JPS59221391A - Alpha-sulfo fatty acid ester salt-containing granular detergent composition - 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 provides α-sulfo fatty acid ester salts? The present invention relates to a phosphorus-free granular detergent composition that has a main active ingredient and improved powder physical properties.

In addition to surfactants as active ingredients, granular detergents for clothing usually contain phosphates as builders to enhance detergency.

However, in recent years, the use of this phosphate has been regulated because it is believed that it causes eutrophication in oceans, rivers, and lakes, and there is a trend towards regulating the use of phosphate, which is equivalent to using powder without it. Research has begun on granular detergents that demonstrate their physical properties and detergency.

On the other hand, α-sulfo fatty acid ester salts are attracting attention as detergent ingredients because they are surfactants with excellent detergency and dirt dispersibility, and are resistant to hard water. has problems with its powder properties, such as low fluidity and solidification due to load and moisture absorption during storage. (Japanese Unexamined Patent Publication No. 57-28507), and in combination with soap and polycarboxylic acid salts (Japanese Unexamined Patent Publication No. 57-28507).
Although various proposals have been made, such as Japanese Patent Publication No. 180699), none of them are necessarily satisfactory when compared with granular detergents containing phosphate builders.

The present inventors have conducted extensive research to develop a detergent composition that does not contain phosphates and is comparable to conventional granular detergents in detergency and powder physical properties. It was surprisingly discovered that when alkyl sulfate and polyethylene glycol were blended together with salt, a granular detergent with excellent detergency and good powder physical properties could be obtained, even when phosphate was added. Based on this knowledge, the present invention was made. Specifically, the present invention provides a granular detergent containing α-sulfo fatty acid ester salt as the main active ingredient, based on the weight of α-sulfo fatty acid ester salt. Quantity of carbon number 8-2
0 and 1 to 20% by weight based on the total weight of molecules 1600 to detergent compositions.

α used as the main active ingredient in the composition of the present invention
-Sulfo fatty acid ester salt is a compound represented by the general formula % (1) (in which R1 and R2 are an alkyl group and M is a cation), where R1 has 4 carbon atoms.
-20 alkyl group, and R2 is preferably an alkyl group having 1 to 6 carbon atoms. Such an α-sulpo fatty acid ester salt can be produced by a conventional method using, for example, a fatty acid having 6 to 22 carbon atoms as a raw material, but hydrogenated beef tallow fatty acid and hydrogenated palm oil fatty acid are preferable as the raw fatty acid. In the above general formula, the alkyl groups R1 and R2 may be linear or branched. R2 is preferably a methyl group, an ethyl group, an n-propyl group, or an isopropyl group. Further, the cation M is preferably an alkali metal such as sodium or potassium. Similarly, the alkyl sulfate used in the present invention has 8 to 8 carbon atoms.
It can be produced according to a conventional method using No. 20 higher alcohol as a raw material.

In this case, as the raw material higher alcohol, alcohols derived from natural oils and fats (eg, beef tallow, coconut oil, etc.) can be used, as well as alcohols synthesized from olefins by the oxo method or Ziegler catalyst. Examples of cations include sodium and potassium.

In the granular detergent composition of the present invention, the weight ratio of the α-sulfo fatty acid ester salt and the alkyl sulfate is 5/l.
It is necessary to choose within the range of ~115.

Outside this range, powder physical properties cannot be improved.

Next, the third essential component of the present invention is polyethylene glycol, which has a molecular weight of 800 to 301 OOO1, preferably 1
,000 to 20,000. The blending amount needs to be selected within the range of 1 to 20% by weight based on the total weight of the composition. If the amount is less than this, the particle strength will be reduced, and if the amount is more than this, the cleaning power will be reduced.

In addition to the above-mentioned essential ingredients, the detergent composition of the present invention contains conventional auxiliary additives used in ordinary powdery detergents, such as sodium nitrile acetate, sodium ethylenediaminetetraacetate, zeolite, sodium carbonate, etc. building blocks such as sodium silicate, fillers such as sodium sulfate, anti-recontamination agents such as carboxymethyl cellulose (OMC) and polyethylene glycol (PEG), other stabilizers, enzymatic bleaches, fluorescent brighteners, fragrances, It can contain dyes and the like.

The granular detergent composition of the present invention can also be produced by powder-mixing the α-sulfo fatty acid salt, the alkyl sulfate, and the polyethylene glycol together with other optional ingredients as necessary, but in general, a detergent slurry is first prepared. It is manufactured by preparing and spray-drying it.

Next, the present invention will be explained in more detail with reference to Examples. The particle strength of the granular detergent composition was measured by the following method.

(1) Transport the sample with an airlift adjusted to a particle strength wind speed of 15 m/s,
The change in density of the sample before and after transport was measured and used as a measure of particle strength.

Example 1 Using the ingredients and amounts (parts by weight) shown in the following table by spray drying,
A granular detergent composition was prepared by mixing each component so that the total amount was 100 parts by weight, and the particle strength of each composition was measured.

* Comparative example *1 α-Sulfohated palm oil fatty acid methyl ester sodium *2 Polyethylene glycol (average molecular weight 1.000
), of which 0.5% is sprayed on granular detergent *3 Polyethylene glycol (average molecular weight 6000)
*4 Polyethylene glycol (average molecular weight 20,000
)*5 2% of the A-type zeolite is mixed with granular detergent and soda carbonate powder, then PEG
≠10000.5% is mixed with powder while spraying and coated on granular detergent *6 Mixing the entire amount with granular detergent Patent applicant: Lion Co., Ltd. Agent Agata Ming Procedural Amendment January 6, 1982 1. Indication of the case Patent Application No. 95059 of 1988 2° Invention fl Name: Granular detergent composition containing α-sulfo fatty acid ester salt 3. Person making the amendment Relationship to the case Patent applicant Address: Honjo, Sumida-ku, Tokyo -Chome 3-7 E 54ky
Co., Ltd. Representative: Atsushi Kobayashi 4, Agent: 5th floor, 8th floor, Kawashima Kunishin Building, 2-2-2 Shinbashi, Minato-ku, Tokyo 105, Date of amendment order Voluntary action 8, Contents of amendment (1) Specification Delete "Ya polyethylene glycol (PEiG) J" from the 4th to 5th lines of page 6.

(2) Change "high density change" in the second line from the bottom of page 6 to "
It has been corrected to "Bulk Density Change".

Claims (1)

[Claims] 1. In a granular detergent containing α-sulfo fatty acid ester salt as the main active ingredient, based on the weight of the α-sulfo fatty acid ester salt, an alkyl sulfate having a carbon number of 8 to 20 is 115 to 5 times the amount based on the total weight of the α-sulfo fatty acid ester salt. A granular detergent composition containing an α-sulfo fatty acid ester salt, characterized in that it contains 1 to 20% by weight of polyethylene glycol having a molecular weight of 800 to 30,000'.