JPS63265999A - High-density, particulate and concentrated detergent composition - Google Patents

Abstract

PURPOSE:To improve the color of a high-density and concentrated detergent powder, by mixing an alkylbenzenesulfonate, an olefinsulfonate and a particular fluorescent brightener. CONSTITUTION:A high-density, particulate and concentrated detergent compsn. having a bulk density of at least 0.5g/cm<3>, which comprises an alkylbenzenesulfonate (a) and an olefinsulfonate (b) in a component (a) to component (b) ratio of 1/3-8/1 and a total amt. of 25-50wt.% and at last one fluorescent brightener selected from among the compds. of formulae I-IV in a total amt. of 0.01-1wt.% In the formula I, R1 is a compd. of formula I or II; and R2 is a group such as -NHCH2CH2OH, -NH2, -OCH3, or -NHCH3. In general, a high-density, particulate and concentrated detergent prepd. by crushing and granulation is poor in particularly color. However, the application of the title detergent compsn. enables the preparation of a detergent having whiteness comparable with that of the conventional detergent powder.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a dense granular concentrated detergent. More specifically, the present invention relates to a high-density granular concentrated detergent with improved detergent powder color.

[Conventional technology]

In recent years, demand for high-density powder detergents has been increasing from the viewpoint of resource conservation, detergent transportation, and convenience for housewives in terms of carrying and storing detergents.

High-density powder detergents are disclosed in JP-A-48-61511, JP-A-53-36508, and JP-A-58-13209.
Although these are disclosed in Publication No. 3, etc., all of them relate to the general composition, manufacturing method, or solubility improvement of high-density powder detergents, and none of them relate to the problem of fabric color of high-density powder detergents.

[Problem that the invention seeks to solve]

High-density granular concentrated detergents (high-density here refers to those with a bulk specific gravity of 0.5 g/cm3, preferably 0.6 g/cm3 or more) are different from conventional low-density detergents (generally having a bulk specific gravity of 0.5 g/cm3 or more).
The content of active ingredients such as surfactants is increased and the amount of inorganic salts is reduced to the necessary minimum compared to the powder (approximately 3g/cm'), but reducing the amount of inorganic salts worsens the color of the powder. There is a tendency.

If the color of the powder deteriorates, it will reduce the product value and
When washing white clothing, etc., the image of whiteness after washing may also be negatively evaluated. Therefore, it is necessary to make the powder of high-density granular concentrated detergent white in color.

c. Means for Solving Problems] As a result of intensive studies, the present inventors have found that high-density concentration can be achieved by using two specific activators in combination and a specific fluorescent brightener. The present invention was completed by discovering that the color of detergent powder can be improved.

That is, the present invention provides a high-density granular concentrated detergent having a bulk density of 0.5 g/cm3 or more, including (al alkylbenzene sulfonate and (b)
Contains olefin sulfonate in a weight ratio of (a)/(b) of 1/3 to 8/1 and a total amount of 25 to 50% by weight, and further contains (c)
One or more selected from the group consisting of fluorescent brighteners represented by the following formulas (I) to (IV) and a fluorescent brightener represented by formula (V) in a total amount of o, oi Provided is a high-density granular concentrated detergent composition, characterized in that it contains .

The component (a) used in the present invention has an average carbon number of 10
Linear or branched alkylbenzene sulfonates having ~16 alkyl groups are preferred, and component ('b) is preferably olefin sulfonate having an average of 10 to 20 carbon atoms per molecule.

Olefin sulfonates are salts of neutralized hydrolysates of sulfonated products of α-olefins, vinylidene olefins, or inner olefins, and include hydroxyalkanesulfonates in addition to alkenesulfonates. Examples of the salt include sodium salt and potassium salt.

The weight ratio of component (a) and component (b) is (a)/(b) =
It needs to be in the range of 1/3 to 8/1. (a
) / (If bl is less than 1/3 or more than 8/1, a high-density granular concentrated detergent with good powder color cannot be obtained. Component (a)
) and component ('b) in a total amount of 25 to 50% in the composition.
It is blended.

The present invention further includes a fluorescent brightener selected from the group consisting of fluorescent brighteners represented by formulas (1) to (IV) (hereinafter referred to as group (A)) and a fluorescent brightener of formula (V). It is necessary to use two kinds of fluorescent brighteners in combination, and the object of the present invention cannot be achieved by using the brighteners of group (A) or brighteners of group (V) alone. The weight ratio of group (A) and fluorescent brightener (V) is group (A)/(V) = 1.
0/1~1/10. The best effect can be obtained preferably when the ratio is in the range of 5/1 to 1/1. The total amount of the fluorescent brightener in the composition is 0.01 to 1% by weight, preferably 0.05 to 1% by weight.
It is blended in an amount of 0.5% by weight.

In the present invention, alkyl or alkenyl ether sulfates,
Others such as alkyl or alkenyl sulfates, alkanesulfonates, saturated or unsaturated fatty acid salts, carboxy or sulfobetaine type surfactants, polyoxyalkylene alkyl or alkenyl ethers, polyoxyethylene alkylphenyl ethers, higher fatty acid alkanolamides Surfactants can be used in combination as long as they do not impede the effects of the present invention, but the total amount of surfactants is preferably 50% by weight or less, preferably 25 to 50% by weight. If it exceeds 50% by weight, manufacturing suitability and powder physical properties of the detergent deteriorate, which is not preferred.

The composition of the present invention further includes inorganic building blocks such as sodium carbonate, sodium sulfate, sodium tripolyphosphate, sodium pyrophosphate, sodium orthophosphate, sodium silicate, aluminosilicates represented by type A zeolite, ethane-1, Salts of phosphonic acids such as 1-diphosphonate, salts of phosphonocarboxylic acids such as 2-phosphonobutane-1,2-dicarboxylic acid, salts of amino acids such as aspartic acid and glutamic acid, nitrilotriacetate, ethylenediaminetetraacetate Polymer electrolytes such as aminopolyacetates such as polyacrylic acid and polyaconitic acid, salts of organic acids such as oxalic acid and citric acid, polyacetal carboxylic acid polymers or their salts described in JP-A-54-52196, etc. An organic divalent metal ion scavenger is blended. The total amount of these inorganic birgooses and organic divalent metal ion scavengers is 40 to 75%.
% by weight is added.

Furthermore, the composition of the present invention may contain the following components in appropriate amounts as required.

1) Re-staining prevention agents polyethylene glycol, polyvinyl alcohol, polyvinyl and lolidon, carboxymethyl cellulose, etc.

2) Bleach, enzymes, etc. As bleaching agents, sodium percarbonate, sodium perborate,
Sodium sulfate/sodium chloride hydrogen peroxide adduct, etc. can be used as an enzyme for protease, amylase, lipase,
In addition to cellulase, other flavoring agents, blue tinting agents, bleaching activators, etc. may also be added as necessary.

The method for producing the high-density granular concentrated detergent composition of the present invention is not particularly limited; It can be manufactured by adding acid-resistant detergent ingredients, neutralizing it, and then adding zeolite or tripolyphosphate to pulverize it, or by increasing the bulk density by granulating powdered detergent by spray drying. Can be done.

The particle size of high-density granular concentrated detergent fabric is usually 40-2000μ
, especially preferably in the range of 125 to 2000μ.

〔Effect of the invention〕

High-density granular concentrated detergent obtained by crushing and granulation tends to have a particularly poor powder color, but by applying the present invention, it is possible to obtain a detergent that is as white as conventional detergent powder.

〔Example〕

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

High-density granular detergent fabric (A) and particles (
B) was prepared and (B) was dry blended with (A) to obtain a dense granular detergent powder.

The b values of the detergent powders were measured using a Nihon Heavy Color Difference Meter Model 1001DP and compared.

The one with a positively larger b value is judged as yellow, and the b value is 1.
．． If there is a color difference of 0 or more, whiteness can be determined with the naked eye.

Note) ml LAS: 1lEIJt Sodium alkylbenzenesulfonate (c,□~C+1) *2 AO5: Sodium α-olefin sulfonate (cr
h"Cr a ) *3 Nonion: Polyoxyethylene alkyl ether (012~G+ 31■-=10) The nonion used in the particles (B) is also the same.

Compositions are shown in weight %.

The method for manufacturing the high-density granular concentrated detergent used in this example will be described below, but this is only a preferred example and is not particularly limited.

Detergent manufacturing method A slurry containing 50% by weight of water-containing bone was prepared using the composition shown in Table 1 (CP) and spray-dried to obtain a slurry with a bulk density of 0.3 g.
A detergent powder (P) of around /cm' was obtained.

Next, (P) is put into a high-speed mixer (stirring transfer granulator, manufactured by Fukae Kogyo Co., Ltd.), and a composition (Q) of finely powdered zeolite moistened with water is added to crush and granulate it. A high-density granular detergent with a density of 0.6 g/cm' to 0.8 g/cm3 was obtained. At this time, the water in the composition (Q) acts as a granulation binder for the crushed detergent powder (P), and the water in the composition (Q) acts as a granulation binder for the crushed detergent powder (P).
The fine zeolite powder in (1) acts as a carrier for water as a granulation binder and as a granulation aid to suppress the formation of coarse particles.

Further, as the granulation binder, the nonion in the composition (P) may be liquefied and sprayed onto the detergent powder during granulation. High-density granular detergent (P) +
(Q) is finally dry mixed with the fine powder zeolite (1?) to obtain a high-density granular detergent fabric (A) with excellent fluidity and anti-caking properties, and then dry mixed with particles (B). As a result, high-density granular detergents of each composition were obtained.

Particles (B) are prepared by mixing water-soluble and crystalline anhydrous sodium carbonate in a blender (P-Ktwinshell 1).
laboratory blender, 8QT, Lig
uid -5 solid model, PATTER5
ONKELLEY Co.,, tlsA), then added nonion from the liquid addition device of a V blender, mixed for 3 minutes, added a 60% by weight aqueous solution of polyethylene glycol (average molecular weight approximately 13,000) prepared in advance, and
By mixing for a minute, and finally adding finely powdered zeolite and mixing for 30 seconds, a product with excellent fluidity and anti-caking properties was obtained, which was used in this example.

Additionally, small amounts of thermally unstable additives, such as enzymes and bleaching agents, are preferably incorporated by dry mixing in this last step.

In this example, after crushing and granulation, the material was passed through a screen with an opening of 1 mm to remove coarse particles with a particle size of 1 mm or more.

According to this manufacturing method, the crushing and granulation conditions (type of granulator, granulation temperature, granulation time, type of granulation binder, etc.), the opening of the screen to be passed through after granulation, the recycling of coarse particles, etc. A granular detergent having a desired bulk density and particle size can be obtained by selecting the amount, bulk density and particle size of the water-soluble and crystalline salt particles (B) to be dry mixed.

Claims (1)

[Claims] 1. In a high-density granular concentrated detergent having a bulk density of 0.5 g/cm^3 or more, (a) an alkylbenzene sulfonate and (b) an olefin sulfonate are combined in (a)/(b). A group consisting of a fluorescent brightener having a weight ratio of 1/3 to 8/1 and containing a total amount of 25 to 50% by weight, and further comprising (c) a fluorescent brightener represented by the following formulas (I) to (IV). One or more selected from the following and a fluorescent brightener represented by formula (V) in a total amount of 0.0
A high-density granular concentrated detergent composition, characterized in that it contains 1 to 1% by weight. ▲There are mathematical formulas, chemical formulas, tables, etc.▼(I) [However, R_1 ▲There are mathematical formulas, chemical formulas, tables, etc.▼
Or ▲There are mathematical formulas, chemical formulas, tables, etc.▼, R_2 is -NHCH_2CH_2OH, ▲There are mathematical formulas, chemical formulas, tables, etc.▼, -N(CH_2CH_2OH)_
2, -NH_2, ▲There are mathematical formulas, chemical formulas, tables, etc.▼ or -OCH_3, -NHCH_3. ] ▲ There are mathematical formulas, chemical formulas, tables, etc. ▼ (II) ▲ There are mathematical formulas, chemical formulas, tables, etc. ▼ (III) ▲ There are mathematical formulas, chemical formulas, tables, etc. ▼ (IV) ▲ There are mathematical formulas, chemical formulas, tables, etc. ▼ (V)