KR101020303B1 - Detergent compositions with fabric softening effect - Google Patents

Abstract

The present invention relates to a detergent composition for imparting a softening effect without affecting the washing power of the fiber during washing, the fiber flexible detergent composition of the present invention (a) 5 to 50% by weight of nonionic to anionic surfactant as a detergent component [At least 5% by weight of the component (a) is a nonionic surfactant], (b) 1 to 20% by weight of the cationic surfactant, and (c) a coating material of the cationic surfactant, dissolved according to the pH of the wash water. It is characterized by containing 0.05 to 10% by weight of organic polymers having different properties.

The fabric-flexible detergent composition of the present invention configured as described above minimizes the interaction between the cationic flexible component and the anionic surfactant in the detergent by mixing a certain component with different solubility in the present washing and rinsing step, and mixes the detergent and the softening agent. It does not affect the washing power of the fiber at the time of washing, but provides a high cleaning effect and provides a good softening effect on the fiber, while solving the conventional problem of reducing the washing power by simultaneous administration of detergent and softening agent, It is a useful invention to provide.

Softening effect, cationic surfactant, polymer, pH

Description

Detergent compositions with fabric softening effect

The present invention relates to a detergent composition having a fiber softening effect, and more particularly, to a detergent composition for imparting a softening effect without affecting the washing power of the fiber during washing.

In general, as a softening method of the fiber, it is common to use a method of injecting a fabric softener at the last rinsing during the washing process of clothing, but such a general method has a disadvantage in that an additional softening agent is added to the last rinse. . On the other hand, in order to avoid such inconvenience, a method of adding a softener and a detergent at the same time has been proposed, in this case, the washing power is greatly reduced by the interaction of a flexible component such as a cationic surfactant or a cationic polymer and an anionic surfactant in the detergent In addition, the fiber softening effect also caused a problem that is significantly reduced, which is undesirable. Therefore, in order to offset the loss caused by such interactions and obtain a desirable softening effect, a large amount of expensive cationic flexible components have to be used, which not only raises manufacturing costs but also causes problems of environmental pollution. I couldn't.

Accordingly, researches on softener-containing detergents that provide convenience and ease of use while solving the conventional problems and bringing satisfactory cleaning power and softening effect have been continuously conducted.

For example, in the related prior art, US Pat. No. 3,862,058 (Colgate Palmolive Company) uses mono to solve the problem of reduced cleaning power due to cation-anion interaction and unstable contact of alkali long-chain alkyl quaternary ammonium salts. The use of long-chain alkyl quaternary ammonium is described, and Japanese Patent Publication No. 56-21795 (Proctor and Gamble Company) discloses a smectite-type clay softening agent characterized by having a cation exchange capacity of 50 meq / 100 g. The content of 50% is described. In addition, US Pat. Nos. 3,936,537 and 4,141,841 (above Proctor and Gamble Company) have a solubility of up to 50 ppm at 25 ° C. to reduce interactions with anionic detergent components when using cationic flexible components, especially quaternary ammonium salts. , A combination of solid organic dispersion inhibitors such as paraffin wax and fatty alcohols having a melting point of 37 to 93 ° C. and organic flocculants, and US Pat. No. 4,339,335 (Colgate Palmolive Company) discloses a solid cationic surfactant and soda ash. And a method of inhibiting the interaction between a cationic surfactant and an anionic detergent component by mixing some nonionic surfactants and nucleating them, and then coating the surface of the nuclear particles with a nonionic and inorganic builder zeolite. . In the domestic patent, in particular 1997-0008994 (LG Chem) describes a method for minimizing the interaction with the cationic surfactant by using 10 to 40% by weight of the non-ionic surfactant as a main component.

Let's summarize some of the techniques described in the above patents;

First, by using clay alone as a flexible component, or by using a clay having an ion exchange power to form a conjugate between the clay and the cationic surfactant to suppress the interaction between the anionic surfactant and the cationic surfactant, cleaning power and softening effect Is to minimize the reduction. However, this method has a limitation in fundamentally preventing the interaction between the anionic surfactant and the cationic surfactant in the laundering process, and in fact, does not have a sufficient softening effect;

Secondly, there is a method of containing a cationic surfactant with a nonionic surfactant as a main component, but this method can bring about an improvement in washing power and flexibility compared to the case where the anionic surfactant is a main component, but it has sufficient effect. Not only is it difficult to expect, but may also cause problems in terms of the flowability and stability of the detergent, which is undesirable.

Finally, a method of coating a cationic surfactant with wax, fatty alcohol, etc. to suppress the dispersion of the cationic surfactant to inhibit the interaction with the anionic detergent component, and nuclei containing the cationic surfactant may There is a method of coating with inorganic builders to suppress the dispersion, but the former is a simple coating by wax, fatty alcohol, etc. If the coating thickness is too thick, there may be a problem in solubility. In the latter case, it is also difficult to expect sufficient cleaning power and softening effect because it is easily dissolved and dispersed during washing by a simple coating by a nonionic surfactant and an inorganic builder.

Therefore, the inventors of the present invention, in order to solve the above-mentioned disadvantages of the prior art, the washing process is first subdivided the washing process to substantially wash the clothes, and the flexible component is finally attached to the fiber to give a softening effect The change in the condition of the rinsing step was observed. The biggest feature found here was a decrease in pH, the pH of the wash water in the main washing process was 9 to 11, the pH of the rinsing water in the final rinsing step is 6 to 8. Accordingly, the present inventors have completed the present invention by developing an effective dispersion suppression technology of a flexible component in view of such a change in conditions.

 An object of the present invention is to provide a detergent composition that provides a good softening effect without affecting the washing power of the fiber even when mixed with a detergent and a softening agent.

This object of the present invention is achieved by providing a composition capable of minimizing the interaction between the cationic flexible component and the anionic surfactant in the detergent, thereby exhibiting a high cleaning effect and imparting a good softening effect to the fibers.

Fiber flexible detergent composition of the present invention for achieving the above object;

(a) 5 to 50% by weight of nonionic to anionic surfactant, (b) 1 to 20% by weight of cationic surfactant, and (c) dissolution characteristics according to pH of wash water as coating material of the cationic surfactant. It is characterized by containing 0.05 to 10% by weight of the organic polymer.

As said nonionic surfactant which can be used by this invention, the ethylene oxide 1-20 mol addition product or the ethylene oxide / propylene oxide addition product of a C8-C20 higher alcohol is mentioned. In particular, an adduct of 1 to 15 moles (preferably 2 to 10 moles) of ethylene oxide of an alcohol having 10 to 16 carbon atoms is more preferable in the removal of sebum contamination.

Examples of the anionic surfactant that can be used in the present invention include sulfuric acid ester salts of higher alcohols, alkylbenzene sulfonates, alphaolefin sulfonates, alpha sulfo fatty acid salts or alkyl ester salts thereof, and fatty acid salts. Particularly, straight chain alkylbenzene sulfonate having 10 to 18 carbon atoms, more preferably 12 to 14 carbon atoms, is preferable in view of washing performance.

As in the composition of the present invention, as the component (a) of the present invention, the nonionic surfactant is preferably 5 to 50% by weight, more preferably 10 to 40% by weight. If the content of the surfactant component is less than 5% by weight may be poor in terms of washing performance, and also in terms of fluidity and long term storage resistance of the detergent composition, it is preferable to use less than 50% by weight.

When using a nonionic surfactant and an anionic surfactant together in this invention, 95: 5-0: 100 are preferable in weight% ratio, and, as for the ratio of anionic surfactant / nonionic surfactant, 50: 50-0 is more preferable. It is preferable to use in ratio of 100.

The amount of detergent surfactant of the detergent composition of the present invention is preferably 8 to 50% by weight, more preferably 10 to 40% by weight.

Cationic surfactants usable in the present invention include quaternary ammonium salts added with alkyl groups of the general formula (I), quaternary ammonium salts added with alkyl esters of the general formula (II) and imides of general formula (III). Sleepy cationic surfactants are suitable.

(Ⅰ)

(Ⅰ)

(Ⅱ)

(Ⅱ)

(Ⅲ)

(Ⅲ)

Wherein R 1 and R 2 each independently represent an alkyl or alkenyl group having 10 to 28 carbon atoms, and X represents a Cl or CH ₃ OSO ₃ group.

Of these, cationic surfactants of the general formula (I) are most preferred because they have properties that are easy to be powdered.                     

The cationic surfactant as a component of the present invention is preferably 1 to 20% by weight. More preferably, it is 2 to 10% by weight, and less than 1% by weight, the softening effect and the antistatic effect are weak, and when it is 20% by weight or more, since the cationic surfactant is expensive, the production cost is increased, which is not preferable. .

As (c) component which is the substance which has the most important function in this invention, the copolymer which has the following general formula (IV) and general formula (V) as a repeating unit is preferable.

(Ⅳ)

(Ⅴ)

(Ⅳ)

(Ⅴ)

In the above formula, R1, R3 is a hydrogen atom or an alkyl group having 1 to 5 carbon atoms, preferably a methyl group. R2 is an alkyl group having 1 to 5 R4 is a tertiary amine or the formula -R5N ⁺ R6R7R8 X represented by the general formula -R5NR6R7 ^- a quaternary ammonium group represented by are preferred. Wherein R 5, R 6, R 7, and R 8 each independently represent an alkyl group having 1 to 3 carbon atoms, and X ⁻ is an anionic radical compatible with quaternary ammonium ions. The organic polymer has an average molecular weight of 10 to 1 million. Preferably, 50,000 to 300,000 organic polymers are used.

The polymer of the present invention does not dissolve and dissolve in the main washing conditions (washing water pH of 9 to 11) due to poor dissolution / solubility, so as to minimize the interaction between the cationic surfactant and anionic surfactant In the rinsing step, which is a relatively low pH (6 to 8) condition, the dissolution / dispersibility is improved so that it is completely dissolved to release the cationic surfactant to effectively attach to the fiber.

Therefore, when the cationic surfactant is coated in advance with the polymer as described above and added into the detergent, the above effects can be maximized.

As a representative example, copolymer of acrylic acid and methacrylic acid ester having a quaternary ammonium group, commercially available from Degussa under the trade names EUDRAGIT RL, EUDRAGIT RS, EUDRAGIT E, EUDRAGIT NE, etc. Copolymers and the like can be used.

The detergent composition of the present invention preferably contains 0.05 to 10% by weight of the organic polymer, more preferably 0.1 to 5% by weight. The organic polymer is preferably used in a form coated on a cationic surfactant powder, and the dispersion of the polymer in a powder obtained by absorbing a particulate cationic surfactant powder or a liquid cationic surfactant to a particulate builder such as sodium carbonate, zeolite, or silicate. After mixing while spraying, it is possible to obtain a cationic surfactant granular powder coated with an organic polymer through a process of drying at 40 ℃ or more.

The detergent composition of the present invention is prepared by adding builders, fragrances, fluorescent brighteners (steelbene, biphenyl, etc.), enzymes (protease, amylase, lipase, cellulase), and the like, which are commonly used in detergent compositions. As the builder used in the present invention, sodium carbonate and zeolite can be used. Sodium carbonate contributes to an increase in the alkalinity of the aqueous detergent solution, thereby increasing the washing power, and also absorbs a liquid nonionic surfactant. The amount of use is preferably 10 to 50% by weight. On the other hand, the zeolite exchanges calcium ions in the wash water to increase the washing power, and at the same time absorbs the liquid non-ionic surfactant to maintain the stability and flowability of the detergent. The amount of use is preferably 10 to 50% by weight.

Detergent composition of the present invention may include other additives that can be used conventionally, such additives include fragrance, fluorescent brighteners (stilbene-based, biphenyl-based), enzymes (protease, amylase, lipase, cellulase) and the like have.

As described above, the present invention has a characteristic that when washing, dispersion / dissolution is suppressed at pH 9 to 11 of washing water which is main washing conditions, and at a relatively low pH 6 to 8 condition of the rinsing step. By containing a certain amount of organic polymer, it is possible to minimize the interaction between the cationic flexible component and the anionic surfactant in the detergent, and even if the detergent and the softener are mixed, it shows a high washing effect without affecting the washing power of the fiber during washing. At the same time, it has the effect of providing a good softening effect to the fibers.

Hereinafter, the present invention will be described in more detail with examples and comparative examples, but the present invention is not limited thereto.

Example 1-6, Comparative Example 1-5

Next, the detergent composition having the components and contents of Table 1 was prepared according to a conventional method using a high speed rotary mixer and a spray dryer.                     

                                                 (Unit: weight%) Raw material Example Comparative example One 2 3 4 5 6 One 2 3 4 5 (a) Nonionic Surfactant 1 ^{Note 1)} 20 20 20 15 20 20 20 20 15 15 20 Anionic Surfactant 1 ^{Note 2)} 7 7 7 Anionic Surfactant 2 ^{Note 3)} 3 3 (b) Cationic Surfactant1 ^{Note 4)} 5 5 5 5 5 5 5 5 Cationic Surfactant2 ^{Note 5)} 5 (c) Copolymer 1 ^{Note 6)} One One One One Copolymer 2 ^{Note 7)} One Copolymer 3 ^{Note 8)} One (d) Sodium carbonate 35 35 35 35 35 35 35 35 35 35 35 Zeolite 25 25 25 25 25 25 25 25 25 25 25 Polymer 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 sulphate of soda 7 7 7 5 7 4 13 8 11 6 5 Fluorescent dyes 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 enzyme 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 incense 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 moisture 5.5 5.5 5.5 5.5 5.5 5.5 5.5 5.5 5.5 5.5 5.5 Sum 100 100 100 100 100 100 100 100 100 100 100 Cleaning power (%) 96 95 95 90 95 90 100 93 98 84 85 Flexibility (out of 5) 3.1 2.9 2.7 2.0 2.3 2.1 1.0 2.0 1.0 1.3 1.1

Note 1) 12 to 14 carbon atoms in the alkyl group, 9 mol of ethylene oxide average added moles

Note 2) linear alkylbenzenesulfonic acid

Note 3) Alpha-olefin sulfonate having 14 to 18 carbon atoms in the alkyl group

Note 4) Distearyldimethylammonium chloride (AROSURF TA-101, Goldschmidt)

Note 5) dallow carboxyethylhydroxyethylmethylammoniummethosulfate (REWOQUAT WE18, Goldschmidt)

Note 6) Copolymer having a molar ratio of 1: 2: 0.1 of ethyl acrylate, methyl methacrylate and trimethylammonioethyl methacrylate chlorite, weight average molecular weight 150,000 (EUDRAGIT RS30D, Degussa)

Note 7) Copolymer having a molar ratio of 1: 2: 0.2 of ethyl acrylate, methyl methacrylate and trimethylammonioethyl methacrylate chlorite, weight average molecular weight 150,000 (EUDRAGIT RL30D, Degussa)

8) Copolymer having a molar ratio of 1: 2: 1 of butyl methacrylate, 2-dimethylammonioethyl methacrylate and methyl methacrylate, weight average molecular weight 150,000 (EUDRAGIT E12.5, Degussa)

Experimental Example 1

Cleaning power test

Examples 1 to 6, Comparative Examples 1 to 5 of the prepared powder detergent was measured by the following conditions and methods.

Cleaning equipment: cleaning force tester (Terg-O-Tometer)

Cleaning temperature: 25 ℃

Wash water hardness: 60ppm Ca ²⁺ , 30ppm Mg ²⁺

Bath ratio: 5g contaminated cloth / 1L washing water

Contaminated cloth: Artificial wet filthy cloth (contamination composition: 28.3% of oleic acid, 15.6% of triolein, floating paraffin 2.5%, cholesterol rate 12.2%, cholesterol 1.6%, squalene 2.5%, gelatin 7.0%, clay 29.8%, carbon black 0.5%; Japan)

Detergent concentration: 0.8333g / L

Treatment: The reflectance of the contaminated cloth before and after washing was measured using a colorimeter (Minolta).

Cleaning power (%) = (reflectance after washing-pre-wash) / (white cloth reflectance-pre-wash)

Results: As shown in Table 1, the composition of each example of the detergent composition according to the present invention did not show a significant difference in cleaning power from that of the comparative example, and it can be seen that it maintains excellent washing power.

Experimental Example 2.

Flexibility test

In Examples 1 to 6 and Comparative Examples 1 to 5 prepared powder detergent was measured by the following conditions and methods.

Washing machine: Automatic washing machine (Pulsator type)

Cleaning temperature: 25 ℃

Wash water hardness: 30ppm Ca ²⁺ , 10ppm Mg ²⁺

Bathtub: 200g towels, 5 sheets / 30L wash water

Test cloth: Towel (200g, 100% cotton)

Detergent concentration: 0.8333g / L                     

Evaluation of Softness: The treated towels were touched by 20 panelists and given a softness to the touch.They were treated with a softener-free detergent as one point, and the standard amount was used at the final rinsing step. The thing which processed the softening agent of was made into 5 points.

Results: As shown in Table 1, it can be seen that the composition of each example, which is a detergent composition according to the present invention, showed superior flexibility in comparison with that of the comparative example.

The fabric-flexible detergent composition of the present invention configured as described above minimizes the interaction between the cationic flexible component and the anionic surfactant in the detergent by containing a certain component of the composition having different dispersion / dissolvability in the present washing and rinsing step, and thus the detergent and the softening agent. Even if the mixture is added, it shows high washing effect without affecting the washing power of the fiber at the same time and provides a good softening effect on the fiber. It is a useful invention that provides sex.

Claims (3)

(a) 5 to 50% by weight of nonionic to anionic surfactant, (b) 1 to 20% by weight of cationic surfactant, and (c) dissolution characteristics according to pH of wash water as coating material of the cationic surfactant. A fabric softening detergent composition characterized by containing 0.05 to 10% by weight of different organic polymers. The fabric softening detergent composition according to claim 1, wherein the organic polymer is coated with the cationic surfactant or the oil absorption powder thereof with a copolymer having the following general formulas (IV) and (V) as repeating units.

(Ⅳ)

(Ⅴ) Wherein R, R1, R3 is a hydrogen atom or an alkyl group having 1 to 5, R2 is an alkyl group having 1 to 5 R4 is a tertiary amine or the formula -R5N ⁺ R6R7R8 X represented by the general formula -R5NR6R7 ^- represented by Is a quaternary ammonium group, wherein R 5, R 6, R 7, and R 8 each independently represent an alkyl group having 1 to 3 carbon atoms, and X ⁻ is an anionic radical compatible with the quaternary ammonium ion. The fibrous soft detergent composition according to claim 2, wherein the oil absorbent powder is at least one selected from sodium carbonate, zeolite, and silicate as an inorganic builder capable of absorbing and supporting a liquid cationic surfactant.