JPS596296A - Additive for granular detergent - 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 an additive that is used in a powder or granular detergent, and in particular, by adding it to a powder or granular detergent containing an anionic surfactant, the additive can be added to a powder or granular detergent containing an anionic surfactant to prevent washing from occurring at the same time. This invention relates to detergent additives that give washed fabrics softness and excellent feel even after repeated washing.

Traditionally, when washing clothes at home to make them softer, they are usually washed with a detergent, rinsed off with plenty of water, and then treated with a softener containing a cationic activator such as a quaternary ammonium salt as the main ingredient. A method of processing by adding a finishing agent is adopted.

However, performing washing and softening separately in this way requires extra time and effort, and consumers are demanding detergents that both clean and do not soften.

Di-long-chain alkyl-type quaternary ammonium salts, which are poorly water-soluble, have superior softening and antistatic effects compared to water-bathable mono-long-chain alkyl-type quaternary ammonium salts, and when used with detergents, This method is more effective for hydrophobic fibers such as nylon and polyester than for hydrophilic fibers such as cotton. Household detergents generally have an anionic surfactant as their main component, and when a quaternary ammonium salt is added during washing, this quaternary ammonium salt forms a conjugate with the anionic surfactant on the surface of hydrophobic fibers, and even after washing. Remains on fabric surface.

However, when hydrophobic fibers are repeatedly washed with such detergents, the above-mentioned composites are adsorbed and accumulated on the hydrophobic fibers without falling off every i+1 wash, and eventually become sticky when touched by hand. This is not desirable.

The present inventors investigated the mechanism of adsorption of cationic surfactants to synthetic fibers to be washed in the presence of anionic surfactants, and as a result, we discovered that cationic surfactants and fatty acid alkylols The inventors have discovered that the adsorption of synthetic fibers onto synthetic fabrics during repeated washing can be improved by using them in combination with amide, and have completed the present invention.

That is, the granular detergent additive of the present invention comprises (a) a cationic surfactant represented by the following general formula (1), and (b)
Fatty acid alkylolamides whose fatty acid residues have an average carbon number of 10 to 2o are expressed as (,)/(b) =
It is characterized by containing at a ratio of 199/1 to 1/1.

(In the formula, s RI I R1 represents an alkyl group of C1! to cte, R1t R4 represents an alkyl group of C1 to C, benzyl 4, a hydroxyalkyl group of Ct to C4, or a polyoxyalkylene group, and X is a halogen , CH, So, , C, H, So4 or CH,% So3.) Specific examples of the quaternary ammonium salt represented by the above general formula (1) include (1) distearyldimethylamsonium salt ( 2) Dihydrogenated beef tallow alkyl dimethyl ammonium salt (3) Cis dehydrogenated beef tallow alkyl benzyl methyl ammonium salt (4) Cis dearyl methyl pendyl ammonium salt (5) Distearylmethyl hydroxyethylammonium salt (6) Cyste "allylmenarhito'" Examples include roxyglobyl ammonium salt (7) distearyl dihydroxyethylammonium salt, and counter ions include chloride,
Examples include promid. Note that commercially available quaternary ammonium salts contain lower alcohols such as ethanol and furopanol, and water, but from the viewpoint of the physical properties (free flow properties, storage stability) of the resulting detergent additive, it is preferable that the amount is as small as possible.

Specific examples of the fatty acid alkylolamide that is component (b) include lauric acid, coconut fat h2. Mh fatty acid monoethanolamide, jetanolamide, and monoisopropanolamide such as myristic acid and stearic acid are suppressed. From the viewpoint of the physical properties of the additive (free-flow properties, storage stability), in the case of coconut fat diethanolamide, which is liquid at room temperature, it is recommended to reduce the amount of 1-diethanolamide, or to use a powder-based physical property improver. There is.

(1k) quaternary ammonium salt and (b) in detergent additives
) The ratio of fatty acid amylylamide to (a) heptavalent)
=199/1 to 1/1. If this value is greater than 199/1, the stickiness of synthetic fibers during repeated washing cannot be improved, and if it is less than 1/1, the antistatic effect cannot be exhibited.

In the detergent additive, both components (a), j, and (b) are preferably mixed as uniformly as possible, and both components are preferably mixed and granulated to form a granular detergent additive. This can be obtained, for example, by mixing a quaternary ammonium salt and a fatty acid alkylolamide in a heated molten state, and pulverizing and granulating the mixture after spray cooling or cooling assimilation.

The additive particles preferably have an average particle diameter of 500/Am or less.

If the particle size is large, it will not only be difficult to apply a uniform softening effect to the surface of the item to be washed, but also sometimes after cleaning is completed.
Additive particles may adhere to the items to be washed, which is undesirable.

The amount of the additive of the present invention to be added to the detergent is preferably in the range of 0.1 to 20 cm, preferably 0.5 to 10 cm, as a quaternary ammonium salt. If it is less than o or i%, the softening effect will not be sufficient, and if it exceeds 20% by weight, the detergency and foaming will be reduced.

The detergent additive 1 of the present invention is used by being added and mixed in advance with a powder or granular detergent, especially a powder or granular detergent whose main component is a 1-ionic surfactant, but it can be used alone without being used in combination with a detergent. You can also use

According to the detergent additive of the present invention, even when used together with an anionic surfactant, it is possible to impart non-softness to the washed cloth without causing stickiness even after repeated washing.

Example Dihydrogenated beef tallow alkyldimethylammonium chloride (Alucard 2HT, purity 91%) powder was melted at 100°C, and various fat alkanolamides shown in Table 1 below were added and kneaded for 10 minutes. Thereafter, the block was cooled to room temperature, and the resulting block was crushed to leave granules with an average particle diameter of 250μ to obtain a detergent cooling agent of the present invention.

Next, these detergent additives were added to a granular detergent having the composition shown below, and washing 412 was carried out, and the effect of imparting flexibility to cloth was measured.

Composition of granular detergent Linear alkylbenzenesulfonic acid sodium (CI! alkyl) 20wt% Sodium silicate 1
0wt% charcoal soda 10wt
(%) (A type, average particle size 2μ) 2
0 wt thicarboxymethylcellulose 0
．． 7wt% soap (beef tallow fatty acid) 0.
8wt% Soap Soda, Water Balance Flexibility τj Effect Test Nylon tricot cloth (30 denier) 30!
! x4 sheets acrylic jersey cloth 90g
2 cotton towels 8 (l)
x2 pieces of cotton bleached cloth 5
．． A test cloth consisting of 4 pieces of 0p x 85# cotton knitted cloth was washed for 15 minutes using the above-mentioned detergent and tap water at 60°C, and then rinsed three times for 3 minutes each using tap water at 60°C. Pre-treat the test fabric with 'if. Next, this test cloth was placed in a jet-type household electric washer, and ii
Using the granular detergent described in J, each additive composition, and tap water at 25°C, the detergent concentration was 0.13% and the bath ratio was 30 times.
The procedure of washing for 1 minute, dehydrating for 1 minute, rinsing with running water at 25° C. for 3 minutes, and dehydrating for 1 minute was repeated twice. After that, the test fabric was air-dried for 24 hours, and then heated at 25°C and 65cm R.
The air-dried test fabric was conditioned under conditions of H. This operation was repeated 10 times.

A nylon tricot cloth was taken out from the test cloths obtained in one operation, its feel was judged by five judges, and the flexibility imparting effect of the additive composition was evaluated from the average of the five judges. did. This feel evaluation was performed using the same method as above, except that no additive composition was used.
The feeling of leaking nylon tricot cloth was set to zero, and the comparison was made using the following criteria.

Significant vermilion 5 points Quite light 4 points Vermilion 3 points Slight vermilion 2 points Slight cauldron 1 point On the other hand, nylon tricot was obtained from the test fabric obtained by repeating the Fvr operation 10 times. Take out the cloth and feel it
The stickiness of the additive composition to the cloth to be washed was evaluated based on the average of the five judges. In addition, this feel evaluation was performed based on the following criteria based on the comparison with the feel of the nylon tricot cloth obtained with the same hand +11d as above, which was exactly the same as above except that the N5 machining composition was not used. - It was.

Extremely sticky 3 points Sticky 2 points Slightly sticky 1 point (Margin below)

Claims (1)

[Claims] 1. (A) General formula (J) (wherein, R1t R2 represents an alkyl group of Ctt to C!, R,, R4 represents a C1 to C4 alkyl group, a benzyl group, It represents a C7-C4 hydroxyalkyl group or a polyoxyalkylene group, and X represents halogen, CH, So, , C, H, So4 or CHlbeφ)so. ) and (b) a fatty acid alkylolamide whose fatty acid residues have an average carbon number of 10 to 20 = M = ratio (a) / (b) = 199/1
A granular detergent additive characterized in that the additive is contained in a ratio of ~1/1.