JPS5854074A - Soft rinse agent for washing - 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 A class of cationic quaternary ammonium compounds, when added to the final rinse bath of a washing machine, can impart improved handling to a variety of textiles, such as cotton, wool, and cotton-synthetic-mix fabrics. It is known that at the same time it provides antistatic properties. However, it is difficult to prepare the highly concentrated formulations (2) of these soft rinses and to uniformly disperse them in the cold rinse water, since soft rinses can be used in concentrated surface water or alcohol-based formulations. If added in the form of a liquid solution, a gel-like precipitate will form, which can stain the items being washed.

It is also difficult to dilute a concentrated solution like O to a commercially available 2-5% concentration formulation. Usually difficult to disperse in cold water11
An irresolvable gel-like mixture is obtained.

Therefore, up to now, cleaning agents have generally been used in the form of dilute aqueous solutions with a concentration of about 2 to 10%. However, dilute solutions have various drawbacks. For example, if it is stored in the cold, it will form a liquid, and after freezing and thawing again, it will take on the consistency of a gel and can no longer be converted into a homogeneous solution. Another disadvantage is that the water content of this dilute solution is unnecessarily high.

It has now been discovered that it is possible to prepare a concentrated liquid formulation of a cleaning agent that does not have the disadvantages of these dilute solutions and is also easily dispersible in cold rinse water.

Accordingly, the present invention relates to the general formula 1 in which methyl represents a branched alkyl or alkenyl each containing 12 to 30 carbon atoms, in particular 14 to 18 carbon atoms; R2 represents C4 to C4-alkyl. and A represents an anion) and optionally with other auxiliary materials.

The quaternary ammonium compounds of the above general formula are obtained by customary methods starting from methyl-branched fatty acids. Amides are prepared from this acid with ammonia and nitriles are prepared from these amides, which are converted to dialkylamines by hydrogenation. This dialkylamine is then alkylated (4) and quaternized using known methods. A methyl-branched alkyl or alkenyl group is a mixture of isomers with methyl groups in various positions. Preferred anions are chloride ion,
Methosulfate ion, ethosulfate ion, methophosphate ion or ethophosphate ion.

Methyl is preferred as R2.

Preparing the liquid soft rinse according to the invention/Case 1.
Preference is given to using the cationic softening compounds in the form of concentrates with lower alcohols, especially isopropanol, or with mixtures of these alcohols and water.

The soft rinse agent according to the invention in this case contains a certain amount (approximately 5 to 60% by weight) of such lower alcohols. The soft rinse agent according to the invention contains common non-ionic dispersants or emulsifiers based on oxyalkylates which serve to make the soft rinse agent easily dispersible in cold water. You can also do that. Suitable nonionic dispersants include (5) for example about 2 to 12 moles of ethylene oxide in each case;
with alkylphenols e.g. xylenol, 8 to 10
reaction products with alkylphenols having long alkyl groups containing 8 to 15 carbon atoms, especially about 5 to 8 mol of [
0 and 1 mole of alkylphenol or 8 to 15
It is the reaction product with 1 mole of fatty alcohol containing 5 carbon atoms or with a mixture of such fatty alcohols. The amount of these nonionic compounds is 3 to 10% in the case of a soft rinse agent with a low concentration of the compound of formula 1, about 10 to 60% by weight.

A high-concentration soft rinse agent for washing in which the concentration of the compound of general formula 1 is about 30 to 70% by weight is about 5 to 20% by weight.
It is preferable to contain a nonionic dispersant with severe tremors. In the case of dilute commercial soft rinses, the addition of such dispersants is not necessary.

Furthermore, such a highly concentrated cleaning agent (6) may further contain 5 to 30% by weight of ethylene glycol, propylene glycol, polyethylene glycol, polyglobylene glycol, or C1 to 30% of these compounds. Preference is given to containing C4-alkyl ethers. It is clear that among this group of products only liquid compounds are suitable. These compounds exhibit a solubilizing effect in the soft rinse agent for washing according to the invention.

The soft rinse agent according to the invention can be manufactured by simply mixing the ingredients or concentrated solutions thereof. If appropriate, fragrances, dyes, lightening agents and other auxiliary materials may be added. If appropriate, it is further diluted with the required amount of water to obtain the desired final concentration. The amounts of the individual components are within the ranges stated above, so that the finished agent is
100ml, including additional amounts of water, fragrance and dye, if any.
It is selected so that the weight is 0%.

Use of the soft rinse agent for washing according to the present invention (7) The amount is such that the concentration of the compound of general formula 1 is 2 to 10% by weight,
80 to 150 moths per wash (approximately 4 kg) filled in the washing machine for 10 to 30% by weight and 30 to 70g% of soft rinse agent, respectively;
It will be 30 to 70 cm and 10 to 20 m1.

The soft rinse rinse according to the invention exhibits sufficient softening properties and can be easily dispersed in cold water without interfering gel formation. The advantage in this regard is that the concentrated liquid can be introduced directly into domestic machines using suitable dosing equipment. In order to obtain sufficient solubility in the washing machine, the concentrate according to the invention can also be diluted only immediately before being placed in the washing machine. Soft rinse agents for washing can be marketed not only in concentrated form and as dilute aqueous solutions. For this reason, it is no longer necessary to transport large amounts of water during all stages of marketing, which are ultimately unnecessary.

Hereinafter, the present invention will be explained in more detail by giving examples (8
).

! 400 in a stirred flask equipped with a thermometer and a gas inlet tube.
To g of isostearonitrile was added 20 y of Raney nickel. Then, 100 liters of hydrogen per hour was passed through.

The reaction temperature was increased to 160° C. over about 30 minutes and held for 1.5 hours.

After cooling to about 50° C., the catalyst was separated and diinstearylamine was obtained in virtually quantitative yield. The reaction product contains 92.3% secondary moi
It contained 4.79 primary and 3% tertiary amine moieties.

Production of lido 126 g of diisostearylamine and 50% NaOH2
5 g together with 100 g of isopropanol were reacted with 28 g of liquid methyl chloride in 11 glass autoclaves. The pressure of methylchloride was then approximately 5 bar. After a reaction time of approximately 2 hours, a further 1 g of 50% NaOH was added and the reaction was continued for a further 1.5 hours at 80'C.

After releasing the excess methyl chloride, the pH of the reaction mixture was adjusted to 6-7 and the remaining methyl chloride was removed on a rotary evaporator. The precipitated NaCl was removed by suction and 8g
of water and 15g of isopropanol, approximately 15g of isopropanol is added.
og diisostearyldimethylammonium chloride was obtained as a 75% d solution in Impropatol/Water (1:2).

Next, some representative formulations of soft-injection agents according to the present invention will be described.

1. Commercial dilute washing after-treatment agent 5% by weight of the compound of the following formula R4==Isostearyl 00) Add water, fragrance, dye and emulsifier to make a total amount of 100% Usage amount: Full load of washing machine (full 1 load) )
To (4#), add 100 lO 2 of this mixture, 20% by weight of concentrated washing soft rinse, compound R1-isostearyl water, fragrance, dye and emulsifier to make the total amount 100%.Amount used: Washing 9. 20m of this concentrated liquid for the full p-do (4#) K of the machine.

5 Very concentrated soft rinse agent for washing 67% by weight of the compound of the following formula (11) R1==isopargotyl 10% by weight of nonylphenol + 6 molecules of ethylene oxide (emulsifier) 20% by weight of diethylene glycol 3% by weight of fragrance used Amount: 5-20ml for a full load of the washer.

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Claims (1)

[Claims] 1. General formula 1 (wherein R1 represents a methyl-branched alkyl or alkenyl each containing 12 to 30 carbon atoms, especially 14 to 18 carbon atoms; R2 represents C1 to C4- alkyl; and A represents an anion) and, optionally, other auxiliary materials. Claim 1 comprising an aqueous solution or dispersion containing 2.2 to 3% by weight of a compound of general formula 1 and 0.1 to 3% by weight of a nonionic dispersant. Liquid soft rinse agent. (1) Technique The invention of claim 1 consists of an aqueous solution containing 10 to 30% by weight of a compound of general formula 1 and 3 to 10% by weight of a nonionic dispersant. Liquid washing soap described in item 1) IJ rinse agent. 4, 30 to 70% by weight of the compound of general formula 1, 5 to 20% by weight of a nonionic dispersant, 5 to 30% by weight of C1-C5-alkanol, and 45 to 30% by weight of a liquid liquid. 2. A liquid soft rinse agent for washing according to claim 1, which comprises an aqueous solution or dispersion containing glycol, polyglycol, or an alkyl ether thereof.