WO2013186170A1

WO2013186170A1 - Detergent, cleaning agent, or pretreatment agent having greater cleaning power ii

Info

Publication number: WO2013186170A1
Application number: PCT/EP2013/061915
Authority: WO
Inventors: Inga Kerstin Vockenroth; Eva-Maria Wikker; Nicole PLATH
Original assignee: Henkel Ag & Co. Kgaa
Priority date: 2012-06-12
Filing date: 2013-06-10
Publication date: 2013-12-19
Also published as: DE102012209827A1

Abstract

The invention relates to a detergent, cleaning agent, or pretreatment agent which has greater cleaning power and phase stability and which contains two different non-ionic surfactants of general formula R-O-[EO]_x-[PO]_y-OH. The formula of the first non-ionic surfactant is R-O-[EO]₄-[PO]_y-OH, and said first non-ionic surfactant has a lower degree of ethoxylation than the second non-ionic surfactant.

Description

"Washing, cleaning or pretreatment agent with increased cleaning power II"

The invention relates to a washing, cleaning or pretreatment agent comprising two nonionic surfactants. The invention also relates to the use of such a washing, cleaning or pretreatment agent and the use of two nonionic surfactants in a washing, cleaning or pretreatment agent.

Increasingly, delicate textiles, such as silk or microfiber, are processed into garments that can only be washed at 30 or 40 ° C. Furthermore, energy-saving washing at low wash temperatures is the trend. However, the performance of detergents on fatty soils decreases with decreasing wash temperatures. Pretreatment of greasy soils is considered troublesome by many consumers.

To increase the cleaning performance, for example in WO 201 1/117079 A1, the use of liquid, hydrophobic compounds in combination with unsaturated fatty acid (soap) n

proposed.

But there is still a need, the cleaning performance of washing, cleaning or

Pretreatment agents, especially on fatty soils, to improve.

An object of this invention was therefore to provide a washing, cleaning or pretreatment agent with increased detergency, especially on soils containing grease.

This object is achieved by a washing, cleaning or pretreatment agent comprising

(a) 1 to 60% by weight of a first nonionic surfactant of the formula

R-O- [EO] ₄ - [PO] _y -OH,

in which

R = an unbranched and / or branched hydrocarbon radical with 8 to 14

Carbon atoms,

EO = -CH ₂ CH ₂ O-,

y = 0 or 1, and

(b) 1 to 60% by weight of a second nonionic surfactant of the formula

R-O- [EO] _x - [PO] _y -OH,

where R = an unbranched and / or branched hydrocarbon radical having 8 to 18

Carbon atoms,

x = 6, 7, 8 or 9,

y = 0 or 1 and

(c) optionally, other common ingredients of detergents, cleaning or pretreatment agents.

Surprisingly, it has been found that the combination of two particular nonionic, alkoxylated surfactants, wherein the first surfactant has a degree of ethoxylation of 4, the

Cleaning performance of a washing, cleaning or pretreatment, in particular on fatty soiling, can be increased. Another advantage is that the resulting washing, cleaning or pretreatment agents are stable and show no phase separation.

It is preferred that in the first nonionic surfactant R is an unbranched

Hydrocarbon radical having 12 to 14 carbon atoms and y = 0 is. It has been found that when using such a first surfactant, a particularly phase-stable washing, cleaning or pretreatment agent is obtained.

It is further preferred that in the second nonionic surfactant R is an unbranched

Hydrocarbon radical having 12 to 18 carbon atoms, x = 7 or 8 and y = 0. These

Nonionic surfactants are commercially available, inexpensive and have a good

Cleaning performance.

It has been found that at a ratio of the first nonionic surfactant to the second nonionic surfactant in the range of 1: 1 to 1: 4, the greatest increase in cleaning performance can be achieved.

Furthermore, it may be preferred from the point of view of application technology and / or aesthetics that the washing, cleaning or pretreatment agents comprise further customary ingredients of washing, cleaning or pretreatment agents which are selected from the group consisting of anionic surfactants, cationic surfactants, zwitterionic surfactants,

Builders, bleaches, bleach catalysts, bleach activators, enzymes, electrolytes, non-aqueous solvents, pH adjusters, perfume compositions, perfume carriers, fluorescers, dyes, hydrotopes, foam inhibitors, silicone oils, soil release polymers, grayness inhibitors, anti-shrinkage agents, crease inhibitors, dye transfer inhibitors, antimicrobial agents, Germicides, fungicides, antioxidants, preservatives,

Corrosion inhibitors, antistatic agents, bittering agents, ironing auxiliaries, repellents and impregnating agents, swelling and anti-slip agents, softening components, skin care agents, UV absorbers, detergency-enhancing polymers ("booster polymers") and mixtures thereof. The invention also relates to the use of a washing, cleaning or pretreatment agent according to the invention in the washing, cleaning and / or pretreatment of textile fabrics.

In particular, the invention also relates to the use of a combination of first nonionic

Surfactant of the formula

R-O- [EO] ₄ - [PO] _y -OH,

in which

R = an unsubstituted and / or branched hydrocarbon radical having 8 to 14 carbon atoms, EO = -CH ₂ CH ₂ O-,

y = 0 or 1 and

a second nonionic surfactant of the formula

R-O- [EO] _x - [PO] _y -OH,

where R = an unbranched and / or branched hydrocarbon radical having 8 to 18

Carbon atoms,

x = 6, 7, 8 or 9 and

y = 0 or 1

in a washing, cleaning or pretreatment agent to increase the cleaning performance of soils containing grease.

In the following, the invention will be explained in more detail, inter alia, by way of examples.

As an essential ingredient, the washing, cleaning or pretreatment agent contains a first nonionic surfactant. This first nonionic surfactant is contained in an amount of from 1 to 60% by weight, based on the total amount of washing, cleaning or pretreatment agent in the composition. The first nonionic surfactant has the formula

R-O- [EO] ₄ - [PO] _y -OH, where R = an unbranched and / or branched hydrocarbon radical having 8 to 14 carbon atoms, EO = -CH ₂ CH ₂ O-, PO = -CHCH ₃ CH _{2 is} 0- and y = 0 or 1.

It is preferred that the first nonionic surfactant has a straight chain hydrocarbon radical of 12 to 14 carbon atoms. Further, it is preferred that the first surfactant has only EO groups and no PO groups. Accordingly, a particularly suitable first nonionic surfactant is an unbranched C12-i4 alcohol with 4 EO. The amount of the first surfactant in the washing, cleaning or pretreatment agent is preferably from 2 to 30% by weight and more preferably from 3 to 20% by weight, based in each case on the total amount of washing, cleaning or pretreatment agent.

Furthermore, the washing, cleaning or pretreatment agent contains a second nonionic surfactant in an amount of 1 to 60 wt .-% based on the total amount of washing, cleaning or pretreatment agent. The second nonionic surfactant has the formula

R-O- [EO] _x - [PO] _y -OH,

where R = an unbranched and / or branched hydrocarbon radical having 8 to 18

Carbon atoms,

EO = -CH ₂ CH ₂ O-,

x = 6, 7, 8 or 9 and

y = 0 or 1, up.

These alkoxylated, advantageously ethoxylated, nonionic surfactants are low foaming, readily biodegradable and find due to their high dispersibility and detergency and their stability to bases and acids wide use in washing, cleaning or

Pretreatment agents. Preference is given in particular to using primary alcohols having 8 to 18 carbon atoms and, on average, 6 to 9 moles of ethylene oxide (EO) per mole of alcohol, in which the alcohol radical can be methyl linear or linear in the 2-position or contain linear and methyl-branched radicals in the mixture , as they are usually present in Oxoalkoholresten. In particular, however, alcohol ethoxylates with linear radicals of alcohols of native origin having 12 to 18 carbon atoms, for example of coconut, palm, tallow or oleyl alcohol, and on average 6 to 8 EO per mole of alcohol are preferred. The preferred ethoxylated alcohols include, for example, C _12-14 alcohols with 7 EO, C ₉ . _i Alcohol with 7 EO, C ₁₃ . _15- alcohols with 6 EO, 7 EO or 8 EO, C ₁₂ -i ₈ -alcohols with 6 EO, 7 EO or 8 EO and mixtures of these. The degrees of ethoxylation given represent statistical means which, for a particular product, may be an integer or a fractional number. Preferred alcohol ethoxylates have a narrow homolog distribution (narrow rank ethoxylates, NRE). Also suitable are also a mixture of a (more) branched ethoxylated fatty alcohol and an unbranched ethoxylated fatty alcohol, such as a mixture of a Ci ₆ _i ₈ fatty alcohol with 7 EO and 2-propylheptanol with 7 EO. Particularly preferably, the washing, cleaning or pretreatment agent contains a Ci ₂ _i ₈ fatty alcohol with 7 EO or a Ci ₃ _i ₅ -Oxoalkohol with 7 EO as a second nonionic surfactant. In the first case, the second nonionic surfactant R is an unbranched hydrocarbon radical containing 12 to 18

Carbon atoms, x = 7 and y = 0. If the second nonionic surfactant is a Ci ₃ _i ₅ -Oxoalkohol with 7 EO, that R is a hydrocarbon radical having 13 to 15 carbon atoms, x = 7 and y = 0 is. Further preferred second surfactants include a Ci ₂ _i ₈ fatty alcohol with 8 EO or a Ci ₃ _i ₅ -Oxoalkohol with 8 EO.

The amount of the second surfactant in the washing, cleaning or pretreatment agent is preferably from 2 to 30% by weight, and more preferably from 3 to 20% by weight, based on the respective

Total amount of washing, cleaning or pretreatment agent.

It has been found that at a ratio of first nonionic surfactant to second nonionic surfactant in the range of 1: 1 to 1: 4, the greatest increase in cleaning performance can be achieved. Particularly good cleaning performances are achieved with a ratio of first nonionic surfactant to second nonionic surfactant of 1: 1 to 1: 2.

In addition to the first and the second nonionic surfactant, the washing, cleaning or pretreatment agent may contain other nonionic surfactants. These include, for example, fatty alcohols with more than 12 EO. Examples include tallow fatty alcohol with 14 EO, 25 EO, 30 EO or 40 EO. Other suitable nonionic surfactants include alkoxylated fatty acid alkyl esters,

Fatty acid amides, alkyl polyglucosides, alkoxylated fatty acid amides, polyhydroxy fatty acid amides, N-methylglucamides, alkylphenol polyglycol ethers, amine oxides and mixtures thereof.

In addition to the nonionic surfactant (s), the washing, cleaning or pretreatment agent may contain anionic, cationic and / or zwitterionic surfactants. From an application point of view, the washing, cleaning or pretreatment agent preferably contains nonionic and anionic surfactants. The anionic surfactant used is preferably sulfonates, sulfates, soaps, alkyl phosphates, anionic silicone surfactants and mixtures thereof.

As surfactants of the sulfonate type are preferably C ₉ _i ₃ -alkylbenzenesulfonates,

Olefinsulfonate, ie mixtures of alkene and hydroxyalkanesulfonates and disulfonates, as obtained for example from Ci ₂ _i ₈ monoolefins with terminal or internal double bond by sulfonation with gaseous sulfur trioxide and subsequent alkaline or acidic hydrolysis of the sulfonation, into consideration. Also suitable are ₂ Ci _i ₈ alkanesulfonates and the esters of α-sulfofatty acids (ester sulfonates), for example, the α-sulfonated Methylester of hydrogenated coconut, palm kernel or tallow fatty acids.

Alk (en) ylsulfates are the alkali metal salts and, in particular, the sodium salts of the sulfuric monoesters of C ₂ -C ₈ fatty alcohols, for example coconut fatty alcohol, tallow fatty alcohol, lauryl, myristyl, cetyl or stearyl alcohol or the C ₁ -C ₂₀ -oxo alcohols and those half-esters of secondary alcohols of these chain lengths are preferred. Of washing technology interest are the Ci ₂ -Ci ₆ alkyl sulfates and C | ₂ - Ci ₅ alkyl sulfates and Ci ₄ -Ci ₅ alkyl sulfates preferred. 2,3-alkyl sulfates are also suitable anionic surfactants.

Also, the sulfuric acid monoesters of straight-chain or branched C ₇ ethoxylated with 1 to 6 moles of ethylene oxide. ₂ alcohols, such as 2-methyl-branched C ₉ _n alcohols having an average of 3.5 moles of ethylene oxide (EO) or

with 1 to 4 EO, are suitable.

Further suitable anionic surfactants are fatty acid soaps. Suitable are saturated and unsaturated fatty acid soaps, such as the salts of lauric acid, myristic acid, palmitic acid, stearic acid, (hydrogenated) erucic acid and behenic acid and, in particular, soap mixtures derived from natural fatty acids, for example coconut, palm kernel, olive oil or tallow fatty acids.

The anionic surfactants and the soaps may be in the form of their sodium, potassium or magnesium or ammonium salts. Preferably, the anionic surfactants are in the form of their sodium salts. Further preferred counterions for the anionic surfactants are also the protonated forms of choline, triethylamine, monoethanolamine or methylethylamine.

In addition to the two nonionic surfactants and the optional other surfactants, the washing, cleaning or pretreatment agent may contain other ingredients containing the

application and / or aesthetic properties of the washing, cleaning or pretreatment further improve. In the context of the present invention, the washing, cleaning or pretreatment agent preferably additionally contains one or more substances from the group of builders, bleaching agents, bleach catalysts, bleach activators, enzymes, electrolytes, nonaqueous solvents, pH adjusters, perfume compositions, perfume carriers,

Fluorescers, dyes, hydrotopes, foam inhibitors, silicone oils, soil release polymers, grayness inhibitors, anti-shrinkage agents, anti-crease agents, color transfer inhibitors, other antimicrobial agents, germicides, fungicides, antioxidants, preservatives,

Corrosion inhibitors, antistatic agents, bittering agents, ironing aids, repellents and impregnating agents, swelling and anti-slip agents, softening components, skin care agents, detergency-enhancing polymer ("booster polymers") and UV absorbers.

Particularly preferred additional ingredients are builders, enzymes, electrolytes, nonaqueous solvents, pH adjusters, perfume compositions, fluorescers, dyes, hydrotopes, foam inhibitors, soil release polymers, grayness inhibitors, dye transfer inhibiting agents, plasticizing components, UV absorbers and mixtures thereof.

The washing, cleaning or pretreatment agents according to the invention are preferably liquid and contain water as the main solvent. The preparation of a washing or cleaning agent according to the invention is carried out by means of customary and known methods and processes. For example, the components of the washing,

Cleaning or pretreatment agents are easily mixed in stirred tanks, wherein water, nonaqueous solvents, the acidic components such as the alkylarylsulfonic acid, citric acid, boric acid, phosphonic acid, etc., the fatty alcohol ether sulfates, if present, as well as the first and the second nonionic Surfactant expediently be submitted.

Subsequently, the fatty acid, if present, is added and the saponification of the fatty acid portion takes place at 50 to 60 ° C. Then the other ingredients, preferably

in portions, added.

EXAMPLES

Table 1 shows the compositions of three comparative formulations V1 to V3 and the compositions of a washing, cleaning or pretreatment agent E1 according to the invention (all amounts are given in% by weight of active compound, based on the composition):

Table 1: Composition of the washing, cleaning or pretreatment agents V1 to V3 and E1

V1 V2 V3 E1

C ₂ -i ₈ fatty alcohol with 7 EO 6 3 3 3

Na lauryl ether sulfate (2 EO) 8 8 8 8 Linear C 13 -alkylbenzenesulfonic acid, Na salt 6 6 6 6

Coconut fatty acid soap, Na salt 3 3 3 3

C ₁₂ -i4 fatty alcohol with 2 EO 3

Isotridecanol with 3 EO 3

Ci2-i ₄ fatty alcohol with 4 EO 3

Polyacrylic acid / maleic acid copolymer 0.1 0.1 0.1 0.1

Sodium borate 1, 2 1, 2 1, 2 1, 2

Na citrate 3.5 3.5 3.5 3.5

Sodium phosphonate 0.5 0.5 0.5 0.5

Ethanol 2 2 2 2

Enzymes (cellulase, amylase & protease) 0.8 0.8 0.8 0.8

Perfume 0.8 0.8 0.8 0.8

Dyes & Defoamers 0.15 0.15 0.15 0.15

Water Ad 100 Ad 100 Ad 100 Ad 100

Various grease-containing soils with a diameter of about 2 cm were applied to 6 cotton cloths and washed after seven days of aging.

Subsequently, a household washing machine (Miele W 526) was loaded with 3.5 kg accompanying laundry and the soiled cloth rags. In addition, 80 g of the wash,

Added to cleaning or pretreatment agent (E1, V1, V2 or V3) and washed at 20 ° C. After hanging drying and lack of cloth rags, their remission was

spectrophotometrically (Minolta CR200-1) determined (see Table 2). The rating of

Stain removal was via the dY value (Y value of the spot treated with E1, V2 or V3 minus the value of the V1 treated spot).

Table 2: Remission: dY value

Stain after stain after stain after

Spot type treatment with E1 treatment with V2 treatment with V3

Pork lard (dyed blue) 4.8 9.5 5.9

Dust-skin fat / oil 10,5 16,2 14,3

Used engine oil 4.4 6.3 7.5

Make Up Sans Soucis 8,2 14,5 14,1

The results show that by adding the first nonionic surfactant, a washing,

Cleaning or pretreatment E1 is obtained, which is an improved

Cleaning performance on greasy soils has as a means without the first nonionic surfactant.

Of the washing, cleaning or pretreatment agents V1 to V3 and E1 used, only the washing, cleaning or pretreatment agents V1 and E1 were phase-stable. The washing, cleaning or pretreatment agents V2 and V3 already showed a clear phase separation after one day of storage.

Claims

claims:

1. washing, cleaning or pretreatment, comprising

(a) 1 to 60% by weight of a first nonionic surfactant of the formula

R-O- [EO] ₄ - [PO] _y -OH,

in which

R = an unbranched and / or branched hydrocarbon radical with 8 to 14

Carbon atoms,

EO = -CH ₂ CH ₂ O-,

PO = -CHCH ₃ CH 2 O- is and

y = 0 or 1, and

(b) 1 to 60% by weight of a second nonionic surfactant of the formula

R-O- [EO] _x - [PO] _y -OH,

where R = an unbranched and / or branched hydrocarbon radical having 8 to 18

Carbon atoms,

EO = -CH ₂ CH ₂ O-,

PO = -CHCH ₃ CH ₂ O-,

x = 6, 7, 8 or 9 and

y = 0 or 1, and

2. washing, cleaning or pretreatment agent according to claim 1, characterized in that in the first nonionic surfactant R is an unbranched hydrocarbon radical having 12 to 14 carbon atoms and y = 0.

3. Washing, cleaning or pretreatment agent according to one of claims 1 or 2, characterized in that in the second nonionic surfactant R is an unbranched

Hydrocarbon radical having 12 to 18 carbon atoms, x = 7 or 8 and y = 0.

4. Washing, cleaning or pretreatment agent according to one of claims 1 to 3, characterized in that the ratio of first nonionic surfactant to second nonionic surfactant in the range of 1: 1 to 1: 4.

5. washing, cleaning or pretreatment agent according to one of claims 1 to 3, characterized in that the other conventional ingredients of washing, cleaning or

Pretreatment agents are selected from the group consisting of anionic surfactants, cationic surfactants, zwitterionic surfactants, builders, bleaching agents, Bleach catalysts, bleach activators, enzymes, electrolytes, nonaqueous solvents, pH adjusters, perfume compositions, perfume carriers, fluorescers, dyes, hydrotopes, foam inhibitors, silicone oils, soil release polymers, grayness inhibitors, anti-shrinkage agents, wrinkle inhibitors, dye transfer inhibitors, antimicrobial

Active ingredients, germicides, fungicides, antioxidants, preservatives, corrosion inhibitors, antistatic agents, bittering agents, ironing auxiliaries, repellents and impregnating agents, swelling and

Slip fixatives, softening components, skin care agents, UV absorbers, detergency enhancing polymers ("booster polymers") and mixtures thereof.

6. Use of a washing, cleaning or pretreatment according to one of

Claims 1 to 5 in the washing, cleaning and / or pretreatment of textile fabrics.

7. Use of a combination of the first nonionic surfactant of the formula

R-O- [EO] ₄ - [PO] _y -OH,

in which

R = an unsubstituted and / or branched hydrocarbon radical having 8 to 14 carbon atoms,

EO = -CH ₂ CH ₂ O-,

PO = -CHCH ₃ CH ₂ O-,

y = 0 or 1 and

a second nonionic surfactant of the formula

R-O- [EO] _x - [PO] _y -OH,

where R = an unbranched and / or branched hydrocarbon radical having 8 to 18

Carbon atoms,

EO = -CH ₂ CH ₂ O-,

PO = -CHCH ₃ CH ₂ O-,

x = 6, 7, 8 or 9 and

y = 0 or 1,