JPS5946560B2 - Detergent composition that gives flexibility to clothing - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a detergent composition that not only cleans clothes but also gives them a good texture and softness. This invention relates to a detergent composition that gives a soft finish.

When washing clothes, such as cotton underwear or diapers, using conventional heavy detergents for clothes, the finish feels stiff and fluffy, and when washing synthetic fiber cloth, it does not feel soft or smooth. The slip property is insufficient.

For this reason, in order to give washed clothes a good texture and flexibility, it is common practice to use a fabric softener containing a cationic surfactant such as di-long-chain alkyldimethylammonium as a main ingredient after rinsing. It is. Heavy laundry detergents usually have anionic surfactants as their main ingredient, so if your fabric softener has a cationic surfactant as its main ingredient,
It is not recommended to use fabric softener directly during washing. This is because not only does it react with the cationic surfactant in the softener to produce water-insoluble substances, but also the softening effect, detergency or foaming power is significantly impaired. On the other hand, there are also detergent compositions in which an anionic surfactant, a nonionic surfactant, an amphoteric surfactant, or an oily component that does not react with the anionic surfactant is added to the detergent component to impart a good texture during washing. Some suggestions have been made.

For example, the addition of certain soap compounds (US Pat. No. 36,259)
No. 05, U.S. Pat.
U.S. Patent No. 3,627,822, U.S. Patent No. 4,07145
Methods such as No. 6) are known, but these substances are undesirable because they do not have sufficient effect unless they are added in a fairly large amount, and they also impair foaming properties during washing. . Although a decrease in foaming does not necessarily mean a decrease in cleaning power, general consumers tend to use the quality of foaming as a criterion for determining the performance of detergents. This is a big problem in terms of value. The present inventors conducted intensive research in order to obtain a detergent composition that imparts a softening effect to clothing at the same time as washing and does not reduce foaming during washing. It was discovered that by using a high molecular weight α-olefin sulfonate and a sparingly water-soluble di-long chain alkyl quaternary ammonium salt, the objective could be achieved with a relatively small amount of addition, and based on this knowledge, the present invention was developed. It was completed.
That is, the present invention provides (a) 2 to 10% by weight of an α-olefin sulfonate having a carbon number of 20 to 24 and a proportion of 22 carbons of at least 35% by weight, (b) a general formula (wherein R1 and R2 is an alkyl group or alkenyl group having an average carbon number of 10 to 22, R3 and R4 are 1 to 3
0.3 to 3% by weight of a cationic activator represented by an alkyl group having a carbon number of
) A detergent composition characterized by containing 1 to 30% by weight of an anionic activator and/or a nonionic activator having detergent activity, thereby achieving the intended purpose.

The α-olefin sulfonate used in the present invention is a thin film of a mixed α-olefin with a carbon number ranging from 20 to 24 obtained by the wax cracking method, the ethylene polymerization method using a Ziegler catalyst, or an improved method thereof. It can be obtained by sulfonating with gaseous anhydrous sulfuric acid diluted with an inert gas, neutralizing with sodium hydroxide or potassium hydroxide, and then hydrolyzing.

The α-olefin sulfonate thus obtained contains monosulfonate and disulfonate, and the former further includes alkene sulfonate and hydroxyalkane sulfonate.

The ratio of alkenesulfonate to hydroxyalkanesulfonate is 40:60 to 90:10, preferably 5
The time is from 0:50 to 80:20. In the present invention,
By adjusting the above α-olefin sulfonate so that those having a carbon chain length of 22 account for 35% or more of the total, an excellent clothing softening effect is exhibited. The blending amount is 2 to 10% by weight, preferably 3 to 5% by weight of the total amount.
If it is less than 2%, the softening effect will not be sufficient, and if it exceeds 10%, foaming will be reduced.

This product itself has almost no foaming. Next, dialkyl type, monoalkyltrimethyl type, and monoalkylbenzyldimethyl type are known as quaternary ammonium salts, but dialkyl type is preferred in the present invention.

Other types do not have sufficient flexibility. Specific examples include distearyldimethylammonium salt, dicured tallow alkyldimethylammonium salt, dicured tallow alkylbenzylmethylammonium salt, distearylmethylbenzylammonium salt, distearylmethylhydroxyethylammonium salt, and distearylmethylhydroxypropylammonium salt. , distearyl dihydroxyethylammonium salt, etc., with the counter ion being chloride or bromide. The blending amount is 0.3 to 3% by weight of the total amount.
The amount is preferably from 0.5 to 1.5% by weight; if it is less than 0.3%, the softening effect will not be sufficient, and if it exceeds 3%, foaming will decrease and detergency will also tend to deteriorate. The quaternary ammonium salt used is preferably in the form of granules with an average particle size of 50 μm to 250 μm. The granules may be made of only quaternary ammonium salts, but in this case, detergent builders such as sodium tripolyphosphate may be used as powdered detergents, as they may soften and melt due to temperature during storage, causing the powdery detergents to solidify. It is best to use a powder that has been spray-dried, or one that has been melt-mixed, cooled and solidified, and then granulated. Further, as anionic surfactants and/or nonionic surfactants having detergent activity, (
a) Alkylbenzene sulfonate; Sulfonated product of alkylbenzene having an alkyl group having an average carbon number of 9 to 15 (b) α-olefin sulfonate; Wax scratching method, ethylene polymerization method using a Ziegler catalyst, or these ClO-C2O obtained by improved method
It is obtained by using α-olefin as a raw material, after sulfonation reaction by a known method, neutralization with an alkali, and then hydrolysis.

(c) Alkyl sulfate; sulfate of higher alcohol having an average carbon number of 8 to 20 (
Secondary, unsaturated, branched chain may be present) (d) Alkyl ether sulfate; After adding 1 to 10 ethylene oxides on average to a higher alcohol having an average number of carbon atoms of 10 to 18, sulfation 2nd class,
(e) Alkanesulfonate: N-paraffin having an average carbon number of 10 to 20 is sulfoxidized to form an alkanesulfonic acid, and then neutralized.

(f) α-Sulfo fatty acid ester: A sulfonated methyl or ethyl ester of a fatty acid having an average carbon number of 10 to 20.

(Support) Alcohol ethoxylate; Alkyl group having 8 to 15 carbon atoms, EOP-5 to (h) Alkylaryl ethoxylate; Alkyl group having 7 to 15 carbon atoms, EOP-5 to It is 1 to 30% by weight.

The above are essential components of the present invention, but optional components such as builders and chelating agents are used in combination.

Optional ingredients include inorganic builders such as sodium silicate, sodium carbonate, sodium tripolyphosphate, sodium pyrophosphate, sodium orthophosphate, aluminosilicate, polycarboxylic acid salts (for example, maleic anhydride, acrylic acid polymers, or olefins) copolymer),
Organic builders such as sodium nitrilotriacetate (NTA) and sodium citrate, organic chelating agents such as EDTA,
Examples include anti-restaining agents such as carboxymethyl cellulose (CMC), rinsing improvers such as soaps, anti-caking agents, fluorescent whitening agents, fragrances and the like. Example 1 (Experimental washing 1-9
) Nine compositions were made with the following compositions, and their flexibility, detergency,
Foaming was measured and the results are shown in Table 1.

However, the detergency, flexibility (texture) and foaming properties were determined by the following test methods. Cleaning power test 1 Attach the test cloth (No. 60 cotton prod) to the collar of the dress shirt,
Prepare one that has been worn for 2 to 5 days and removed after becoming contaminated, and a skin shirt (cotton knitted) that has been worn for another 2 to 3 days.

Twenty sample cloths contaminated in this way, a skin shirt, and a clean cotton towel were washed with a detergent concentration of 0 using a jet-type household electric washing machine.
133%, liquid temperature 25°C, bath ratio 30 times for 10 minutes, and then rinsed twice for 3 minutes each.

The cleaning efficiency is determined from the following formula by measuring the reflectance of the dirty cloth before and after cleaning using a scanning photoelectric reflectance meter. Using a test cloth made of
The air-dried test fabric was conditioned under the following conditions. A nylon tricot cloth was taken out of the test cloths thus obtained, and 10 judges were selected and judged based on feel.

Items washed with a commercially available detergent (Lion Yushi Co., Ltd. product Spark) and then treated with a commercially available soil softener (Lion Yushi Co., Ltd. product Soflan S) were given 2 points, and items washed only with a commercially available detergent were given O. The score was given as a point, and the middle point was taken as 1 point, and the total score of 10 people was used.

Foaming Test Under the conditions of the detergency test, the foam generated after washing was leveled over the entire water surface and the height of the foam was measured.

From the soil surface results, the composition of the present invention (Experiment A6.1-9)
It can be seen that compared to the comparative example (experiment/F6.1O~17), the softness, detergency, and foaming properties of the sample were superior.

Example 2 (Experiment A6.18-21) Tables 2 show the results of examining the influence of the types of α-olefin sulfonic acid sodium and cationic surfactant in the combinations of the following formulations.

Note (1) Obtained by spray-drying a 45% slurry of cationic activator/tripolyphosphate sorter Z magnesium sulfate-25/35/40 with a disk type spray. From the results in Table 2, the Examples are compared to the Comparative Examples. It can be seen that it has excellent flexibility, detergency, and foaming properties.

Example 3 (Experiment 7f6.26-34) The combination of the following formulations was excellent in detergency, flexibility, and foaming.

Claims (1)

[Scope of Claims] 1. A detergent composition characterized by containing the following (a), (b), and (c). (a) 2 to 10% by weight of α-olefin sulfonates having a carbon number ranging from 20 to 24, with the proportion of carbon 22 being at least 35% by weight; (b) General formula ▲ Numerical formula, chemical formula, table, etc. ▼ (Here, R_1 and R_2 are alkyl groups or alkenyl groups having an average number of carbon atoms of 10 to 22, R_3 and R_4
is an alkyl group having 1 to 3 carbon atoms, and X represents a halogen atom). (c) 1 to 30% by weight of an anionic and/or nonionic activator having detergent activity.