SE500222C2 - Highly conc. liq. softeners - comprising pH regulating agent, fatty acid(s), water, cationic surfactants and a dispersant agent - Google Patents

Abstract

Liq. softening cleaning agent comprising a pH regulating agent, one or more fatty acids, water, cationic surfactants which can function at low pH-chosen from groups (A1) di-fatty acid methylamines, and (A2) imidazoline metasulphate, N-methyltriethanol ammonium fatty acid diestermethylsulphate, or vegetable or animal-based block esters or metasulphates, and a dispersion agent for the fatty acids and (A1).

Description

500 222 10 15 20 25 30 35 2 national products on the market based on DSDMAC but have high and rapid biodegradability according to OECD criteria and low toxicity to aquatic organisms.

According to the invention, this object has been achieved by a soft rinse in liquid form and comprising a pH-regulating agent, surfactant and water, which is characterized in that it contains A) one or more low-pH cationic surfactants from each of the groups, A1) fatty acid methylamines and A2) imidazoline methosulfate, N-methyltriethanolammonium fatty acid diester methyl sulfate, vegetable or animal based quaternary esters and vegetable or animal based methosulfate and B) a dispersant for the fatty acids and component A1). The product according to the invention also offers the additional advantage that it can be made very concentrated, up to 5 times more concentrated than conventional soft rinse aids, which entails environmental savings in the form of reduced packaging consumption and reduced space requirements during transport.

According to a preferred embodiment of the agent according to the invention, it contains a carboxylic acid. preferably citric acid, as a pH lowering agent in combination with a fatty acid such as, for example, myristic acid.

It is known per se to use, among other things, citric acid to lower the pH of soft rinsing agents, which leads to parts of the salt coatings on the fibrils being dissolved. The stiffness of the washed material will thereby be limited.

By combining a carboxylic acid such as citric acid and a fatty acid such as myristic acid in accordance with this embodiment of the agent according to the invention, it is achieved that component A1) retains its properties as cation surfactant at a higher pH than if only the carboxylic acid (citric acid) is used. as pH adjusting agents. The content of carboxylic acid (eg citric acid) to achieve a certain effect will thus be reduced.

As component A1) in the soft rinse aid according to the invention, a ditallow methylamine is preferably included.

According to one aspect of the present invention, component B) of the soft rinse is a nonionic surfactant, preferably a fatty alcohol ethoxylate. In this case, it is preferred that the fatty alcohol ethoxylate is one having 9-30, and having 9-30, preferably ethylene oxide units. preferably 16-18 carbon atoms in the fatty alcohol moiety In addition to the aforementioned components of the soft rinse aid of the invention, the agent may contain paint, perfume, preservatives and viscosity control agents as is known with conventional soft rinse aids.

Calcium chloride, for example, can be used as a viscosity regulator in this context.

The viscosity is preferably controlled to fall in the range of 30-1000 cP (0.03-1 Pa-s), preferably 50-300 CP.

According to a particularly preferred embodiment of the soft rinse aid according to the invention, this is characterized in that it contains citric acid in a concentration of 5, preferably 5-10% by weight, which as component A) contains A1) a difetic acid methylamine, preferably a ditallow methylamine, in a concentration of 2-10, preferably 3-7% by weight and A2) a cationic surfactant selected from the group consisting of imidazoline methosulfate, N-methyl-triethanolammonium fatty acid diester methyl sulfate, vegetable or animal based quaternary esters and vegetable or animal-based methosulfate in a concentration of 3-30, preferably 5-15% by weight, that it contains as component B) a fatty alcohol ethoxylate in a concentration of 0.2-5.0, 0.5- 2.0% by weight and that myristic acid is present in a concentration of 0.5-10, preferably preferably 1-5% by weight, the percentages being given on the total weight of the agent.

The balance to 100% consists of water and conventional additives such as paint, perfume, preservatives and viscosity regulators.

With particular advantage in this embodiment of the soft rinse according to the invention, the ratio of myristic acid: diphetic acid methylamine, preferably ditalgmethylamine, is in the range from 1: 3 to 1: 4.

Furthermore, it is advantageous to select the citric acid content within the above range so that a pH value <6.0, preferably below 5.5, is obtained in the rinsing solution when using the agent. An example of a preferred diphetic acid methylamine to be used as component A1) in the above-mentioned embodiment of the soft rinse according to the invention is the product sold under the trade name Armeen M2HT by Akzo Svenska AB, Gothenburg, Sweden and consists of ditalgal. methylamine.

Examples of products to be used as component A2) according to the above-mentioned embodiment of the soft rinse according to the invention are a 1-methyl-2-alkyl-3-alkylamidoethylimidazole methosulfate sold under the tradename Marlosoft R IQ90 by Hüls Aktiengesellschaft, Marl, Germany N-methyl-triethanolamicammoniumfet -diestermethyl1- sulphate sold under the trade name Marlosoft R E90 by Hüls Aktiengesellschaft, Marl, Germany, and a vegetable-based methosulphate sold under the trade name Dehyquart AU-56 by Henkel AG, Düsseldorf, Germany.

Examples of products to be used as component B) in the above-mentioned embodiment of the soft rinse aid according to the invention are the product sold under the trade name Lutensol R AT 25 by BASF Svenska AB, Gothenburg, Sweden and consists of a fatty alcohol ethoxylate with 16-18 C atoms in the fatty alcohol component and with 25 ethylene oxide units and the product sold under the trade name Marlipal R 1618/25 by Hüls Aktiengesellschaft, Marl, Germany and consisting of a fatty alcohol oxoxylate having 16-18 C atoms in the fatty alcohol component and 25 ethylene oxide units.

The soft rinse according to this embodiment of the invention is preferably prepared by a process which is characterized by the following steps: 500 222 10 15 20 25 30 35 1) 2) 3) 4) 5) 6) 6 The citric acid and component B) are added to water, which is preheated to a temperature of 60-70 ° C.

Component A1) and the myristic acid are heated separately to a temperature of 60-70 ° C and mixed thoroughly with each other at this temperature.

The mixture from 2) is added in the hot state to the hot solution from 1) with efficient stirring.

When the mixture from 3) is homogeneous, hot (about 60 ° C) component A2) is added to the mixture with stirring.

When the mixture from 4) is homogeneous, it is cooled with stirring to below 30 ° C, after which additives such as perfume, paint and preservatives are added with continued stirring.

When the mixture from 5) is homogeneous, a solution of calcium chloride in water is added to adjust the viscosity to the desired level with stirring.

The invention will be described in more detail below with the aid of a number of exemplary embodiments.

EXAMPLE 1 A soft rinse was prepared from the following ingredients. (Quantities stated as parts by weight) Component Quantity Tap water 789.0 Citric acid 60.0 10 15 20 25 30 35 500 222 7 Lutensol AT 25 (note 1) '25.0 Marlosoft: Q 90 (note 2) 3o.o Armeen MZHT ( note 3) 70.0 Myristic acid 20.0 Perfume 2.0 Polyethylene glycol 400 2.0 Color qs

Calcium chloride (10% by weight in H 2 O) to the desired viscosity Total - about 1,000 Remarks, 1. Fatty alcohol ethoxylate having 16 to 18 carbon atoms in the alcohol moiety and 25 ethylene oxide units; from BASF Svenska AB, Gothenburg, Sweden. 2-Methyl-2-alkyl-3-alkylamidoethylimidazole methosulfate from Hüls Aktiengesellschaft, Marl, Germany. Ditalgmethylamine from Akzo Svenska AB, Gothenburg, Sweden.

The preparation was carried out as follows: The water was preheated to a temperature in the range 60-70 ° C.

The citric acid and Lutensol AT 24 were dissolved in the hot water with stirring. Then the Armeen MZHT and myristic acid were each heated to the same temperature range as the water and then mixed thoroughly with each other at this temperature.

The mixture thus obtained was added in a hot state to the hot solution of citric acid and Lutensol AT25 with efficient stirring.

When this mixture became homogeneous, preheated Marlosoft IQ90 to about 60 ° C was added to the mixture with stirring until the mixture became homogeneous, after which perfume, polyethylene glycol 400 and color were added with continued stirring.

Finally, calcium chloride solution was added to the desired viscosity in the range of 50-200 cP.

EXAMPLE 2 In analogy to Example 1, a soft rinse was prepared from the same ingredients as in Example but Marlosoft IQ90 was replaced with the same amount of Dehyquart AU-56 (vegetable based methosulfate from Henkel Aktiengesellschaft, Düsseldorf, Germany). About 1000 parts by weight of soft rinse was obtained.

EXAMPLE 3 In analogy to Example 1, a soft rinse was prepared from the following ingredients. (Quantities stated as parts by weight.) Component Quantity Tap water 810.9 Citric acid 60.0 Lutensol AT25 (note 1) 12.5 Dehyquart AU-56 (note 2) 50.0 Armeen MZHT (note 3) 50.0 Myristic acid 12.5 Perfume 2.0 Polyethylene glycol 400 2.0 Color qs

Calcium chloride (10% by weight in H 2 O) to the desired viscosity Total approx. 1,000 10 15 20 25 30 35 500 222 Remarks 1. See note 1 in Example 1 2. See Example 2 3. see note 3 in Example 1 EXAMPLE 4 Analogous to Example 1 a soft rinse was prepared from the same ingredients as in Example 3 but Dehyquart AU-Sö was replaced with the same amount of Marlosoft IQ90 (1-methyl-2-alkyl-3-alkylamidoethylimidazole methosulfate from Hüls Aktiengesellschaft, Marl, Germany). About 1000 parts by weight of soft rinse were obtained. .

EXAMPLE 5 In analogy to Example 1, a soft rinse was prepared from the following ingredients. (Quantities stated as parts by weight.) Quantity Component Tap water 791 Citric acid 60 Marlipal 1618/25 (note 1) 15 Armeen MZHT (note 2) 52.5 Marlosoft IQ90 (note 3) 52.5 Myristic acid 15 Perfume 2 Polyethylene glycol 400 2 Calcium chloride (10 % by weight in H 2 O) to the desired viscosity Total approx. 1,000 10 15 20 25 30 500 222 10 Remarks 1. Fatty alcohol ethoxylate having 16 to 18 carbon atoms in the alcohol moiety and 25 ethylene oxide units; from Hüls Aktiengesellschaft, Marl, Germany. 2. See Note 3 in Example 1 3. See Note 2 in Example 1 EXAMPLE 6 In analogy to Example 1, a soft rinse was prepared from the following ingredients. (Quantities stated as parts by weight.) Component Quantity Tap water 674 Citric acid 100 Marlipal 1618/25 '(note 1) 10 Armeen M2HT (note 2) 45 Marlosoft IQ90 (note 3) 150 Myristic acid 15 Perfume 2 Polyethylene glycol 400 2 Calcium chloride (10% by weight in H 2 O) to the desired viscosity Total approx. 1,000 Remarks 1. See note 1 in Example 5 2. See note 3 in Example 1 3. N-methyl-triethanolammonium fatty acid diester methyl sulfate from Hüls Aktiengesellschaft, Marl, Germany 500 222 11 EXAMPLE 7 Analogous to Example 1 a soft rinse was prepared from the following ingredients. (Quantities stated as parts by weight.) Component Quantity Tap water 659 Citric acid. 125 Marlipal 1618/25 (note 1) 10 Armeen MZHT (note 2) _ 30 Marlosoft IQ90 (note 3) 160 Myristic acid 10 Perfume 2 Polyethylene glycol 400 2 Calcium chloride (10% by weight in H 2 O) to desired viscosity Total approx. 1,000 Remarks 1. See note 1 in Example 5 2. See note 3 in Example 1 3. see note 2 in Example 1 Note: Examples 1-5 consist of so-called double concentrate (2 x) while Examples 6-7 consist of so-called quadruple concentrate (4 X)

Claims (1)

1. 0 15 20 25 30 35 500 222 12 CLAIMS 10 Soft rinsing agents in liquid form and comprising a pH adjusting agent, surfactants, one or more fatty acids and water characterized in that it contains _ A) one or more as cationic surfactants in low pH active substances from each of the groups, A1) difetic acid methylamines and A2) imidazine methosulfate, N-methyltriethanolammonium fatty acid diester methyl sulfate, vegetable or animal based quaternary esters and vegetable or animal based methosulfate and B) the fatty dispersant component. Soft rinse aid according to Claim 1, characterized in that it contains as pH-lowering agent a carboxylic acid, preferably citric acid, and in combination therewith a fatty acid such as, for example, mystic acid. Soft rinse aid according to Claim 1 or 2, characterized in that the fatty acid methylamine is a ditallow methylamine. Soft rinse aid according to one of Claims 1 to 3, characterized in that component B) consists of a non-ionic surfactant, preferably a fatty alcohol ethoxylate. Soft rinse aid according to claim 4, characterized in that the fatty alcohol ethoxylate is one having 9-30, preferably 16-18, carbon atoms in the fatty alcohol moiety and having 9-30, preferably 25 ethylene oxide units, soft rinse aid according to any one of claims 1 -5, characterized in that it has a viscosity of 30- 1000 cP (0.03-1 Pas), preferably 50-300 cP. Soft rinse aid according to one of Claims 1 to 6, characterized in that it contains citric acid in a concentration of 5 to 20, in that it contains as component A) A1) a difetic acid methylamine, preferably a preferably 5-10% by weight, ditallow methylamine, in a concentration of 2-10, preferably 3-7,% by weight and A2) a cation surfactant selected from the group consisting of imidazoline methosulfate, N-methyl-triethanol-ammonium fatty acid diester methyl sulfate, vegetable or animal based quaternary esters and vegetable or animal based methosulfate in a concentration of 3-30, preferably 5-15, wt%. . that it contains as component B) a fatty alcohol ethoxylate in a concentration of 0,2-5,0, 0,5-2,0,% by weight and that myristic acid is present in a concentration of 0,5-10, the percentages are calculated on the total weight of the agent. preferably preferably 1-5, wt%, Soft rinse aid according to claim 7, characterized in that the citric acid content is adjusted so that a pH is obtained in value <6.0, preferably below 5.5, the rinsing solution when the agent is used. Soft rinse aid according to Claim 7 or 8, characterized in that the ratio myristic acid: diphthate 500 10. 222 14 acid methylamine, preferably ditallow methylamine, is in the range from 1: 3 to 1: 4. Soft rinse aid according to one of Claims 1 to 9, characterized in that it also contains paint, perfume, preservatives and viscosity control agents.