JPH0748597A - Detergent - Google Patents

Abstract

PURPOSE: To obtain a detergent having improved washing efficiency and biodegradability by mixing a surfactant with a builder, a laundry aid and a polyglycol diacid.

CONSTITUTION: At least one surfactant in an amount of 5-50 wt.% is mixed with 0.5-60 wt.% builder, a common laundry aid such as crystalline sodium silicate or zeolite A and 3-11 wt.% polyglycol diacid.

COPYRIGHT: (C)1995,JPO

Description

Detailed Description of the Invention

[0001]

The present invention relates to at least one surfactant of 5 to 50% by weight, preferably 10 to 30% by weight, a builder of 0.5 to 60% by weight, preferably 5 to 60% by weight. It relates to detergents with the usual washing aids.

[0002]

The use of silicate-based detergents in combination with organic polycarboxylic acids, such as citric acid or its salts-builders, so-called builders, such as zeolite A and / or crystalline layered sodium silicate is disclosed in European Patent Application. 405
It is known from No. 122A2.

[0003]

Such a polycarboxylic acid enhances the washing efficiency of the detergent to which it is applied and has no significant ecological concern, that is, it has a biologically good degradability. Is desirable. Such requirements also include having a significant lime-binding capacity, which is to be maintained over the temperature range of 20 to 90 ° C. wherever possible, as is usual in household washing.

[0004]

Surprisingly, the present inventors have found that the so-called polyglycolic diacid (CAS-3992).
No. 7-08-7) satisfies these requirements in the broadest sense. 195 mg citric acid at room temperature
Calcium binding value of Ca / g and 30 mg at 90 ° C
Although it has a lime binding value of Ca / g, polyglycol-
The lime-binding capacity of luniic acid is 220 mg Ca /
g and at least 80 at 60 to 90 ° C.
It is mg Ca / g.

In detail, the detergent of the present invention is used in other builders.
In addition to the above, it is characterized by containing 3 to 11% by weight of polyglycolic diacid. Furthermore, the detergent of the present invention contains, in particular, a) 3 to 10% by weight of polyglycolic diacid in addition to crystalline layered sodium silicate, and b) Zeolite A and 7 to 1 of polyglycolic diacid.
It is characterized by containing 0% by weight, or c) containing 5 to 10% by weight of polyglycolic diacid in addition to crystalline layered sodium silicate and zeolite A.

Detergent compositions containing, in addition to crystalline layered sodium silicate and / or zeolite A, a concentration of polyglycolic diacid of from 3 to 10% by weight are mainly very good in terms of dirt removal and inhibition of textile settling. Gives washing efficiency.

[0007]

The present invention will be described in detail based on the following examples. The detergent was produced by the spray mixing method. In this case a rotating drum mixer was used in which the powdered solid components were premixed. The liquid components were then sprayed onto the dry premix. The method of implementation is described in detail in the periodical publication “Seifen,
Fette, Oele, Wachse "99 (197)
3), pp. 351-357.

[0008] ^* ) Comparative example not using polyglycol diacid ^** ) Comparative example of commercial detergent concentrate ^*** ) TAED = Tetraacetylethylenediamine LAS = Linear alkylbenzene sulfonate commercially available from Hoechst (Frankfurt / Main) Commercial detergent The test compositions listed in Table 1 (Examples 1 to 12), which also contain: were subjected to a technical wash test according to the following conditions: Primary wash action (dirt removal) : Main wash step (Miele TMT type, Perforated household washing machine only) Distributor: 100g / washing process Water hardness: 18 ° dH Washing temperature: 40 and 60 ° C Test fabric: cotton with EMPA standard pollution degree (B
W) 101 WFK Polyester / cotton with standard pollution degree (P
E / BW) 2: 1 20C Ballast Fabric: EMPA Cotton WFK Cotton WFK Polyester / Cotton 2: 1 Sus Woven Towel Fabric (EMPA = Swiss Federal Institute for Material Testing St. Gallen, Switzerland; WFK = Washing Academic Survey Krefeld) Contamination Degree of removal is 460 nm for washed test fabrics
Optical diffuse reflectance measurement at
r 3890) and the so-called difference method according to the following formula:% ΔR =% Rg−% Ru% ΔR =% Diffuse reflectance difference (a measure of the degree of decontamination)% Rg =% Diffusion of washed test fabrics Reflectivity% Ru =% Diffuse reflectance of unwashed test fabric Secondary washing action (skin formation) Main washing process: 25 washing cycles Metering: 100 g / washing process Water hardness: 18 ° dH Washing Temperature: 40 and 60 ° C Test- / Ballast Fabric: EMPA Cotton WFK Cotton WFK Polyester / Cotton 2: 1 Sewn Fabric Towel Fabric Textile sedimentation (skin generation) in the form of inorganic ash value at 800 ° C Burning residue (percentage) ) Was measured.

In Table 2, the washing results obtained according to Examples 1 to 12 are shown. Test fabrics BW101 (EMPA) and PE / BW20C (WF in primary washing action
The individual results measured for K) are listed. The secondary wash action is shown in the form of average ash value (average from 5 test fabrics). Obviously, Examples 2 to 4 and Examples 8 to 11 according to the present invention are superior to Comparative Examples 1 and 5, respectively. Moreover, examples 2 to 4 and 8 to 11 according to the invention compared to commercial detergent concentrate No. 12
Clearly shows better washing efficiency. Examples 6 and 7
Zeolite A is generally a marginal case showing, like SKS6, not exhibiting a good washing action, and therefore S
There should be more than 6% by weight of polyglycolic diacid in the detergent when KS6 is not added.

[0010] ^* ) Comparative example not using polyglycolic diacid ^** ) Comparative example of commercial detergent concentrate Anionic surfactant is a water-soluble salt of higher fatty acid or resin acid, such as coconut oil, palm kernel oil or rapeseed oil. And tallow sodium- or potassium soap and mixtures thereof. It also includes higher, alkyl substituted aromatic sulphonates, such as linear alkylbenzene sulphonates (LAS) having 9 to 14 C-atoms in the alkyl residue, alkylnaphthalene sulphonates, alkyls. Toluene sulfonate, alkylxylene sulfonate
Or alkylphenol sulfonate, fatty alcohol
Rusurufe - DOO _{(R- CH 2 -O- SO 3 Na} ; R = C
_11-17 ) or fatty alcohol ether sulfates such as alkali lauryl sulfate or alkali hexadecyl sulfate, triethanolamine lauryl sulfate, sodium or potassium oleyl sulfate, ethylene oxide The sodium- or potassium salt of lauryl sulphate ethoxylated with 2 to 6 mol belongs to this group. Further suitable anionic surfactants are secondary linear alkane sulphonates and α-olefin fluphonates having a chain length of 12 to 20 C-atoms.

The nonionic surfactant is a compound having an organic hydrophobic group and a hydrophilic residue, such as a condensation product of an alkylphenol or a higher fatty alcohol and ethylene oxide (fatty alcohol ether). Terroxylate),
Condensation product of polypropylene glycol and ethylene oxide or propylene oxide, condensation product of ethylene oxide and a reaction product of ethylenediamine and propylene oxide, and long-chain tertiary amine oxide

[0012]

[Chemical formula 1] Finally, zwitterionic surfactants include the following compounds: aliphatic, having 8 to 18 C-atoms and having a hydrophobic group in the aliphatic residue, Derivatives of secondary and tertiary amines or quaternary ammonium compounds, such as sodium-3-dodecylaminopropionate, sodium-3-dodecylaminopropanesulfate, 3- (N, N-dimethyl-N-hexadecyl -Ammonium) -propane-1-sulfone or fatty acid alkyl-N, N-dimethylacetobetaine-wherein the fatty acid contains from 8 to 18 C-atoms and the alkyl residue contains from 1 to 3 C -Contains atoms-
─.

As a washing aid according to the present invention, a weak acid,
Neutral or alkaline reactive inorganic complex salt formers are suitable. Weakly acidic, neutral or alkaline reactive salts which can be used are, for example, alkali bicarbonates or carbonates, also non-surfactant organic sulphonic acids, carboxylic acids and sulphonates containing 1 to 8 C-atoms. It is an alkali salt of carboxylic acid. This includes, for example, water-soluble salts of benzene-, toluene- or xylenesulfonic acid, sulfoacetic acid, water-soluble salts of sulfobenzoic acid or salts of sulfodicarboxylic acids and acetic acid, lactic acid, citric acid, tartaric acid, oxydiacetic acid (HOOC- CH ₂ -O-
CH ₂ —COOH), oxydisuccinic acid, 1, 2, 3, 4
Cyclopentane tetracarboxylic acid, polycarboxylate, polyacrylic acid and polymaleic acid belong. Examples of the organic complex salt-forming agent include nitrilotriacetic acid, ethylenediaminetetraacetic acid, N-hydroxyethylenediaminetriacetic acid or polyalkylene-polyamine-N-polycarboxylic acid.

In addition, the washing aids according to the invention can, if desired, also be products such as sulfuric acid, boric acid, alkylene ,,
It may contain an alkali- or ammonium salt of hydroxyalkylene- or aminoalkylenephosphonic acid, a bleaching agent, a stabilizer for a peroxide (bleaching agent), a water-soluble organic complex salt-forming agent and the like.

More specifically, the bleaching agent is sodium perborate mono- or tetrahydrate, sodium percarbonate, peroxomonohydrate.
Or an alkali salt of peroxodisulfate, an alkali salt of peroxodiphosphoric acid (H ₄ P ₂ O ₈ ) and an alkali salt of peroxocarboxylic acid such as an alkali salt of dipa-oxodecanedioic acid. . Also, for example, water-soluble, precipitated magnesium citrate, organic complex salt-forming agents such as iminodiacetic acid, nitrilotriacetic acid, tetraacetylenediamine (T
AED), methylenediphosphonic acid, 1-hydroxyethane-1,1-diphosphonic acid and alkali salts of nitrilotrismethylenephosphonic acid are used as stabilizers for these bleaching agents.

Washing aids for enhancing the ability of the washing liquid to hold dirt, for example, carboxymethylcellulose, carboxymethyl glue, methylcellulose or a copolymer of maleic anhydride and methylvinylether or acrylic acid, a foam control agent, Mono- and dialkyl phosphates having from 16 to 20 C-atoms in the alkyl radical and brighteners, disinfectants and oxygen, such as proteases, amylases, lipases, are likewise according to the invention. Can be used as an additional component of the detergent.

Claims (1)

[Claims] 1. At least one surfactant 5 to 50.
% Detergent, 0.5 to 60% by weight builder and a conventional washing aid, characterized in that, in addition to the other builder, 3 to 11% by weight of polyglycolic diacid. .