[go: up one dir, main page]

WO2000042143A1 - Composition detergente - Google Patents

Composition detergente Download PDF

Info

Publication number
WO2000042143A1
WO2000042143A1 PCT/EP1999/009054 EP9909054W WO0042143A1 WO 2000042143 A1 WO2000042143 A1 WO 2000042143A1 EP 9909054 W EP9909054 W EP 9909054W WO 0042143 A1 WO0042143 A1 WO 0042143A1
Authority
WO
WIPO (PCT)
Prior art keywords
detergent
detergent composition
gum
composition according
active
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.)
Ceased
Application number
PCT/EP1999/009054
Other languages
English (en)
Inventor
Devadatta Shivaji Sankholkar
Pullimudaliar Sidheswaran
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.)
Hindustan Unilever Ltd
Unilever NV
Original Assignee
Hindustan Lever Ltd
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 Hindustan Lever Ltd, Unilever NV filed Critical Hindustan Lever Ltd
Priority to AU18597/00A priority Critical patent/AU1859700A/en
Publication of WO2000042143A1 publication Critical patent/WO2000042143A1/fr
Anticipated expiration legal-status Critical
Ceased 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
    • C11D3/20—Organic compounds containing oxygen
    • C11D3/22—Carbohydrates or derivatives thereof
    • C11D3/222—Natural or synthetic polysaccharides, e.g. cellulose, starch, gum, alginic acid or cyclodextrin
    • 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
    • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/02—Anionic compounds
    • 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
    • C11D3/12—Water-insoluble compounds
    • C11D3/14—Fillers; Abrasives ; Abrasive compositions; Suspending or absorbing agents not provided for in one single group of C11D3/12; Specific features concerning abrasives, e.g. granulometry or mixtures

Definitions

  • the invention relates to a detergent composition for washing fabric or hard surfaces . More particularly the invention relates to compositions for cleaning hard surfaces and for manual dishwashing .
  • foam volume and foam stability are often used by the consumer to gauge the cleaning efficiency. This is particularly the case when manual cleaning of fabrics and dishes occurs. It is therefore commercially desirable to formulate a detergent composition with improved foaming performance .
  • compositions typically comprise one or more surfactants and a plurality of abrasives dispersed in. Combinations of these together with electrolytes are generally used to form a structuring system as is well known in the art.
  • Gum as technically employed in industry, refers to plant or microbial polysaccharides or their derivatives that are dispersible in either cold or hot water to produce viscous mixtures or solutions.
  • gums are hydrophobic or hydrophilic high molecular weight molecules, usually with colloidal properties.
  • EP 124367 discloses the use of selected polymers and Xanthum gum to enhance the foam stability and viscosity of liquid detergents based on dialkyl sulphosuccinates .
  • Xanthum gum is disclosed as a thickening agent in hard surface cleaners in EP 839907 (Procter and Gamble) .
  • the present invention provides a detergent composition that has enhanced foam production, better foam stability and improved detergency.
  • a detergent composition suitable for cleaning laundry or hard surfaces comprising up to 50%wt. of the total detergent composition of detergent active component of gum Ghatti, a gum of the water swellable, branched hydrocolloids obtained from the species belonging to the genera Anogeissus .
  • According to another aspect of the invention provides a process for the preparation of the detergent composition as claimed in any of the preceding claims comprising the steps of neutralising the active detergent where possible and addition of gum ghatti as an aqueous dispersion to the active detergent.
  • compositions of the present invention contain as essential components gum ghatti and a detergent. These compositions provide improved cleaning of dishes and laundry in the presence of water, i.e. during use and enhance the foam volume and its stability.
  • compositions are of particularly useful for cleaning hard surfaces and in particular for manual dishwashing.
  • dishes as used herein means any utensils involved in food preparation or consumption which may be required to be washed to free them from food particles and other food residues, greases, proteins, starches, gums, dyes and burnt organic residues. Gums :
  • the present invention contains as an essential element gum Ghatti.
  • Gum Ghatti is derived from Anogeissus latifolia a large gregarious tree belonging to the family Combretaceae, commonly found in the dry deciduous forests of India and Sri Lanka. The tree yields a gum or a water swellable, branched hydrocolloid commonly known as Indian gum or gum ghatti , which occurs in straw coloured vermiform tears and dries without cracking.
  • the preferred level of gum ghatti in the total composition is from 0.05 to 10 wt% of the total composition, preferably 0.1 to 5 wt%, most preferably 0.1 to 3 wt%.
  • water-soluble polymers such as hydrophilically substituted polysaccharides or gums such as commonly available vegetable gums, gum arabic, karaya gum, gellan gum, almond gum, tragacanth gum or Xanthan gum may be incorporated.
  • water-soluble polymers or gums are present it is preferable if the total level of water-soluble polymer or gum does not exceed 5 wt% of the total composition and is preferably is equal to or below 3 wt%.
  • Detergent Actives :
  • composition according to the invention comprise a detergent actives chosen from anionic, nonionic, cationic, zwitterionic detergent actives or mixtures thereof.
  • the detergent active comprises an anionic surfactant.
  • Suitable anionic detergent active compounds are water soluble salts of organic sulphuric reaction products having in the molecular structure an alkyl radical containing from 8 to 22 carbon atoms, and a radical chosen from sulphonic acid or sulphur acid ester radicals and mixtures thereof.
  • Suitable anionic detergents are sodium and potassium alcohol sulphates, especially those obtained by sulphating the higher alcohols produced by reducing the glycerides of tallow or coconut oil; sodium and potassium alkyl benzene sulphonates such as those in which the alkyl group contains from 9 to 15 carbon atoms; sodium alkyl glyceryl ether sulphates, especially those ethers of the higher alcohols derived from tallow and coconut oil; sodium coconut oil fatty acid monoglyceride sulphates ; sodium and potassium salts of sulphuric acid esters of the reaction product of one mole of a higher fatty alcohol and from 1 to 6 moles of ethylene oxide ; sodium and potassium salts of alkyl phenol ethylene oxide ether sulphate with from 1 to 8 units of ethylene oxide molecule and in which the alkyl radicals contain from 4 to 14 carbon atoms; the reaction product of fatty acids esterified with isethionic acid and neutralised with sodium hydroxide where, for
  • the preferred water-soluble synthetic anionic detergent active compounds are the alkali metal (such as sodium and potassium) and alkaline earth metal (such as calcium and magnesium) salts of higher alkyl benzene sulphonates and mixtures with olefin sulphonates and higher alkyl sulphates, and the higher fatty acid monoglyceride sulphates.
  • the most preferred anionic detergent active compounds are higher alkyl aromatic sulphonates such as higher alkyl benzene sulphonates containing from 6 to 20 carbon atoms in the alkyl group in a straight or branched chain, particular examples of which are sodium salts of higher alkyl benzene sulphonates or of higher-alkyl toluene, xylene or phenol sulphonates, alkyl naphthalene sulphonates, ammonium diamyl naphthalene sulphonate, and sodium dinonyl naphthalene sulphonate.
  • Particularly preferred is Sodium Alkyl Benzene Sulphonate (LAS)
  • Suitable nonionic detergent active compounds can be broadly described as compounds produced by the condensation of alkylene oxide groups, which are hydrophilic in nature, with an organic hydrophobic compound which may be aliphatic or alkyl aromatic in nature.
  • the length of the hydrophilic or polyoxyalkylene radical which is condensed with any particular hydrophobic group can be readily adjusted to yield a water-soluble compound having the desired degree of balance between hydrophilic and hydrophobic elements.
  • Particular examples include the condensation product of aliphatic alcohols having from 8 to 22 carbon atoms in either straight or branched chain configuration with ethylene oxide, such as a coconut oil ethylene oxide condensate having from 2 to 15 moles of ethylene oxide per mole of coconut alcohol; condensates of alkylphenols whose alkyl group contains from 6 to 12 carbon atoms with 5 to 25 moles of ethylene oxide per mole of alkylphenol; condensates of the reaction product of ethylenediamine and propylene oxide with ethylene oxide, the condensate containing from 40 to 80% of polyoxyethylene radicals by weight and having a molecular weight of from 5,000 to 11,000; tertiary amine oxides of structure R 3 NO, where one group R is an alkyl group of 8 to 18 carbon atoms and the others are each methyl, ethyl or hydroxyethyl groups, for instance dimethyldodecylamine oxide; tertiary phosphine oxides of structure R
  • Suitable amphoteric detergent -active compounds that optionally can be employed are derivatives of aliphatic secondary and tertiary amines containing an alkyl group of 8 to 18 carbon atoms and an aliphatic radical substituted by an anionic water-solubilizing group, for instance sodium 3- dodecylamino-propionate, sodium 3-dodecylaminopropane sulphonate and sodium N-2-hydroxydodecyl-N-methyltaurate .
  • Suitable cationic detergent -active compounds are quaternary ammonium salts having an aliphatic radical of from 8 to 18 carbon atoms, for instance cetyltrimethyl ammonium bromide.
  • Suitable zwitterionic detergent-active compounds that optionally can be employed are derivatives of aliphatic quaternary ammonium, sulphonium and phosphonium compounds having an aliphatic radical of from 8 to 18 carbon atoms and an aliphatic radical substituted by an anionic water- solubilising group, for instance 3- (N-N-dimethyl-N- hexadecylammonium) propane-1-sulphonate betaine, 3- (dodecylmethyl sulphonium) propane- 1-sulphonate betaine and 3- (cetylmethylphosphonium) ethane sulphonate betaine.
  • detergent-active compounds are compounds commonly used as surface-active agents given in the well-known textbooks "Surface Active Agents", Volume I by Schwartz and Perry and “Surface Active Agents and Detergents", Volume II by Schwartz, Perry and Berch.
  • the total amount of detergent active compound to be employed in the detergent composition of the invention will generally be from 1.5 to 25%, preferably from 2 to 15% by weight.
  • a particulate abrasive phase is a useful ingredient of compositions according to the present invention.
  • the particulate phase comprises a particulate abrasive that is insoluble in water.
  • the abrasive may be soluble and present in such excess to any water present in the composition that the solubility of the abrasive in the aqueous phase is exceeded and consequently solid abrasive exists in the composition.
  • Suitable abrasives can be selected from, particulate zeolites, calcites, dolomites, feldspars, silicas, silicates, other carbonates, aluminas, bicarbonates, borates, sulphates and polymeric materials such as polyethylene .
  • Preferred abrasives for use in general purpose compositions have Mho hardness 2-6 although higher hardness abrasives can be employed for specialist applications.
  • Preferred average particle sizes for the abrasive fall in the range 0.5-400 microns, with values of around 10-200 microns being preferred.
  • Preferred levels of abrasive range from 4-95wt % on product, more preferably in the range 20-60wt%.
  • the physical form of the product will be influenced by the level of abrasive present.
  • the most preferred abrasives are calcium carbonate (as Calcite) , mixtures of calcium and magnesium carbonates (as dolomite), sodium hydrogen carbonate, potassium sulphate, zeolite, alumina, hydrated alumina, feldspars, talc and silica. Calcite, feldspar and dolomite and mixtures thereof are particularly preferred due to their low cost, suitable hardness and colour.
  • compositions of the invention may contain a detergency builder.
  • the detergency builders used in the formulation are preferably inorganic and suitable builders include, for example, alkali metal aluminosilicates (zeolites) , sodium carbonate, sodium tripolyphosphate (STPP) , tetrasodiu pyrophosphate (TSPP) , and combinations of these.
  • suitable builders include, for example, alkali metal aluminosilicates (zeolites) , sodium carbonate, sodium tripolyphosphate (STPP) , tetrasodiu pyrophosphate (TSPP) , and combinations of these.
  • phosphorus-containing inorganic builders when present, include the water-soluble salts, especially alkali metal pyrophosphates, orthophosphates and polyphosphates .
  • specific examples of inorganic phosphate builders include sodium and potassium tripolyphosphates, pyrophosphates and hexametaphosphates .
  • non-phosphorus-containing inorganic builders when present, include water-soluble alkali metal carbonates, bicarbonates, sesquicarbonates, borates, silicates, including layered silicates such as SKS-6 ex. Hoechst, metasilicates, and crystalline and amorphous aluminosilicates. Specific examples include sodium carbonate (with or without calcite seeds), potassium carbonate, sodium and potassium bicarbonates, silicates including layered silicates and zeolites.
  • the preferred sodium aluminosilicates of this type are the well-known commercially available zeolites 4A and X, maximum aluminium zeolite P (zeolite MAP) and mixtures thereof.
  • the builder material is, sodium tripolyphosphate (STPP)
  • Builders are suitably used in an amount ranging from 0.1 to 50% by wt, preferably from 0.5 to 30% by wt, most preferably from 0.5 to 10 wt%.
  • Fillers suitable for use in the formulation include kaolin, calcium carbonate (calcite) , talc, soapstone, china clay and the like, used singly or in combination, suitably in an amount ranging from 10 to 75% by weight, preferably from 30 to 70 wt%.
  • Solvents suitable in the compositions of the present invention are Alkanolamines, which can be mono- or poly- functional as regards the amine and hydroxy moieties.
  • Preferred alkanolamines are generally of the formulation H 2 N- R ⁇ -OH where Ri is a linear or branched alkyl chain having 2-6 carbons. Particularly preferred alkanolamine especially to clean tough or aged soil is 2 -amino-2 -methyl -1-propanol (AMP) or monoethanol amine.
  • AMP 2 -amino-2 -methyl -1-propanol
  • Other suitable solvents include saturated and unsaturated, linear or branched hydrocarbons, and/or materials of the general formula:
  • R x and R 2 are independently Cl-7 alkyl or H, but not both hydrogen, m and n are independently 0-5.
  • Suitable glycol ethers include di-ethylene glycol mono n-butyl ether, mono-ethylene glycol mono n-butyl ether, propylene glycol n- butyl ether and mixtures thereof. Typical levels of solvent range from 1-15% w .
  • Electrolyte base
  • Suitable electrolyte bases include soluble carbonates and bicarbonates, although use of hydroxides and other alkaline salts is not excluded. Alkali metal carbonates are particularly preferred, with potassium carbonate being the most preferred. Typical levels of electrolytes range from 0.5-5%wt, with l-2.5%wt being particularly preferred. The level of the electrolyte should be such that in use the pH of the composition is raised above the pKa of the alkanolamine, and preferably to a pH at least one unit above the pKa of the alkanolamine.
  • compositions of the invention be in the form of solid, liquids, pastes or gels.
  • Other suitable rheological control agents can be present especially when the compositions contain significant amounts of water or low viscosity surfactants.
  • ingredients such as perfumes, colouring agents, fluoresces, enzymes and bleaches can also be used in the formulation.
  • Detergent compositions of the present may formulated in different forms such as powders, granules, bars, liquids, pastes and gels. However it is preferable if the product is in solid form that is a powder, granule, bar or paste. It is most preferable if the composition is a bar.
  • Table 1 The formulations disclosed in Table 1 were prepared using conventional bar processing technology. The ingredients were mixed in a sigma mixer, extruded into bars and then cut into billets and stamped. In the experimental examples 2 to 5 the gum ghatti dispersed in water was incorporated. Table 1
  • the mobile soil that has been polymerised by heating at high temperature is known as tough soil.
  • the soil is smeared uniformly on a stainless steel plate and heated it forms a polymerised film on the plate.
  • 0. 2g of the product as defined in the different Examples mentioned in Table 1 were uniformly rubbed on the soiled plate and then rinsed with water. The amount of soil removed was evaluated gravametrically. The experiment was conducted with replicates and analysed statistically.
  • Detergent bars were prepared according to Example 1, Example 3 and in Example 6 the 0.5% of gum arabic was incorporated in place of gum ghatti . These samples were tested by the procedure described above for lather measurement, tough soil cleaning and the cleaning of unpolymerised soil. The data presented in Table 3 shows that gum ghatti was significantly superior to gum Arabic in lather volume and tough soil cleaning. In addition, the processability of the bar with gum ghatti was significantly superior to grum Arabic . Table 3

Landscapes

  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Wood Science & Technology (AREA)
  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Molecular Biology (AREA)
  • Emergency Medicine (AREA)
  • Inorganic Chemistry (AREA)
  • Detergent Compositions (AREA)
  • Cosmetics (AREA)

Abstract

L'invention concerne une composition détergente pour le nettoyage du linge ou de surfaces dures, comprenant jusqu'à 50 % en poids d'agent actif détergent et de ghatti, gomme provenant de matières hydrocolloïdales ramifiées et gonflant au contact avec l'eau, issues d'espèces appartenant au genre Anogeissus.
PCT/EP1999/009054 1999-01-15 1999-11-24 Composition detergente Ceased WO2000042143A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU18597/00A AU1859700A (en) 1999-01-15 1999-11-24 Detergent composition

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB9900957.3A GB9900957D0 (en) 1999-01-15 1999-01-15 Improved detergent composition for washing fabric and hard surfaces
GB9900957.3 1999-01-15

Publications (1)

Publication Number Publication Date
WO2000042143A1 true WO2000042143A1 (fr) 2000-07-20

Family

ID=10845995

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1999/009054 Ceased WO2000042143A1 (fr) 1999-01-15 1999-11-24 Composition detergente

Country Status (4)

Country Link
AR (1) AR021520A1 (fr)
AU (1) AU1859700A (fr)
GB (1) GB9900957D0 (fr)
WO (1) WO2000042143A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004046292A1 (fr) * 2002-11-15 2004-06-03 Unilever N.V. Detergent ayant une composition amelioree
WO2015078679A1 (fr) * 2013-11-28 2015-06-04 Unilever N.V. Composition de nettoyage de surfaces dures

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0124367A2 (fr) * 1983-04-29 1984-11-07 Unilever N.V. Compositions détergentes
US4581042A (en) * 1984-06-22 1986-04-08 Pro-Strength, Inc. Composition for removing hard-water build-up
JPH0848999A (ja) * 1994-08-03 1996-02-20 Nisshin Oil Mills Ltd:The 洗浄剤組成物
DE19526033A1 (de) * 1995-07-17 1997-01-23 Henkel Kgaa Wäßrige Handgeschirrspülmittel
US5942478A (en) * 1995-09-19 1999-08-24 Lopes; John A. Microbicidal and sanitizing soap compositions

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0124367A2 (fr) * 1983-04-29 1984-11-07 Unilever N.V. Compositions détergentes
US4581042A (en) * 1984-06-22 1986-04-08 Pro-Strength, Inc. Composition for removing hard-water build-up
JPH0848999A (ja) * 1994-08-03 1996-02-20 Nisshin Oil Mills Ltd:The 洗浄剤組成物
DE19526033A1 (de) * 1995-07-17 1997-01-23 Henkel Kgaa Wäßrige Handgeschirrspülmittel
US5942478A (en) * 1995-09-19 1999-08-24 Lopes; John A. Microbicidal and sanitizing soap compositions

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
DATABASE WPI Section Ch Week 199617, Derwent World Patents Index; Class D25, AN 1996-167424, XP002132873 *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004046292A1 (fr) * 2002-11-15 2004-06-03 Unilever N.V. Detergent ayant une composition amelioree
RU2323963C2 (ru) * 2002-11-15 2008-05-10 Юнилевер Н.В. Композиция очищающего средства
CN100393863C (zh) * 2002-11-15 2008-06-11 荷兰联合利华有限公司 改进的洗涤剂组合物
WO2015078679A1 (fr) * 2013-11-28 2015-06-04 Unilever N.V. Composition de nettoyage de surfaces dures

Also Published As

Publication number Publication date
AR021520A1 (es) 2002-07-24
AU1859700A (en) 2000-08-01
GB9900957D0 (en) 1999-03-10

Similar Documents

Publication Publication Date Title
US4457856A (en) Liquid detergent composition contains abrasive particles, anionic and nonionic surfactants
DK169558B1 (da) Detergentsammensætning
EP0120533B1 (fr) Composition détergente aqueuse alcaline liquide
EP0110731B1 (fr) Solidification non-évaporative de pâtes de détergents
JPS5940200B2 (ja) 繊維柔軟化性を有する洗剤組成物
CA1178160A (fr) Produit liquide pour le nettoyage de surfaces dures
EP1625195B1 (fr) Detergent ayant une composition amelioree
CA1286188C (fr) Composition detersive liquide
AU609482B2 (en) Hard surface cleaning composition
JPH0559394A (ja) 洗剤組成物
PL204555B1 (pl) Detergentowa kompozycja do prania oraz sposób prania tkanin tekstylnych
EP1198450B1 (fr) Gb0002691coxyles
JPH0813984B2 (ja) 洗剤組成物
AU6048500A (en) Liquid laundry detergent composition containing ethoxylated quaternary surfactant
US4806273A (en) Breakage resistant higher fatty alcohol sulfate detergent laundry bars
WO1995027037A1 (fr) Detergent en pains pour lessive contenant de l'argile adoucissant le tissu
US3530071A (en) Scouring cleanser containing chlorinated trisodium phosphate stabilized against loss of bleaching effectiveness with borax
US5540866A (en) Dishwashing power including alkyl benzene sulphonates and magnesium or calcium
US4721581A (en) Alkyl ethoxylate sulfate detergent laundry bars and processes for manufacture thereof
WO2000020545A1 (fr) Arre de nettoyage pour surfaces dures
WO2000042143A1 (fr) Composition detergente
WO2000041468A2 (fr) Composition detergente
WO2000034423A1 (fr) Compositions detergentes
JPS6021640B2 (ja) 液体洗剤組成物
WO2001042413A1 (fr) Composition detergente en barre et son procede de fabrication

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AE AL AM AT AU AZ BA BB BG BR BY CA CH CN CR CU CZ DE DK DM EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MD MG MK MN MW MX NO NZ PL PT RO RU SD SE SG SI SK SL TJ TM TR TT TZ UA UG US UZ VN YU ZA ZW

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): GH GM KE LS MW SD SL SZ TZ UG ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE BF BJ CF CG CI CM GA GN GW ML MR NE SN TD TG

DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
121 Ep: the epo has been informed by wipo that ep was designated in this application
REG Reference to national code

Ref country code: DE

Ref legal event code: 8642

122 Ep: pct application non-entry in european phase