JPS598794A - 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 combination with a powder or granule detergent, and more specifically, an additive that is added to a powder or granule detergent, particularly an anionic surfactant-containing powder or granule detergent. The present invention relates to an additive for detergents that imparts excellent flexibility to the cloth to be washed and prevents caking of the detergent at the same time as washing.

Conventionally, when washing clothes at home to make them softer, they are usually washed with a detergent, rinsed with water to remove the detergent components, and then washed with a softener containing a cationic activator such as quaternary ammonium salt. 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 combine cleaning and softening.

Therefore, attention has been paid to the use of powdered quaternary ammonium salts mixed with granular detergents mainly composed of anionic surfactants, which are used in general households. can be granted. Among these, sparingly water-soluble di-long-chain alkyl type quaternary ammonium salts have an excellent softening effect compared to water-soluble mono-long-chain alkyl type quaternary ammonium salts.

However, when this type of di-long-chain alkyl type quaternary ammonium salt powder is added to a normal detergent, the detergent becomes extremely susceptible to caking due to an increase in detergent water content over time, storage humidity conditions, etc.

The inventors of the present invention were inspired by the caking phenomenon of detergents, and as a result of intensive research, they discovered that adding a water-insoluble inorganic substance to a cationic surfactant improves the caking property of detergents. Based on these findings, we have completed the present invention.

That is, the granular detergent additive of the present invention comprises (a) a cationic surfactant and (b) a water-insoluble inorganic substance represented by the following general formula in a mu ratio of (a)/(b) = 199/
It is characterized by containing at a ratio of 1 to 25/75.

(In the formula, R,, R, represents an alkyl group of C1t to Cts, R,, R, is an alkyl group of C1 to C4, a benzyl group, a C1 to C4 alkyl group,
8 to C4 hydroxyalkyl group or polyoxyalkylene group, X is halogen, CH, SO, C, H, So, tfLJcH, -@-8o.

Not shown. ) Specific examples of the quaternary ammonium salt represented by the above general formula (1) include (1) distearyldimethylammonium salt (2)
Dihydrogenated beef tallow alkyldimethylammonium base (3)
Dihydrogenated beef tallow alkylbenzylmethylammonium (
4) Distearylmethylbenzylammonium salt (
5) Distearylmethylhydroxyethylammonium salt (6) Distearylmethylhuman tetraxypropylammonium salt (7) Distearyldihydroxyethylammonium salt, etc. can be exemplified, and counter ions include chloride and zorochloride. Commercially available quaternary ammonium salts contain lower alcohols such as ethanol and propatool, and water, but from the viewpoint of the physical properties (free 70-ability, storage stability) of the resulting detergent additive, it is better to use as little as possible. preferable.

Specific examples of the water-insoluble inorganic substance (b) include Ca-type inorganic salts such as calcium carbonate and calcium sulfate, talc, sage, diatomaceous earth, amorphous silica, colts, kaolin, and sericite.

The ratio of (a) quaternary ammonium salt and (b) water-insoluble inorganic substance in detergent addition = (a) / (b) = 1
99/1 to 25/75. If this value is larger than 199/1, the caking property of the detergent cannot be improved;
5/7! When it is smaller than S, the antistatic effect deteriorates.

In the detergent additive, both components (a) 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 spray-cooling or cooling, solidifying, crushing, and granulating a mixture of a heated and molten quaternary ammonium salt and a water-insoluble inorganic powder.

The average particle size of the additive particles is preferably 500 μm or less. If the particle size becomes large, it is not only difficult to uniformly impart a softening effect to the surface of the object to be washed, but also the additive particles may sometimes adhere to the object to be washed in their original form after washing. do not have.

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%, preferably 0.5 to 10% as a quaternary ammonium salt to the detergent. If it is less than 0.1%, the softening effect will not be sufficient, and if it exceeds 20%, the detergency and foaming will be reduced.

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

According to the detergent additive of the present invention, when used together with an anionic surfactant, it is possible to impart excellent flexibility to the cloth being washed, and moreover, it is possible to effectively prevent the caking property of the detergent. .

Example 2 Hydrogenated beef tallow alkyldimethylammonium chloride (Arcard 2HT, purity 91%) powder was melted at 1,000 ml, water-insoluble inorganic powders shown in Table 1 below were added on each side, and the mixture was kneaded for 10 minutes. Thereafter, it was cooled to room temperature, and the obtained block was pulverized to obtain granules 7ji with an average particle size of 250μ.
: The detergent additive of the present invention was obtained.

Next, these detergent additives were added to a granular detergent having the following composition and washed, and the effect of imparting flexibility to cloth and the caking property of the detergent were measured.

Composition of granular detergent Linear alkylbenzenesulfonic acid sodium (C1l alkyl) 20wt% Sodium silicate 10wt% Soda carbonate 10wt% Zeolite) (Type A,
Average particle size 2μ) 20wt% calxexymethyl cellulose 0.7wt% soap (beef tallow fatty acid)
018wt% sulfur soda, water
Test of balance flexibility imparting effect Acrylic jersey cloth 90J? x 2 rope towels 80.9 x 2 pieces cotton-cloth
50&X4 pieces cotton knitted cloth
After washing the test cloth made of 851/X4 cutting for 15 minutes using the above granular detergent and 60C tap water,
Pre-treat the test fabric with Ugly three times for 3 minutes each using tap water at C. Next, this test cloth was placed in a jet-type household electric washing machine, and was washed using the above-mentioned granular detergent, each additive composition, and 25C tap water at a detergent concentration of 0.13% and a bath ratio of 30 times. After washing for 10 minutes, dehydrating for 1 minute, moistening with 25C tap water for 3 minutes, and dehydrating for 1 minute, the procedure was repeated twice. Afterwards, the test fabric was air-dried for 24 hours and then 25C16
The air-dried test fabric was conditioned under conditions of 5% RH.

A nylon tri-foot cloth was taken out of the test cloths thus obtained, and its feel was judged by five judges, and the flexibility imparting effect of the additive composition was evaluated based on the average of the five judges. The feel was evaluated using the following criteria in comparison with the feel of a nylon tricot cloth obtained by the same procedure as above except that no additive composition was used.

Old-fashioned and soft 5 points Quite soft 4 points Soft 3 points Slightly soft 2 points Slightly soft 1 point Detergent caking test Take 1300g of detergent into a carton and use 35C-85%RH.
It was stored in a constant temperature room for 40 days in which cycles of 16 hours and 2+5C-60%RH 8 hours were repeated, and the weight of the solidified portion after storage was measured to determine the caking rate.

(hereinafter referred to as Kinpaku) 2A1 Table (1) The ratio is the ratio of quaternary ammonium field/water-insoluble inorganic substance.

(2) The blended amount is the blended layer of the detergent additive based on the 4-edge ammonium base relative to the granular detergent.

(3) A2 does not contain the water-insoluble inorganic substance (b) or is processed.

Claims (1)

[Claims] 1. (a) General formula (1) (wherein R1 and R1 represent a C□-C86 alkyl group, Rs * R4 represents a C1-C4 alkyl group, a benzyl group, a C1-C4 alkyl group, C4 represents a hydroxyalkyl group or a polyoxyalkylene group, X represents a halogen, CH, So, C, H, 804 or CH, -@-SO.) A cationic surfactant represented by ( b) water-insoluble inorganic substance, weight ratio (a) / (b) = 199/1
A granular detergent additive characterized in that it contains in a proportion of 25,775 to 25,775.