JPH03113077A - Composition for softening textile fabric - Google Patents

Abstract

PURPOSE: To obtain a biodegradable softening compsn. having stability by which superior softening property is provided during a rinsing step in washing of a fiber product by comprising a specified quaternary ammonium salt and a specified fatty acid or its salt. CONSTITUTION: A compd. having two 12-24C alkyl or alkenyl groups which are connected to the molecule via an ester link such as a quaternary ammonium salt expressed by formula I (R1 is selected from 1-4C alkyl, alkenyl and hydroxyalkyl; R2 is selected from 8-28C alkyl and alkenyl; T is formula II, formula III; (n) is 0-5) and a non-saponified fatty acid material or salt thereof comprising an 8-28C fatty acid that is mono-, di- or tri-carboxylic acid are blended at a weight ratio of 10:1- to 1:10. They are dispersed in water to obtain a fabric softening compsn. in the liq. form. The compsn. contg. the combined above components is used during a rinsing step in washing to provide extremely superior softening property on fiber products.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to fabric softener compositions and methods of making the same. The invention particularly relates to fabric softener compositions for use in the rinsing stage of textile laundering.

European Patent No. 239910 (PROCTER & GAM
In BLE, it was proposed to incorporate biodegradable quaternary ammonium compounds into fabric softener compositions. U.S. Pat. No. 3,915,867 (STEPAN) discloses N-methyl, N, N-di(β-CI4-
The use of 11-acyloxyethyl)-hydroxyethylammonium methosulfate is disclosed.

One object of the present invention is to provide a biodegradable textile softener composition comprising a biodegradable quaternary ammonium compound.Another object of the invention is to provide a biodegradable textile softener composition having acceptable stability. An object of the present invention is to provide a drug composition. Yet another object of the present invention is to provide a fabric softener composition that is simple to manufacture and provides surprising softness to textiles.

Therefore, the present invention provides: (i) two Cs bonded to a molecule via an ester link;
A fabric softener composition is provided, comprising a quaternary ammonium substance containing a metal compound having a l2-28 alkyl or alkenyl group, and (11) a Cm-2m fatty acid substance or a salt thereof.

The compositions of the invention may have various forms such as pastes, liquids, tablets, etc., and may also be impregnated into substrates used, for example, in rotary dryers. The compositions of the invention preferably have liquid form with the active ingredient dispersed in an aqueous matrix.

One preferred type of ester-linked quaternary ammonium material for use in the compositions of the present invention can be represented by the following formula: wherein the R groups are individually selected from the Cl-4 alkyl, alkenyl or hydroxyalkyl groups. each 82 group is individually selected from CI+-28 alkyl or alkenyl groups, and n is an integer from O to 5.

One preferred material of this type is 5tepantexRH 90 (STEPAN).

Preferred types of quaternary ammonium materials also include those of the formula: where R3, n
and R2 represent the above meanings.

Preferred materials of this type and methods for their preparation are described, for example, in US Pat. No. 4,137,180 (LEVERBROTHERS
) is disclosed. These materials are described in U.S. Patent No. 413
The corresponding monoesters as described in No. 7180,
For example, it is preferable to contain small amounts of 1-tallowoxy and 2-hydroxytrimethylammoniumpropane chloride.

The amount of the ester-bonded quaternary ammonium compound used is preferably 1% by weight or more, more preferably 3% by weight or more of the softener composition. Particularly advantageous are compositions with a high active ingredient content, for example compositions containing 8% or more of ester-linked quaternary ammonium compounds. The content of ester-linked quaternary ammonium compounds is preferably 70% of the composition.
% by weight or less, more preferably 50% by weight or less, usually 3
~30% by weight.

The fatty acid substance or its salt is any monocarboxylic acid containing alkyl or alkenyl having 8 to 28 carbon atoms;
Preferred fatty acid substances or salts thereof, which may be dicarboxylic or tricarboxylic acids or salts thereof, may have the following formula: R, COOR2 in which R1 is a linear or branched alkyl having 8 to 28 carbon atoms. or an alkenyl chain, and Rz represents hydrogen or a cation. Preferred cations are alkali metal ions or alkaline earth metal ions, more preferably sodium, potassium or calcium ions.

Preferably non-saponified fatty acid materials are used. Particular preference is given to the use of free fatty acids having a melon length of 12 to 18, such as oleic acid, lauric acid, tallow fatty acids and the like.

The content of fatty acid substances is preferably at least 0.1%, more preferably at least 0.2% by weight of the composition. Particularly preferred are concentrated systems containing 0.5% or more of fatty acid material. The content of fatty acid substances is usually 50% of the composition.
Keep it below % by weight. The content of fatty acid substances is more preferably less than 30% by weight of the composition, typically 0.5-1
It is 0% by weight.

The weight ratio of ester-linked quaternary ammonium material to fatty acid material is preferably from 10:1 to 1:10, more preferably from 8:1 to 1:1, particularly preferably from 7:1 to 3:1.

Preferably, the composition of the invention has a pH of 2.0 or higher. In the case of compositions containing free fatty acids, the pH is preferably 5.0 or less to prevent saponification of the fatty acids. The preferred pH of the composition containing a fatty acid salt is 5.0 or more, more preferably 5.0 to 8.0.

The composition of the present invention includes active ingredients other than the above two types of ingredients,
For example, another fabric conditioner (fabric c
conditioning materials).

When selecting such optional ingredients, it is preferable to carry materials that do not substantially affect the biodegradability of the composition; therefore, the use of non- or less biodegradable materials is minimized. It is better to limit

The compositions of the present invention preferably do not contain significant amounts of non-ester bonded quaternary ammonium compounds.8 The compositions of the present invention more preferably do not substantially contain such quaternary ammonium compounds. do not have.

Suitable conditioners that may be included in the compositions of the invention include non-ionic materials; suitable non-ionic fabric softeners include glycerol esters such as glycerol monostearate; fatty alcohols such as stearyl alcohol; Alkoxylated fatty alcohol, C9-C
24 fatty acids and lanolin, and derivatives thereof. Suitable materials are described in European Patent Application No. 88520 (I
Jnilever PLC/MV), No. 122141 (tlnilever PLC/NV) and No. 7974
No. 6 (Procter & Gamble).

Other softening substances that may be incorporated into the compositions of the invention include, for example, amines as described in EP 89200545.5, or biodegradable substances as described in EP 89200113.2. There are amphoteric softening substances.

It is preferable that the amount of softening substances other than the above-mentioned ester bond substances and fatty acid storage is relatively small. That is, the weight ratio of the other softening substances to the two main softener components is preferably 2:1 or less, more preferably 1:1 or less, and most preferably 0.5:1 or less.

The compositions of the invention may further optionally contain one or more ingredients selected from: C1-C, non-aqueous solvents such as alkanols and polyhydric alcohols, strong or weak acids such as HCI, H2SO, , pH buffering agents such as phosphoric acid, benzoic acid or citric acid, rewetting agents, electrolytes, viscosity modifiers such as calcium chloride, antigelling agents, fragrances, fragrance carriers, fluorescent agents, colorants, hydrotropes, quenchers. Foaming agents, anti-redeposition agents, enzymes, optical brighteners, opacifiers, stabilizers such as guar gum and polyethylene glycols, emulsifiers, pre-shrunk agents, anti-wrinkle agents, fabric crisping agents.
ts), stain inhibitors, soil release agents, fungicides, linear or branched silicones, fungicides, antioxidants, corrosion inhibitors, 2-bromo-2- commercialized as Bronopol™ Preservatives, dyes, bleaches and bleach precursors, drapability agents, antistatic agents and ironing aids such as ditropropane-1,3-diol (
ironing aids).

When using these optional components, it is preferable that the amount thereof be 5% by weight or less of the composition.

The liquid compositions of the present invention may be prepared in a variety of ways; one suitable method is to prepare a molten mixture of an ester-linked quaternary ammonium material and a fatty acid material, optionally in combination with a pond softening material. , add this premix to water under stirring to form a dispersion, and then add other optional ingredients.

When using the fabric softener composition of the present invention, it can be added to a large amount of water to form a solution with which the textile to be treated is contacted. The total concentration of ester-bonded quaternary ammonium compounds and fatty acid compounds in this solution is typically 30 ppm to 11,000 ppm. The weight ratio of textile to solution is usually between 1:1 and 1:20.

The present invention will be explained in more detail with reference to Examples below.

The softening performance of Compositions A to C was investigated. Composition A is a commercially available textile conditioner (KUSCIIEIJEICI
Composition B consists of a dispersion of 4.5% by weight of dihardened tallow dimethylammonium chloride in water at pH 2.7, and 5% by weight of 5tepantex V
Composition C consisting of a dispersion of R90 in water at pH 2.3 contains 5% by weight of 5tepanLex VR)I.
It consists of a dispersion of 90% and 0.83% hardened tallow fatty acids in water at a pH of 2.5.

2.5 kg of unsealed terry towel cloth ^EG L^
VA-HAT 570te24Fl17) Water and foog (
7) Commercially available powder detergent (PERSrL AUTOM^Tr
C) was washed at 50°C.

Compositions A-C were added in the indicated amounts during the final rinse step of this wash. Line-dry the towels.
), flexibility was evaluated based on the Launtropin test method by a trained panel of nine people. The higher the flexibility, the higher the score. The results were as follows.

- Chestnut dip with the softness of a Lee towel” (Sato J-co) Destination L Throw A 2.0 2.9
3.3B 1.9
2.9 2.8C3,63,95,
0 *) Amount of active substance (cationic softening substance with optional addition of fatty acids) per rinse (in g).

As these results show, the softening capacity of composition C is clearly higher than compositions A and B. This means that the combination of an ester-linked quaternary ammonium compound and a fatty acid material results in a composition that exhibits an extremely good softening effect.

The softening performance of compositions E and F was investigated using compositions 11 and 11. The composition is a commercially available textile conditioner (COCCOLINOCO
NCENTRATE>. These compositions were prepared by heating the active ingredient until it melted and dispersing the molten active ingredient in deionized water at 70°C with stirring.

1LLljL2L DE F- DTTMAPC book
12゜00 10.29THTMΔPC*
Ning 13.
00 2.5F DHTDM^C car book capital
12.80 Hydrogenated tallow fatty acid 3
．． 20 - 2.14 Isopropyl alcohol 2
,13 2.70 2.27Wed
−1−−−−Remaining −−−1 car U.S. Patent No. 41
1,2-Ditallow oxytrimethylammonium propane chloride prepared by the method of No. 37180.

*Kyo 1 manufactured by the method of U.S. Patent No. 4137180
Tallow oxy, 2-hydroxytrimethylammonium propane chloride.

This car is dicured tallow dimethyl ammonium chloride.

A 40 g terry towel test sample was washed together with ballast terry and polyester cotton in a MIELE front loading automatic washing machine with a total weight of 2.5 kg. This laundry is New System Persi
The test was carried out at 60°C using 100g of l^automatic. At the final rinsing step, add 35ml of E or F to the composition.
added.

The samples were line-dried and evaluated for softness by a specialized panel in a pairwise comparison based on the Lountropin test method. The higher the flexibility, the higher the score.

The results were as follows.

Disturbance 1 ((1 to L D
O,00E
-0,23F +1.009
A between-composition difference of 0.89 was required to achieve 5% significance.

As these results show, composition F is superior to compositions R and E.
Higher softening performance, which means that compositions containing an ester-linked quaternary ammonium compound in combination with a fatty acid material exhibit extremely high performance.

E1” and 0ECD Paris 1981 Te5t Guid
eline 301B, Deci-sion or
the Council C(81)30 Final
, Consistent with the requi
rements of officialia, I Jour
nal of the European Cos+mu
nities No, L251/179 C,5BrO
Improved STR0M as described in DEGRADATION
Tests compared the biodegradability of ester-linked quaternary ammonium materials to more commonly used quaternary ammonium materials, such as di-hardened tallow dimethylammonium chloride. This test essentially measures the amount of carbon dioxide evolved from a sample subjected to biodegradation as a percentage of the maximum calculated value.

Parallel [11℃] DHTDMAC car 20%5
tepantex VRH9067, 1±8.7 (measured 8 times) DTTMAPC book* 78.9
f10.1 (measured 10 times) Screw hardened tallow dimethylammonium chloride.

Zeroing 1,2-ditallow oxytrimethylammonium propane chloride.

These results indicate that the ester-linked quaternary ammonium materials suitable for use in the compositions of the present invention are more biodegradable than the more commonly used quaternary ammonium materials.

Claims (8)

[Claims] (1) (i) 2 attached to the molecule via an ester link
a quaternary ammonium substance consisting of a compound having two C_1_2_-_2_8 alkyl or alkenyl groups;
i) A fabric softener composition comprising a C_8_-_2_8 fatty acid substance or a salt thereof. (2) The fabric softener composition according to claim 1, which is in the form of a liquid comprising an aqueous base. (3) The quaternary ammonium substance has the following formula: ▲Mathematical formula, chemical formula, table, etc.▼ [wherein each R_1 group is individually selected from C_1_-_4 alkyl, alkenyl or hydroxyalkyl group, and each R_2 group individually selected from C_8_−_2_8 alkyl or alkenyl groups, T is ▲ has a mathematical formula, chemical formula, table, etc. ▼ or ▲ has a mathematical formula, chemical formula, table, etc. ▼, and n is an integer from 0 to 5]. Claim 1 or 2 consisting of one or more compounds shown below.
The fabric softener composition described in . (4) A claim in which the quaternary ammonium substance has the following formula: ▲There are mathematical formulas, chemical formulas, tables, etc.▼ [In the formula, R_1, n and R_2 represent the meanings stated in claim 3] 4. The fabric softener composition according to any one of 1 to 3. (5) The fabric softener composition according to any one of claims 1 to 4, which has a pH of 2.0 to 5.0. (6) The fabric softener composition according to any one of claims 1 to 5, wherein the fatty acid substance is not saponified. (7) Quaternary ammonium substance (i) versus fatty acid substance (ii)
) has a weight ratio of 10:1 to 1:10.
The fabric softener composition according to any one of the above. (8) Claim 1 in which the quaternary ammonium substance comprises 1,2-ditallow oxytrimethylammonium propane chloride.
8. The fabric softener composition according to any one of 7.