JPS61166897A - 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 (Field of Industrial Application) The present invention relates to a novel detergent composition, and more specifically (
This invention relates to a phosphorus-free detergent composition with excellent detergency.

(Prior art) Sodium tripolyphosphate has traditionally been most widely used as a builder component in synthetic detergents, but in recent years, from the perspective of preventing environmental pollution, studies have been conducted on phosphorus-free products, and in particular, alternative builders for phosphorus-free products have been studied. is being actively developed.

A typical example of a phosphorus-free detergent is the use of synthetic zeolite as an alternative builder, but this method does not provide sufficient builder performance, so attempts have been made to improve performance by using other builders in combination. For example, JP-A No. 58-57098 discloses that the builder performance is improved by using synthetic zeolite and polycarboxylic acid in combination with α-olefin sulfonate. However, in this method, the target surfactant is limited to α-olefin sulfonate, and there is a problem that the improvement effect cannot be obtained with general-purpose surfactants such as dodecyl penzeone sulfonate. TaO
(Problems to be Solved by the Invention) Therefore, the present inventors conducted intensive research to find a method for improving the detergency of synthetic zeolite-based phosphorus-free detergents regardless of the type of surfactant. It has been discovered that it is effective to use a water-bathable salt of a copolymer of polymerized ethylenically unsaturated dicarbonate and olefin, and based on this knowledge, the present invention has been completed.

(Means for Solving the Problems) Thus, according to the present invention, synthetic zeolite 1 is blended into an organic detersive surfactant as a virgoo component, and furthermore, 70 to 95 mol of an ethylenically unsaturated dicarboxylic acid component and an olefin component 5A are blended into an organic detersive surfactant. A thermophosphorus-based detergent composition containing a water-soluble salt of a 50 mol-0 copolymer is provided.

The organic detersive surfactants used in the present invention are selected from anionic surfactants, nonionic surfactants and amphoteric surfactants.

Examples of anionic surfactants include sodium dodecylbenzenesulfonate, magnesium dodecylbenzenesulfonate, potassium tetradecylbenzenesulfonate,
Dobuflutoluenesulfone ammonium, lithium pentadecylbenzenesulfonate, dioctylbenzenesulfone), higher alkylbenzenesulfonates such as IJium, disodium dodecylbenzenedisulfonate, and alkylnaphthalenes such as disodium diisopropylnaphthalene disulfonate. Sulfonate, α
- Examples include olefin sulfonates, alkali metal salts of sulfonated mineral oils, alkali metal salts of sulfonated abiethylene acid, and alkali metal salts of sulfoconophosphates. Condensation products of hydrophobic compounds such as group alcohols, fatty acids, aliphatic glycerides, aliphatic amines, aromatic amines, aliphatic mercaptans, and tall oil with alkylene oxides (e.g., ethylene oxide, propylene oxide, etc.), higher grade Condensation products of fatty acid glycerol esters, glycol esters, pentaerythritol esters or polysaccharides with alkylene oxides, dimethyldodecylphosphine oxide, dimethyltetradecylphosphine oxide, dimethylstearylphosphine oxide Examples include phosphine oxides, higher sulfoxides such as dodecylmethyl sulfoxide, tetradecylmethyl sulfoxide, and 5-hydroxytridecylmethyl sulfoxide, and higher tertiary amine oxides such as dimethyldecylamine oxide. , As the amphoteric surfactant, sodium 5-dodecylaminoglobionate, sodium 3-dodecylaminopropane sulfonate,! +-(N,N-dimethyl-N-
Sodium hexadecyl ammonio)furopane-1-sulfonate, sodium 5-(N,N-dimethyl-N-hexadecyl ammonio)-2-human cIΦylpropane-1-sulfone, etc. can be used.

The blending amount of these organic detersive surfactants is usually 1 to 50
weight s, preferably 5 to 30 weight - O Synthetic zeolites refer to aluminosilicates with a three-dimensional skeletal structure, S10! and A/! There are many types of zeolite depending on the molar ratio and crystal structure of 03, but the synthetic zeolite used in the present invention has the basic functions of the builder, such as carbon
, ++ There are no particular limitations as long as the particles are fine particles with excellent exchange performance. Among them, type A synthetic zeolite is preferred, and its average particle size is suitably 10 μm or less, preferably 7 μm or less.

A specific example of such a synthetic zeolite is crouton (
Examples include Mizusawa Chemical Industry) and Toyo Builder (Toyo Soda Industry).

The blending amount of such synthetic zeolite is usually 1 to 50% by weight, preferably 5 to 50% by weight.The copolymer, which is another essential component in the present invention, contains 70 to 95 moles of ethylenically unsaturated dicarbonate units. 5 preferably 75-90
Molty and olefin units 5 to 50 Molty, preferably 1
0 to 25 molar mass, and number average molecular weight (vpo
(measured by) 500 to 50,000, preferably 1,0
Ethylenically unsaturated dicarboxylic acid anhydrides that can be used include maleic anhydride, itaconic anhydride, and traconic anhydride. maleic anhydride is used.

The other raw material olefins are olefins having 4 to 10 carbon atoms, and specific examples thereof include butene-1゜isobutylene, phtadiene, pentene-1, pentene-2,2-methylbutene-1,2-methylbutene-2, hexene. -1,
Octene-1, diiso.

Examples include phthylene, thecene-11 cyclopentene, cyclohexene, cyclopentadiene, and isodalenato, among which monoolefins having 4 to 6 carbon atoms and monoolefins having 5 carbon atoms are used. Two or more types can be mixed and used.

Such copolymers are produced by a variety of known methods. For example, it can be obtained by carrying out a polymerization reaction in a solvent using a radical initiator at a temperature of 30 to 200°C, separating and removing the bath agent, and then hydrolyzing and neutralizing to produce a water-soluble salt.

As salts for producing water-bathable salts, alkali metal salts such as sodium and potassium salts, amine salts such as ammonia, triethylamine, triethanolamine, etc. are used, and among them, sodium salts are preferred from the viewpoint of economical efficiency. used.

The molar ratio of the ethylenically unsaturated dicarboxylic acid to the olefin in the copolymer is an important requirement of the present invention, and if the amount of ethylenically unsaturated dicarboxylic acid is less than 70 mol, the metal sequestration effect required for the detergent builder will decrease. If the amount exceeds 95 mol %, the effect of promoting stain removal and preventing re-contamination will be insufficient.

This copolymer has good compatibility with organic detersive surfactants and can be used in a wide range of applications, but from the viewpoint of effectiveness, the blending amount is preferably 1 to 20% by weight.

At this time, as long as the effects of the present invention are not essentially impaired, commonly used compounding agents such as other builders, enzymes,
It is also possible to use a restaining inhibitor, an assimilation inhibitor, a fluorescent dye, a fragrance, etc. in combination.

(Effects of the Invention) Thus, according to the present invention, a phosphorus-free detergent with excellent detergency can be obtained regardless of the type of surfactant.

(Example) The present invention will be described in more detail with reference to Examples below. In addition, parts and percentages in the examples are based on the weight of a hook without any breaks. The properties of the samples used in the test are shown in Table-
1, and the method for evaluating detergency is as follows.

Table 1 Samples used in this comparative example (test method) A standard cloth (pure wool muslin fabric) of about 2F is degreased, dried and weighed to determine the anhydride.Next, the standard cloth is sufficiently immersed in a 10% ether solution of pharmacopoeial olive oil. After that, it is deliquified and dried, and then absolutely dried to determine the constant weight, and the amount of olive oil added is determined from the difference with the degreased dry standard cloth.Next, using an aqueous solution with a cleaning composition concentration of 0.125%, a round-o-meter is used. A cleaning test is carried out at a temperature of 40 °C for 950 minutes. After cleaning, the cleaning solution is removed and the cleaning test is carried out again at a temperature of 40 °C for 10 minutes.
Rinse with water repeatedly for 6 minutes at a time, dehydrate and dry, and remove the amount of residual fat using a conventional method. The detergency is calculated using the following formula.

Example 1 25% linear sodium dodecylbenzenesulfonate, 15% synthetic zeolite (Jilton, manufactured by Mizusawa Chemical Industry Co., Ltd., average particle size 10μ), 10% IJum, 1% carboxymethyl cellulose, balance amount of sulfuric acid A detergent composition with a water content of 1 to 5% was prepared by blending 10% of the various water-soluble polymer salts described above, and its detergency was evaluated. The results are shown in Table-2.

From the results in Table 2, it can be seen that a remarkable improvement effect is achieved only when using a polymer with a specific composition. A test was conducted in the same manner as in Example 1 except that the cleaning power was 74%.

Example 6 A test was carried out in the same manner as in Experiment No. (1 to 1) of Example 1 except that the blending ratio of synthetic zeolite was reduced to 10%, and the detergency was 74%.0 Example 4 Surface activity The procedure was repeated in the same manner as in Experiment No. (1-1) of Example 1, except that 60% sodium @chain dodefulbenzenesulfonate and 4% sodium polyoxyethylene alkyl ether sulfate (c12 to c15) were used as agents. When tested, the cleaning power was 73%.

Claims (1)

[Claims] 1. In a phosphorus-free detergent composition comprising an organic detersive surfactant (A) and a synthetic zeolite (B) as a builder component, an ethylenically unsaturated dicarboxylic acid component of 70 to 9
A detergent composition comprising a water-soluble salt (C) of a copolymer of 5 mol % and an olefin component of 5 to 30 mol %.