ES2635605T3 - Washing, cleaning or pretreatment agent with increased cleaning power - Google Patents

Abstract

Washing, cleaning or pretreatment agent, comprising (a) 1% to 60% by weight of a first nonionic surfactant of formula R-O-[OE]x-[OP]y-H in which R is >= a branched hydrocarbon residue with 8 to 14 carbon atoms, OE is >= -CH2CH2O-, OP is >= -CHCH3CH2O-, x is >= 1, 2 or 3 and y is >= 1, (b) 1% to 60% by weight of a second nonionic surfactant of formula R-O-[OE]x-[OP]y-H in which R is >= an unbranched and/or branched hydrocarbon residue with 8 to 18 carbon atoms, OE is >= -CH2CH2O-, OP is >= --CHCH3CH2O-, x is >= 5, 6, 7, 8 or 9 and y is >= 0 or 1 and (c) optionally, other common constituents of washing agents, cleaning or pretreatment.

Description

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DESCRIPTION

Washing, cleaning or pretreatment agent with increased cleaning power

The invention relates to a washing, cleaning or pretreatment agent, comprising two non-ionic surfactants. The invention also relates to the use of a washing, cleaning or pretreatment agent of this type and two non-ionic surfactants in a washing, cleaning or pretreatment agent.

Increasingly, delicate textile materials, such as silk or microfibers, are processed to obtain clothing that can be washed only at 30 or 40 ° C. In addition, washing that saves energy at low washing temperatures is fashionable. However, the power of washing agents in soils containing grease decreases with the reduction of washing temperatures. A pretreatment of soils that contain fat is considered annoying by many consumers.

In order to increase the cleaning power, it is proposed, for example, in WO 2011/117079 A1 the use of liquid, hydrophobic compounds in combination with (soaps) of unsaturated fatty acids. US 6,472,361 B1 describes liquid cleaning compositions containing ethoxylated C9-11 alkanols with 2 to 3 OE units and ethoxylated C8-18 alkanols with 7 to 8.5 OE units. These compositions show a good cleaning power in soils that contain grease. However, there is also a need to improve the cleaning power of washing, cleaning or pretreatment agents, in particular of dirt containing grease.

An objective of this invention was therefore the provision of a washing, cleaning or pretreatment agent with high cleaning power, in particular in soils containing grease.

This objective is solved by a washing, cleaning or pretreatment agent, which comprises

(a) from 1% to 60% by weight of a first non-ionic surfactant of formula

R-O- [OE] x- [OP] y-H

in which

R is = a branched hydrocarbon residue with 8 to 14 carbon atoms,

OE is = -CH2CH2O-,

OP is = -CHCH3CH2O-, x is = 1, 2 or 3 and y is = 1,

(b) from 1% to 60% by weight of a second non-ionic surfactant of formula

R-O- [OE] x- [OP] y-H

where R is = an unbranched and / or branched hydrocarbon residue with 8 to 18 carbon atoms,

OE is = -CH2CH2O-,

OP is = -CHCH3CH2O-, x is = 5, 6, 7, 8 or 9 and y is = 0 or 1 and

(c) optionally, other usual constituent substances of washing, cleaning or pretreatment agents.

Surprisingly, it has been shown that by combining two alkoxylated non-ionic surfactants, in which the first surfactant has a lower degree of alkoxylation than the second surfactant, the cleaning power of a washing, cleaning agent or pretreatment, particularly in soils that contain fat. Another advantage is that high cleaning power is already produced at low washing temperatures, for example at 20 ° C.

In a particularly preferred embodiment, the rest of the hydrocarbon is branched in position 2.

It has also been shown that the cleaning power through the use of a first surfactant, in which R is a hydrocarbon residue branched with ethyl in position 2 with a total of 8 carbon atoms, x is = 3 and y is = 1.

It is further preferred that in the case of the second non-ionic surfactant, R is an unbranched hydrocarbon residue with 12 to 18 carbon atoms, x = 7 or 8 and y = 0. These non-ionic surfactants can be obtained commercially, are economical and have a good potency cleaning.

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It has been shown that with a proportion of the first non-ionic surfactant with respect to the second non-ionic surfactant in the range of 1: 1 to 1: 4, the greatest increase in cleaning power can be achieved.

It may also be preferred from technical and aesthetic application points of view that the washing, cleaning or pretreatment agents contain other usual constituent substances of washing, cleaning or pretreatment agents, which are selected from the group that is constituted by anionic surfactants, cationic surfactants, zwitterionic surfactants, helpers, bleaching agents, bleaching catalysts, bleaching activators, enzymes, electrolytes, non-aqueous solvents, pH regulating agents, perfume compositions, perfume vehicles, fluorescence agents, dyes, hydrotope agents, foam inhibitors, silicone oils, dirt repellent polymers, grating inhibitors, wrinkle-inhibiting agents, wrinkle protective agents, color transfer inhibitors, antimicrobial active ingredients, germicides, fungicides, antioxidants , preservative agents, inhibited agents Corrosion agents, anti-static agents, bitterness agents, ironing auxiliary agents, foaming and impregnating agents, swelling and displacement resistance agents, softening components, skin care agents, UV absorbers, polymers that reinforce the power of washing ("reinforcing 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 flat structures.

In particular, the invention also relates to the use of a combination of the first non-ionic surfactant of the formula

R-O- [OE] x- [OP] y-H

in which

R is = a branched hydrocarbon residue with 8 to 14 carbon atoms,

OE is = -CH2CH2O-,

OP is = -CHCH3CH2O-, x is = 1, 2 or 3 and y is = 1 y

a second non-ionic surfactant of the formula R-O- [OE] x- [OP] y-H

in which

R is = an unbranched and / or branched hydrocarbon residue with 8 to 18 carbon atoms,

OE is = CH2CH2O-,

OP is = -CHCH3CH2O-, x is = 5, 6, 7, 8 or 9 and y is = 0 or 1

in a washing, cleaning or pretreatment agent for increasing the cleaning power in soils containing grease.

The invention will be explained in more detail below, among other things by means of examples. As an essential constituent part, the first non-ionic surfactant contains the washing, cleaning or pretreatment agent. This first non-ionic surfactant is contained in the agent in an amount of 1% to 60% by weight, with respect to the total amount of washing, cleaning or pretreatment agent. The first non-ionic surfactant has the formula

R-O- [OE] x- [OP] y-H

in which

R is = a branched hydrocarbon residue with 8 to 14 carbon atoms,

OE is = -CH2CH2O-, OP is = -CHCH3CH2O-, x is = 1, 2 or 3 and y is = 1.

The first suitable non-ionic surfactants with a branched hydrocarbon moiety comprise hydrocarbon moieties that are branched at position 2 with methyl, ethyl or propyl. Particularly preferred first non-ionic surfactants with a branched hydrocarbon residue are branched with ethyl in position 2. The first suitable non-ionic surfactants with a branched hydrocarbon residue are for example 2-ethylhexanol with 3 OE and 1 OP, 2- propylheptanol with 2 or 3 OE, with 2-ethylhexanol being especially preferred with 3 OE and 1 OP.

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In addition, the washing, cleaning or pretreatment agent contains a second non-ionic surfactant in an amount of 1% to 60% by weight, based on the total amount of washing, cleaning or pretreatment agent. The second non-ionic surfactant has the formula

R-O- [OE] x- [OP] y-H

in which

R is = an unbranched and / or branched hydrocarbon residue with 8 to 18 carbon atoms,

OE is = -CH2CH2O-,

OP is = -CHCH3CH2O-, x is = 5, 6, 7, 8 or 9 and y is = 0 or 1.

Pretreatment agents In particular, primary alcohols with 8 to 18 atoms of C and on average 5 to 9 mol of ethylene oxide (OE) per mole of alcohol are used, in which the alcohol moiety can be linear or branched with methyl in the position 2 or may contain linear and branched methyl residues in the mixture, as they are usually found in oxoalcohol residues. In particular, however, alcohol ethoxylates with linear residues of naturally occurring alcohols with 12 to 18 C atoms are preferred, for example coconut alcohol, palm alcohol, tallow alcohol or olefin alcohol, and on average 5 to 8 OE per mole of alcohol. Preferred ethoxylated alcohols include, for example, C12-14 alcohols with 7 OE, C9.11 alcohol with 7 OE, C13-15 alcohols with 5 OE, 7 OE or 8 OE, C12-18 alcohols with 5 OE, 7 OE or 8 OE and mixtures of these. The degrees of ethoxylation indicated represent statistical mean values that for a special product can be an integer or a fractional number. Preferred alcohol ethoxylates have a narrow homolog distribution (narrow range ethoxylates, NRE). Also suitable is a mixture of an ethoxylated (more strongly) branched fatty alcohol and an unbranched ethoxylated fatty alcohol, such as for example a mixture of a C16-18 alcohol with 7 OE and 2-propylheptanol with 7 OE. In particular, preferably the washing, cleaning or after-treatment agent contains a C12-18 fatty alcohol with 7 OE or a C13-15 oxoalcohol with 7 OE as the second non-ionic surfactant. In the first case it is applied that for the second non-ionic surfactant that R is an unbranched hydrocarbon residue with 12 to 18 carbon atoms, x = 7 and y = 0. For the second non-ionic surfactant, C13-15 oxoalcohol with 7 OE applies that R is a hydrocarbon residue with 13 to 15 carbon atoms, x = 7 and y = 0.

It has been shown that with a proportion of the first non-ionic surfactant with respect to the second non-ionic surfactant in the range of 1: 1 to 1: 4, the greatest increase in cleaning power can be achieved. Especially good cleaning powers are achieved with a ratio of the first non-ionic surfactant with respect to the second non-ionic surfactant of 1: 1 to 1: 2.

In addition to the first and second non-ionic surfactant, other non-ionic surfactants may contain the washing, cleaning or pretreatment agent. These include, for example, fatty alcohols with more than 12 OE. Examples are tallow fatty alcohol with 14 OE, 25 OE, 30 OE or 40 OE. Other suitable non-ionic surfactants comprise alkyl esters of alkoxylated fatty acids, fatty acid amides, alkyl polyglucosides, alkoxylated fatty acid amides, polyhydroxy fatty acid amides, N-methylglucamides, alkylphenol polyglycol ether, aminoxides and mixtures thereof.

In addition to the non-ionic surfactant (s) it may contain the anionic, cationic and / or zwitterionic surfactant, cleaning or pretreatment agent. From the technical point of view of application it contains the washing, cleaning or pretreatment agent preferably non-ionic and anionic surfactants. Sulfonates, sulfates, soaps, alkyl phosphates, anionic silicone surfactants and mixtures thereof are preferably used as an anionic surfactant.

As surfactants of the sulfonate type, preference is given in this regard to preferably alkyl (C9-13) benzenesulfonates, olefin sulphonates, that is mixtures of alkene- and hydroxyalkanesulfonates as well as disulfonates, as obtained for example from C12-18 monoolefins with terminal or internal double bond by sulfonation with gaseous sulfur trioxide and subsequent alkaline or acid hydrolysis of the sulfonation products. Also suitable are alkanes (C12-1s) sulfonates and esters of a-sulfograses acids (stersulfonates), for example the a-sulphonated methyl esters of coconut, palm kernel or tallow fatty acids.

As alk (en) yl sulfates, alkaline salts and in particular sodium salts of sulfuric acid half-esters of C12-C18 fatty alcohols are preferred, for example coconut fatty alcohol, tallow fatty alcohol, lauryl alcohol, myristyl, cetyl or stearyl or of the C10-C20 oxoalcohols and those semi-esters of secondary alcohols of these chain lengths. Due to technical washing interests, C12-C16 alkyl sulfates and C12-C15 alkyl sulfates are preferred as well as C14-C15 alkyl sulfates. Also suitable are anionic surfactants are 2,3-alkyl sulfates.

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Also suitable are sulfuric acid monosters of C7-21 straight chain or branched ethoxylated alcohols with 1 to 6 mol of ethylene oxide, such as Cg-11 alcohols branched with 2-methyl with an average of 3.5 mol of oxide of ethylene (OE) or C12-18 fatty alcohols with 1 to 4 OE.

Other suitable anionic surfactants are fatty acid soaps. Saturated and unsaturated fatty acid soaps are suitable, such as salts of lauric acid, minestic acid, palphic acid, stearic acid, erucic acid (hydrogenated) and behenic acid as well as mixtures of soaps derived from natural fatty acids, for example example coconut fatty acids, palm kernel, olive oil or tallow.

Anionic surfactants including soaps can be found in the form of their sodium, potassium or magnesium or ammonium salts. Preferably, the anionic surfactants are in the form of their sodium salts. Other preferred counterions for anionic surfactants are also the protonated forms of choline, triethylamine, monoethanolamine or methylethylamine.

In addition to the two non-ionic surfactants and the other optional surfactants, the washing, cleaning or pretreatment agent may contain other constituent substances that further improve the technical application and / or aesthetic properties of the washing, cleaning or pretreatment agent. In the context of the present invention it contains the washing, cleaning or pretreatment agent preferably additionally one or more substances from the group of helpers, bleaching agents, bleaching catalysts, bleaching activators, enzymes, electrolytes, non-aqueous solvents , pH regulating agents, perfume compositions, perfume vehicles, fluorescence agents, colorants, hydrotope agents, foam inhibitors, silicone oils, dirt-repellent polymers, grating inhibitors, shrinkage inhibitors, protective agents against to wrinkles, color transfer inhibitors, other antimicrobial active ingredients, germicides, fungicides, antioxidants, preservatives, corrosion inhibitors, antistatic agents, bitter agents, ironing agents, foaming and impregnating agents, swelling and displacement resistance, softener components before, skin care agents, polymers that strengthen the washing power ("reinforcing polymers") as well as UV absorbers.

Especially preferred additional constitutive substances are helpers, enzymes, electrolytes, non-aqueous solvents, pH regulating agents, perfume compositions, fluorescence agents, colorants, hydrotope agents, foam inhibitors, dirt repellent polymers, grating inhibitors, agents color transfer inhibitors, softening components, UV absorbers, as well as mixtures thereof.

The washing, cleaning or pretreatment agents according to the invention are preferably liquids 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 usual and known methods and procedures. Thus, for example, the constituent parts of the washing, cleaning or pretreatment agents can be mixed simply in stirring containers, water, non-aqueous solvents, the acidic components, such as, for example, alkylarylsulfonic acid, citric acid, acid, being conveniently disposed boric, phosphonic acid, etc., fatty alcohol ethersulfates, if present respectively, as well as the first and second non-ionic surfactant. The fatty acid is then added, if present, and the saponification of the fatty acid ratio at 50 ° C to 60 ° C is performed. Then the other constituent parts are added, preferably in portions.

Examples of realization:

Table 1 shows the compositions of three comparison formulations V1 to V3 as well as the washing, cleaning or pretreatment agent compositions E1 according to the invention (all amounts are indicated in% by weight of active ingredient, regarding the composition):

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

 E1 V1 V2 V3

 C12-18 fatty alcohol with 7 OE

 3 6 - -

 Na lauryl ether sulfate (2 OE)

 8 8 8 8

 (C10-13) alkyl linear benzenesulfonic acid, Na salt

 6 6 6 6

 Coconut fatty acid soap, Na salt

 3 3 3 3

 2-Ethylhexanol with 3 OE and 1 OP

 3 - 6 -

 C12-14 fatty alcohol with 2 OE

 - - - 6

 Copolymer of poly (acrylic acid) / maleic acid

 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

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 E1 V1 V2 V3

 Ethanol

 2 2 2 2

 Enzymes (cellulase, amylase & protease)

 0.8 0.8 0.8 0.8

 Fragrance

 0.8 0.8 0.8 0.8

 Colorants & defoaming agents

 0.15 0.15 0.15 0.15

 Water

 add until add until add until add until

 100 100 100 100

The different soils that contain grease with a diameter of in each case approx. 2 cm are applied in 6 rags of 50% / 50% Polycotton fabric.

A domestic washing machine (Miele W 526) was then loaded with 3.5 kg of concomitant laundry as well as soiled cloth rags. Additionally, 80 g of the washing agent to be tested (E1 or V1) was dosed and washed at 20 ° C. After drying and calendering the cloth rags, their remission was determined spectrophotometrically (Minolta CR200-1) (see table 2). The evaluation of the separation of spots was carried out through the value dY (value Y of the stain treated with E1 minus value Y of the stain treated with V1).

Table 2: Remission: dY value

 Stain type

 Stain after treatment with E1

 hamburger fat

 1.4

 lard (colored blue)

 4.2

 Sans Soucis makeup

 6.2

 powder-oil / skin oil

 6.1

The results show that by adding the first non-ionic surfactants, washing agents are obtained with an improved cleaning power in soils containing grease.

In another wash test, the sum of the remission units was determined in 92 different spots (58 spots containing grease, 16 blemishes sensitive spots and 18 enzyme sensitive spots). For this, a domestic washing machine (Miele W 526) with 3.5 kg of concomitant laundry was also recharged as well as the correspondingly soiled cloth rags. Additionally, 80 g of the washing agent to be tested (E1 or V1 to V3) was dosed and washed at 20 ° C. After drying and calendering the cloth rags, their remission was determined spectrophotometrically (Minolta CR200-1) (see above). It was shown that the sum of the units of remission in the washing agent E1 in 70 units than in the washing agent V1. However, it was also shown that with a complete replacement of the second non-ionic surfactant with one of the first non-ionic surfactants, the cleaning power of the washing agents is clearly reduced. Thus, the sum of the referral units is found in the case of the washing agent V2 in 115 units and in the case of the washing agent V3 in 169 units lower than in the case of the washing agent V1.

Claims (8)

5 10 fifteen twenty 25 30 35 40 Four. Five fifty 55 60 1. Washing, cleaning or pretreatment agent, comprising (a) from 1% to 60% by weight of a first non-ionic surfactant of formula R-O- [OE] x- [OP] y-H in which R is = a branched hydrocarbon residue with 8 to 14 carbon atoms, OE is = -CH2CH2O-, OP is = -CHCH3CH2O-, x is = 1, 2 or 3 and y is = 1, (b) from 1% to 60% by weight of a second non-ionic surfactant of formula R-O- [OE] x- [OP] y-H in which R is = an unbranched and / or branched hydrocarbon residue with 8 to 18 carbon atoms, OE is = -CH2CH2O-, OP is = --CHCH3CH2O-, x is = 5, 6, 7, 8 or 9 and y is = 0 or 1 and (c) optionally, other usual constituent substances of washing, cleaning or pretreatment agents. 2. Washing, cleaning or pretreatment agent according to claim 1, characterized in that in the case of the first non-ionic surfactant R is a branched hydrocarbon residue in position 2. 3. Washing, cleaning or pretreatment agent according to one of claims 1 or 2, characterized in that in the case of the first non-ionic surfactant R is an ethyl branched hydrocarbon residue in position 2 with 8 atoms of carbon, x is = 3 and y is = 1. 4. Washing, cleaning or pretreatment agent according to one of claims 1 to 3, characterized in that in the case of the second non-ionic surfactant R is an unbranched hydrocarbon residue with 12 to 18 carbon atoms, x is = 7 or 8 and is = 0. 5. Washing, cleaning or pretreatment agent according to one of claims 1 to 4, characterized in that the proportion of the first non-ionic surfactant with respect to the second non-ionic surfactant is in the range of 1: 1 to 1 : 4. 6. Washing, cleaning or pretreatment agent according to one of claims 1 to 5, characterized in that the other usual constituent substances of washing, cleaning or pretreatment agents are selected from the group consisting of anionic surfactants , cationic surfactants, zwitterionic surfactants, helpers, bleaching agents, bleaching catalysts, bleaching activators, enzymes, electrolytes, non-aqueous solvents, pH regulating agents, perfume compositions, perfume vehicles, fluorescence agents, colorants, hydrotope agents, foam inhibitors, silicone oils, dirt-repellent polymers, grating inhibitors, shrinking agents, wrinkle protective agents, color transfer inhibitors, antimicrobial active ingredients, germicides, fungicides, antioxidants, preservatives , corrosion inhibiting agents, antiestatic os, bitterness agents, ironing auxiliary agents, foaming and impregnating agents, swelling and displacement resistance agents, softening components, skin care agents, UV absorbers, polymers that strengthen the washing power (“polymer of reinforcement ”) and mixtures thereof. 7. Use of a washing, cleaning or pretreatment agent according to one of claims 1 to 6 in the washing, cleaning and / or pretreatment of textile flat structures. 5 10 fifteen twenty 25 8. Use of a combination of the first non-ionic surfactant of formula

 in which

 R-O- [OE] x- [OP] y-H

R is = a branched hydrocarbon residue with 8 to 14 carbon atoms, OE is = -CH2CH2O-, OP is = -CHCH3CH2O-, x is = 1, 2 or 3 and y is = 1 y a second non-ionic surfactant of formula

 in which

 R-O- [OE] x- [OP] y-H

R is = an unbranched and / or branched hydrocarbon residue with 8 to 18 carbon atoms, OE is = -CH2CH2O-, OP is = -CHCH3CH2O-, x is = 5, 6, 7, 8 or 9 and y is = 0 or 1 in a washing, cleaning or pretreatment agent for increasing the cleaning power in soils containing grease.