JPH0129907B2 - - Google Patents

Description

[Detailed description of the invention]

TECHNICAL FIELD This invention relates generally to particulate solid fabric conditioning materials suitable for convenient application to fabrics during laundering operations. More particularly, the present invention relates to improvements in particulate solid fabric softening compositions that more easily disperse softeners into laundry rinse solutions. BACKGROUND ART U.S. Pat. No. 4,259,373 describes a fabric conditioning system in which a particulate solid fabric conditioning material is contained within a skin having a porous wall providing communication between the particulate composition and washing machine water. method. This is sometimes the preferred application system for fabric softeners for the reasons disclosed in said application. However, some fabric softening compositions are not efficiently applied to laundry rinse solutions using this and other application systems. This is because some softening materials, especially those in solid particulate form, are not easily dispersed in the rinse solution. This problem is particularly acute when cold water is used during the washing machine's rinse cycle where softening is to occur (this rinse cycle is the preferred stage at which the softener is transferred to the fabric). Since the cost of energy has increased greatly in recent years, it is of great importance today to provide fabric conditioning compositions that work well with cold water rinsing. Improvements in the dispersibility of particulate fabric softeners in cold water are needed if the need to reduce the energy costs of laundry is to be met. Several patents disclose or suggest that certain quaternary ammonium compounds, which are very useful in fabric softening, do not readily disperse in washing machine rinse water. U.S. Patent No. 3,356,526,
and US Pat. No. 3,573,091 each disclose the use of powdered carriers to render quaternary compounds water-dispersible. Said US Pat. No. 3,356,526 teaches practice using chloride analogs of ditallow dimethylammonium methyl sulfate. US Patent No.
No. 3,892,669 and U.S. Pat. No. 3,325,404 each disclose the use of ditalodimethylammonium methyl sulfate or other di(short chain) di(long chain) for solubilization in aqueous liquid fabric softening compositions. chain) discloses a solubilizer that can be used in combination with quaternary ammonium compounds. The following documents disclose liquid fabric softening compositions containing mixtures of softening ingredients in connection with the present invention: US Pat. U.S. Pat. No. 3,349,033 discloses softeners (6%) such as ditallow dimethylammonium methyl sulfate and microbial control agents (2%).
%), for example, dodecyl or hexadecyltrimethylammonium chloride. US Patent No.
No. 3904533 contains, for example, ditallow dimethylammonium methyl sulfate (or one of many other congeners) as well as myristyltrimethylammonium bromide (or one of many other congeners) as a low temperature stabilizer. A liquid fabric softener is disclosed. U.S. Pat. No. 3,329,609 describes 20 general substances that include within its definition ditallow dimethyl ammonium methyl sulfate.
% to 80%; 5% to 10% of a substance such as myristyltrimethylammonium bromide; and 80% to 20% of a salt of hydrofluorosilicic acid. In column 4, this document points out that large amounts of inert fillers can be added to the composition, and further points out that the composition can be formulated together in the form of dry ingredients. The only implication of this document is that the composition is a solid material. Summary of the Invention The present invention provides the following formula from about 60% to about 85% of the first compound having the formula is a solid eutectic particulate fabric softening composition that is freely dispersible in the cold water rinse of a washing machine, consisting of about 15% to 40% of a second compound having (unless otherwise indicated)
All percentages are by weight). In the above formula, R ₁ , R ₂ , R ₅ , R ₆ and R ₇ are lower alkyl groups, each preferably selected from the group consisting of methyl, ethyl and propyl, each most preferably methyl. It is. R ₃ and R ₄ are each a higher alkyl or alkenyl group having about 14 to about 22 carbon atoms, each preferably consisting of tallow cut, each more preferably about 14 to about 18 carbon atoms, and most preferably about 16~
Consisting of one or more aliphatic hydrocarbon residues having about 18 aliphatic hydrocarbon residues. R ₈ is an alkyl or alkenyl group having from about 10 to about 14 carbon atoms, preferably coconut alkyl groups, mainly dodecyl and myristyl groups, most preferably myristyl (C ₁₄ ) groups. X and Y are anions associated with the quaternary ammonium compounds of the present invention. As will be apparent to those skilled in the art, X and Y can be a wide range of anions that do not interfere with the utility of the composition. In a preferred embodiment of the invention, X and Y are selected from the following anions: chlorine, bromine, iodine, fluorine, acetate, phosphate, nitrite, methylsulfate, ethylsulfate or nitrate. In the most preferred embodiment of the invention, X is methyl sulfate and Y is bromine. Optionally incorporated ingredients (described below) may also be present in the compositions of the invention, but the resulting composition must be a particulate solid. An advantage of certain softening compositions of the present invention over conventional ones is that they maximize the usage of softeners while providing the most effective softeners with improved dispersibility, especially in cold water. Description of Preferred Specific Examples Preferred specific examples of the present invention will be described below.
It will be understood that any description of preferred embodiments or specific examples is intended to be illustrative of the invention and not limiting. To explain certain terms used herein, the following definitions are provided. By "fabric softener" agent or composition is meant an agent or composition that adheres to fabrics and softens, lubricates, or reduces the buildup of static electricity on applied fabrics. Materials of this type typically range from about 20°C to about 115°C, preferably from about 30°C to
It has a melting point in the range of about 68°C. The fabric softener of the present invention is a cationic quaternary ammonium compound described below. A solid eutectic particulate material is said to be "water dispersible" if it can be dispersed throughout the water of a washing machine's rinse cycle with mechanical agitation no greater than that provided by a washing machine. In a composition contained within a receptacle,
Water dispersibility is such that when the container comes into contact with rinse water, the composition escapes from the container during a normal washing machine rinse cycle. Water dispersibility can be measured directly by measuring the amount of material dispersed during a test cycle, or the extent to which fabrics with a fabric softener are softened (dispersed fabrics in laundry rinse liquor) (indicative of the presence of the agent). The solid eutectic particulate compositions of the present invention are eutectic and then flaked or spray dried using conventional methods. It has been discovered that eutectics are superior to dry mixed materials. It is therefore important to produce the compositions of the invention by eutectic. The present invention is based on the following formula from about 60% to about 85%, preferably from about 70% to about 80%, most preferably about 75%, and having the formula from about 15% to about 40%, preferably from about 20% to about 30%, most preferably about 25%, having a second compound having have meaning). In the following, the individual components mentioned above, the mixtures of these components for preparing the fabric conditioning active mixture, the components optionally combined to complete the commercial composition, and finally the preferred application systems. details. Di-(Long Chain) Quaternary Ammonium Compound The first component of fabric softening compositions within the scope of the present invention is a di-(long chain) quaternary ammonium component.
The formula for this component is as follows. In the above formula, each of R ₁ and R ₂ is a lower alkyl group. As used herein, "lower alkyl"
represents a substituent having 1, 2 or 3 carbon atoms. This also includes substituents containing atoms other than hydrogen or carbon. For example, a lower alkyl substituent can be a hydroxyalkyl substituent. Other substituents that may be used within the definition of "lower alkyl" are methyl, ethyl and propyl groups. Among these, methyl groups are most preferred as R ₁ and R ₂ substituents. In the above formula, R ₃ and R ₄ are each an alkyl group having from about 14 to about 22 carbon atoms in the aliphatic configuration.
In a preferred embodiment of the invention, R ₃ and
The R ₄ group can be tallow cut, ie alkyl and alkenyl residues of tallow fatty acids. According to The Merck Index, 9th edition, entry 8820, the main tallow fatty acids are oleic acid, palmitic acid, stearic acid, myristic acid and linolenic acid. Tallow also contains trace components such as cholesterol, arachidonic acid, elaidic acid and vaccenic acid. More preferred for use in the present invention are alkyl groups having from about 14 to about 18 carbon atoms. The most preferred R ₃ and R ₄ groups have a carbon number of about
Alkyl groups having from 16 to about 18, these are the main components found in tallow cutlets. X is an anion. As is well known to those skilled in the art,
There is often little difference in the use of different anions in a given quaternary ammonium compound used as a softener. The anion may be any suitable anion known in the art, such as chlorine, bromine,
selected from fluorine, iodine, acetate, phosphate, nitrite, methylsulfate, ethylsulfate and nitrate anions (or equivalents thereof). For di-(long chain) substituents, the most preferred anion is the methyl sulfate anion. A number of examples of di-(long chain) quaternary ammonium compounds that can be used in the practice of this invention are as follows. ditallow dimethyl ammonium chloride; ditallow dimethyl ammonium methyl sulfate; dihexadecyl dimethyl ammonium chloride; di(hydrogenated tallow) dimethyl ammonium chloride; dioctadecyl dimethyl ammonium chloride; dieicosyl dimethyl ammonium chloride; didocosyl dimethyl ammonium chloride ; di(hydrogenated tallow)dimethylammonium methylsulfate; dihexadecyldiethylammonium chloride; dihexadecyldiethylammonium methylsulfate; dihexadecyldimethylammonium acetate; ditallow dipropylammonium phosphate; and ditallow dimethyl ammonium nitrate . Mono-(Long Chain) Quaternary Ammonium Compound The second major component of the novel fabric softening composition of the present invention is a quaternary ammonium compound having the formula: In this compound R ₅ , R ₆ and R ₇ are lower alkyl groups as defined above. R ₅ , R ₆ and
R ₇ is independently selected and preferably selected from the group consisting of methyl, ethyl, and propyl groups. Each of R ₅ , R ₆ and R ₇ is preferably a methyl group. R ₈ is a single long chain substituent of a mono-(long chain) quaternary ammonium compound. R ₈ is most broadly selected from the alkyl and alkenyl groups of one or more coconut fatty acids (or chemical equivalents derived from other sources) (coconut cutlets). Coconut cutlets have a chain length of about 8 to about 18 carbon atoms, but the main component has a chain length of about 12 to about 14 carbon atoms. It is the latter that is believed to provide the benefits of the present invention. In a preferred embodiment of the invention, R ₈ has 10 to 14 carbon atoms.
, such as decyl, undecyl, dodecyl, tridecyl or tetradecyl groups, or unsaturated analogues of these alkyl groups. The most preferred long chain substituents of this compound are tetradecyl or myristyl. The anion Y in the above formula is an anion suitable for use in conjunction with a quaternary ammonium compound used as a softener. Particular anions useful in the present invention are those described for di-(long chain) quaternary ammonium compounds. Examples of fully mono-(long chain) quaternary ammonium compounds useful in the present invention are as follows. Coconut trimethylammonium bromide; myristyltrimethylammonium bromide; myristyltrimethylammonium bromide; decyltrimethylammonium bromide; and dodecyltrimethylammonium bromide. Complete Fabric Softening Formulations It will be appreciated that the fabric softening compositions of the present invention may be formulated from only di-(long chain) and mono-(long chain) components in the proportions described above. Dew. However, certain ingredients can optionally be added to the composition to accomplish various purposes. In a preferred embodiment of the invention, the fabric softening composition is in the form of a free-flowing powder. Various fillers can be added to the composition if necessary to facilitate the manufacture of this type of powder. Fillers of this type are inorganic compounds such as sodium sulfate, calcium carbonate, aluminum oxide, and smectite clays or organic compounds such as high molecular weight polyethylene glycols. Smectite clay and aluminum oxide are preferred fillers for use in the present invention. A description of smectites is found in US Pat. No. 3,862,058. When present, fillers can be present in amounts ranging from 5 to 25% by weight of the fabric softening composition. The fabric softening compositions of the present invention may also be used in trace amounts (i.e.,
Various other ingredients may optionally be included (from 0.1% to about 15% by weight of the total). Ingredients of this type that may be added include, for example, fragrances, bleaching agents, fumigants,
These include bactericides, fungicides, optical brighteners, etc. Specific examples of typical solid water-soluble additives useful in the present invention are found in the publication Year Book of the American Association of Textile Chemistry and Colorists. Additional ingredients of this type are selected from compounds known to be compatible with the fabric softeners used in the invention, or to coat them with water-soluble coatings, such as solid soaps. Therefore, it can be made compatible with the fabric softener of the present invention. Preferred optionally incorporated ingredients are fabric direct perfumes with a melting point higher than 38°C, such as musk ambrette, musk ketone, musk xylene,
Ethyl vanillin, musktivetin, coumarin, aurantiol, or mixtures thereof.
These fragrances can be added directly to the fabric conditioning agent or can be encapsulated in a mixture of polyvinyl acetate and sodium alginate. Approximately 0.1
~5% by weight of perfume is preferably added to the fabric softening composition. Other optional ingredients useful in the present invention are inorganic peroxides, such as alkali metal and ammonium perborates, percarbonates, monopersulfates, and monoperphosphates. Also useful in the present invention are solid water-soluble organic peroxides having the formula: (wherein R is a substituted or unsubstituted alkyl, alkylene or arylene group having from 1 to about 14 carbon atoms, M is an alkali metal or hydrogen, and Y is

【formula】

【formula】

[formula] or other groups that produce anionic groups in aqueous solution) Many of these bleaches are described in U.S. Pat.
It is detailed in the specification of No. 3749673. Water-soluble silicate compounds recognized in the art as corrosion inhibitors can be used in the present compositions in amounts up to about 5% by weight. Also, a release aid in the form of an electrolyte (release
(eg CaCl ₂ ) or non-ionic surfactants may also be advantageously used in the present invention. The optional ingredients should generally be added by dry mixing after drying the eutectic. It will be appreciated that the optional ingredients described above are provided in solid particulate form that can be dispensed onto fabrics at the same time as the fabric softener to provide desired additional fabric treatment effects. There will be. Preferred Application Methods As mentioned above, the fabric softening composition of the present invention comprises:
It is applied to the fabric by placing a predetermined amount of the desired composition with the fabric to be treated within a porous shell that is placed into the washing machine during the rinse cycle of a laundry operation. Specific descriptions of dispensers suitable for this purpose follow. The container that releasably holds the fabric softening composition of the present invention is preferably a closed flexible article having at least one porous wall consisting of an inner layer and an outer layer. Since the container is used inside an automatic cloth washer,
It should consist of water-insoluble substances. The container is therefore made from natural or synthetic materials that meet the above requirements. The porous walls are made from woven, non-woven or foamed materials. In certain containers preferred for use in the present invention, the inner layer of the wall of the porous container is a resilient open cell foam. Open-cell foams are distinguished from closed-cell foams, in that closed-cell structures consist essentially of separate individual cells, whereas in open-cell structures most adjacent cells are in communication and, under certain conditions, can become fluid. form an open matrix that allows the passage of Open cell foams are made from polystyrene, polyurethane, polyethylene, polyvinyl chloride, cellulose acetate, phenol-formaldehyde and other materials such as cellular rubber. These materials and their preparation are disclosed in standard texts, such as Encyclopedia of Polymer Science and Technology, Interscience Publications, John Willey & Sons, Inc. (1965). has been done. In other preferred embodiments, elastic nonwoven materials can be used as the inner layer material for the porous walls of the container.
The preferred nonwoven material used for the inner layer is a bonded fiber carded web (if the fiber strength is suitable for carding) or a fibrous batt with randomly distributed fibers. The fibers or filaments can be natural materials, such as wool, silk, jute, hemp, cotton, linen, sisal or ramie, or synthetic materials, such as rayon, cellulose esters, polyvinyl derivatives, polyolefins, polyamides, or polyesters. can. Preferred materials are, for example, polyesters, polyamides, polyolefins, and polyvinyl derivatives and mixtures thereof with rayon or cotton to obtain the desired elasticity. The method of manufacturing the nonwoven material is not part of this invention;
It will not be described in detail. Generally, however, materials of this type are made by air-laying or water-laying or spin-bonding methods. These methods are well known to those skilled in the art of nonwoven webs. The rate of dispersion of the fabric conditioning composition is primarily controlled by the outer layer of the article, while the inner layer of the container maintains the shape of the container and somewhat controls the release of the fabric conditioning composition. Particularly preferred materials for use as the inner layer of the dispensing article are those made from open-pore polyurethane foam or spinbond nonwoven materials, especially polyester. The polyurethane foam preferably has a density of about 0.02 g/cm ³ to about 0.04 g/cm ³ , while the polyester nonwoven material preferably has a density of about 0.005 g/cm 3 .
cm ³ to about 0.02 g/cm ³ . The thickness of this layer can vary depending on the release characteristics desired by the manufacturer, but preferably in the case of polyurethane about
0.2 cm to about 2.0 cm, and in the case of polyester, about 0.2 cm to about 2.0 cm. The preferred outer layer of the container is a moderately porous fabric. The fabrics can be made from the aforementioned woven or non-woven materials meeting the above requirements, but are generally non-woven materials made from polyester, polypropylene or a mixture of polyester and rayon or cotton. The outer layer generally has a lower porosity than the inner layer. The containers used in the present invention provide controlled release of the fabric conditioning composition during the rinse cycle of an automatic washing machine. Provides more efficient release than double-layer containers or single-layer containers,
The outer layer, on the other hand, stains and discolors less than the inner layer, thus providing a more aesthetically pleasing product. Additionally, the two-layer construction ensures that staining of the fabric is minimized by not removing large amounts of fabric conditioning composition at once. When manufacturing the article, the rate of withdrawal of the fabric softening composition from the container is preferably optimized by selecting a suitable container for the particular fabric softening composition. The rate of withdrawal of the fabric softening composition depends on the porosity of the layered walls of the container and the physical properties of the fabric softening composition. Containers can be made in a variety of sizes and shapes, and the particular arrangement of containers is not critical to the invention. For example, the container can be provided with a single wall or a portion of a wall that is a bilayer porous structure through which the fabric softening composition is dispensed. Preferably, the entire envelope of the container consists of a double layer porous material. The fabric conditioning container is made as follows. First, create a bag with one open end. This can be done by placing the sheets of the inner and outer layers one on top of the other (so that the two inner layers are placed between the two outer layers) and then forming a heat-sealed point-bonded lip, for example, to cover most of the periphery of the bag. This is done by sealing the This bag can be filled with fabric softener. Second, an effective amount of the fabric softening composition is placed between the two inner layers of the open bag made by the first step above. An "effective" amount of fabric softening composition is an amount sufficient to condition an average load of fabrics in an automatic washing machine. Of course, the actual amount of fabric softening composition used will depend on the fabric load and the type of fabric softening composition used in the container.
If the fabric load is on average 2 to 4 kg, approximately 4 to 12 g of the fabric softening composition will give good fabric softening results. After the fabric softening composition is introduced into the bag through the bag opening, the remaining bag periphery is sealed, such as in a pattern of heat-sealed point bonds, to complete the container. Uses of Fabric Softening Articles The articles of the present invention may be utilized in a variety of ways depending on consumer demand. In one method, an article made as described herein is placed in a washing machine with a load of fabrics at the beginning of a rinse cycle and left with the fabrics during the machine's rinse and spin dry cycles. Rinse water can be supplied at any temperature desired by the user, but generally from about 4°C to
Select to have a temperature of approximately 60°C. Once the washer has completed its cycle and stopped, remove and discard the used fabric softening article. Alternatively, the bag can be left with the load during the drying cycle, after which it can be easily located and separated from the laundered fabric.
The dryer is operated in a standard manner for drying fabrics, typically from about 50°C to about
Operate at a temperature of 50 ° C for about 10 to about 60 minutes. When used as described above, the performance obtained by the containers described herein is essentially equivalent to that of rinse-added liquid softeners with respect to softening. The invention will be further illustrated by the following examples. Examples 1-6 These examples demonstrate that adding a mono-(long-chain) quaternary ammonium compound to a di-(long-chain) quaternary ammonium compound in a particulate composition increases the water dispersibility of the latter compound. prove that. The mono-(long chain) quaternary ammonium compound selected for use was myristyltrimethylammonium bromide (MTMAB).
The di-(long chain) quaternary ammonium fabric softener selected for use was ditallow dimethyl ammonium methyl sulfate (DTDMAMS). These materials were eutectic and mixed together by stirring in the proportions shown in the table below. DTDMAMS was heated on a steam or water bath until melted, then MTMAB (trade name MyTAB) was added with stirring. 5%～
10% ethanol (95%) was added to reduce the viscosity of the eutectic and facilitate pumping and spray drying. The eutectic softener was then sprayed into droplets through a fine nozzle and allowed to solidify to form an overall granular composition. Next, a double-walled bag was made. The outer wall of the bag is
Basis weight 20 available from I du Pont de Numes End Company, Inc.
g/square yard (24 g/m ² ) SONTARA nonwoven polyester fabric.
The interior walls of the bag were made from BONDAIRE FIBERFILL non-woven polyester material available from G.P. Stevens Company. 7 cm of each material such that the bottom and top pieces of the stack are the material that is going to form the outer wall of the bag, and the two center pieces in the stack are the material that is going to form the inner wall of the bag. Small pieces of ×6 cm were stacked. The stack was sealed together to form an open bag by heat sealing the stack together around three circumferences. 6.0 g of the composition to be tested was placed between opposing inner layers of one open bag, and the bags were closed along their opening to complete their construction. Each bag was placed into a washing machine containing a laundry load at the beginning of the washing machine's rinse cycle. The temperature of the introduced rinse water was approximately 50°C (10°C). After stopping the washing machine, the bag was removed and extracted with a 50:50 mixture of methanol and chloroform. The solvent was removed from the extract and the weight of the residue was determined (extraction and measurement techniques are described below). Calculate the difference between this final weight and the initial 6.0 g charge to determine the weight of the material dispersed in the water in the washing machine. The dispersed weight of the material was then compared to the weight of the material originally placed in the bag to determine what percentage of the original bag contents remained in the bag as insoluble residue.
The results of this test are shown in the table below as % residue for compositions containing the following proportions of each starting material.

Table Examples 7-12 These examples seek to compare the softening performance of various compositions when applied to laundry loads within the rinse cycle of a washing machine as described with respect to Examples 1-6 above. It is something to do. Bags were made as described above and each bag was filled with 6g of one of the substances listed in the table below. The bag was then sealed to form the complete article. Each bag was placed in the washer along with a standard load of laundry containing four test terry towels made from 86% cotton and 14% polyester (pre-stripping the towels in organic solvent to prevent test results). (removed fabric finish or fabric softener residue). The bag was placed in the washing machine at the beginning of the rinse cycle. In another group of tests, the respective rinse water temperatures were 50〓 (10°C) and 90〓 (32°C). The test terry towels were then paired with equivalent towels that had been washed with DOWNY, a water-dispersible liquid fabric softener manufactured and sold by The Procter & Gambling Company and its subsidiaries. A pair of towels classified by grade. Pairs of each grade were mechanically compared by a panel of three experts to determine the relative softness of the towel pairs. The difference in flexibility between towels is 0~
Recorded on a scale of 4. 0 represented a no difference rating, 4 a large difference rating, and intermediate ratings sometimes represented a moderate difference. The flexibility ratings were then statistically combined with a single result for each test. A positive flexibility rating in the table below indicates a performance that is better than that of DOWNY, while a negative flexibility rating indicates the opposite result.

[Table] Bromide

[Table] Ammonium methyl sulfate 75
%: Myristil trimethylammonium bromide 25%
Determination of Cationic Surfactant Residue The following describes the procedure used to determine the residual amount of cationic material found in the bags of Examples 1-6 above. The method described here is based on "Determination of anionically active detergents by two-phase titration" by Ride et al., Tenside4,
This is a modification of the anionic surfactant titration method described in 1967, pp. 292-304. To determine the residual quaternary ammonium softener in the bags of Examples 1-6 after being used in a laundry operation,
The following operations were used. 1 First, Hyamine 1622
A 0.004N solution was prepared. Hyamine 1622 is obtained from Rohm & Haas Company. 2 of reagent grade linear alkylbenzene sulfonate (LAS) with alkyl chain length 11.8.
A 0.004N solution was prepared. This LAS solution was used in place of the sodium lauryl sulfate reagent described on page 302 of Tenside, supra. 3. The residual quaternary ammonium softener was extracted from the reagent bag. This was done by cutting the bag and residue into small pieces, placing the pieces into a flask, and adding 250.0 ml of methanol and 250.0 ml of chloroform to the flask. A magnetic stir bar was placed in the flask, the flask was stoppered, and the contents of the flask were stirred at room temperature for 2-4 hours by moving the magnetic stir bar in a magnetic stirring operation. 4 A titration solution was prepared. For this, 10 ml of solution
was removed from the stirred flask from step 3, the methanol and chloroform were evaporated, and the dry contents were quantitatively transferred to a 100 ml graduated cylinder with 20-30 ml of chloroform. 5 An indicator solution was prepared. A suitable indicator is described in Tenside, supra, pages 302-303 (8.3 g solution). 6. 10 ml of indicator solution and 10 ml of distilled water were added to the graduated cylinder containing the titration liquid. 7. The liquid was titrated with LAS solution until the bottom layer turned pink. The number of ml of LAS solution was recorded. 8 The liquid was then titrated with hyamine solution until the bottom layer turned gray. The amount of Hyamine solution used (ml) was recorded. The gray bottom layer is the end point of the titration. 9 Next, the weight of the residual quaternary ammonium softener in the bag was calculated from the following formula. V = 500ml a = 10ml MW = average molecular weight of the two components of the initial quaternary ammonium softener mixture Q = amount of quaternary ammonium softener (g) B = amount of LAS solution used (ml) T = Hyamine solution Usage amount (ml) Q=[B×N ₁ −T×N ₂ ]V×MW/1000a N ₁ = Normality of LAS N ₂ = Normality of Hyamine

Claims (1)

[Claims] 1 (A) The following formula (In the formula, R ₁ and R ₂ are lower alkyl groups,
R ₃ and R ₄ are each a higher alkyl or alkenyl group having about 14 to about 22 carbon atoms, and X is an anion)
60% to 85%, and (B) (wherein R ₅ , R ₆ and R ₇ are each a lower alkyl group, R ₈ is an alkyl or alkenyl group having about 10 to about 14 carbon atoms, and Y
is an anion) from 15% to
A solid eutectic granular fabric softening composition comprising 40%. 2. The composition of claim 1, wherein the _R5 , _R6 and _R7 groups are separately selected from the group consisting of methyl, ethyl and propyl groups. 3 The above R ₁ group and R ₂ group are separately methyl group,
A composition according to claim 2, wherein the composition is selected from the group consisting of ethyl and propyl groups. 4. The composition according to claim 3, wherein the R ₃ and R ₄ groups are alkyl groups. 5 X and Y are separately chlorine, bromine, fluorine, iodine, acetate, phosphate, nitrite,
5. The composition of claim 4, wherein the anion is selected from the group consisting of methyl sulfate, ethyl sulfate and nitrate anions. 6. The composition according to claim 5, wherein the R ₈ group is an alkyl group. 7. The composition according to claim 6, wherein the R ₈ group is a myristyl group. 8. The composition according to claim 7, wherein each of the R ₁ group, R ₂ group, R ₅ group, R ₆ group and R ₇ group is a methyl group. 9. Claim 8, wherein X is a methyl sulfate anion and Y is a bromine anion.
The composition described in Section. 10. The composition of claim 1, comprising about 70% to about 80% of said first compound and about 20% to about 30% of said second compound. 11. The composition of claim 10, comprising about 75% of said first compound and about 25% of said second compound.