JPH026663A - Fabric softening composition - Google Patents

Abstract

PURPOSE: To obtain a concentrated compsn. which can be easily diluted with water to standard concn. and viscosity by blending a specified soft cationic softening agent, specified alcohol and aq. matrix in specified proportions. CONSTITUTION: The softening compsn. is prepared by blending (A) a soft cationic fabric softening agent containing no branched alkyl derivs., (B) monovalent or divalent 1-5C alcohol soluble in water, and (C) aq. matrix, in the proportions of >=15 wt.% (A) and >=20 wt.% (B) to the total weight of the compsn. The compsn. can be easily diluted with tap water into standard concn., thereby obtaining a fabric softening agent having 20 cps viscosity. As for the cationic softening agent, die-soft animal fat-dimethylammonium chloride is preferably used.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides fabric softening compositions, particularly fabric softening compositions which can be easily diluted to form standard concentrations, i.e., 1.0-6.0% by weight of softener, and which contain at least 20% Concentrated textile softening compositions that determine the viscosity of senbuboaz Recently, concentrated textile softening compositions that are concentrated to three times the standard concentration have become commercially available.

These products are used directly during washing without prior dilution. The emergence of such products is not only convenient for consumers, but also reduces packaging and distribution costs for manufacturers.

Compositions that are three times more concentrated have also been made, but problems arise when such compositions are used directly during laundry. First, the amount of product required to process a standard load of laundry is so small that the product remains in the weighing device as a residue unless a special measuring device, which is not a traditional measuring cup, is used. will be wasted. Furthermore, when the liquid is put into a dispenser chamber provided in an automatic washing machine, a viscous gel may be formed together with the water remaining in the dispenser chamber, causing clogging.

These problems associated with concentrated fabric softening compositions are such that the consumer must dilute the composition to a standard strength product before use and then use it in the normal manner. If possible, the problem can be solved while maintaining the effects of reducing packaging costs and distribution costs.

French Patent No. 2540901 (Elf/Cec
The concentrated fabric softening composition disclosed in a) contains 50%
It contains a cationic softener based on hardened tallow, a hydrophilic derivative such as isopropanol, and additives such as a lipophilic solubilizing agent, a nonionic emulsifier, and a fragrance.

French Patent No. 2482636 (1, esieur
The concentrated fabric softening composition disclosed in Cotelle (1999) includes a cationic softener, a nonionic stabilizer or emulsifier, and a solvent. This composition can be diluted with tap water to produce a standard concentration product, and by packaging the concentrated composition in plastic bags, packaging and distribution costs can be reduced. The consumer transfers the contents of the bag into an empty bottle, such as an empty textile conditioner bottle, and dilutes it with tap water.

The present inventors have developed a concentrated fabric softening composition that has useful rheological properties such that it can be easily diluted with water to give a standard strength composition. We have discovered the surprising fact that fabric softeners can be produced without the use of a certain type of soft cationic fabric softener and lower alcohols.

The concentrated fabric softening composition provided by the present invention comprises (i) a soft cationic fabric softener substantially free of alkyl branched chain derivatives; and (ii) a water-compatible C-C5 a monohydric or dihydric alcohol; (iii) an aqueous base; at least 15% by weight of (i) based on the total weight of the components (i), (ii), and (iii) above; ) containing at least 28% by weight.

When used, the compositions of the present invention are typically diluted with 3 to 10 volumes of tap water to form a standard strength diluted fabric softening composition. When the dilute fabric softening composition contains 6% cationic fabric softener, it is desirable to have a viscosity of at least 20 Zendipoise.

As used herein, the term "soft 1~" shall mean that the cationic fabric softener contains at least one unsaturated alkyl chain and has an iodine number of 20-60.

Also, as used herein, the expression "contains substantially alkyl branched chain derivatives" refers to the fact that the alkyl branched chain derivatives present in the soft cationic fabric softener are soft Monodozuru means less than 0.5% by weight based on the Eiffi of the cationic fabric softener.

Concentrated fabric softening compositions can also be made with minimum concentrations of water less than 28%. However, if the solvent content increases as a result of reducing the water content of the composition, the composition will be more expensive to manufacture and, depending on the type of solvent, may have a lower flash point or
In other words, the temperature at which the composition ignites may drop to a dangerous level. Furthermore, when such compositions are diluted to a composition containing 6% cationic fabric softener, the problem arises that the viscosity of the product is too low, below 20 centipoise.

Soft cationic fabric softeners have at least one unsaturated alkyl long chain, have a solubility in water of pH 2, 5, and 20°C of less than 10 parts/ρ, and can be used directly on fibers. Any water-insoluble cationic compound that can be used can be used. Particularly preferred materials are optionally Ichigo, -Q-
, -CONH-, -COO-, etc., each having one saturated or unsaturated alkyl chain of 012' to .C24 and one unsaturated alkyl chain of C12 to C24 substituted with or having between them It is a tetraammonium salt.

A well-known class of substantially water-insoluble quaternary ammorum compounds are those having the formula:

As a material, alkylimidazolinium salts that are considered to have the following formula can be mentioned.

In the formula, R1 is a saturated or unsaturated hydrononorbyl group containing about 12 to 24 carbon atoms, and R2 is a saturated or unsaturated hydrononorbyl group containing about 12 to 24 carbon atoms.
to 24 unsaturated hyde]]carbyl groups, R3 and R
4 is a hydrocarbyl group C containing 1 to 711 carbon atoms
and X is an anion, preferably selected from halide, methyl sulfate, and ethyl sulfate radical. A preferred quaternary ammonium softener is di-soft tallow-dimethylammonium chloride.

R6 in the J1 water-soluble cation formula is an alkyl group or hydroxyalkyl group containing 1 to 4 carbon atoms, preferably 1 to 2 carbon atoms, and R7 is a carbon atom, although it is not as suitable as the above. Alkyl group or alkenyl group containing 8 to 25, R8
is an alkyl group or alkenyl group containing 8 to 25 carbon atoms, R9 is an alkyl group containing 1 to 4 carbon atoms or hydrogen, and A is an anion, preferably halide, methosulfate or ethosulfate. A preferred imidazolinium salt is 3-methyl-1-(2-tallow acylamido)ethyl-2-tallow alkylimidazolinium metsulfurinium 1-.

Preferred concentrations of soft cationic fabric softener range from 36% to 51%, most preferably based on the total weight of the soft cationic fabric softener, water-compatible alcohol, and aqueous base. ranges from 39% to 45%.

As mono- or dihydric alcohols which are compatible with water, any alcohol with a straight or branched chain of hydrocarbons containing not more than 5 carbon atoms, such as methanol, ethanol, isopropanol, dipropanol, etc. tools, butanol, pentanol, ethylene glycol,
Propylene glycol or butylene glycol can be used. You can also use mixtures of these materials (
It could be X.

The amount of water-compatible monohydric alcohol is preferably 10-55% by weight based on the total weight of the soft cationic fabric softener, the alcohol and the aqueous base material. desirable. This amount also includes the alcohol content in the raw materials.

Preferably, the aqueous base is in an amount of at least 30% by weight based on the total weight of the soft cationic fabric softener, water-compatible alcohol, and the aqueous base.

J
:stomach. The weight ratio of soft cationic fabric softener to emulsifier is greater than or equal to 10:1.

Nonionic emulsifiers that can be included in small amounts in the composition include alkylene oxide adducts of C to C2o fatty alcohols containing 3 to 12 alkylene oxide groups per molecule, condensed with 4 to 8 molecules of alkylene oxide; C ~C1o
There are alkylphenols and sorbitan esters containing alkyl groups of

The composition may also contain pl+ buffering agents (the pl+ of the fabric softening composition when diluted) such as weak acids such as phosphoric acid, benzoic acid, citric acid, etc.
(preferably less than 6.0), aromatic additives substituted with acid hydroxyl groups or aldehyde groups, re-wetting agents, viscosity modifiers, anti-gelling agents, fragrances, fragrance pigments, fluorescent agents, colorants , white water-based substances, anti-foaming agents, anti-foaming agents,
Enzymes, optical brighteners, opacifying agents, stabilizers such as guar gum and polyethylene glycol, anti-shrink agents, anti-shrink agents, anti-crimp agents for textiles, anti-stain agents, mud removers, fungicides, fungicides, Antioxidants, preservatives, preservatives such as Bronopol®, a commercial product of 2-bromo-2tropropane-1,3-diol, dyes, bleaching agents or bleaching precursors, draping agents. , an antistatic agent, an ironing aid, and the like may optionally be included.

If these optional ingredients are added, their respective concentrations will be up to 5% by weight of the composition.

Silicones can be included in the composition as ironing aids, rewetting agents or antifoaming agents.

Silicones suitable for use in the compositions of this invention include predominantly linear polydialkyl or alkylarylsiloxanes in which the alkyl group contains from 1 to 5 carbon atoms. The siloxane may be amide or amine substituted.

When the siloxane is amine-substituted, the amine groups may be quaternized.

Preferably, the amount of nonionic softeners such as linear or branched paraffins or olefins and fatty acid esters of monohydric or polyhydric alcohols contained in the composition is less than 2.5% by weight; More preferably it is less than 1% by weight, particularly preferably less than 0.1% by weight.

Small amounts of higher alcohols or fatty acids, preferably alcohols or fatty acids that are liquid at ambient temperature, may be added to moisten the odor of the solvents contained in the composition.

The compositions of the invention can be manufactured in a variety of ways. One suitable method is to add a water-compatible monohydric or dihydric alcohol, or a mixture of alcohols and optional ingredients, to the liquid cationic fabric softener followed by the addition of water.

By adjusting the amount of electrolyte in the concentrated composition, the viscosity of the product upon dilution can be altered. Use of orthophosphoric acid as an electrolyte is convenient as it also serves to lower the pH of the diluted product, inhibiting bacterial growth.

The invention will now be described by way of non-limiting examples.

Examples 1 to 17 Compositions were manufactured according to the formulations shown in the table below. The composition was prepared by adding a 1:1 mixture of monohydric or dihydric alcohol and water to the cationic fabric softener, perfume and dye, and then the remaining water was added.

Prapagen (Pragene) as a soft cationic fabric softener
The composition containing pa, gen) resulted in a clear solution. Arquad 2 old (Arquad 2) instead of Prapagen
When HT, commercially available di-hardened tallow (dimethylammoni cum chloride) was used, it became a thin paste.

Examples Ingredients (%) Prapagen 53445 (1)' Butanol r) Propanol Industrial methanol spirit Linevol 9113 Pristerine 3508' Perfume DAB V dye 5 0 - Phosphoric acid 6 Deionized water 28 .0 0.08 Up to 100% Prapagen 33445 was prepared using Giraffe 1-tallow-dimethyl-ammonium chloride (supplied by Hoechst).
2 pipes), and this was filtered to remove suspended solids. It is desirable to use this active substance if it is desired to obtain an optically transparent concentrate.

1...70.13 [[% of 2 guns and 17.9% by weight of isoproper tool, 2...70.3 vehicle distance% of 2] - and 20.9ffi f
f1% isopropanol, 3... mixture of synthetic linear alcohols with chain lengths of C9 to C11, 4... isostearic acid supplied by llnichema, 5... diacinic acid blue No. 5 , 6... Orthophosphoric acid with a minimum assay of 85% and a specific weight of 1.75.

Example ingredients (%) DSTDMAC7 Prapagen 53445 (2) 56.0 BaI
J/7 (Varisoft) 4758 Isopropatol 2-Phenylenotal Propylene Glycol Flavor DAB V Dye 〇-Phosphate Deionized Water 2.0 0,008 0.16 29.4 28.0 10.0 0.008 0.004 0.16 0.08 Up to 100% 2.35 29.4 5.9 7...Prapagen 534 after drying to remove solvent and water
45 Samples, 8... Di-soft tallow imidazolinium methosulfate consisting of nominally 75% by weight active material and 15% by weight isopropanol.

50.0 1.8 0.004 0.12 Examples 18-20 In order to demonstrate the influence of the amount of electrolyte, namely J -phosphoric acid, on the viscosity of the concentrated composition according to the invention, Example 1 The following compositions were prepared using the method described in . 1
The effect of 0-phosphoric acid on the viscosity of the diluted product obtained by diluting 3 parts by volume of the concentrated composition with 3 parts by volume of cold water is also shown.

Implementation example 7 18
19 20 ingredients (%) Propagen 33445 (2) 231.3 31,3 3
1,3 31.3T industrial methanol 25.0 25
・O25,025,0 Spirit 1~ Incense Ol O,80,80,
80,8DAB V dye $il O,00400
0400040,004〇-Phosphoric acid 0.100,20
0.05 0 Concentrated narrative level (cP) 13.8 14.
4 15 14.4 Diluted narrative level ((:P) 34,6
26,238.346.1 All viscosities were measured at a shear rate of 110 s-1.

As the above results show, the inclusion of 0-phosphoric acid in the composition reduces the viscosity of the diluted product.

Example 21 To demonstrate that the viscosity of the diluted product depends on the hardness of the water used for dilution, the composition of Example 12 was diluted four times with water of various hardnesses. The viscosity of the diluted composition is 110
The results measured at a shear rate of s' were as follows.

Water hardness (lower 1”) Viscosity (cP) As this result shows, the viscosity of the composition when diluted is
C shows dependence on water hardness.

The term used herein with respect to water hardness is the 70% concentration of free hard water ions.

Claims (1)

[Claims] (1) (i) a soft cationic fabric softener substantially free of alkyl branched chain derivatives; (ii) a C_1-C_5 monohydric or dihydric alcohol that is compatible with water; and (iii) an aqueous base material, and contains at least 15% by weight of (i) and at least 28% by weight of (iii) based on the total weight of the components (i), (ii), and (iii) above. Softening composition.