JPS61113696A - Liquid 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 liquid detergent composition that has excellent cleaning properties and has good drainage properties after rinsing items to be washed.

In addition to cleaning power and foaming power, it is important that a cleaning composition used for cleaning ceramics and pottery leaves a beautiful surface after cleaning. As a method that does not leave sushi or spots after drying, cationic denatured protein (Unexamined Japanese Patent Publication No. 5
9-5238) and cationically modified starch (Japanese Unexamined Patent Publication No. 1983-
50639), specific clay minerals (Japanese Patent Application No. 58-115660) and gelatin (Japanese Unexamined Patent Publication No. 49-947).
01) and casein (Japanese Unexamined Patent Publication No. 52-58710), detergents to which proteins are added are known. However, these cleaning agents use natural products and have some practical problems such as quality control and microbial growth.

An object of the present invention is to provide a liquid detergent composition that has both excellent detergency and drainage properties.

21 Bush 11 The present invention is characterized by containing the following components (A), (B), and (C).

(A) General formula (I) %formula%() (In the formula, R', n and M are as follows.

R'': linear or branched alkyl group of Cs to C□7 n: 3 to 7 M: alkali metal, alkaline earth metal, or substituted or unsubstituted ammonium residue) Alkyl ether sulfate 10 to 40 Weight% CB) General formula (n) R”-Neo (n) (in the formula,
Rm, R1 and R4 are as follows.

1.5 to 10% by weight of tertiary amine oxide (C) Polyvinylpyrrolidone polymer 0.0% to 5% by weight The present invention will be described in more detail below.

Component (A) is alkyl ether sulfate.

It is used as the main active ingredient in cleaning compositions. R″ in the general formula (I) is a linear alkyl group or a branched alkyl group having 9 to 17 carbon atoms; an alkyl group with fewer carbon atoms has poor cleaning performance, and an alkyl group with too many carbon atoms This is undesirable because it reduces the stability of the liquid composition.The preferred number of carbon atoms in the alkyl group R1 is 11 to 14.

Moreover, n in general formula (I) represents the average number of added moles of ethylene oxide, and is 3 to 7.

Even if a molecule with an added mole number outside the range of 3 to 7 is inevitably formed during the production process of alkyl ether sulfate, it is substantially disadvantageous if the average number of added moles is within the range of 3 to 7. There isn't. If the average number of added moles of ethylene oxide (EOi5) is too small, the stability of the liquid will decrease,
If the amount is too large, the foaming power decreases, which is not preferable. EOi
A particularly desirable range of 5 is 3-5. Also, as a counter ion for alkyl ether sulfate.

Examples include alkali metals such as potassium and sodium, alkaline earth metals such as magnesium, ammonium, substituted ammonium residues such as mononitinolamine, and jetanolamine. Such an alkyl ether sulfate is blended in a liquid detergent composition using water as a medium in an amount of 10 to 40% by weight, preferably 15 to 30% by weight. - If this amount is less than 10%, the cleaning performance will be low, and if it exceeds 40% by weight, a large amount of solubilizer will be required for liquefaction, which is not preferred in practice.

The tertiary amine oxide of the component (B) represented by the general formula (II) is a mono-long-chain alkyl-di-short-chain alkyl amine oxide, and R3 in the general formula (n) is a straight alkyl amine oxide having 12 to 14 carbon atoms. It is a chain alkyl group or a branched alkyl group. Here, the number of carbon atoms in R2 represents the average number of carbon atoms,
Even if the alkyl group contains an appropriate number of carbon atoms, such as an alkyl group derived from a natural product, it is substantially effective as long as the average number of carbon atoms is in the range of 12 to 14. A specific example of such a mixed alkyl group, which is preferably mainly composed of an alkyl group having 12 to 14 carbon atoms, is a cocoyl group derived from coconut oil. If the average number of carbon atoms in the long chain alkyl group is less than 12, the foaming power will be poor;
Moreover, if it exceeds 14, problems such as clouding of the composition will occur. R3 and R4 in general formula (II) are methyl groups or ethyl groups, and may be the same or different.The tertiary amine oxide of component (B) may be a single component or may contain two or more types. Can be used in combination.

The tertiary amine oxide as component (B) needs to be present in the liquid cleaning composition in an amount of 1.5 to 10% by weight. If this amount is less than 1.5%, the cleaning performance will deteriorate, and if it exceeds 10% by weight, the water-draining properties of the washed items will deteriorate, making them undesirably water-repellent. A more preferable amount of component (B) is 2 to 4% by weight.

The polyvinylpyrrolidone polymer of component (C) has an average molecular weight of about 30,000 as measured by osmometric pressure measurement.
Polymers ranging from about 400,000 can be used alone or in combination of two or more. Average molecular weight is 30.0
If it is less than 00, it will not show good drainage property, and if it is less than 400,0
If it exceeds 00, it becomes cloudy in one composition, which is not preferable.The more preferable range of average molecular weight is 15Q, 000 to 200,
It is 000. As the polyvinylpyrrolidone-based polymer, a polymer having vinylpyrrolidone monomer as the main constituent unit is used, and representative examples thereof include vinylpyrrolidone homopolymer and vinylpyrrolidone-vinyl acetate copolymer represented by the following general formula (m). 122, and the copolymerization ratio m/m is preferably 1 or more. By setting this copolymerization ratio to 1 or more, preferable water drainage properties can be obtained. The copolymerization of vinylpyrrolidone and vinyl acetate in the above general formula (II) is not particularly limited, and may be random polymerization, block polymerization, graft polymerization, or the like.

Component (C), a polyvinylpyrrolidone polymer, is added to the composition in an amount of 0.01 to 5% by weight. If this amount is less than 0.01% by weight, no water draining effect will be exhibited;
If it exceeds 5% by weight, the viscosity of the composition increases and the stability of the composition also deteriorates, which is not preferable. The preferred amount of component (C) is in the range of 0.03 to 1.5% by weight.

The liquid detergent composition of the present invention is obtained by dissolving the components (A), (B), and (C) above in an aqueous medium, and further contains, in addition to these essential components, which are usually added to detergent compositions. It can contain known components such as Specific examples include surfactants such as other anionic surfactants, both surfactants and nonionic surfactants, and ethyl alcohol, glycerin, polyethylene glycol, and sorbitol in amounts that do not impair the effects of the present invention.

Examples include viscosity modifiers such as propylene gellicol. Lower alkylbenzene sulfonates such as toluene sulfonate and xylene sulfonate have low compatibility with polyvinylpyrrolidone polymers, so it is desirable to use them in an amount that does not cause any adverse effects. Absorbers, antioxidants, preservatives, etc. can also be added as necessary.

According to the present invention, by blending specific amounts of a specific alkyl ether sulfate, a mono-long chain alkyl tertiary amine oxide, and a polyvinylpyrrolidone-based polymer, it is possible to obtain products that cannot be obtained with conventional liquid detergent compositions. The present invention provides a highly practical liquid detergent composition that has excellent water drainage properties from washed objects, and also has excellent functions as a detergent, such as detergency, foaming power, and skin gentleness. This liquid cleaning composition is particularly useful as a cleaning agent for washing dishes such as glassware and ceramics.

Examples Liquid detergent compositions having the compositions shown in Table 1 (balance: water) were prepared, and the foaming power and drainage properties of the items to be washed were evaluated. The evaluation methods and the meanings of the abbreviations in Table 1 are shown below.

(I) Foaming power test An aqueous solution containing 90.15% by weight of the composition was placed in a vat with a diameter of 30 cm and a depth of 12 cm.
After foaming by compressing an air-containing sponge in the liquid 10 times at a liquid temperature of 25°C, sponge each piece 10 times on the front side and 5 times on the back side of a plate coated with 0.5g of butter. The foaming power was defined as the number of dishes that could be washed until the foam height reached 1 mm.

(2) Drainage test 4c+oX6c+aX9c+ soaked with 30g tap water
Collect 1g of the composition on a sponge and scrub the inside and outside of a glass cup with a diameter of 6cr and a height of 12cm.For 3Q, rinse with water 10 times, then add water again and repeat the same operation. After that, the pot was left with its mouth facing up, and its drainage performance was evaluated according to the following criteria.

A: Water falls to the bottom within 2 minutes B: Water falls to the bottom within 5 minutes C: Water does not fall even after 10 minutes D = No water draining is observed (3) Abbreviations in Table 1 (A) Component AES-Na represents an alkyl ether sulfate (Na salt) as shown below (the same applies to other classes).

-1"L"L-1 Dansakusha) Marushinichi Chotetsushi RishiA
ES-Na(I): Glg-t3 80% 3A
ES-Na(n):C,, -1=80%
5A E S -N a (Iff): C1m-
1s ”% 7A E S N a (■
): Cza 40% 4AES-Na
(V): C,, 100% 5AES-Na(VI)
:C□,, 40% 5AES-1/2Mg
:C□2~1,80% 4
,.

AES-NH4(I):C, 100% 4AE 5-N
H4 (II): C, 100% 4 (B) component R" 1 to d amine oxide (r) C12 dimethyl amine oxide (m) clm dimethyl amine oxide (IV) cocoyl dimethyl CC) component PvP is polyvinylpyrrolidone homopolymer of.

PVP/VA stands for a copolymer of vinylpyrrolidone (vp) and vinyl acetate (VA).

Meng Shibang Earth! L B and Δ) Sanhiki Bungoi P V P (I) 10
,000pvp(II)
40,000P VP (m)
160,000P VP (IV)
360,000P V P (V)
70G, 000PVP/VA
(I) 7/3 40,000PVP
/VA(n) 515 40,000
PVP/VA (m) 3/7 40,
000 Optional component C,,AO8-Na: Sodium α-olefin sulfonate having 14 carbon atoms - LAS-Na: Sodium linear alkylbenzene sulfonate having alkyl group having 10 to 12 carbon atoms (blank below)

Claims (1)

[Claims] 1. (A) General formula (I) R^1-O-(CH_2CH_2O)-_nSO_3M
(I) (wherein R^1, n and M are as follows: R^1: linear or branched alkyl group of C_9 to C_1_7 n: 3 to 7 M: alkali metal, alkaline earth (B) General formula (II) ▲ Numerical formulas, chemical formulas, tables, etc. are available ▼ (II) (In the formula, R^2 , R^3 and R^4 are as follows: R^2: linear or branched alkyl group of C_1_2_ to_1_4 R^3: methyl group or ethyl group R^4: methyl group or ethyl group) A liquid cleaning composition characterized by containing 1.5 to 10% by weight of a tertiary amine oxide represented by (C) 0.01 to 5% by weight of a polyvinylpyrrolidone polymer.