JPS63282373A - Cloth softening composition - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a fabric softening composition.
In particular, the present invention relates to fabric softening compositions containing a water-insoluble cationic fabric softener, a fatty acid, and a nonionic surfactant.

Ru. This problem is particularly pronounced when storage is carried out at various cycling temperatures, including temperatures below the freezing point, since irreversible gels can form.

Adding a protonated di-polyethoxymonoalkylamine, a lower alcohol, and optionally a nonionic fabric conditioning agent to adjust the physical stability of the composition containing the quaternary ammonium fabric softener. has been proposed (European Patent No. 21476)
! i) Physical stability is obtained unless the softener raw material is added to the composition.

Has no drawbacks.

Now, by adding a nonionic surfactant to a composition containing a cationic fabric softener and a fatty acid, it is stable after one or more freeze/thaw cycles without the need for additional alcohol. It has been found that a composition can be obtained.

According to the invention, therefore, (i) an aqueous base; (ii) not more than 1 m% of a water-insoluble cationic fabric softener; and (iii) less than 0.2 m% of a 08-C24 fatty acid. (iv) a nonionic surfactant, characterized in that the molar ratio of the cationic fabric softener to the nonionic surfactant is in the range of about 40:1 to 1:1. A liquid fabric softening composition is provided.

A water-insoluble cationic fabric softener is a substantially cationic compound (fabr.
ic-substantive cationic c
compound). Highly preferred substances are quaternary ammonium salts having two C12-G24 alkyl or alkenyl groups, said chains having the necessary lc properties; for example -OH, -0+, -CONH-.

It may be appropriately substituted or interrupted by a functional group such as -COO-.

Known substantially water-insoluble quaternary ammonizations [wherein
R and R2 represent a hydrocarbon group having about 12 to 24 carbon atoms, R3 and R4 represent a hydrocarbon group having about 1 to 4 carbon atoms, and X is an anion;
preferably selected from halogen ions, methyl sulfate and ethyl sulfate groups.

Typical examples of these fourth softeners include citallow dimethyl ammonium chloride nitallow dimethyl ammonium methyl sulfate; dihexyl dimethyl ammonium chloride; di(hydrogenated tallow alkyl) dimethyl ammonium chloride; dioctadecyl dimethyl ammonium chloride; Dieicosyldimethylammonium chloride: didocosyldimethylammonium chloride: di(hydrogenated tallow)dimethylammonium methyl sulfate; dihexadecyldiethylammonium chloride; di(coconut alkyl)dimethylammonium chloride. Furthermore, dialkylethoxylmethylammonium sulfates based on soft or hard fatty acids are also suitable. Citalo dimethyl ammonium chloride, di(hydrogenated tallow alkyl)
Dimethylammonium chloride, di(coconut al 4)
-l)dimethylammonium chloride and di(coconut alkyl)dimethylammonium sulfate are also suitable.

Other suitable water-insoluble cationic substances have the formula:
6 is an alkyl or hydroxyal 4-yl group having 1 to 4, preferably 1 or 2 carbon atoms, R7 is 8-. an alkyl or alkenyl group having 25 carbon atoms, R8 is an alkyl or alkenyl group having 8 to 25 Im carbon atoms, and R
9 is hydrogen or alkyl having 1 to 4 carbon atoms, and 8' is an anion, preferably a halogen ion, methosulfate or ethosulfate). Suitable imidazolinium salts include 1-methyl-1-
(Tallowylamide)ethyl-2-tallowyl-4,5
- dihydroimidazolinium methosulfate and 1
-Methyl-1-(balmitoylamido)ethyl-2-octadecyl-4,5-dihydro-imidazolinium chloride. Other useful imidazolinium salts are 2-hebutadecyl-1-methyl-1-(2-stearylamido)-ethyl-imidazolinium chloride and 2-lauryl-1-hydroxyethyl-1-oleyl-imidazolinium chloride. It is nium chloride. Additionally, US Pat. No. 4,127,489 is also suitable. Mixtures of various cationic fabric softeners can also be used.

The amount of cationic fabric softener in the composition is preferably 1
It is mω% or more, particularly preferably 3 to 6 mω%.

Suitable fatty acids that can be used in the present invention include c
"C24 alkyl or alkenyl linear or branched monocarboxylic acids or polymers thereof. Preferably saturated fatty acids are used, especially hardened tallow C16-C
18 fatty acids are used. Mixtures of various fatty acids can also be used.

The amount of fatty acids in the composition is preferably less than 8%, particularly preferably between 0.2 and 2.51%.

The molar ratio of cationic fabric softener to fatty acid is at least 1:1 and preferably ranges from 4:1 to 9:1.

Suitable nonionic surfactants that can be used are, in particular, compounds having hydrophobic groups and reactive hydrogen atoms, such as aliphatic alcohols, acids or alkylphenols and alkylene oxides (in particular ethylene oxide or ethylene oxide and propylene oxide). combination).

Nonionic surfactants typically include alkyl (06-C22) phenol-ethylene oxide condensates of up to 25 EO (i.e. containing up to 25 units of ethylene oxide per molecule), ethylene oxide aliphatic (C -C22) condensates with first or second linear or branched alcohols, as well as products obtained by condensing ethylene oxide with the reaction product of propylene oxide and ethylenediamine. Other so-called nonionic surfactants include amine oxides, alkyl polyglycosides, ethoxylated castor oil and sorbitan esters.

The preferred amount of nonionic surfactant is 0.1 to 4.5
% by weight, especially in the range from 0.15 to 3% by weight.

The molar ratio of cationic fabric softener to nonionic surfactant is about 40:1 to 1:1, preferably about 18:1 to 3:
The range is 1.

The composition may further contain non-aqueous solvents such as C-C4 alkanols and polyhydric alcohols (the benefits of the invention are obtained without the addition of these substances), pH buffering agents such as phosphoric acid, benzoic acid or citric acid. weak R (the pH of the composition is preferably less than 6.0), rewetting agents, viscosity modifiers such as electrolytes and C-C24 fatty acids included in amounts of about 20 to 6000 ppm, antigelling agents, Fragrances, fragrance carriers, fluorescent agents, colorants, hydrotropes, antifoaming agents, anti-redeposition agents, enzymes, polishing agents (＼optic
albriQhteniQ a! ]entS), opacifiers, stabilizers such as guar gum and polyethylene glycols, anti-shrink agents, anti-wrinkle agents, fiber crimping agents, anti-spot agents, stain release agents, bactericidal agents, fungicides, antioxidants, anti-corrosion agents. agents, preservatives such as Bronol® Of®, commercial products of 2-promo-2-nitropropane-1,3-diol, dyes, bleaching agents and bleaching precursors, draping agents, antistatic agents and One or more optional ingredients selected from ironing aids such as silicones may also be included.

These optional ingredients, if added, each amount to up to 5% by weight of the composition.

Silicones suitable for use in the compositions of the invention are primarily linear polydialkyl or alkylarylsiloxanes in which the alkyl group has 1 to 5 carbon atoms. These siloxanes may be amide or amino substituted. If the siloxane is amine-substituted, the amino groups can be quaternized.

In addition to cationic fabric softeners, the compositions can also contain other non-cationic fabric softeners, such as nonionic fabric softeners. Suitable nonionic fabric softeners include lanolin and its derivatives, which are also incorporated herein by reference.

Typically, the material will weigh between 0.5 and 10% by weight of the composition.
Contain in an amount in the range of %.

In use, the fabric conditioning composition of the present invention can be added to a quantity of water to form a liquid, which is contacted with the fabric to be treated.

Generally, the total concentration of cationic fabric softeners, fatty acids, and nonionic surfactants in this liquid is about 30 ppm to 5
001)+11. The weight ratio of fabric to liquid is preferably less than about 25:1, particularly preferably from about 10:1
The ratio is approximately 4:1.

Compositions of the invention can be made in a variety of ways.

One suitable method involves forming a molten mixture of the cationic fabric softener and the fatty acid, adding this molten mixture to water with agitation to form a dispersion, and then adding the nonionic surfactant and optional ingredients. and add. In other suitable ways,
A nonionic surfactant is added to the molten mixture before the dispersion is formed.

The invention will now be further illustrated by non-limiting examples. In the examples, all weights are expressed as % by weight of active substance.

Example 1 A liquid fabric softening composition was made as follows.

The cationic fabric softener and fatty acid were premixed and heated until clear (60-75°C). The molten mixture thus formed was added via a dip pipe to water at 45-0.degree. C. with constant stirring over a period of at least 1 minute to form a dispersion. Other minor ingredients, including perfume, are added with constant stirring and the temperature of the dispersion is increased to 35°C.
The temperature was above ℃. Particularly preferably, the nonionic surfactant is added after the mixture has cooled to 35°C or below.

In this example, the amounts of ingredients used were such that the final product had the following composition, expressed as weight percent.

Alquat 2H73, 6% Brystyrene 4916 0.6% Nonidet LE 6T O, 25% Fragrance
0.13%
Approximate molar ratio of cationic form and nonionic form 11.1 For comparison purposes,
*Example 1 except that Nonidet LE6T was removed from the composition
(Example IA).

Both products were subjected to 1, 3 and 6 freeze/thaw cycles for visual evaluation.

The freeze/thaw cycle in this study included storing the 1009 product in a polyethylene bottle with a screw cap for 16 hours at a temperature of -12°C or below. The above-mentioned temperature is a temperature at which the product can be completely frozen. The product was then allowed to thaw at room temperature for 8 hours.

After one freeze/thaw cycle, the composition of Example 1 became slightly thicker than normal. 3 and 6 freezes/
Even after the thaw cycle, the composition of Example 1 has the properties of a conventional rinse conditioner, with continuous flow (C0n
It was possible to pour it as tinLIOu3 Stream). The N 1A composition after 1, 3 and 6 freeze/thaw cycles had slight flowability but could not be poured as a continuous stream.

These results demonstrate that the addition of a small amount of non-ionic surfactant to a composition containing a cationic fabric softener and a fatty acid provides excellent appearance and after 6 freeze/thaw cycles. A product is obtained which has flow properties that are also maintained.

Example 2 In this example, Nonidet LE6T was replaced with another nonionic surfactant. A composition having the following composition, expressed as mold %, was prepared by the method described above.

Alquat 2HT 3.6% Brystyrene 4916 0.6% nonionic surfactant 0.4% fragrance
0.13% A composition containing no nonionic surfactant (Example 2L) was prepared and tested for comparison purposes. In Example 2A, it is 0.4% and 0.2
% tank of APG300 was used. Each composition was subjected to the following cap:dispenser test after one and three freeze/thaw cycles.

After thawing the product, a known amount (typically 20 g) was weighed into an internally threaded cap having a total volume of approximately 2513 and a known weight. The cap was then inverted over the waste container for 10 seconds and reweighed. The results were expressed as a percentage of the amount of product weighed into the cap. Prior to freezing, these samples were found to remain approximately 10% within the gap.

The results are as follows.

As is clear from the results obtained, Noniget and E6
Substituting one of a variety of other nonionic surfactants for T may also result in the addition of small amounts of nonionic surfactants to compositions containing cationic fabric softeners and fatty acids. effect is retained. For some nonionic surfactants,
Optimal effect was obtained after several freeze/thaw cycles.

Furthermore, instead of Nonidet LE6T, Tween 20, Alfor 1214-7, Alfor 1214-1
1, Alfor 1214-13, Bridge 30, Bridge 35, Lutinsol AO7, Lutinsol This example contains 4.2% active ingredient and 0.13% fragrance, including a 6:1 weight ratio of Alquat 2HT:Brystyrene 4916 The effect of nonionic surfactants on the freeze/thaw stability of compositions with These compositions were made as described above. The amount of nonionic surfactant was expressed as weight percent of the final composition. These products were tested using the cap/dispenser test described above.
The damage was evaluated after one freeze/thaw cycle.

ffiwA ion type: Example 1r ion type Weight% Residual % J1
Ion desired 1-15'' mouth (dish-1 - approximate molar ratio 3
A: n-cass 35 0.4 80
39:1 [31,04716:I G 2.0 62
8: ID 4.0
16 4:IE
6.0 13 3:IF
8.0 11 2:IG
APG 300 0.2 69
13:IH05575:I I CO403:IJ
2.0 22
1:IK 3.0
17+:IL
4. OSep 1:IM Doha/-)Lt
45-18 0.4 85 16:
IN 1.0
31 7:70 2.
0 15 3:IP
4.0 13 2:IQ
6.0 Sep 1
:1 River Cation type: Example Non-ion type Weight % Residual % Non-ion type Ichigo-*A (D engineering ± and R Genabol 0-200 0.4 59
18: IS 1.0
21 7: IT
2.0 12 4:IU
4.0 9 2:IV
8. OSep 1:IW
/ Near't LE 6T O, 110027
: TX O, 2553
11:IYO,4367
:IZO,6335:I
AA 0.8 19
3:1B8 1.0
Sep 3:1 5ep in the table = phase separation As is clear from these results, a large amount of nonionic surfactant (the molar ratio of cationic type to nonionic type is small)
makes it quite unstable to freeze/thaw cycles.

111'' In this example, the effect of paper weight Nonidet L[6T was investigated on compositions other than those having 4.2% active ingredient and a 6:1 weight ratio of cationic fabric softener to fatty acid. . These compositions were made as described above, and % of an ingredient refers to its weight % in the final product.

・-Example NQ ABCD Component % DMDI-ITAc 3.2 3.2 4.8 4
．． 8HTFA, 0
．． 3 0.3 1.2 1.2
Incense Fl 6T O,120,1
20,330,33 Nonidetsu LE 6-piece 0.2
- 0.4 - Cation type: Non-ion type people's molar ratio; = ne lλ
;Ita::These compositions were evaluated by the cap:disbenza test described above.

In order of implementation: % A38 B Gel C25 [) 80 In each case, it was found that the addition of a nonionic surfactant improved the appearance and flow characteristics of the product.

Example 5 A composition having the following composition was prepared in the same manner as above. Again, the value of each component refers to ml% of the composition of the final product.

engineering
ゞ” Ill l I+ 00
″ ゞ”
Ill l l--QQ LL
FJ"' l: , l, I
I I l 0LLI
C'J('J1 1
゛ 1 100 o
c'J+/)-1 11ift l ○ υ
~-1J) 1 +111"'-"0 a:lc"""1111"-11≦(F')C'1""+111 1 These compositions were visually evaluated after one freeze/thaw cycle. . In both cases, the addition of nonionic surfactants improved the appearance and flow properties of the compositions. This example shows that the beneficial effect of adding nonionic surfactants to ALCUAQAT 2HT and PRISTYRENE 491
This shows that the composition is not limited to only those containing 6.

Example In the Examples, the flexibility capabilities of the following compositions were investigated.

1 maman 6A 6B" Ingredients % Alquat 3.6 3.6 Pristerene 4916 0.6 0.6 Dovanol 14-18 0.21 -Fragrance 0.13 0.
13 Alquat 2HT: 30.1-Dopanol 14-18 Molar Ratio Comparison Example Flexibility capacity was evaluated after one freeze/thaw cycle by subjective evaluation of an expert panel.

The composition was dispersed in tap water to obtain a dilute aqueous dispersion containing 0.01% active ingredient. 4 cotton towels (5
09) was rinsed with an aqueous dispersion of ljl in a tergotometer for 5 minutes at room temperature.

The fabric was then spin dried and line dried overnight.

These compositions were found to exhibit similar softening effects. However, one freeze/jlN cryocycle composition containing no nonionic surfactant (Example 6B) is slightly flowable but cannot be poured as a continuous stream, whereas the composition according to the invention It was slightly thicker than the flowability of a normal rinse conditioner, but could be poured as a continuous stream.

C1□~C14 straight chain alcohol ethoxylated with an average of 7 ethylene oxide groups per molecule (even mother==AP
G300: Based on 09-C11 alcohol and alcohol 1
Alkyl polyglycoside with an average of 1.6 glycoside rings per mole (supplied as a 51% active solution).

Commercially available di-cured tallow dimethylammonium chloride (
D M D HT A C) (75% active paste and CI2-C14 linear alcohol ethoxylated with an average of 4 ethylene oxide groups per molecule (even bridge 3
0, but with an average of 23 ethylene oxide groups per molecule.

DMCAO: Dimethylcocoamine oxide supplied as a 30% solution.

Explosive speed W 1) 91 to 6: C-5-C11 branched -class alkyl ethoxylated with an average of 6 ethylene oxide groups per molecule. An average of 35 per molecule with an average of 18 ethylene oxide groups per molecule. With an average of 50 ethylene oxide groups per molecule, an average of 200 ethylene oxide groups per molecule, and an average of 7 ethylene oxide groups per molecule. Same as Eltensol OA 7, but 1 dopanol 91 - Similar material to 6, but topped to remove volatiles.

Nonylphenol 20EO: Nonylphenol ethoxylated with 20 ethylene oxide groups per molecule.

Dialkyl ethoxy, ammonium methosulfate based on soft fatty acids.

With an average of 11 ethylene oxide groups per molecule, an average of 7 ethylene oxide groups per molecule with an average of 20 ethylene oxide groups per molecule.
Coconvex (Mar+5oft) 222 having ethylene oxide groups: Diamide quaternary product based on soft tallow.

ffi Tojin Uni' J-Bar Naamrobi Fist Ben Note Sharp

Claims (7)

[Claims] (1) (i) an aqueous base; (ii) not more than 8% by weight of a water-insoluble cationic fabric softener; and (iii) at least 0.2% by weight of C_8-C_2_
(iv) a nonionic surfactant, and the molar ratio of the cationic fabric softener to the nonionic surfactant is in the range of about 40:1 to 1:1. A liquid fabric softening composition characterized by: (2) The nonionic surfactant is (i) an alkylene oxide adduct of an aliphatic alcohol and an alkylphenol, (ii) an amine oxide, (iii) an alkyl polyglycoside, (iv) an ethoxylated castor oil, (v) The liquid fabric softening composition of claim 1 selected from the group consisting of sorbitan esters and ethoxylated derivatives thereof, and (vi) mixtures of said substances. (3) The nonionic surfactant is (i) dimethyl cocoamine oxide, (ii) nonylphenol ethoxylated with an average of 20 ethylene oxide groups per molecule, (iii) an average of 20 ethylene oxide groups per molecule. (iv) a 50/50 weight ratio of polyethylene sorbitan monolaurate and sorbitan monolaurate ethoxylated with an average of 20 ethylene oxide groups per molecule;
(v) a branched primary alcohol having 9 to 11 carbon atoms and ethoxylated with an average of 6 ethylene oxide groups per molecule; (vi) 12 to 14 carbon atoms; linear primary alcohols having atoms and ethoxylated with an average of 4, 7, 11, 13 or 23 ethylene oxide groups per molecule, and (vii) having 13 to 15 carbon atoms and per molecule 3. The liquid fabric softening composition of claim 2, wherein the liquid fabric softening composition is selected from the group consisting of branched chain primary alcohols ethoxylated with an average of 7, 8 or 11 ethylene oxide groups per ethylene oxide group. 4. The liquid fabric softening composition of claim 1, wherein the amount of nonionic surfactant is from 0.1 to 4.5% by weight. 5. The liquid fabric softening composition of claim 1, wherein the molar ratio of cationic fabric softener to nonionic surfactant ranges from 18:1 to 3:1. 6. The liquid fabric softening composition of claim 1, wherein the molar ratio of cationic fabric softener to fatty acid is at least 1:1. 7. The liquid fabric softening composition of claim 1, comprising at least 1% cationic fabric softener and less than 8% fatty acid.