JPH02145699A - High-density granular concentrated cleaning agent composition - Google Patents

Abstract

PURPOSE:To obtain the title composition containing an anionic surfactant and inorganic builder as well as a specific dicarboxylic acid based surfactant and having excellent dispersing and dissolving properties also in cooled water. CONSTITUTION:The aimed composition containing (A) 30-50wt.% anionic surfactant, (B) 40-60wt.% inorganic builder and (C) 1-10wt.% one or more kind of dicarboxylic acid based surfactant selected from compounds expressed by formula I-formula III [R1 is 8-18C alkyl or alkenyl; R2-R5 are -(CH2CH2O)n(CH2)m- group (m is 1-5; n is 0-5)) which may have a branched chain; M is H, alkali (earth) metal or alkanol methane].

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a high-density granular concentrated detergent composition, and more particularly to a high-density granular concentrated detergent composition that has excellent dispersion and solubility even in cold water.

[Problems to be solved by conventional techniques and inventions] Conventionally,
The mainstream of powdered detergents has been low-density products obtained by spray drying. In recent years, there has been an increasing demand for compact, high-density detergents from the viewpoint of resource conservation, detergent transportation, and convenience for housewives in terms of carrying and storing detergents.

However, because true-density detergents are highly dense, they have problems that conventional low-density detergents do not have.

The most important problem is that the solubility is inferior to that of low-density detergents, and many studies have been conducted to solve this problem (Japanese Patent Application Laid-Open Nos. 48-61511 and 58-1320).
93, 62-167398, 62-253699,
60-96698, 61-272300, 62
-161898, No. 61-246300, No. 60-1
35498 publications, etc.).

However, the dispersibility and solubility of such high-density powder detergents is still insufficient. In the examples described in JP-A No. 58-132093 and JP-A No. 60-135498, although some effects are recognized, detergents cannot be used in cold water such as those used for winter boat fishing in Japan. Under conditions where Particle Bodan is left for a certain period of time without being subjected to relatively large mechanical forces (fully automatic washing machines), its dispersion and solubility are still insufficient, and a fundamental solution has not yet been reached. not present.

[Means to solve the problem]

As a result of intensive research by the present inventors to solve the above problems,
The inventors have discovered that the above problems can be solved by incorporating a specific amount of a dicarboxylic acid surfactant into a detergent, and have completed the present invention.

That is, the present invention provides a high-density granular concentrated detergent composition containing 30 to 50% by weight of an anionic surfactant and 40 to 60% by weight of an inorganic builder. is a straight or branched chain with 8 to 1 carbon atoms
8 represents an alkyl group or alkenyl group, RZ+ R
3, R4, R, may have a branched chain (C) 12C1
hO), (C1(2), - group (m=1~5.n=
0 to 5), and h represents hydrogen, an alkali metal, an alkaline earth metal, or an alkanolamine. The present invention provides a high-density granular concentrated detergent composition containing 1 to 10% by weight of one or more dicarboxylic acid surfactants selected from the compounds represented by the following formulas.

The dicarboxylic acid surfactant used in the present invention is a compound represented by the above general formula (I), (II) or (III). The alkyl group or alkenyl group represented by R in these formulas has 8 to 18 carbon atoms, particularly 10-14
A range of is preferred. If the number of carbon atoms is less than 8, the cleaning performance will be low (and if it exceeds 18, it will adversely affect the stability and rinsability of the composition, so it is not preferable. In addition, R6 in the formula can be either an alkyl group or an alkenyl group. Although possible, alkenyl groups are particularly preferred from the viewpoint of stability at low temperatures.Furthermore, the group in the above formula is hydrogen, an alkali metal, an alkaline earth metal, or an alkanolamine, but from the viewpoint of stability and ease of adjustment, alkenyl groups are preferred. Alkali metals such as sodium and potassium are particularly preferred.

Specific examples of dicarboxylic acid surfactants used in the present invention are as follows.

The compounds represented by formula (1) include 2-decenylsuccinic acid, 2-dodecenylsuccinic acid, 2-tetradecenylsuccinic acid, 2-hexadecenylsuccinic acid, 2-octadecenylsuccinic acid, decyl (linear or branched) succinic acid, dodecyl (linear or branched) succinic acid, tetradecyl (linear or branched) succinic acid, hexadecyl (linear or branched) succinic acid, octadecyl (linear or branched) ) succinic acid, oleylsuccinic acid, etc., as compounds represented by the formula (II), disodium N-nonanoyl (linear or branched) iminodiacetate, N-dodecanoyl (linear or branched) iminodi-acetate,
(monooxyethylene)propionate disodium, N
-octadecanoyl (linear or branched) iminodi-(trioxyethylene)acetic acid disodium, etc., and (III
) Compounds represented by the formula include disodium N-dodecenyliminodiacetate, disodium N-octyl (linear or branched) iminodiacetate, and N-hexadecyl (linear or branched) iminodiacetate. Examples include disodium (trioxyethylene)acetate.

In the present invention, any of the compounds represented by the above general formula (1), (II) or (III) can be used as the dicarboxylic acid surfactant, but from the viewpoint of stability of the composition etc., the general formula ( Compounds 1) are particularly preferred.

General formula (1), (II) or (
The content of the dicarboxylic acid surfactant represented by I[[] is 1 to 10% by weight, preferably 2 to 10% by weight,
More preferably, it is 3 to 7% by weight. If it is less than 1% by weight, sufficient dispersion and solubility effects cannot be obtained, and if it exceeds 10% by weight, the tackiness of the sprayed dough will increase and the manufacturing suitability and physical properties of the obtained powder will deteriorate, which is not preferable.

The anionic surfactants used in the present invention include alkyl benzene sulfonates, alkyl sulfates, alkyl ethoxy sulfonates, paraffin sulfones Mtn, α
-Olefin sulfonate salts, α-sulfo fatty acid ester salts, higher fatty acid salts, and the like, and examples of the salts include sodium salts and potassium salts. These anionic surfactants are blended in the composition in an amount of 30 to 50% by weight.

Examples of inorganic builders to be incorporated into the high-density granular concentrated detergent composition of the present invention include sodium silicate, soda carbonate, potassium carbonate, sodium sulfate, and zeolite, which are incorporated in an amount of 40 to 60% by weight in the composition. Ru. From the viewpoint of solubility, the total amount of sodium carbonate, potassium carbonate and sodium sulfate among these inorganic builders is preferably 20% by weight or less, preferably 15% by weight or less.

The dense granular concentrated detergent composition of the present invention may contain other ingredients, such as nonionic surfactants such as polyoxyethylene alkyl ethers, higher fatty acid alkanolamides, polyoxyethylene alkyl ethers, and cationic interfaces such as quaternary ammonium salts. Activators, organic hilders such as nitrilotriacetate, ethylenediaminetetraacetate, citrate,
Recontamination inhibitors such as carboxymethyl cellulose and polyacrylates, enzymes such as protease, cellulase, amylase, and lipase, reducing agents such as sulfites, bleaching agents such as sodium percarbonate and sodium perborate, and common detergent ingredients such as fragrances. can be mixed as needed.

There are no particular limitations on the method for producing the high-density granular concentrated detergent fabric of the present invention, but for example,
The method disclosed in Japanese Patent Publication No. 1, or JP-A-61, in which an alkali agent and an acid-resistant detergent component are added to an unneutralized anionic surfactant to neutralize it, and then zeolite or the like is added and crushed.
-The non-spray drying manufacturing method shown in Publication No. 272300,
It can be manufactured by a method of increasing the bulk density by granulating a powdered detergent by spray drying.

Among these, the spray drying granulation method is preferred.

The particle size of the high-density granular concentrated detergent fabric of the present invention is usually 40 to 2
000μ is preferable, and it is particularly desirable that it is in the range of 125 to 2000μ.

〔Effect of the invention〕

The high-density granular concentrated detergent composition of the present invention has excellent effects on dispersibility and solubility at low temperatures in winter.

〔Example〕

EXAMPLES Hereinafter, the present invention will be explained in more detail with reference to examples, but the present invention is not limited by the following examples.

Example 1 (1) Detergent manufacturing method Among the detergent ingredients shown in Table 1, 50% by weight of hydrated bone is obtained by excluding 10% by weight of Zeo 94 and components that are preferably dry mixed later, such as enzymes in small amounts. Prepare a slurry of
The powder obtained by spray-drying it is put into a high-speed mixer (stirring transfer granulator, manufactured by Fukae Kogyo Co., Ltd.),
Add 5% by weight of zeolite moistened with 1% by weight of water and granulate it, then add 3% by weight of zeolite and granulate it. To the resulting particles, add the remaining 2% by weight of zeolite and a small amount of additives. By dry mixing, the bulk density is 0.70-0.8
Various high-density granular concentrated detergents of 0 g/cJ were obtained (here, the water in the zeolite moistened with water added during granulation acts as a granulation binder; It acts as a carrier and as a granulation aid that suppresses the formation of coarse particles together with the zeolite that is added subsequently.The zeolite that is dry-mixed at the end is used to improve the fluidity and anti-caking properties of detergent particles. (All of these zeolites are in fine powder form) (2) Measurement of detergent content tPz solubility ■Hitachi fully automatic washing machine 2.8 kg Aozora PF-2650
Place 60g of detergent at one end of the bottom of the washing tub using
Add 3 kg of clothing (60 parts by weight of cotton underwear and 40 parts by weight of a polyester/cotton blend dress shirt) on top of it, and pour tap water at the specified temperature at a flow rate of 8 P/min to avoid direct contact with the detergent. , Slowly pour water over 5 minutes until the temperature reaches 40 f. Then, start stirring and after stirring for 3 minutes,
Stop stirring, drain the water, and after 3 minutes of dehydration, visually determine the amount of detergent remaining on the clothes and in the washing tub. The judgment criteria are shown below.

○: No residual detergent ◎: Slightly small particles of residual detergent Δ: Many small particles of residual detergent or a few lumps of residual detergent ×: Considerable lumps of residual detergent In this measurement method, the detergent particle population is During water injection, it is exposed to water for 5 minutes with almost no physical mechanical force, and after the water penetrates, it is subjected to mechanical force due to stirring.

Note) Umbrella 1 Umbrella 2 Ne 3 Ne 4 5 6 7 : Comparative product LAS-Na salt: Linear alkyl (Cl 2 + I z) To the sodium salt of benzenesulfonic acid 5-Na salt: Alkyl (C,4- ts) Sodium sulfate soap: Beef tallow (-6 to 18) fatty acid) IJ umnonion: Polyoxyethylene ('P' = 13) alkyl (C
32~+3) Ether Cl2JSA-Na: Cl2-14 sodium alkenyl succinate ClzJS8-K: C+z~. alkenyl succinic potassium

Claims (1)

[Claims] A high-density granular concentrated detergent composition containing 30 to 50% by weight of an anionic surfactant and 40 to 60% by weight of an inorganic builder, comprising general formula (I), (II) or (III) ▲ There are mathematical formulas, chemical formulas, tables, etc. ▼ (I) ▲ There are mathematical formulas, chemical formulas, tables, etc. ▼ (II) ▲ There are mathematical formulas, chemical formulas, tables, etc. ▼ (III) (In the formula, R_1 indicates a straight or branched chain. carbon number 8~
18 alkyl group or alkenyl group, R_2,
R_3, R_4, R_5 may have a branched chain -(C
H_2CH_2O)_n(CH_2)_m-group (m=1
~5, n=0~5), M is hydrogen, an alkali metal,
Represents an alkaline earth metal or an alkanolamine. ) A high-density granular concentrated detergent composition containing 1 to 10% by weight of one or more dicarboxylic acid surfactants selected from the compounds represented by the following.