JPS63161097A - Detergent composition - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a detergent composition that has good detergency and rinsing properties, and also greatly reduces the degree of yellowing of washed items due to iron in tap water.

Ever since problems such as eutrophication of Jubei-Kio phosphate lakes came to light,
Research into alternative builders for phosphates has begun. Zeolite (aluminosilicate) is the most promising phosphate alternative builder, and is actually included as a builder in Ichisaka's phosphorus-free detergent. One of the promising alternative builders for phosphates is polymer builders such as sodium polyacrylate.

Japanese Patent Publication No. 54-38122 discloses a detergent composition in which a specific polyacrylate and a surfactant are combined. However, the patent differs from the present invention in combination and also has a different purpose.

Japanese Patent Application Laid-open No. 60-21000 states that the molecular weight is approximately 2,000.
Disclosed are detergent compositions containing polyacrylates having a polyacrylate of from about 10,000 to about 10,000. However, this known invention clearly differs from the present invention in the molecular weight of the polyacrylate, and there is no suggestion that the polyacrylate of the present invention exhibits any specific effects.

It is also known to use the zeolites and polyacrylates as phosphate replacement builders. JP-A-58-11598 and JP-A-58-20409
No. 8 discloses a cleaning composition containing zeolite and polyacrylate. however,
Both of these inventions have the main effect of improving powder physical properties, and do not imply the effects of the present invention.
The configuration is also different from the present invention.

On the other hand, many studies have been conducted to incorporate calcium-insensitive surfactants as phosphorus-free detergents, and α-olefin sulfonate is a representative example. Although α-olefin sulfonate has good detergency, its rinsability is very poor.
It has the disadvantage that a large amount of water is required in the rinsing process. This causes a large amount of iron contained in the water used in the rinsing process to adhere to the items to be washed, causing yellowing of the items to be washed, resulting in a very inconvenient finish.

These drawbacks are not problems that can be solved simply by using polyacrylates and zeolites.

An object of the present invention is to prevent yellowing of washed objects during the rinsing process in a detergent composition containing an α-olefin sulfonate as an anionic surfactant.

Constitution of the Invention The cleaning composition of the present invention is characterized by containing the following components (a) to (d).

(a) Anionic surfactant containing α-olefin sulfonate as an essential component: 10 to 30% by weight, (b) Nonionic surfactant represented by the following general formula (I) - 0.1 to 5% by weight , 1A2...(I) (In the formula, R and R2 represent an alkyl group having 1 to 15 carbon atoms, and the total number of carbon atoms of R and R2 is 7 to 17.A
1 and A2 are -H or -CH, and one is -C
H, the other is -H. m and n are each positive numbers from 1 to 15. ) (C) Aluminosilicate: 5 to 30% by weight, (d) Polycarboxylate with a molecular weight of about 10,000 to 50,000 represented by the following general formula (n): 0.5 to 3% by weight +CH2-CH0 Magazine 600M (II) (M: Alkali metal salt) The present invention will be described in more detail below.

Specific examples of the anionic surfactant as component (a) include the following (1) to (5), which may be one or two types.
Although it is used as a mixture of more than one species, α-olefin sulfonate is essential.

(1) α-olefin sulfonate having an average carbon number of 10 to 20, (2) Straight chain alkylbenzene sulfonate having an alkyl group having an average of 10 to 16 carbon atoms, (3) Straight chain having an average carbon number of 10 to 20 or an alkyl ether sulfate or alkenyl ether sulfate having a branched alkyl group or alkenyl group and to which an average of 0.5 to 8 moles of ethylene oxide is added; (4) having an alkyl group having an average carbon number of 10 to 20; Alkyl sulfate, (5) α-sulfo fatty acid salt or α-sulfo fatty acid ester salt represented by the following general formula.

R-CHCOY S○3Z (In the formula, Y is an alkyl group having 1 to 3 carbon atoms or a counter ion, Z is a counter ion, and R is an alkyl group or alkenyl group having 10 to 20 carbon atoms.) α-olefin sulfone The acid salt is an indispensable component in terms of detergency and powder physical properties when granulated as a product. α-olefin sulfonate is obtained, for example, by sulfonating an α-olefin having 10 to 20 carbon atoms using S○ gas in a conventional manner, and then hydrolyzing it in the presence of an alkali, and is usually a sodium salt. In the present invention, the α-olefin sulfonate is present in the detergent composition.
The content is preferably 15% by weight. The total content of anionic surfactants used in the present invention is 1% in the cleaning composition.
0 to 30% by weight, preferably 15 to 25% by weight.

If the content of the anionic surfactant is less than 10% by weight, good detergency cannot be obtained, and if it exceeds 30% by weight, good rinsability cannot be obtained, which is not preferable.

As the nonionic surfactant of component (b), one represented by the following general formula (I) is used (hereinafter referred to as polyether).

...(1) (In the formula, R1 and R2 represent an alkyl group having 1 to 15 carbon atoms, and the total number of return primes of R and R2 is 7 to 17.A
1 and A2 are -H or -CH, and when one is 10H, the other is -H. m and n are each positive numbers from 1 to 5. ) This polyether can be obtained by block polymerization or random polymerization of propylene oxide (PO) and ethylene oxide (E O) to a secondary alcohol, and the number of moles of PO and EO added is in the range of 1 to 15. is preferable, and more preferably the number of added moles of PO is 3 to 3.
10, the number of moles of EO added is in the range of 5 to 12. If the number of moles of PO and EO added is outside the above range, not only will a good anti-yellowing effect not be obtained, but other performances such as foaming and rinsability will also be adversely affected, which is undesirable.

(b) The content of polyether in the cleaning composition is 0.1
-5% by weight, preferably 1-3% by weight. If the polyether content is less than 0.1%, excellent anti-yellowing effect cannot be obtained, and if it exceeds 5% by weight, foaming during washing will be significantly reduced, which is not preferable.

The aluminosilicate of component (c) is a water-insoluble calcium ion-exchangeable inorganic salt, and contains at least 120 mg Ca
It has an ion exchange capacity of O/1 g ($ on dry matter), has an average particle size of 7 μm or less, preferably 1 μm or less, and has a crystallinity of 0 to 100%, preferably 80% or more. A-type zeolite is particularly preferred.

(c) The content of aluminosilicate is in the range of 5 to 30% by weight, preferably 10 to 20% by weight in the cleaning composition. If this content is less than 5% by weight, good detergency cannot be obtained, and the detergency particularly decreases markedly at high hardness.

On the other hand, if it exceeds 30% by weight, the viscosity of the detergent slurry will increase significantly, which is not preferable in the detergent manufacturing process.

The polycarboxylate component (d) is a homopolymer of acrylic acid, and its average molecular weight is about 12,000 to
about 50,000, preferably about 15,000 to about 30,000.
The range is 000. If the molecular weight deviates from this range, a complementary effect with the nonionic surfactant (polyether) of component (b) will not be obtained, and a good anti-yellowing effect will not be exhibited.

(d) The polycarboxylate is present in the cleaning composition at 0.0%.
It is blended in an amount of 5 to 3% by weight, preferably 1 to 1.5% by weight. If the blending amount is 0.5% by weight, a good anti-yellowing effect cannot be obtained, and if it exceeds 3% by weight, insoluble substances will be produced during washing, which is not preferable.

Further, in the cleaning composition of the present invention, the weight ratio of (b) nonionic surfactant and (d) polycarboxylate is (b): (d) = 1: 3 to 5:1, preferably 1. : It is necessary to mix in a ratio of 2 to 4:1. If the ratio is outside of this range, it will be difficult to use both components in a complementary manner to exhibit the yellowing prevention effect.

In addition to the above-mentioned essential components, the detergent composition of the present invention may contain ordinary detergent components as optional components, if necessary. Specific examples of these optional components include the following.

- Surfactants such as alcohol ethoxylates, nonylphenol ethoxylates, cationic surfactants such as dialkyldimethylammonium quaternary salts, alkyltrimethylammonium 4R salts, and amphoteric surfactants such as carboxybetaine and sulfobetaine.

・Organic builders such as polyacetal carboxylate, nitrilotriacetate, and ethylenediaminetetraacetate.

・Inorganic neutral and alkaline builders such as sodium silicate, sodium carbonate, sodium bicarbonate, and sodium sulfate.

Among these, sodium silicate is added in an amount of 5% or more, preferably 10 to 20%, to improve the powder strength of the detergent particles.
(preferably).

-Enzymes such as amylase, protease, and T-hornase.

・Carboxymethyl cellulose, average molecular weight 1, o
Anti-recontamination agents such as polyethylene glycol of oo~10,000.

・Fluorescent bleach, fragrances, pigments, etc.

According to the present invention, a cleaning composition containing an α-olefin sulfonate is formulated by combining a specific nonionic surfactant, a polycarboxylate, and an aluminosilicate in a specific ratio. By doing so, they act reciprocally, without sacrificing good detergency and excellent rinsing ability.
In particular, it is possible to significantly prevent the yellowing of washed items caused by iron during the rinsing process.

Hereinafter, the effects of the present invention will be explained in more detail with reference to Examples, but first, the evaluation method used in the Examples will be described.

The iron colloid contained in the water supply was adjusted to have an iron content of 1 ppn+ to prepare the following test water.

Terg-0-Toast by U,S,Testing
Using an ER, 30 g of cotton knitted test cloth was added, and the cloth was washed for 10 minutes at 120 rpm under the conditions of a washing liquid concentration of 0.14%, a liquid temperature of 25° C., and a liquid volume of 900 mD, and then dehydrated for 1 minute.

Next, it was rinsed for 3 minutes using 900 ffiΩ of water at 25°C and dehydrated for 1 minute. After repeating this rinsing operation twice, the test fabric was air-dried for one day. The b value of the test cloth after air drying was measured using a reflectance meter (Nippon Heavy Industries, Colorimeter Model 100DP), and the difference Δb value from the b value before washing was determined to evaluate the degree of yellowing. A cotton knitted fabric with a 6Δb value of 1 or more, which can be visually identified and has the highest degree of yellowing, was used as the test fabric.

Examples 1-3 The granular detergent composition shown below was prepared by a conventional method.

C14-C engineering. Sodium α-olefin sulfonate
10% by weight sodium dodecylbenzenesulfonate
10% by weight nonionic surfactant
2% by weight aluminosilicate (4A type, Ca
○145mg/g) 15 weight x sodium polyacrylate (average molecular weight: 30,000) 1.5 weight x sodium silicate (S i02 / Na 20 molar ratio = 2.0
10% by weight sodium carbonate
10% by weight sodium beef tallow fatty acid
2 weight 2 polyethylene glycol (average molecular weight 6,000) 1.5 weight 2 optical brightener
0.2% by weight enzyme (alkaline protease: Alcalase 2.0T) 0.3% by weight 2 water 5
Weight S Sodium Sulfate
Balance The nonionic surfactants in the above composition include:
Using the activators shown in Table 1, the degree of yellowing was evaluated and shown in Table 1.

Note) The activators represent adducts of alcohol with E○ (ethylene oxide) and P○ (propylene oxide), respectively, and the numerical values indicate the average number of moles added. EOβ represents the average number of moles of ethylene oxide added.

Examples 4 to 6 Sodium polyacrylates having compositions based on Example 1 and having different molecular weights were used to evaluate their effects.

(Left below) Examples 7 to 9 Using the cleaning compositions shown below, the amounts of nonionic surfactant and sodium polyacrylate (5% by weight in total) were varied as shown in Table 3. We evaluated the effects of time.

C14-C1,α-olefin sodium sulfonate
Sodium dodecylbenzenesulfonate
10% ffi aluminosilicate (4A type, Ca
○145mg/g) 15% by weight sodium silicate (Sio2/Na2O molar ratio = 2.0) 12% sodium carbonate 8% by weight sodium tallow fatty acid
3% water by weight
5% by weight sodium sulfate
Balance procedure amendment February 19, 1988 Commissioner of the Patent Office Black 1) Mr. Yu Akira 1, Indication of the case 1988 Patent Application No. 314633 2, Name of the invention Detergent composition 3, Person making the amendment Case Relationship with Patent applicant 1-3-7 Honjo, Sumida-ku, Tokyo (676) Lion Co., Ltd. Representative Atsushi Kobayashi 4, Agent 6 Contents of amendment (1) 13th line from the bottom of page 16 of the specification Delete the text "(total amount: 5% by weight)".

(2) In the 7th line from the bottom of the same page, change "5% by weight" to lr
3-4% economic recovery.

(3) Table 3 on page 17 of the specification is corrected as shown in the attached sheet.

that's all Attachment

Claims (1)

[Claims] 1. (a) Anionic surfactant containing α-olefin sulfonate as an essential component: 10 to 30% by weight, (b) Nonionic surfactant represented by the following general formula (I) : 0.1 to 5% by weight, ▲There are mathematical formulas, chemical formulas, tables, etc.▼...(I) (In the formula, R_1 and R_2 represent an alkyl group having 1 to 15 carbon atoms, and the total carbon of R_1 and R_2 The number is 7 to 17. A^1 and A^2 are -H or -CH_3, and when one is -CH_3, the other is -H. m and n are each positive numbers from 1 to 15 ) (c) Aluminosilicate: 5 to 30% by weight, (d) Molecular weight approximately 12,000 represented by the following general formula (II)
~ About 50,000 polycarboxylate: 0.5 to 3% by weight ▲There are mathematical formulas, chemical formulas, tables, etc.▼...(II) (M is an alkali metal salt) Contains the above (b)
and (d) component in weight ratio (b):(d)=1:3~
1. A cleaning composition characterized in that the cleaning composition contains 5:1.