KR960002197B1 - High density powder detergent composition - Google Patents

Abstract

The high density powdery detergent, of which the apparent density is over 0.6g/cm3, is prepared by (A) grinding bead-like detergent having an apparent density of 0.2-0.4g/cm3, which is produced by spraying detergent slurry downward from the top of the counter current spray dryer ; (B) coagulating detergent powder by spraying 2-10 wt% nonionic additive as a binder ; and (C) coating the coagulated detergent with 1-30wt% plasticizing aid. The nonionic coagulant is polyethylene glycol or alkylethoxylate. The plasticizing aid is at least one selected from powdered zeolite, talc, clay or silica.

Description

Manufacturing method of high density powder detergent

The present invention relates to a method for producing a high density powder detergent. More specifically, the present invention is more apparent than conventional detergents prepared by spray drying by densifying powders on beads prepared by Counter-Current spray drying apparatus using nonions and additives. It relates to a method for producing a laundry powder detergent having a high density and excellent fluidity.

In general, a variety of methods for manufacturing a laundry powder detergent are known, but a method using a countercurrent spray drying tower that is easy to mass produce and has good uniformity of particles is widely used. However, since the detergent produced by this method has an apparent density of about 0.3 to 0.45 g / cm 3 and is lighter than its volume, the manufactured product requires an excessive amount of space for storage, is expensive to transport, and is limited in distribution. There were problems such as not being able to display the products on the shelves sufficiently. In order to solve this problem, studies on the densification of powdered detergents have been continuously conducted.

As a method for densifying the apparent density, which is a disadvantage of the powder detergent produced by the countercurrent spray drying apparatus, the dry particles prepared by the countercurrent spray drying apparatus may be first manufactured using a vertical type high speed mixer or a lodige mixer. ), A method of making a high-density detergent having good fluidity by spraying a liquid material after pulverization, forming a contact point on the pulverized dry particles, and then applying a water-insoluble inorganic material having porosity such as zeolite.

However, in order to increase the density of the first-prepared detergent particles, a suitable liquid binder capable of forming agglomerates between the detergent particles pulverized on a high-speed rotary granulator is sprayed to form agglomerates between the pulverized products, and then a water insoluble flow aid is applied to the fluidity. This excellent high-density detergent should be prepared, but when the binding force of the liquid binder is low, aggregates are not properly formed between the pulverized detergent particles, which makes it difficult to prepare a detergent having an apparent density of 0.6 g / cm 3 or more, which is a standard of general high-density detergent.

As a prior art for densifying the powder detergent produced by the countercurrent spray drying apparatus, Japanese Patent Laid-Open No. 78-43710, Japanese Patent Laid-Open No. 86-69897, Japanese Patent Laid-Open No. 89-20297, etc. Known.

First, Japanese Patent Application Laid-Open No. 78-43710 uses a nonionic binder as a liquid binder in the process of pulverizing and assembling the first dried powder detergent. The nonionic surfactant is 0.6 g / cm 3 in a conventional method. As a result, there is a problem in densification, and in this method, not only the fluidity is undesirable, but also there is a problem in that productivity is greatly reduced due to excessive growth of particles.

In addition, Japanese Patent Application Laid-Open No. 86-69897 and Japanese Patent Application Laid-Open No. 89-20297 propose a method of densifying detergents using water as a method of densifying detergents, but this method also has a problem in that fluidity is not preferable. have.

Generally, in order to densify powder detergents containing 10 to 60% by weight of surfactants, a process of pulverizing these detergents is required first, and the first crushed detergent has an apparent density compared to the powder detergents produced by the countercurrent spray drying apparatus. Is slightly elevated, but in this state (crushed state), dust generation is severe and liquidity is bad, so it is not worth it as a product. In order to commercialize, in order to make a contact between the crushed detergent particles and to coat the outside with a porous flow aid to make a high-density and excellent fluidity detergent, in the process of selecting the liquid binder is not crushed Since no contact is formed between the detergent particles, it becomes difficult to increase the density or cause poor fluidity.

Therefore, the present inventors have diligently studied to solve the above-mentioned conventional problems. As a result, by dissolving a small amount of additive in the liquid binder suitable for bonding the pulverized detergent particles and adding them to the pulverized detergent particles, the apparent density is 0.6. The present invention has been completed by finding out that it is possible to produce a high density powder detergent having a g / cm 3 or more and greatly improved flowability and productivity.

The present invention pulverizes a powdery detergent (appearance density 0.2 to 0.4 g / cm 3) made by spraying the detergent slurry downward from the top of the countercurrent spray drying tower, and adding 1 to 10 wt% of the binder coagulant as a binder. It provides a method for producing a high-density powder detergent, characterized in that a non-ion by spraying 2 to 10% by weight of agglomeration, and then using 1 to 30% by weight of a flow aid.

Hereinafter, the manufacturing method of the present invention will be described in more detail.

First, 10 to 60% by weight of one or more surfactants and 20 to 90% by weight of one or more inorganic and organic builders are sprayed downward from the top of the countercurrent spray drying tower and hot air (200 to 400) from the bottom to the top. ℃) is injected to make beads dry in the form of detergent. Thereafter, 60 to 95% of the dried powder was placed in a high speed mixer (Vertical High Speed Mixer, Japan, or Lodidge Mixer, Lodige, Germany), and then 1 to 5% by weight of non-ion added with an additive to the dry powder after grinding. A spray is formed on the pulverized detergent dry powder to form a contact to form an aggregate. Subsequently, 1-30% by weight of the flow aid is applied to prepare a powder detergent having a high density (apparent density of 0.6 / cm 3 or more) and excellent fluidity.

Bonding coagulants used in the present invention polyethylene glycol HO (CH ₂ CH ₂ O) _n CH ₂ CH ₂ OH molecular weight = 1000 to 25,000, melting point 35 ℃ to 70 ℃] and / or alkyl ethoxylate RO (CH ₂ CH ₂ O) _n H (R = C ₁₆ to C ₁₈ , n = 25 or more: molecular weight 2,000 to 25,000) is preferred.

In the present invention, it is preferable to use 1 to 5% by weight of polyethylene glycol as the nonionic additive. When the polyethylene glycol added to the non-ion is less than 1% by weight, the productivity is significantly lowered. When the amount of the polyethylene glycol is 5% by weight or more, the grown particles become hard, which may cause deterioration of quality. Polyethylene glycol is used to prevent the growth of the position after forming the contact point by using a solidification point 53 ℃ to 70 ℃, so that the product with good fluidity and productivity, non-ion also serves as a cleaning agent.

It is preferable to use 2 to 2% by weight of nonionics to which an additive (polyethylene glycol) is added. When the content of the non-ion added with the additive is less than 2% by weight, it is difficult to form a dry powder because it cannot form a contact point in the decomposed detergent powder. In addition, the use of more than 10% by weight may cause a lot of lumps in the final product and significantly reduce the fluidity. If less than 1% by weight of polyethylene glycol added to the non-ion productivity is significantly reduced, when the weight is more than 5% by weight the grown particles become hard, which can lead to a reduction of the foam.

The nonion used in the present invention

R-O (CH ₂ CH ₂ ) _n H (R: C ₁₂ -C ₁₈ , n: 4-9)

Was used.

The flow aid used in the present invention is one or more selected from powder zeolite, talc, clay and silica, and preferably contains 50 wt% or more of particles having a particle diameter of 10 μm or less.

As a surfactant as a component of the detergent raw material used in the present invention, a linear alkylbenzene sulfonate Fatty acid salt (R-CH ₂ -COONa: C ₁₄ -C ₁₆ ), Alkanesulfonate (R ₁ = CH-SO ₃ Na: R ₁ + R ₂ = C ₁₁ -C ₁₈ ), Alphaolefin sulfonate (CH _3- A mixture of (CH ₂ ) n-SO ₃ Na and R-CH ₂ -CH- (CH ₂ ) m-SO ₃ Na m + n = 9-15, R = C ₁₂ -C ₁₈ ), alpha sulfo fatty acid methyl ester

Oxo alcohol polyethylene glycol ether

Fatty Acid Alkanol Amides

Nonionic surfactant or alkyl betaine, such as

Alkylsulfobetaine

Amphoteric surfactants, such as these, can be used.

In addition, in order to enhance the cleaning power of the surfactant, carbonate-based (Na ₂ CO ₃ , NaHCO ₃ , Na ₂ CO ₃ , NaHCO ₃ , 2H ₂ O) silicate (Layered Crystatlline -Na ₂ SiO or β-Na ₂ SiO), phosphate type (orthophosphoric acid, pyrophosphoric acid, tripolypolic acid, tetrapolypolic acid or salts thereof), phosphonate type (diethylenetriaminepentamethylene phosphate, Aminotrimethylene phosphate, 1-hydroxyethylene-1,1-diphosphate), nitrilotriacetic acid or its salt, ethylenediaminetetraacetic acid or its salt, carboxymethylcellulose, polyethylene glycol, polyvinyl alcohol, polyvinyl poly Don, polyacrylic acid or its salt, the copolymer of maleic acid and a vinyl ether or its salt, sulfate, zeolite, etc. can be used.

In addition, as an additive, a fluorescent whitening agent (stilbene-based, biphenyl-based, pyrazoline-based, fumarine-based, quinolone-based), enzyme (protease, amylase, lipase, cellulase), bubble control agent (zibaran-based, silicone-based, paraffin wax) And the like) can be used.

Hereinafter, the present invention will be described in detail with reference to Examples.

Example 1

: Densification and physical property change by liquid phase bonding

Next, a detergent slurry containing a detergent composition having a composition and content as shown in Table 1 (solid content: 57% by weight) was sprayed downward from the top of the countercurrent spray drying tower to prepare a powdery powder detergent. Thereafter, powder detergent was added to a high speed rotary granulator (Lodige, Germany), followed by grinding for 5 minutes, a liquid binder and a flow aid were added, and a high density detergent was prepared for 10 minutes.

TABLE 1

* Fluorescent dyes (Biphenyl series: Tinopal CBS-X of Ciba-Geigi)

The yield of the high-density powder detergent according to the type and content of the liquid binder is shown in Table 2 below.

TABLE 2

* 1: Bead detergent prepared by spraying the detergent composition shown in Table 1 from the top of the countercurrent spray drying tower.

* 2: liquid binder

1) Sophtinol 90 (Japan Catalytic Chemical Industry)

2) Nonionic (LA-7: Korean Polyol)

* 3: flow aid

* 4: Additive added to non ions

PEG (Korean Polyol)

3) Time taken for 100 ㏄ of powder to pass through a funnel having a diameter of 10 cm.

From Table 2, it can be seen that the density of the finished product was smooth and the fluidity was excellent when the liquid zeolite was used than when the densified product according to the type of the liquid binder or the acrylic polymer was used.

[Examples 5 to 9]

Densification and physical property change according to the amount of non-ion using the additive is sprayed downward from the top of the countercurrent spray drying tower as shown in Table 1 to prepare a powder detergent of beads, and then the powder detergent is a high-speed rotary granulator ( Lodige mixer (Lodige, Germany) was put into a high-density detergent for 10 minutes in total manufacturing time with a liquid binder and a flow aid after grinding for 5 minutes. The physical properties of the high-density detergent according to the content of nonionic and powder zeolite using additives are shown in Table 3 below.

TABLE 3

From Table 3, when the amount of polyethylene glycol as a coagulant was maintained at 1 to 5% by weight (Examples 5 to 9), the apparent density, fluidity, productivity, and the like of the finished product high-density detergent were found to be preferably 0.5. When less than% by weight it was difficult to increase the density as shown in Comparative Example 3 because it did not form a sufficient contact between the dry powder detergent, when the content exceeds 5% by weight it can be seen that the productivity of the binder coagulant is too high.

Claims (7)

Nonionic 2 to 10 weights of a powder-based powder detergent (0.2-0.4 g / cm3 apparent density) made by spraying the detergent slurry downward from the top of the countercurrent spray drying tower and adding a coagulant as a binder. A method for producing a high-density powder detergent, characterized in that the spray aid is agglomerated to use 1 to 30% by weight of a flow aid. The high density powder detergent manufacturing method according to claim 1, wherein an apparent density of the prepared powder detergent is 0.6 g / cm 3 or more. The method of claim 1, wherein the nonionic RO (CH ₂ CH ₂ ) _n H (R: C ₁₂ -C ₁₈ , n = 4-9). The coagulant according to claim 1 or 2, wherein the coagulant is polyethylene glycol HO (CH ₂ CH ₂ O) _n CH ₂ CH ₂ OH, molecular weight = 1000 to 25,000, melting point 35 ℃ to 70 ℃] and / or alkyl ethoxylate RO (CH ₂ CH ₂ O) _n H (R = C ₁₆ to C ₁₈ , n = 25 or more; molecular weight 2,000 to 25,000) A method for producing a high density powder detergent, characterized in that. The method of claim 4, wherein the amount of the coagulant added is 1 to 5% by weight. The method of claim 4, wherein the binding coagulant is polyethylene glycol. The method of claim 1, wherein the flow aid is at least one selected from powder zeolite, talc, cray, and silica, and has a particle diameter of 10 µm or less and 50 wt% or more.