, the unit of cellulase activity of the present invention is U, and 1U is defined as the amount of cellulase required to produce 1 μmol of reducing sugar per minute in the process of determining cellulase activity by CMC method, and the activity determination in this process is performed under the conditions as shown in table 1 below:
TABLE 1 reaction Key conditions for cellulase Activity detection
The step of detecting the enzymatic activity of the cellulase by the CMC method is known to those skilled in the art, but the reaction parameters are published for the precise understanding of the invention by those skilled in the art, which are slightly different from one another according to specific reaction conditions.
The invention provides a method for evaluating fabric refreshing effect of a fabric care composition, which comprises the following steps:
for ease of understanding, the present invention is described in the process of the method using a commercial standard cotton cloth, available under the trade designation TEST 253, Serial Number 21-04 from EMPA Swissatest, all references or examples herein relating to the method using such standard cotton cloth unless otherwise specified, but it is expressly not intended that the method be applicable to only such standard cotton cloth, or that the fabric care composition screened by the method be applicable to only the fabric care of such standard cotton cloth.
In addition, in the process of discussing the fabric refreshing effect evaluation method, clear water is adopted as a comparative experimental group. It is clearly not intended that the present method of evaluation is not suitable for screening compositions containing surfactants, fabric care aids, detergency aids, bleaches, stabilisers, detergent solvents, pigments, perfumes and preservatives etc. and indeed the present method is equally suitable for screening compositions in the field of fabric washing.
The evaluation method can obtain the fabric care composition which has the capability of removing fluff and hair balls affecting the appearance of cotton fibers and does not cause excessive damage to cotton fabrics. The specific detection method comprises the following steps: the weight change and the fabric strength change of the cotton fabric after treatment are compared under the condition of eliminating the shedding of cotton fibers caused by mechanical force.
And (3) washing process:
the washing process can adopt a vertical decontamination machine meeting national standards or a commercial washing machine capable of controlling the temperature and water quantity, and specific brands can be but are not limited to Siemens, Heier, little swan, LG and the like. The evaluation method of the fabric care composition is suitable for evaluating the 'refreshing' effect of the composition to be tested on the cotton-containing fabric in single use, so the adding amount of the composition to be tested in the test process is not particularly limited, and the adding amount of the composition to be tested is not acceptable from a commercial perspective because the beneficial effect is generally improved without the addition of cost, so the adding amount of the composition in the test process is added according to the acceptable amount with commercial profit.
The specific operation of the method is described below, and when the method is discussed, the main washing time is 20 minutes, the main washing temperature is 40 ℃, the rinsing time is 5 minutes, the rinsing process is performed for 2 times, and hard water with 250ppm is adopted for natural air drying.
Evaluation procedure
Weighing the wet weight G of a piece of standard cloth in the same batchaAccurately measuring the dry weight G of the standard cloth by a drying method0Calculating the moisture regain W of the batch of standard cloth by the following formula:
weighing the standard cloth before treatment, and calculating the dry weight m according to the moisture regain calculated by the method0Accurately measuring the dry weight m of the treated product by a drying method1. The weight loss rate M of the face yarn is calculated according to the following formula:
determination of breaking Strength loss ratio of Cotton cloth
The tensile properties of the cotton before and after the treatment were tested according to the national standard "GB/T3923-1997" textile fabrics tensile properties part 1: bar test method for breaking strength and breaking elongation. The breaking strength loss rate S of the cotton cloth is calculated according to the following formula:
in the formula: s0-firstThe breaking strength (cN, centinewtons) of the cotton wool.
s1-breaking strength (cN) of cotton after treatment.
In the evaluation process, the fabric care composition to be tested is added as an experimental group, the experimental group needs to perform 5 parallel experiments, and the weight loss rate M of the experimental group is obtained by taking the average value1And breaking strength loss rate S1(ii) a Taking the fabric care composition not added to be tested as a control group, performing 5 parallel experiments on the control group, and taking an average value to obtain the weight loss ratio M of the control groupOAnd breaking strength loss rate S0，M1-MONamely the influence result of the fabric care composition to be tested on the weight loss of the fabric, which excludes the influence of mechanical force, S1-S0I.e. the result of the effect of the test fabric care composition on fabric strength excluding the effect of mechanical forces.
We unexpectedly found that when the difference between the weight loss ratio of the experimental group and the weight loss ratio of the control group is more than 0.5%, the color of the standard cotton cloth is apparently recovered to be bright, the standard cotton cloth has good renewing effect, and when the weight loss ratio of the breaking strength of the experimental group and the weight loss ratio of the breaking strength of the control group are less than 1%, the cotton cloth is apparently not obviously damaged.
Therefore, the fabric care composition to be tested, which has a weight loss rate greater than 0.5% compared with the control group and a breaking strength loss rate less than 1% compared with the control group, is evaluated as having a beneficial effect on the fabric.
It should be noted that, in the parameters of the method for evaluating the performance of the cellulase, the testing time is obviously not required to be 20 minutes, and can be 15 minutes or 40 minutes, which is generally used or acceptable by general consumers, and the testing temperature is obviously not required to be 40 ℃, and can be 50 ℃ or 60 ℃, which can be set by a general commercial washing machine or room temperature. The method can be modified by a person skilled in the art with the aid of a limited number of tests in the light of the method.
It will be appreciated by those skilled in the art that although the effective ingredient cellulase used in the examples of the present invention is a commercial enzyme readily available to those skilled in the art. It is apparent, however, that this is a preferred method and is not meant to limit the fabric care compositions of the present invention to commercial cellulases specifically for fabric care, other non-commercial microbial sources of cellulases are equally suitable for use in the present invention.
It will be appreciated by those skilled in the art that the present invention is equally applicable to β -endoglucanases which specifically hydrolyze amorphous regions of cotton fibers in a single multi-component enzyme system using cellulase the present invention is equally applicable to β -endoglucanase variants which have improved cotton fabric treatment by recombinant DNA technology or other techniques, and cellulase enzyme systems containing β -endoglucanase variants.
Hydrophilic silica
The fabric care tablet provided by the embodiment of the invention comprises 5-40% of hydrophilic silicon dioxide.
In the present invention, the hydrophilic silica is amorphous silica which has not been subjected to hydrophobic modification treatment, and is white fluffy powder in appearance, including fumed silica and precipitated silica, preferably precipitated silica. The larger the water absorption value of the hydrophilic silica is, the better the absorption forming effect on the liquid raw material is, so that the liquid nonionic surfactant in the composition can be better adsorbed. The liquid nonionic surfactant raw material in the invention refers to a surfactant raw material with flowability at 35 ℃, and comprises most nonionic surfactants. The hydrophilic silicas according to the invention preferably have a water absorption of greater than 2 ml/g.
Specifically, the water uptake value can be determined by dropping water into a defined amount of hydrophilic silica until the silica is sufficiently wet and no sagging is the end point of the test. The hydrophilic silica has an average particle diameter in the range of 5 μm to 30 μm. Silica having a small average particle diameter has a lower apparent density and a better tableting effect, but too small a particle diameter brings inconvenience in transportation and production. Therefore, the hydrophilic silica has an average particle diameter preferably in the range of 10 μm to 20 μm. Suitable hydrophilic silicas may be commercial products such as ZEODENT 165, ZEOFREE 5162, SIPERNAT622S, etc. from winning companies.
Specifically, the present inventors have found that too little amount of hydrophilic silica causes tablet shape failure due to the nonionic surfactant in a liquid state, and that too much amount of hydrophilic silica causes tablet shape failure, and that the tablet is brittle or fails to be shaped at all. Therefore, the hydrophilic silica needs to be used in a proper amount to achieve the desired tabletting effect.
In some embodiments, the ratio of hydrophilic silica amount to the nonionic surface activity is 1: 1 to 2: 1.
adjuvant component
In particular, the compositions of the present invention may include optional ingredients such as anti-redeposition and suspension agents, optical brighteners, bleaches, bleach activators, suds suppressors, thickeners, fillers, lubricants, disintegrants, binders, perfumes and colorants, which may be added in varying amounts to achieve the desired effect.
Adhesive agent
The fabric care tablet provided by the embodiment of the invention comprises 5-10% of a binder.
In some embodiments, the binder is selected from at least one of starch, phosphate ester, sulfate ester, gelatin, polyethylene glycol, polyvinylpyrrolidone, polyvinylpolypyrrolidone, and polyvinyl alcohol. Binders used in the examples of the present invention are polyethylene glycol, polyvinylpyrrolidone, polyvinylpolypyrrolidone or mixtures thereof.
In one embodiment, the binder is selected from the group consisting of starch, phosphate, sulfate, gelatin, and mixtures thereof.
In one embodiment, the binder is selected from the group consisting of polyvinylpyrrolidone, a mixture of polyvinylpolypyrrolidone and polyvinyl alcohol.
In one embodiment, the binder is selected from the group consisting of gelatin, polyethylene glycol, polyvinylpyrrolidone, polyvinylpolypyrrolidone, and a mixture of polyvinyl alcohols.
Defoaming agent
The fabric care tablet provided by the embodiment of the invention can comprise 0.1-2% of the defoaming agent.
In some embodiments, the defoamer is selected from at least one of polysiloxanes, polyether modified silicone oils, alcohols, fatty acids, fatty acid esters, phosphate esters, mineral oils, amides copolymers of ethylene oxide and propylene oxide.
For example, in one embodiment, the anti-foaming agent is a polysiloxane.
Disintegrating agent
The fabric care tablet provided by the embodiment of the invention can comprise 10-25% of disintegrant.
In some embodiments, disintegrants may be selected to ensure that the tablet dissolves rapidly to release the enzyme, allowing the enzyme formulation to perform a fabric care function. Any known disintegrant may be used, such as crospovidone (polyvinylpolypyrrolidone, PVPP), sodium carboxymethyl starch, anhydrous sodium sulphate, alginates, clays, natural starches, inorganic salts and modified starches such as sodium starch glycolate or cross-linked starch.
For example, in one embodiment, the disintegrant is anhydrous sodium sulfate.
In some embodiments, the bulking agent which may be selected for use in the present invention may be a starch, for example, a modified starch such as wheat starch, corn starch, potato starch, any of which may be in native form, pre-gelled form or partially pre-gelled form. Other binders/fillers suitable for use in the present invention include dextrins, maltodextrins, sugars (such as lactose, fructose, dextrose, glucose, sucrose, raffinose, trehalose, and maltose), and sugar alcohols such as sorbitol, mannitol, and inositol. Other binders and fillers suitable for use in tablets are acrylic polymers, latex and polyvinylpyrrolidone. Phosphates and sulfates may also serve as binders or fillers, for example, dibasic calcium phosphate, monocalcium phosphate, or calcium sulfate dihydrate. The compositions of the present invention may employ a combination of two or more binders and fillers. Other binders and fillers include carrageenan, gum arabic, guar gum, xanthan gum, locust bean gum, chitosan, gelatin, collagen, casein, polyaspartic acid and polyglutamic acid, and lactose, dextrose and dibasic calcium phosphate are preferred binders and fillers for the present invention in view of cost performance.
In some embodiments, the invention may employ anti-redeposition and suspension agents including homo-or co-polymeric polycarboxylic acids or their salts, polymers of this type including polyacrylates and maleic anhydride-acrylic acid copolymers, and copolymers of maleic anhydride with ethylene, methyl vinyl ether or methacrylic acid, maleic anhydride. These materials are generally used in amounts of about from 0.5% to 10% (wt%), more preferably from 0.75% to 8% (wt%), and most preferably from 1% to 6% (wt%) of the composition.
In some embodiments, optical brighteners which may be selected for use in the present invention are anionic.
In some embodiments, any particulate inorganic perhydrate bleach may be used in the present invention in an amount of from 3 to 40% (wt%), more preferably from 8 to 25% (wt%) and most preferably from 12 to 20% (wt%) of the composition. Examples of such compounds are preferred and sodium perborate tetrahydrate-hydrate bleaches, percarbonates, and mixtures thereof.
In some embodiments, fabric softeners that may be used in the present invention may be inorganic or organic in nature.
In some embodiments, the lubricants and glidants that may be selected for use in the present invention may be any agent that reduces surface friction, lubricates the surface of the tablet, reduces static electricity, or reduces the friability of the tablet. Lubricants and glidants may also be used as anti-agglomeration agents during tablet manufacture. Suitable lubricants include, but are not limited to, silica, silicon dioxide, talc, magnesium stearate, stearic acid, calcium stearate, sodium stearyl fumarate, and polyethylene glycol (PEG). The lubricants used in the examples of the present invention are magnesium stearate and polyethylene glycol.
In some embodiments, the present invention may select ingredients that enhance the experience, such as foaming combinations and flavors, for example by adding citric acid and sodium bicarbonate to the tablet, which may provide foaming when added to the liquid wash water, and those skilled in the art will recognize other combinations that may produce a phenomenon.
In some embodiments, flavors, fragrances, and colorants may be selected for use in the present invention. For example, the colorant may be a dye, and the amount added is generally 0.01% or less (w/w). The added pigment of the invention can be used as a mark to provide a recognizable mark for consumers.
In some embodiments, the invention may employ metal salts, antioxidants, enzyme protectors such as ammonium sulfate, ammonium citrate, urea, guanidine hydrochloride, guanidine carbonate, guanidine sulfonate, thiourea dioxide, monoethanolamine, diethanolamine, triethanolamine, amino acids such as glycine, sodium glutamate, etc., proteins such as bovine serum albumin, casein, etc.
Process for preparing enzyme tablets
The present invention may be prepared by directly compressing a mixture of the enzyme, filler/binder, lubricant, and any other optional ingredients into tablets. The enzyme component is thoroughly mixed with the other ingredients of the tablet and subsequently added to the tablet press. The ingredients are mixed in any suitable mixing device or any other mixing method that mixes the tablet ingredients is used. The mixture is then compressed into tablets using any tableting equipment, such as a tablet press. Tablet presses typically have punches of corresponding up and down shape that mate with the die both above and below the die. The blended tablet material is loaded into a die cavity and at least one punch, typically an upper punch, enters the die cavity. Pressure is applied to the upper and lower punches. The upper and lower punches are moved towards each other which applies pressure to the material between the punches thereby forming the tablets. A wide variety of tablet shapes can be prepared. The tablet shape is determined by the punch adjustment tool. The compression force varies depending on the punch geometry, the type of equipment, and the formulation applied. Typical compression forces may range from 0.2kN to 22 kN.
The preferred manufacturing method is as follows:
1) adding surfactant and water into the mixing tank, and stirring uniformly to obtain hair spray.
2) Adding the filler, the thickening agent and the disintegrating agent under stirring, and stirring uniformly;
3) adding an enzyme preparation, an anti-redeposition and suspension agent, an optical brightening agent, a bleaching activator, a foam inhibitor, a lubricant and an adhesive under stirring, and uniformly stirring;
4) adding flavoring agent and coloring agent under stirring, and stirring;
5) continuing to fully stir the materials in the dosing tank until no caking exists, and sieving the mixed materials by a sieve of 20 meshes to 80 meshes;
6) the tablets were pressed by an automatic punch, 4g to 20g per tablet.
Evaluation of fabric care effect of various compositions in the following examples evaluation of fabric refreshing effect was carried out by the above-described evaluation method of a fabric care composition according to the present invention.
Cellulase activity in various compositions of the examples the cellulase activity was determined as follows
1. Preparation of reagents
Determination of buffer: 0.05mol/L sodium acetate buffer, pH6.0
Weighing 4.1g of anhydrous sodium acetate into a 1L beaker according to the preparation of 1000mL, adding 900mL of deionized water, uniformly stirring by using a magnetic stirrer, adjusting the pH value to 6.0 by using glacial acetic acid, transferring into a 1000mL volumetric flask, fixing the volume by using the deionized water, and uniformly mixing.
Substrate: 1.5% (w/v) sodium carboxymethylcellulose (CMC)
According to the preparation of 100mL, about 80mL of sodium acetate buffer solution is added into a 150mL beaker, the buffer solution is heated to 50 ℃ by a heatable magnetic stirrer, 1.5g of CMC is weighed, the CMC is slowly added into the hot buffer solution while stirring, the heating is stopped, the stirring is continued until the CMC is completely dissolved, the CMC is cooled to the room temperature, the volume is 100mL by the sodium acetate buffer solution, and the CMC is fully mixed.
Reagent: 10% (w/v)3, 5-dinitrosalicylic acid solution (DNS)
According to the preparation of 200mL, 80mL of deionized water is added into a 200mL beaker, 2.0g of 3, 5-dinitrosalicylic acid is weighed, and the salicylic acid is added into the deionized water to be dissolved while stirring. Dissolving 3.2g of sodium hydroxide in 30mL of deionized water, uniformly mixing, slowly adding the sodium hydroxide solution into the 3, 5-dinitrosalicylic acid solution, heating to dissolve until the solution is clear, wherein the heating temperature is not higher than 50 ℃, slowly adding 60g of potassium sodium tartrate tetrahydrate into the clear mixed solution, stirring until the solution is dissolved, and fixing the volume to a volumetric flask of 200mL when the solution is recovered to the room temperature.
2. Preparation of Standard Curve
According to the possible enzyme activity of a sample to be detected, a sodium acetate buffer solution gradient dilution method is adopted to prepare the commercial standard cellulase or the cellulase with a raw material analysis report in the same batch into a standard curve working solution, the working solution at least comprises 5 gradient concentrations, and the linear correlation coefficient R of a linear regression standard solution curve drawn according to the standard curve is required to be more than or equal to 0.995.
3. Preparation of samples to be tested
Weighing 1g of sample, dissolving the sample by using 90mL of sodium acetate buffer solution, then fixing the volume in a 100mL volumetric flask, and properly diluting the sample solution so as to meet the effective range of a standard curve.
2. Measurement procedure
1) Preparing equipment for 50 ℃ water bath, boiling water bath and ice bath;
2) preparing 3 parallel samples for each sample, and simultaneously performing a blank experiment, namely each sample needs 4 test tubes;
3) 1.0mL of substrate CMC was pipetted into each tube;
4) preheating the test tube with the substrate in 50 deg.C water bath for 10 min;
5) sucking 1.0mL of sample solution into a corresponding test tube at a time interval of 15s, and uniformly mixing, wherein no sample solution is added into a blank test tube;
6) after 10min of reaction in a water bath at 50 ℃, 3.0mL of DNS reagent was added to the test tubes one by one at the same time intervals, and finally 3.0mL of DNS reagent was added to the test tube of the blank experiment as well, and all the test tubes were taken out of the water bath.
7) At this time, 1.0mL of sample solution is added into the test tube of the corresponding blank experiment;
8) placing all test tubes in boiling water bath, and boiling for 5 min;
9) all test tubes are taken out from the boiling water bath and put into an ice bath for 10 min;
10) taking out the test tube from the ice bath, and placing the test tube at room temperature to recover the room temperature;
11) the absorbance of each sample blank, replicate, was measured using a spectrophotometer at 540nm with deionized water to zero the absorbance. The average absorbance of the replicates was calculated and the absorbance of the blank was subtracted from this value to give the net absorbance.
12) And (3) calculating enzyme activity: sample enzyme activity (sample solution enzyme activity multiplied by dilution times multiplied by 100 mL/g)
Wherein: the enzyme activity of the sample solution, namely the enzyme activity of the solution participating in the reaction, is calculated by substituting the net absorbance into a standard curve equation, and the unit is U/mL;
dilution factor-the factor by which the sample is diluted in the effective range according with the standard curve when being prepared;
100mL/g, namely when a sample is dissolved, 1g of the sample is dissolved in 100mL of buffer solution to generate a dilution effect, a unit is reserved here, and a unit U/g of enzyme activity is obtained correctly after calculation.
Examples 1-3 and comparative examples 1-5 fabric care tablets were manufactured to a specification of 10 g/tablet using the manufacturing method described in the specification in the proportions shown in tables 2-4 below.
Table 2 fabric care tablet formulation ingredients of the examples
TABLE 3 Fabric care tablet composition of comparative example (1)
TABLE 4 Fabric care tablet composition of comparative example (2)
a: the Novoxil cellulase Carezyme;
b: dupont cellulase REVITALENZ 2000 XYF-11;
c: yueyangruikang biological cellulase LS-868.
After the tablets were punched in examples 1 to 3 and comparative examples 1 to 5, the enzyme activity was measured according to the above method, and a composition having no abnormality in the tablet state was selected and evaluated according to the above evaluation method of fabric refreshing effect, with the addition of 1 tablet and the tablet size of 10g, and the results were as follows:
TABLE 5 evaluation results of examples and comparative examples
The evaluation results of the comparative example 1 and the comparative example 4 show that the content of the cellulase plays a decisive role in the refreshing effect, the refreshing effect is not obvious when the activity of the cellulase is too low, and the fabric is greatly damaged when the activity of the cellulase is too high. The evaluation result of the comparative example 2 shows that the refreshing effect of the cotton-containing fabric is obviously reduced under the condition that the nonionic surfactant does not participate, and the comparative example 3 shows that the surfactant which is in a liquid state cannot be kept contained in the tablet in the tabletting process, so that the silicon dioxide with certain adsorption capacity plays an important role in tabletting forming and effective substance adsorption; the results of the analysis and comparison of the evaluation results of the example 1 and the comparative example 5 show that the anions have a significant negative effect on the refreshing effect of the cotton-containing fabric, and the nonionic surfactant has stronger compatibility with the cellulase.
The evaluation results of examples 1-3 and comparative examples 1-5 show that the combination of cellulase and nonionic surfactant has a synergistic effect on fabric refreshing, and can remove cotton fibers influencing the fabric beauty under the condition of small strength loss of the fabric, so that the fabric refreshing effect is achieved.
In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
While the invention has been described with reference to specific embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A fabric care tablet comprising, in mass percent, per unit tablet:
300-2400U/g cellulase;
5-20% of a nonionic surfactant;
5-40% of hydrophilic silicon dioxide;
5-10% of a binder;
1-10% of water.
2. The fabric care tablet of claim 1, wherein the nonionic surfactant is selected from one or more of the group consisting of fatty alcohol ethyl/propoxylate, alkyl polyglycoside, fatty acid ethyl/propoxylate, fatty acid alkylolamide, and ethoxylated sorbitan ester.
3. The fabric care tablet of claim 1, wherein the weight ratio of the hydrophilic silica to the nonionic surface active is from 1 to 2: 1.
4. The fabric care tablet of claim 1, wherein the hydrophilic silica has a water absorption value of greater than 2 ml/g.
5. The fabric care tablet of claim 1, wherein the binder is selected from at least one of starch, phosphate ester, sulfate ester, gelatin, polyethylene glycol, polyvinylpyrrolidone, polyvinylpolypyrrolidone, and polyvinyl alcohol.
6. A fabric care tablet according to claim 1, further comprising from 0.1 to 2% per unit tablet of an antifoaming agent.
7. The fabric care tablet of claim 6, wherein the antifoaming agent is at least one selected from the group consisting of polysiloxanes, polyether modified silicone oils, alcohols, fatty acids, fatty acid esters, phosphate esters, mineral oils, amides, copolymers of ethylene oxide and propylene oxide.
8. A fabric care tablet according to claim 1, further comprising 10-25% per unit tablet of a disintegrant.
9. The fabric care tablet of claim 8, wherein the disintegrant is selected from at least one of crospovidone, sodium carboxymethyl starch, anhydrous sodium sulphate, starch, and modified starch.
10. The fabric care tablet of any one of claims 1-9, wherein the fabric care tablet is press-formed.
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