JPS62135599A - Builder-containing non-aqueous liquid detergent 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 relates to a liquid or paste containing non-aqueous non-aqueous solution comprising a non-aqueous liquid medium containing a non-ionic detersive surfactant and a builder suspended or dispersed in this medium. It concerns an aqueous detergent composition.

Built non-aqueous liquid detergent compositions of this type have already been proposed in the prior art. -For example, British Patent Specification No. 1
, No. 205,711, No. 1,270,040 and No. 1
See No. 292.352. These prior art suspension agents were used.

Subsequently, a built-in non-aqueous 'tl I1g detergent composition containing an a-body valve ionic detersive surfactant but no solids dispersant was disclosed in European Patent Application No. 0030096.

In any of these prior art, the non-compound ionic detersive surfactant is selected from the condensation products of alkylene oxides and alcohols, alkylphenols, amides, and the like.

However, Hiltered non-aqueous liquid detergent compositions based on non-ionic detersive surfactants do not dissolve very quickly in aqueous laundry liquors. Although the dissolution rate may be improved by using large amounts of non-aqueous solvents, there is a risk that the storage stability of the non-aqueous liquid composition may be compromised and the cost of such compositions may also be unduly increased. Ma')ru.

The use of certain types of non-ionic detersive surfactants can significantly increase dissolution rates compared to the use of pond non-ionic detersive surfactants, thereby significantly reducing the amount of non-4C solvent used. It turns out it can be done.

Particular types of nonionic detersive surfactants of the present invention include, for example, C
, -C,, alkylphenol, linear or branched, first likely second C3-C+e deal rule, ca-c
+e Fatty acid amide, etc. (consisting of a shallow hydrophobic group ethylene oxy I (EO) and propylene oxide (PO) sequentially combined with each other. The molar ratio of PO to EO in this W1 synthesis product is has an important meaning, i.e. r'o/EO
If the ratio is too small, the desired benefits will not be obtained, and if the PO/EO ratio is too large, solubility will be adversely affected. The molar ratio of PO to EO in the non-ionic detersive surfactants of the present invention should be in the range 1.17 to 2=1, preferably in the range 7:4 to 1.2.

The nonionic detersive surfactants of the present invention should further not be such as to form a highly viscous liquid crystalline phase in the presence of water, and should not have a cloud point above 5°C. Suitable nonionic detersive surfactants of the invention include, for example, 7
mol of ethylene oxide and 4 mol of propylene oxide and ec 1) -C+ 5 condensate of primary alcohol, Taro #4, 9 mol of ethylene oxide and 2.7 mol of propylene oxide and 1 Teragota C, - The nonionic detersive surfactant of the present invention containing C,5 alcohol is preferably one that causes less foaming.

Mixtures of the nonionic detersive surfactants of the invention with other detersive surfactants such as anionic, cationic or amphoteric detersive surfactants and soaps may be used. If such a mixture is used, it must be water-free and liquid at room temperature.

Specific examples of anionic detersive surfactants include alkali metal salts of akylbense sulfonates having 10 to 18 carbon atoms in the alkyl group, quino and ether sulfates, and CIO-C24. Examples include olefin sulfonate salts formed by sulfonating an olefin, then neutralizing and hydrolyzing the sulfone reaction product. Cationic detersive surfactants include aliphatic or aromatic higher alkylene Examples include (lower alkyl) ammonium halogens, and soaps include alkali metal salts of C I2-C24 fatty acids.

Generally, the compositions of the present invention include a nonionic detersive surfactant in an amount of at least 10% by weight of the composition. The amount of nonionic detersive surfactant in the composition can be increased up to about 90%, but in practice is often from 20 to 70%, preferably from 20 to 50%, by weight of the composition.

The builder used in the present invention may preferably be either an anhydrous inorganic builder or an organic builder. Suitable organic builders include aminopolycarboxylic acids, such as ethylenediaminetetraacetic acid (EDT^), nitrilotriic acid 1 (NTA), diethylenetriaminepenta-nitride acid (D
EPTA), hydroxyethylaminodiacetic acid, etc.; alkali metal salts of ethanehydroxyphosponic acid, aminophosphonic acid, etc.; polymer electrolytes, such as alkali metal salts of hydrolyzed copolymers of ethylene and maleic anhydride. and alkali metal polyacrylates; alkali metal alkenyl succinates, etc., and lium phytate. Suitable inorganic builders include zeolites;
Examples include alkaline ortho-, poly-1, rho- and meta-phosphates, silicates, borates, carbonates and the like. Mixtures of organic and inorganic hilders may also be used. The organic builder does not need to be anhydrous, and may also be used in the form of a hydrate, which is commonly reprinted, such as NT8he11□O, EDTΔ2+120, etc.

The amount of builder present in the composition of the invention is determined by the amount of builder present in the composition.
It may be from 1 to 70% by weight of the snout. For commercial purposes, the amount of builder usually ranges from about 10% to about 60% by weight of the composition.
It is. The particle size of the builder is less than 300μ, preferably 2
Make it less than 00μ.

The weight ratio of nonionic detersive surfactant to builder is usually 10
:10 to 1:4, for commercial purposes 4:1 to 1:4, preferably about 1:2.

The liquid detergent compositions of the present invention are substantially anhydrous.

Anhydrous as used herein means that the final composition contains less than 5% water by weight.
This means that it preferably contains less than 2% by weight. This does not include water from hydration reactions.

The stability of the product can be further improved by introducing a few percent of emulsifiers or thixotropic agents, such as lauric acid jetanolamide, ethoxylated lanolin, sodium dioctyl sulfosuccinate, etc.

The viscosity of the composition of the invention varies depending on the ingredients.

To give the composition sufficient mobility, the viscosity should be 100
Viscosities from 3,0 to 3,0 OO cP are preferred, but higher viscosities up to 60,0 OO cP can also give satisfactory results. If desired, up to 20% diluents such as ethyl alcohol, hexane, heptane, benzene,
The viscosity of the composition may be adjusted by adding xylene, 1-luene, tetrahydrofuran, dimethyl sulfoxide, or the like.

The compositions of the invention may also contain other substances 3 that are commonly used in detergent compositions and are considered desirable additives. For example, a bleaching agent such as an alkali metal perborate (anhydrous or hydrated form) may be incorporated in an amount of about 5 to about 30% by weight of the composition. Other enzymes such as amylases, proteases and lipases, dyes, fluorescent substances, bleach precursors and activators, bleach stabilizers, fragrances, disinfectants, soil suspending agents and corrosion inhibitors are also essential in the compositions of the invention. It can be added without changing the properties.

In this regard, bleach precursors such as tetraacetylethylenediamine are more stable in non-aqueous detergent compositions of the present invention than in non-aqueous liquid detergent compositions based on non-ionic detergents other than the present invention. A surprising fact has been discovered.

Suspending agents such as bulky metal acids and mecloid oxides such as silica may optionally be added, of course in amounts of 1 to 5% by weight.

The present invention will be explained in more detail below with reference to non-limiting examples. In addition, % is weight %.

The rate of dissolution of the composition was determined by adding a non-aqueous liquid detergent at a concentration of 6.5 g/l to tap water at room temperature at a constant stirring speed (100 rpm) and measuring the conductivity of the resulting mixture. . The time at which the conductivity no longer changes is recorded as the dissolution time.

and i The following compositions were prepared using various nonionic detersive surfactants shown in Table A, and their cloud points, liquid crystals (L, C,
) Phase formation and dissolution times were measured. The results are shown in the table.

Weight% Non-ionic detersive surfactant 5゜Anhydrous sodium triphosphate 27,5 Anhydrous thorium carbonate
7.5 Sodium perborate water salt
15. .

Table - 8 EO-ethylene oxide PO-propylene oxide -C
,5 primary alcohol mixture and 1:2.5 PO/EO
The procedure of Example 1 was repeated using a C,-C,5 primary alcohol mixture with a cloud point of 39 DEG C. having a molar ratio of 2.3 moles of PO and 5.7 moles of EO. The results are as follows.

1) L, C, no formation 2) Dissolution time: complete dissolution in 2 minutes and 3 minutes respectively A builder-containing non-aqueous liquid detergent having the following composition was produced.

Weight % Nonionic detersive surfactant 38.6 Glycerol triacetate 1-5,0 Sodium triphosphate (anhydrous > 30.0 Sodium carbonate (anhydrous) 4.0 Thorium perborate hydrate 13.4 Oxoboric acid )・Rium 2・1tel
゛acetylethylenediamine 4.0 sthorium carboxymethylcellulose 1.0 tetra(2) ethylenediamine (sI ~ lithium salt > 0.15 ethylenediaminetetra(methylene phosphonic) acid (sulfonyl phosphonic acid) o, 1 fluorescent substance 0 .3 Fragrance
0.25 Large bulk silica 1.0 The following nonionic detersive surfactants were used.

A, Cl3-CIs first flucol-4,9-[
- 2.7 mol of PO condensate.

B, C, -C, primary flucol - 4 moles of Eo and 1.
5 moles of po! ? a of course.

C, Cs-Cl+primary alcohol-5.5 moles of EO and 0.5 moles of PO condensation↑Of course.

D, C, -C+ + primary alcohol - 6 moles of EO
Metal shrinkage.

Tetraacetylethylenediamine (T
The stability of TAED) was investigated by iodometric titration of the TAED remaining in the composition after 12 weeks of storage at 37°C.

The following results were obtained.

% of TAED remaining in non-aqueous liquid detergent after storage for 12 weeks at 37°C: Near 9% for A = 69% for B = 45% for C = 30% for D;

Claims (4)

[Claims] (1) A builder-containing non-aqueous liquid detergent composition containing a non-ionic detersive surfactant and a builder, the non-ionic surfactant comprising an organic hydrophobic group first condensed with ethylene oxide and then condensed with propylene oxide. , wherein the nonionic detersive surfactant has a molar ratio of propylene oxide to ethylene oxide of from 1:17 to 2:1. (2) The composition according to claim 1, wherein the molar ratio is from 7:4 to 1:2. (3) The organic hydrophobic group is C_8-C_1_8 alkylphenol or a linear or branched first or second C
Claim 1 characterized in that it is _8-C_1_8 alcohol or C_8-C_1_8 fatty acid amide
The composition according to item 1 or 2. (4) The composition according to any one of claims 1 to 3, characterized in that it contains an alkali metal perborate and a low-temperature bleach activator.