JPH02289698A - Liquid detergent composition for fiber pretreatment - Google Patents

Abstract

PURPOSE: To provide the title composition suitable for removing partial stains before washing by incorporating water, an enzyme, a surfactant, propanolamine, an organic acid, a water-soluble glycol, and the like in a specified ratio.

CONSTITUTION: The intended composition comprises (A) 60% (by weight) or more (preferably 75 to 98%) water,, (B) 0.001 to 2.0% enzyme (concentrate) selected from among proteazes and enzymes that break proteins, lipids, celluloses, or starches, (D) 0.1 to 5% propanolamine, (E) an organic acid in an amount enough to bring the pH to 5 to 12, (F) 0 to 30% liquid and/or water- soluble glycol, and if necessary (G) 5% or less other additive.

COPYRIGHT: (C)1990,JPO

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to detergent compositions for the pretreatment of textiles, and in particular to liquid stain removers suitable for spot-removal of laundry prior to laundering in the conventional manner. In order to remove stubborn stains from laundry, pre-treatment with a liquid stain remover, so-called pre-stain remover, has become common practice. If you treat it beforehand, the dirt will come off better when you wash it normally. Many products for removing stains are based on nonionic surfactants, such as ethoxylated nonylphenol, in combination with sodium citrate and wood. Also, based on alkanes and isobrobyl alcohol,
Products made by adding water and ethoxylated fatty alcohols are also known. A variety of such detergent compositions are known in the literature and on the market. For example, French Patent Publication No. 2,448,568 discloses a stain remover for removing oil stains consisting of large amounts of nonionic surfactants, organic solvents, water, enzymes and alkanolamines. This type of pretreatment composition has specific uses. In other words, it is applicable only to one type of dirt. The object of the present invention is to develop a liquid detergent for treating textiles of a general type, which can be applied to virtually all types of stains and which has a clearly improved effect over previously known pretreatment compositions. The purpose is to provide a composition. Thus, according to the invention, based on the total detergent composition, a. at least 60% water by weight; b. 0.001 to 2.0% by weight of enzyme, c. 0.01
to 5% by weight of nonionic and/or anionic surfactants, d. 0.1 to 5ffiM% brobanolamine, preferably isobrobanolamine, e. 5 to 12 p
at least one organic acid in an amount up to a value of 11, f. O to 30% by weight of liquid and/or water-soluble glycols, and optionally further g. A liquid detergent composition for textile pretreatment is provided, comprising an amount of other additives not exceeding 5% by weight. Surprisingly, it has now been discovered that the composition according to the present invention has an excellent cleaning effect on all kinds of stains. Importantly, the composition contains a predetermined amount of water in combination with the enzyme, surfactant and isopropanolamine. By using this combination, a sufficient stain removal effect was obtained, and it is thought that the aggregation parameter of isobrobanolamine in the system, working together with other active ingredients, greatly contributed to achieving this effect. Cohesion parameters are one measure of material properties suitable for various applications. Regarding this, for example, A. F. M.
Barton's “Handbook of Solubi”
property parameters and ot
her cohesion parameters”
1983, CRC. Press Inc. Please refer to ISBN O-8493-3295-8. Cohesion of substances is related to forces acting between molecules, such as dispersion forces, dipole interactions, induced dipole interactions, and hydrogen bonds. Simply put, van der Waals forces are involved in the cohesion of substances. ing. Cohesion parameter (coh
esionparameter) is calculated as the square root of the quotient of energy content/mole and molar volume. Substances with the same cohesive parameters are very soluble in each other. The value of the agglomeration parameter can be determined experimentally or can also be calculated from the atomic group composition of the molecule (Ba
(See chapter 6 of rton's hunt book). The important advantages of the detergent composition according to the invention are as follows. That is, the composition is simple, the amount of ingredients that irritate the skin, if any, is extremely small, and there are no ingredients present in amounts that would have an ecological impact. Furthermore, the detergent composition according to the invention is substantially odorless. This is something that conventional oil stain removers do not have. Although the detergent composition according to the present invention is composed of the above-mentioned components, it is preferable to also incorporate polyglycol and/or polyglycol ether into the detergent composition.
This further improves the effectiveness. The glycols and/or glycol ethers used are preferably dibrobylene glycol and/or hexylene glycol and/or ethylene glycol. In particular, it is preferable to use a mixture of these two types of compounds in a weight ratio of 0.5 to 2. Ingredients that promote stain removal of certain types of soils can also be included in the composition. For example, oleic acid can be added to remove oil stains, and nitrilotriacetic acid can also be used to bind metal salts, among others. Furthermore, the overall stain removal action of the composition according to the invention can be enhanced, for example, by incorporating urea. In order to obtain a suitable effect, the detergent composition according to the invention has a pH value of between 5 and 12, more particularly between 6 and 9.
It should have a 9H value of . The most satisfactory effect is obtained within this pH range. Adjustment of the pH value can be carried out by first dissolving all ingredients and then adding an organic acid until the desired pH value is achieved. Suitable organic acids include citric acid, formic acid, and benzoic acid. Surfactants can be anionic or nonionic surfactants. Since it is preferable to limit the amount of metal ions contained in the detergent composition according to the invention to as low as possible in order to obtain a better cleaning effect and to obtain a stable product, alkanol ethoxylates such as fatty alcohol ethoxylates are preferred. It is preferable to use nonionic surfactants such as Preferably an average of 7 per molecule
Particular preference is given to using nonionic surfactants based on ethylene oxide adducts having from 9 to 9 ethoxylene oxide units. The amount of surfactant to be used is 0.000, based on the total detergent composition. Ol to 5j [[amount% range, 0.1
The most satisfactory results are obtained when 2% to 2% by weight is used. Anionic surfactants can also be used.
Considering the condition of minimizing the amount of metal ions entering the detergent system, it is preferable to use a nitrogen base as the cation. Suitable nitrogen bases are amines such as ethanolamine. Preferably, the amount of metal ions contained in the detergent composition according to the invention does not exceed 0.1% by weight. If the metal ion concentration is higher than this, problems arise in the stain removal effect of the detergent composition according to the present invention. In addition to the above-mentioned main components, a sequestering agent such as nitrilotriacetic acid can also be included in the detergent composition of the present invention in order to bind calcium and magnesium ions to the washing water. The amount of sequestering agent used can be selected within a wide range. 0.1 to 4'f!
The range of i amount% is appropriate. Enzyme concentrates are commonly used in dosages, ie, 0.001 to 2.0% based on the weight of the total composition.
Used in an amount of 0% by weight. Suitable enzymes are selected from the group consisting of proteolytic enzymes, lipolytic enzymes, cellulolytic enzymes, and adenogenic enzymes. Generally, proteolytic enzymes, or proteases, are the most dangerous. However, combinations of lipolytic, cellulolytic, and amylolytic enzymes can also be used. These enzymes can be used in pure form or in the form of enzyme concentrates. Other additives may be present in the detergent compositions of the invention in amounts of up to 5% by weight. Specific examples of other additives include fragrances, colorants, bleaching agents, and thickening agents. The detergent composition according to the present invention can be easily prepared by simply dissolving the above-mentioned components. It is also possible to form the stain remover according to the invention into a cast by adding a gelling component or a paste-forming component in an amount sufficient to obtain a processable paste. Such a paste-like composition can be conveniently used by applying it over the stain. The present invention will be further explained below with reference to Examples. These examples are illustrative and do not limit the invention. Shi▲1 A number of compositions were compared with each other in terms of stain removal activity. 5 people dish 2 hexylene glycol 10.0% ethylene glycol 10.0% First, the reflectance of each sample cloth was measured, and the samples were soaked in each composition for 15 minutes.
After washing the cloth in the test equipment with a regular detergent, the reflectance of the cloth was measured again. The results are shown in the table below. Benzoic acid 0.1% formic acid
Aminoalkanol up to about 2.5%
4.0% water Zo in total
Up to o%. Amount of stain remover on fabric: 2g. Soaking time: 5 minutes. Washing time =
30 minutes. Washing temperature =
30℃. Tests were conducted using a number of compositions having the above basic compositions on a number of sample fabrics. The sample cloth was the following standard contaminated cloth. 3. Sunak Ditto Sugar, Wine Literature: Detergency”Theory and
“Testsets” Part II
, (Mr. Fung. G. Culter and R. C. Davi
es) New York, 1975, 539 pages. The results compared with the control are summarized in the table below. The above examples clearly show that compositions containing isoprobanol are superior. 2h Three compositions A, B, and C were tested using a large number of household laundry items. The laundry was sorted by the number and nature of the stains, so that each laundry lot contained approximately the same number of stains. The stains were pretreated with equal amounts of the detergent composition.
Afterwards, the laundry was washed with a neutral detergent to make the difference more obvious. The composition of the detergent composition used and the test results are shown in the table below. L--1 Composition (wt%) ABC 2.5 Set Isopropanolamine Morpholine Nonionic surfactant Sodium citrate Enzyme Ethylene glycol 2.5 2.0” 2.0” 8” o.s
o. s l0 Jib Mouth Pyrene Glycitric Acid Concentrator Mizurei Synperonic Honjo Nonylphenokol 10 up to pll8 1.0 100%! So A71 part, oxidized Arlu 7EO pH up to 9 1.0 100%! ? 100%! r min 1 part. Composition table-2- AB 7.7 11.8 C 10.4 8.7 8 No treatment

Claims (1)

Claims: 1. Based on the total detergent composition: a. at least 60% by weight of water; b. 0.001 to 2.0% by weight of enzymes; c. 0.01 to 5% by weight. nonionic and/or anionic surfactants, d. 0.1 to 5% by weight of propanolamine, e. at least 1 in an amount up to a pH number of 5 to 12.
for fiber pretreatment, containing f, 0 to 30% by weight of liquid and/or water-soluble glycols, and optionally further g, other additives in an amount not exceeding 5% by weight. Liquid detergent composition. 2. Dipropylene glycol and/or glycol
The detergent composition according to claim 1, further comprising ethylene glycol and/or hexylene glycol. 3. Dipropylene glycol and ethylene glycol are 0
．． A detergent composition according to claim 2, wherein the detergent composition is used in a weight ratio of 5:2. 4. The detergent composition according to any one of claims 1 to 3, containing 75 to 98% by weight of water. 5. The detergent composition according to any one of claims 1 to 4, containing at least one enzyme or enzyme concentrate selected from the group consisting of proteolytic enzymes, lipolytic enzymes, cellulolytic enzymes, and amylolytic enzymes. . 6. The detergent composition according to any one of claims 1 to 5, further comprising an agent selected from the group consisting of a thickening agent, a fragrance, and a coloring agent as an additive. 7. The detergent composition according to any one of claims 1 to 6, which contains at least one compound selected from the group consisting of alkanol ethoxylates and/or amine oxides as a nonionic surfactant. 8. The detergent composition according to claim 7, which contains at least one fatty acid ethoxylate having an average of 5 to 9 units of ethylene oxide per molecule of alkanol ethoxylate. 9. Claim 1 containing 0.1 to 3.5% by weight of organic acid
8. The detergent composition according to any one of 7. 10. A detergent composition according to any one of claims 1 to 9, having a pH value of 5.5 to 9. 11. The detergent composition according to any one of claims 1 to 10, containing citric acid, acetic acid and/or formic acid as the organic acid. 12. A detergent composition according to any one of claims 1 to 11, containing up to 2.5% by weight of a nonionic surfactant. 13. The detergent composition according to any one of claims 1 to 12, wherein the content of alkali metal ions and alkaline earth metal ions does not exceed 0.1% by weight. 14. A detergent composition according to any one of claims 1 to 13, containing an anionic surfactant in combination with a nitrogen base. 15. The detergent composition according to any one of claims 1 to 14, containing isopropanolamine as the propanolamine.