EP0145736A1 - Composition de lavage de vaisselle en machine - Google Patents

Composition de lavage de vaisselle en machine

Info

Publication number
EP0145736A1
EP0145736A1 EP19840902094 EP84902094A EP0145736A1 EP 0145736 A1 EP0145736 A1 EP 0145736A1 EP 19840902094 EP19840902094 EP 19840902094 EP 84902094 A EP84902094 A EP 84902094A EP 0145736 A1 EP0145736 A1 EP 0145736A1
Authority
EP
European Patent Office
Prior art keywords
alkali metal
composition
silicate
weight
enzyme
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.)
Withdrawn
Application number
EP19840902094
Other languages
German (de)
English (en)
Inventor
Krister Holmberg
Olle SÖRENSSON
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.)
Nouryon Pulp and Performance Chemicals AB
Original Assignee
Eka AB
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 Eka AB filed Critical Eka AB
Publication of EP0145736A1 publication Critical patent/EP0145736A1/fr
Withdrawn legal-status Critical Current

Links

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
    • C11D3/38—Products with no well-defined composition, e.g. natural products
    • C11D3/386—Preparations containing enzymes, e.g. protease or amylase
    • C11D3/38609—Protease or amylase in solid compositions only

Definitions

  • the present invention relates to a machine dish ⁇ washing composition, more particularly to an enzyme- containing machine dishwashing composition which in ⁇ cludes, besides conventional additives, alkali metal silicate, alkali metal phosphate, surfactant and, prefer ⁇ ably, bleaching agent.
  • Known machine dishwashing detergents typically contain alkali metal silicate, alkali metal phosphate, surfactant, blea ' ching agent and conventional additives.
  • the alkali metal silicate normally is a sodium silicate having a molar ratio SiO_:Na O of between 3.50 and 0.75.
  • sodium eta- silicate which implies that the said ratio is about 1.
  • the sodium metasilicate may be either practically anhy- drous or be present as a hydrate.
  • the silicate has for its object on the one hand to act as an inhibitor against attack on glass, gla ⁇ e and metals and, on the other hand, to supply the need for alkali in the dish ⁇ water.
  • the high pH-value of the dishwashing solution obtained from the silicate contributes efficiently to the decomposition of hydrolysable food residues, such as fat, protein and starch.
  • the alkali metal phosphate usually consists of tri- poJyphosphate whose main function is to act as a complex- ing agent for the hardness generating substance of the ' water, primarily calcium and magnesium ions.
  • the tripoly- phosphate furthermore has a not inconsiderable dirt dissolving and dispersing effect.
  • the alkali metal silicate and the alkali metal phosphate are the two main components of conventional machine dishwashing compositions. and usually each amount to 30-60% by weight of the total formulation.
  • the surfactant usually is a nonionic surfactant, preferably a block polymer of ethylene and propylene oxide. Its task is to contribute to wetting and emulsifi- cation, simultaneously as it shall have an antifoaming effect on, for example, proteins.
  • the bleaching agent normally consists of organic chlorine compounds functioning as an oxidative bleaching agent which has the task of attacking deposits of, inter alia, coffee, tea and fruit juices. When the compound comes into contact with water, it gives off chlorine which acts not only as a bleaching agent but also as a disinfectant. In most cases, chlorinated isocyanuric acid or salts thereof are used as the organic chlorine compound, and chlorinated sodium isocyanurates have, primarily for economical reasons, been most widely uti ⁇ lised.
  • machine dishwashing detergents frequently also contain varying amounts of conventional additives, such as alkali metal carbonates and bicarbonates, alkali metal sulphate, aluminium silicate, sodium borate, dyes, perfume etc.
  • starch-containing dishwashing residues for example from spaghetti and potatoes
  • starch-containing dishwashing residues for example from spaghetti and potatoes
  • starch decomposing enzymes so-called amylases
  • amylase acts in that it hydrolyses ⁇ -l,4-glucoside bonds in amylose and a ylopectin, whereby the starch is decom ⁇ posed into soluble dextrins and oligosaccharides.
  • amylases are readily decomposed in alkaline environment. Although more alkali resistant enzymes have been developed in recent years, one has still not succeeded in producing amylases functioning satisfactorily together with products of high alkali content, such as silicates. Because the removal of fat and protein requires a high pH in the dishwashing solution, this means that one must compromise between enzyme activity and alkali content. In actual practice, it has been found that the upper effective limit of the etasilicate content in machine dishwashing detergents is about 20% by weight if a fairly intact enzyme activity is desired. This amount of metasilicate is about half the normal amount in machine dishwashing detergents, and this considerable decrease of the alkali content entails a marked deterioration of the dishwashing effect as regards fat and protein.
  • the alkali metal silicate content of the composition is present in the form of two-layer granules whose core consists of alkali metal silicate, preferably sodium metasilicate (anhydrous or hydrate) and whose outer shell consists of alkali metal phosphate, preferable sodium tripolyphosphate.
  • sa ' id granule comprising a core of sodium silicate and ⁇ " she1-1 of sodium tripolyphosphate.
  • This prior art technique proceeds from granules of silicate, usually sodium metasilicate (anhydrous or hydrate) , said granules suitably having a particle size of 0.05-1.5 mm, preferably 0.2-1.2 mm, and over these granules a shell of pulverulent and partially hydrated tripolyphosphate is applied.
  • the particle size of the finished two-layer granules generally is 0.25-2.5 mm.
  • these two-layer granules contain both silicate and phosphate, but the outer surface consists of phosphate only and thus is not markedly alkaline.
  • the present invention therefore prescribes either that the bleaching agent be omitted entirely or, if it is included in the composition, that it consist of a hydrogen peroxide- based bleaching agent.
  • Preferred hydrogen peroxide-based bleaching agents are perborates and percarbonates, such as sodium perborate and sodium percarbonate.
  • composition according to the present invention generally lie within the following ranges: two-layer granules of alkali metal silicate/alkali metal phosphate 40-99% by weight surfactant 1-4% by weight oxidative hydrogen peroxide bleaching agent 0-15% by weight enzyme * 0.5-5% by weight additive up to 100% by weight
  • the weight ratio silicate/phosphate in the two-layer granule may vary within wide limits.
  • a weight ratio pre ⁇ ferred in actual practice is from 80:20 to 40:60, calcu- lated upon anhydrous components. It is also possible, and sometimes advantageous, not to include the entire phosphate amount of the composition in the two-layer granule, but to,.
  • OMPI add part of it as a separate component, on condition that each silicate particle is covered by a phosphate layer of such a thickness that the surface will no longer be highly alkaline. Furthermore, it is not necessary that the entire silicate content of the composition is present in the form of two-layer granules, and part of the silicate may be present in free form, without the protective phosphate layer obtained in the granules. However, in order to avoid a detrimental effect on the enzyme, the amount of silicate which-thus is present in free form, must not be too large, and more particularly the present invention prescribes that at least half of the silicate be present in the form of two-layer granules.
  • composition preferably contains 1-3% by weight of enzyme which normally is present in the form of a granulated product.
  • 1 1 * consisting of 40 parts of tripolyphosphate and 55-60 parts of metasilicate 5 aq ** sodium sulphate is an inert filler *** Termamyl 60S from Novo Industri AS.
  • the dishwashing detergent C was a machine dishwashing detergent in accordance with the present invention, while the dishwashing detergents A and B were reference compo ⁇ sitions.
  • dishwashing tests were conducted at the ambient temperature and ambient air humidity.
  • the soil load in these tests was a mixture of potato-flour, oatmeal, spinach, eggs, tomato juice, milk, tea, fat and minced meat.
  • the dishwashing effect was con ⁇ sidered on one hand as the total effect and, on the other hand, as the effect on starch. The total effect was judged directly visually, while the remaining starch was judged after the articles had been treated with iodine solution.
  • the result is shown by the following Table. The scale goes from 0 to 10, 0 being completely clean and 10 very soiled.
  • the dosage of the dishwashing deter ⁇ gent was 3 g/1, and the dish-water had a hardness of 3 dH.
  • formulation A has a rather poor effect on starch but is satisfactory in other respects.

Landscapes

  • 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)
  • Detergent Compositions (AREA)

Abstract

Composition de détergent de lavage de vaisselle en machine contenant une enzyme qui, en plus des additifs conventionnels, comme les colorants, les parfums et autres, contient du silicate de métal alcalin, du phosphate de métal alcalin, un agent tensio-actif et, facultativement, un agent de blanchiment à base de péroxyde d'hydrogène. Cette composition est caractérisée par le fait qu'elle contient une enzyme, de préférence une amylase, et qu'au moins la moitié du silicate de métal alcalin et au moins une partie du phosphate de métal alcalin sont présentes sous la forme de granules à deux couches possédant un noyau de silicate de métal alcalin entouré par une enveloppe extérieure de phosphate de métal alcalin. Le rapport de poids entre le silicate de métal alcalin et le phosphate de métal alcalin dans les granules à deux couches se situe de préférence entre 80:20 et 40:60 et la composition contient, le calcul étant effectué sur la base de son poids total, de préférence entre 40 et 99% en poids de granules à deux couches, entre 1 et 4% en poids d'agent tensio-actif et entre 0 et 15% en poids d'agent de blanchiment, le reste étant constitué par les additifs.
EP19840902094 1983-05-03 1984-04-27 Composition de lavage de vaisselle en machine Withdrawn EP0145736A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8302507 1983-05-03
SE8302507A SE450835B (sv) 1983-05-03 1983-05-03 Maskindiskmedelskomposition

Publications (1)

Publication Number Publication Date
EP0145736A1 true EP0145736A1 (fr) 1985-06-26

Family

ID=20351050

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19840902094 Withdrawn EP0145736A1 (fr) 1983-05-03 1984-04-27 Composition de lavage de vaisselle en machine

Country Status (3)

Country Link
EP (1) EP0145736A1 (fr)
SE (1) SE450835B (fr)
WO (1) WO1984004324A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8321923D0 (en) * 1983-08-15 1983-09-14 Unilever Plc Machine-dishwashing compositions
DK263584D0 (da) * 1984-05-29 1984-05-29 Novo Industri As Enzymholdige granulater anvendt som detergentadditiver
DE3428834A1 (de) * 1984-08-04 1986-02-13 Henkel KGaA, 4000 Düsseldorf Geschirreinigungsmittel
DE3428848A1 (de) * 1984-08-04 1986-02-13 Henkel KGaA, 4000 Düsseldorf Geschirreinigungsmittel
DE3428833A1 (de) * 1984-08-04 1986-02-13 Henkel KGaA, 4000 Düsseldorf Geschirreinigungsmittel
US4863626A (en) * 1985-08-21 1989-09-05 The Clorox Company Encapsulated enzyme in dry bleach composition

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1296839A (fr) * 1969-05-29 1972-11-22
SE424739B (sv) * 1977-05-26 1982-08-09 Elektrokemiska Ab Granuler ravara for maskindiskmedel-, avfettningsmedel-, och rengorings-medelskomposition och forfarande for dess framstellning

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO8404324A1 *

Also Published As

Publication number Publication date
SE450835B (sv) 1987-08-03
SE8302507D0 (sv) 1983-05-03
WO1984004324A1 (fr) 1984-11-08
SE8302507L (sv) 1984-11-04

Similar Documents

Publication Publication Date Title
US4568476A (en) Enzymatic machine-dishwashing compositions
US5173207A (en) Powered automatic dishwashing composition containing enzymes
EP2247705B1 (fr) Détergent pour lave-vaisselle sans phosphate automatique offrant de meilleures performances de suppression des taches et des voiles
JP3984287B2 (ja) 食器洗浄のための洗剤組成物および方法
JPH0559159B2 (fr)
JPH0354720B2 (fr)
JPH06100889A (ja) 皿洗い機用組成物
CA1334389C (fr) Composition anti-taches pour lave-vaisselle
US9133424B2 (en) Stabilization and activation of protease for use at high temperature
US5240632A (en) Machine dishwasher water spot control composition
NZ242843A (en) Nonaqueous liquid dishwashing composition comprising protease & amylase enzymes
JPH02504649A (ja) 皿を洗いすすぐための酵素組成物
US5468411A (en) Powdered automatic dishwashing composition containing enzymes
CA2023529A1 (fr) Melange detergent pour lave-vaisselle
AU654184B2 (en) Improved phosphate-containing powder automatic dishwashing composition with enzymes
US5545344A (en) Nonaqueous liquid, improved automatic dishwashing composition containing enzymes
US5527484A (en) Phosphate containing powdered automatic dishwashing composition with enzymes
EP0145736A1 (fr) Composition de lavage de vaisselle en machine
AU654009B2 (en) Phosphate-containing powder automatic dishwashing composition with enzymes
US5693602A (en) Spray dried powered automatic dishwashing composition containing enzymes
US5474699A (en) Phosphate containing powered automatic dishwashing composition with enzymes
JPS6060199A (ja) 皿洗い機用の酵素含有洗剤組成物
JPS6060198A (ja) 皿洗い機用洗剤組成物
CA2069854A1 (fr) Composition detergente granulaire avec enzymes, pour lave-vaisselle automatique

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): AT BE CH DE FR GB LI LU NL SE

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19850409

RIN1 Information on inventor provided before grant (corrected)

Inventor name: HOLMBERG, KRISTER

Inventor name: SOERENSSON, OLLE