EP0075347B1 - Composition détergente avec une basse teneur en phosphate - Google Patents

Composition détergente avec une basse teneur en phosphate Download PDF

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Publication number
EP0075347B1
EP0075347B1 EP82201090A EP82201090A EP0075347B1 EP 0075347 B1 EP0075347 B1 EP 0075347B1 EP 82201090 A EP82201090 A EP 82201090A EP 82201090 A EP82201090 A EP 82201090A EP 0075347 B1 EP0075347 B1 EP 0075347B1
Authority
EP
European Patent Office
Prior art keywords
detergent
alkalimetal
sodium
weight
percent
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP82201090A
Other languages
German (de)
English (en)
Other versions
EP0075347A3 (en
EP0075347A2 (fr
Inventor
David Pawson
Hermann Rabitsch
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Unilever PLC
Unilever NV
Original Assignee
Unilever PLC
Unilever NV
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Unilever PLC, Unilever NV filed Critical Unilever PLC
Priority to AT82201090T priority Critical patent/ATE18254T1/de
Publication of EP0075347A2 publication Critical patent/EP0075347A2/fr
Publication of EP0075347A3 publication Critical patent/EP0075347A3/en
Application granted granted Critical
Publication of EP0075347B1 publication Critical patent/EP0075347B1/fr
Expired legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/16—Organic compounds
    • C11D3/26—Organic compounds containing nitrogen
    • C11D3/33—Amino carboxylic acids
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/02—Inorganic compounds ; Elemental compounds
    • C11D3/04—Water-soluble compounds
    • C11D3/06—Phosphates, including polyphosphates

Definitions

  • the present invention relates to detergent, cleaning and bleaching compositions of any type, having a low phosphate content.
  • Condensed phosphates such as sodiumtriphosphate (STP) and tetrasodiumpyrophosphate, have already been known and applied as builder salts in the detergent industry for decades.
  • a detergent, cleaning and bleaching composition based on detergent-active substances and builders having a phosphor content of 1 % or less, which is characterized in that it contains from 1 to 5 percent by weight of an alkalimetal orthophosphate and from 3 to 20, preferably from 5 to 15 percent by weight, of an alkalimetal salt of nitrilotriacetic acid, the weight ratio of the alkalimetal salt of nitrilotriacetic acid to the alkalimetal orthophosphate being at least 2, shows such an incrustation behaviour.
  • the alkalimetal orthophosphate can be a mono-, di- or triorthophosphate, trisodium orthophosphate (TSOP) being preferred.
  • TSOP trisodium orthophosphate
  • the nitrilotriacetic acid alkalimetal salt is preferably the trisodium salt (NTA). Both salts can be used either as an anhydrous salt or as a salt containing water of crystallization.
  • NTA nitrilotriacetic salt
  • TSOP alkalimetal orthophosphate
  • polymeric electrolytes are known per se, typical examples being the alkalimetal- or ammonium-salts of homo- and co-polymers of acrylic acid or substituted acrylic acids, such as sodium polyacrylate, sodium copolymeth- acrylamide/acrylate and sodium polyalpha-hydroxyacrylate, salts of copolymers of maleic acid anhydride and ethylene, acrylic acid, vinylmethylether, diisobutylene, allylacetate or styrene, particularly the 1:1 copolymers, which optionally may be partly esterified.
  • Such copolymers preferably have a low molecular weight, for example from 1,000 to 50,000.
  • suitable polymeric electrolytes are the alkalimetal salts of polymaleic acid, polyitaconic acid, polyasparaginic acid, ether polycarboxylic acid such as sodium glycolate-malonate, as well as the compounds according to European patent applications 0009953 and 0009954, laid open to public inspection.
  • the polymeric electrolytes are used in an amount of from 0.1 to 5 percent by weight, preferably from 0.3 to 2 percent by weight.
  • the binary or ternary mixture according to the invention can be used in all types of detergent compositions.
  • the combination according to the invention can be used in detergent compositions containing an anionic, a nonionic, a cationic synthetic detergent compound or a soap or mixtures thereof, and which additionally comprise the normal additives and/or auxiliary materials for detergent compositions.
  • soap is to be understood an alkali-metal-, e.g. sodium- or potassium-salt, of a (C IO -C 24 )-carboxylic acid.
  • the detergent compositions essentially comprise one or more anionic, nonionic, amphoteric or zwitterionic, detergent-active compounds, or mixtures thereof, and generally builder salts.
  • the synthetic detergent-active compounds which can be used according to the invention are preferably anionic detergent-active compounds that are readily available and relatively cheap, as well as mixtures thereof. Normally these compounds are water-soluble alkalimetal salts of organic sulphonates or sulphuric acid esters having alkyl radicals with about 8 to 22 carbon atoms. Examples of such synthetic anionic detergent-active compounds are sodium- or potassium-sulphuric acid esters, particularly those which can be prepared by sulphating Ca-C1a-fatty alcohols that are obtained by reduction of fatty acids derived from tallow or coconut oil, or synthetic alcohols, which are obtained e.g.
  • alkane monosulphonates such as those which are obtained by reaction of C 8 - to C zo -alpha-olefins with sodium hydrogensulphite or by reaction of paraffins with S0 2 and C1 2 or O2 and subsequent hydrolysis with sodium- or potassium-hydroxide; as well as olefinsulphonates, which term is meant to denote the material which is obtained by reaction of olefins, particularly alpha-olefins, with S0 3 and subsequent hydrolisation and neutralisation.
  • Nonionic detergent-active compounds can also be used. Examples are the reaction products of alkylene oxide, particularly ethylene oxide and/or propylene oxide, with alkyl (C 6 -C, 2 )-phenols, C 8 - to C 2o -alkanols, fatty acid amides, in which in general from 5 to 30 ethylene units are present in the molecule, block polymerisates from propylene oxide and ethylene oxide, condensation products of ethylene oxide with reaction products from propylene oxide with ethylene diamine, etc.
  • Other nonionic detergent-active compounds comprise long-chain tertiary amine- or phosphine oxides and dialkyl sulphoxides.
  • Mixtures of detergent-active compounds e.g. mixed anionic and mixed anionic and nonionic compounds can be used in the detergent compositions, particularly to impart controlled low-sudsing properties. This is particularly advantageous for compositions that are to be used in suds-intolerant, automatic washing machines. Mixtures of amine oxides and ethoxylated, nonionic compounds can also be advantageous.
  • amphoteric and zwitterionic detergent-active compounds can also be used in the compositions of the invention; normally however this is not desirable in view of their relatively high cost. In case any amphoteric or zwitterionic compounds are used, this is generally done in small amounts in compositions based on the more commonly used anionic or nonionic detergent-active compounds.
  • the amount in which the synthetic detergent-active compound(s) is/are used generally ranges from about 5 to about 50 percent by weight, calculated on the compositions.
  • the detergent compositions can optionally contain further inorganic and/or organic builders, but no condensed phosphate builders.
  • Such builders are citrates, oxidised starch- and cellulose derivatives, particularly those with dicarboxyl radicals, sodiumalkenyl-(C l6 -C 20 )-succinates, sodium- sulpho-fatty acids, alkalimetalcarbonates, sodiumaluminosilicates, carboxymethyloxysuccinates, etc. These builders can be incorporated in minor amounts.
  • detergent compositions according to the invention can be present in the detergent compositions according to the invention, e.g. anti-deposition agents, hydrotropes, corrosion inhibitors, dyes, perfumes, fillers, fluorescers, enzymes, suds-boosters, suds-depressors, germicides, anti-tarnishing agents, fabric softeners, chlorine-releasing agents, oxygen-releasing bleaching agents, such as sodium-perborate or -percarbonate with or without peracid precursors, buffers and the like.
  • the remainder of the detergent compositions consists of water, e.g. ranging from 5 to 15% in the powdered detergent compositions.
  • compositions according to the invention can be used for domestic products and industrial products, as well as for machine dishwashing agents, household cleaners etc.
  • the detergent compositions according to the invention can have any customary form for such compositions, such as powder, pellets, flakes, bars, tablets, noodles, liquids, pastes and the like.
  • the detergent compositions are prepared and applied in the conventional way, e.g. in the ease of powdered detergent compositions they can be made by spray-drying aqueous slurries of the detergent ingredients or by dry-mixing processes, in which also the NTA can be added to the base powder in a secondary step.
  • the invention will be further illustrated by means of the following Examples, in which percentages are by weight, calculated on the finished detergent composition.
  • Varying amounts of NTA and TSOP were incorporated in this formulation, and the ash contents of the "Krefelder" cotton test fabrics washed with these formulations were determined and compared with the ash content of the test fabric washed with the control composition. A dosing of 6, 8 or 10 g/l of the formulation in water was applied. The greying degrees were also determined and compared; for this purpose an Elrephometer with Xenon-lamp at 620 nm was used. The following results were obtained:

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  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Detergent Compositions (AREA)

Claims (3)

1. Compositions détergentes de blanchiment et nettoyage à base de substances détergentes et d'adjuvants actifs, ayant une teneur en phosphore de 1% sinon moins, caractérisées en ce qu'elles contiennent 1 à 5% en poids d'un orthophosphate de métal alcalin et 3 à 20% en poids d'un sel de métal alcalin de l'acide nitrilotriacétique, le rapport en poids du sel de métal alcalin de l'acide nitrilotriacétique à l'orthophosphate de métal alcalin étant d'au moins 2.
2. Compositions suivant la revendication 1, caractérisées en ce qu'elles contiennent 5 à 15% en poids d'un sel de métal alcalin de l'acide nitrilotriacétique.
3. Compositions suivant les revendications 1 et 2, caractérisées en ce qu'elles contiennent en outre 0,1 à 5% en poids d'un électrolyte polymère.
EP82201090A 1981-09-15 1982-09-06 Composition détergente avec une basse teneur en phosphate Expired EP0075347B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82201090T ATE18254T1 (de) 1981-09-15 1982-09-06 Detergenszusammensetzung mit niedrigem phosphatgehalt.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19813136557 DE3136557A1 (de) 1981-09-15 1981-09-15 Waschmittel mit niedrigem phosphatgehalt
DE3136557 1981-09-15

Publications (3)

Publication Number Publication Date
EP0075347A2 EP0075347A2 (fr) 1983-03-30
EP0075347A3 EP0075347A3 (en) 1983-08-17
EP0075347B1 true EP0075347B1 (fr) 1986-02-26

Family

ID=6141693

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82201090A Expired EP0075347B1 (fr) 1981-09-15 1982-09-06 Composition détergente avec une basse teneur en phosphate

Country Status (8)

Country Link
EP (1) EP0075347B1 (fr)
JP (1) JPS5861195A (fr)
AT (1) ATE18254T1 (fr)
AU (1) AU557593B2 (fr)
BR (1) BR8205379A (fr)
CA (1) CA1168545A (fr)
DE (2) DE3136557A1 (fr)
ZA (1) ZA826734B (fr)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1344468A (en) * 1970-10-14 1974-01-23 Unilever Ltd Detergent composition
GB1530799A (en) * 1975-08-28 1978-11-01 Unilever Ltd Detergent compositions
DE2847826A1 (de) * 1977-11-10 1979-05-17 Unilever Nv Waschmittel

Also Published As

Publication number Publication date
DE3269406D1 (en) 1986-04-03
DE3136557A1 (de) 1983-03-31
EP0075347A3 (en) 1983-08-17
CA1168545A (fr) 1984-06-05
JPS5861195A (ja) 1983-04-12
AU557593B2 (en) 1986-12-24
BR8205379A (pt) 1983-08-23
ZA826734B (en) 1984-04-25
ATE18254T1 (de) 1986-03-15
EP0075347A2 (fr) 1983-03-30
AU8834582A (en) 1983-03-24
JPS6116795B2 (fr) 1986-05-02

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