EP1280877A1 - Silikon-entferner - Google Patents
Silikon-entfernerInfo
- Publication number
- EP1280877A1 EP1280877A1 EP01940382A EP01940382A EP1280877A1 EP 1280877 A1 EP1280877 A1 EP 1280877A1 EP 01940382 A EP01940382 A EP 01940382A EP 01940382 A EP01940382 A EP 01940382A EP 1280877 A1 EP1280877 A1 EP 1280877A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- use according
- alkyl
- components
- ethoxylation
- weight
- 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.)
- Granted
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
- C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
- C11D1/66—Non-ionic compounds
- C11D1/83—Mixtures of non-ionic with 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
- C11D3/16—Organic compounds
- C11D3/36—Organic compounds containing phosphorus
- C11D3/361—Phosphonates, phosphinates or phosphonites
-
- 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
- C11D1/66—Non-ionic compounds
- C11D1/72—Ethers of polyoxyalkylene glycols
-
- 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
- C11D1/66—Non-ionic compounds
- C11D1/75—Amino oxides
-
- 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
- C11D2111/00—Cleaning compositions characterised by the objects to be cleaned; Cleaning compositions characterised by non-standard cleaning or washing processes
- C11D2111/10—Objects to be cleaned
- C11D2111/14—Hard surfaces
- C11D2111/20—Industrial or commercial equipment, e.g. reactors, tubes or engines
Definitions
- the present invention relates to the use of a surfactant or the use of cleaning solutions, which can be obtained by diluting the surfactant, for removing silicone-containing residues from surfaces.
- silicones are used in industry, in particular in the cosmetic, pharmaceutical, biotechnological and food processing industries. These silicones are used, for example, as defoamers, lubricants and lubricants or as skin protection and care components in lotions, creams, sunscreens, make-up and as hair protection in hair shampoo.
- silicones are the use as additives in lacquers and printing inks to improve the wettability on plastics, as an additive to household cleaners and care products also for better wetting or as defoamers in the paper industry.
- Silicones are widely used in industry. A wide variety of silicones are used depending on the area of application. These can be divided into the following groups:
- Linear polysiloxanes Linear polysiloxanes, branched polysiloxanes, cyclic polysiloxanes, cross-linked polymers.
- silicones can be low to highly viscous or solid. Since silicones are contained in a variety of products such as sunscreens, creams, make-up, pharmaceuticals, the systems such as mixers and homogenizers, fermenters, storage tanks, lines and filling machines must be cleaned after production for hygienic reasons. Especially when changing products on a production line, all previous product components must be thoroughly removed by chemical cleaning in order to avoid contamination of the subsequent production batch with remnants of the pre-production.
- Highly alkaline and / or acidic cleaners are usually used for automatic chemical cleaning using CIP systems (cleaning in place) or in pumping or immersion processes. In some cases, cleaning is carried out manually by wiping or with solvents such as benzene, toluene and aliphatic, also chlorinated, hydrocarbons.
- silicones can be removed from the systems with 1% sodium hydroxide solution. Most silicones can only be removed by using 10% or higher sodium hydroxide solution. There are also silicones that cannot be removed with these highly alkaline solutions. In these cases, the silicone must be removed from the systems by manual wiping with a rag or by using solvents.
- the object of the present invention was to search for selected agents, the use of which makes it possible to remove residues containing silicone, without the use of pure solvents or the manual wiping of the soiled surfaces.
- the task was surprisingly achieved by using selected surfactants.
- the present invention thus relates to the use of a surfactant which comprises one or more hydrophilic components selected from a) the group of nonionic surfactants of the general formula (I),
- R ⁇ is a straight-chain or branched alkyl or alkenyl radical having 8 to 22 C atoms and the average degree of ethoxylation n is between 14 and 40, and / or the general formula (II),
- R 6 is a straight-chain or branched alkyl or alkenyl radical having 8 to 22 carbon atoms and the average degree of ethoxylation r is 1 to 7, for removing silicone-containing residues from surfaces.
- Alcohols whose ethoxylation provides the nonionic surfactants of the formula I include, in particular, those alcohols with 8 to 22 carbon atoms, of natural or synthetic origin, which are also commercially available on an industrial scale, in particular native alcohols from the hydrogenation of carboxylic acids or carboxylic acid derivatives of vegetable or animal origin (so-called fatty alcohols).
- the alcohols obtainable from technical alcohol syntheses such as oxo alcohols and Ziegleral alcohols, can also be used.
- the alcohols are in particular primary alcohols with preferably 8 to 18 carbon atoms, in which the alcohol radical may be methyl-branched linearly or preferably in the 2-position or may contain linear and methyl-branched radicals in the mixture, as are usually present in oxo alcohol radicals.
- the alcohol radical is even narrower in its chain distribution, with ethoxylated tallow alcohol being very particularly preferably used as the nonionic surfactant of the formula I.
- the degrees of ethoxylation given represent statistical averages, which can be an integer or a fraction for a specific product.
- Preferred alcohol ethoxylates have a narrow homolog distribution (narrow range ethoxylates, NRE).
- the nonionic surfactants of the formula II are also referred to as ethoxylated fatty amines.
- the sum of x and y is particularly preferably between 6 and 18 and very particularly preferably between 8 and 14. It is further preferred that the radical R 2 is a straight-chain or branched alkyl or alkenyl radical with 8 to 18 carbon atoms.
- Typical examples are addition products of an average of 5 to 25, preferably 6 to 18 and very particularly preferably 8 to 14 moles of ethylene oxide onto caprylamine, caprylylamine, capronylamine, laurylamine, myristylamine, cetylamine, stearylamine, isostearylamine, oleylamine, elaidylamine, petroselinylamine, behenylamine and Erucylamine and mixtures thereof.
- the ethoxylates can have a conventionally broad or a narrow homolog distribution.
- the alkyl sulfates of group b) are the alkali and, in particular, the sodium salts of the sulfuric acid half-esters of the Cs-C-i ⁇ fatty alcohols. for example from coconut fatty alcohol, tallow fatty alcohol, lauryl, myristyl, cetyl or stearyl alcohol or the C 1 -C 20 oxo alcohols and those half esters of secondary alcohols of this chain length are preferred. Also preferred are alkyl sulfates of the chain length mentioned which contain a synthetic, straight-chain alkyl radical prepared on a petrochemical basis and which have a degradation behavior analogous to that of the adequate compounds based on oleochemical raw materials.
- C * ⁇ 2 -Ci 6 alkyl sulfates and Ci2-C * ⁇ 5 alkyl sulfates and C ⁇ -C 15 alkyl sulfates are preferred.
- 2,3-alkyl sulfates which are produced, for example, according to US Pat. Nos. 3,234,258 or 5,075,041 and can be obtained as commercial products from Shell Oil Company under the name DAN ® are suitable alkyl sulfates.
- R 4 and R 5 independently of one another for alkyl and / or alkenyl radicals having 8 to 22 carbon atoms, preferably 8 to 18 carbon atoms
- anionic surfactants which are usually obtained by reacting optionally ethoxylated alcohols with phosphorus pentoxide.
- Typical examples are industrial mixtures of mono- and dialkyl phosphates based on fatty alcohols with 8 to 22, preferably 10 to 18 and in particular 12 to 18 carbon atoms. Instead of the alcohols, their adducts with the corresponding number of moles of ethylene oxide can also be used.
- the alkyl phosphates are preferably in the form of their sodium salts.
- the phosphoric acid esters are surfactant substances which are preferably derived from long-chain aliphatic or araliphatic alcohols.
- the salts of the phosphoric acid partial esters and here in particular those of alkoxylated alkylphenols have proven to be useful.
- the sodium and potassium salts are preferably used as alkali salts, of which in turn the potassium salts are particularly suitable. are preferred.
- Partially active phosphoric acid esters, such as are preferably used according to the invention, are commercially available.
- An example of an active ingredient of this kind which is particularly useful according to the invention is the product Triton® H 66 (Röhm & Haas).
- the alkyiphenol ethoxylates of group c) preferably have 8 to 15 carbon atoms in the alkyl group and, in a further preferred embodiment, an average degree of ethoxylation of 8 to 12.
- Preferred alkylamine oxides of group d) are trialkylamine oxides with an alkyl group containing 8 to 22 carbon atoms and two alkyl groups with a smaller number of carbon atoms in the alkyl chain, the two shorter alkyl groups being able to be identical or different, it being very particularly preferred that as alkylamine oxide, tallow fat bis (2-hydroxyethyl) amine oxide, oleyl bis (2-hydroxyethyl) amine oxide, coconut bis (2-hydroxyethyl) amine oxide, tetradecyldimethylamine oxide and / or alkyldimethylamine amine oxide which has 12 to 18 carbon atoms in the alkyl chain is used.
- Alcohols whose ethoxylation provides the nonionic surfactants of the formula III are, in particular, those alcohols with 8 to 22 carbon atoms, preferably with 8 to 18 carbon atoms, of natural or synthetic origin, in particular native alcohols from the hydrogenation, which are also commercially available on an industrial scale of carboxylic acids or carboxylic acid derivatives (so-called fatty alcohols).
- the alcohols obtainable from technical alcohol syntheses such as oxo alcohols and Ziegleral alcohols, can also be used.
- the alcohols are, in particular, primary alcohols with preferably 8 to 18 carbon atoms, in which the alcohol radical may be methyl-branched linearly or preferably in the 2-position or may contain linear and methyl-branched radicals in the mixture, as are usually present in oxo alcohol radicals.
- the alcohol residue is even narrower in its chain distribution.
- the average degree of ethoxylation for the ethoxylated nonionic surfactants of the formula III is between 1 and 7, preferably between 3 and 7, and very particularly preferably about 5.
- the degrees of ethoxylation given represent statistical averages, which can be an integer or a fraction for a specific product.
- Preferred alcohol ethoxylates have a narrow homolog distribution (narrow range ethoxylates, NRE).
- the sum of components a) and b) in the composition to be used according to the invention makes up 0.1 to 33% by weight, particularly preferably 1 to 20% by weight, in particular 2 up to 15% by weight, and the sum of components c), d) and e) in total 0.1 to 67% by weight, particularly preferably 1 to 40% by weight, in particular 2 to 30% by weight, from, where the proportion of individual components can also be 0 and the remainder to 100% by weight is optionally water and / or further auxiliaries and / or active ingredients.
- the weight ratio of (a + b): (c + d + e) in the mixture is between 4: 1 and 1: 8, particularly preferably between 2: 1 and 1: 4 lies.
- the use according to the invention is preferably carried out by separately adding the agents to be used according to the invention during a cleaning process, as it were, as a cleaning booster, or by adding the agents to be used according to the invention to the preparation of cleaning agents.
- the cleaning takes place in an alkaline medium.
- the surfactant to be used according to the invention contains additional components with complex-forming properties and / or solubilizing agents and / or surface-active components.
- the components with complex-forming properties are preferably selected from nitrilotriacetic acid, ethylenediaminetetraacetic acid, methylglycine diacetic acid, gluconic acid, citric acid, dicarboxymethyl-L-glutamic acid, serine diacetic acid, imidosuccinic acid, and the group of polycarboxylic acids and phosphonic acids and their salts in each case.
- polycarboxylic acids examples include polyacrylic acids and copolymers of maleic anhydride and acrylic acid, and the sodium salts of these polymer acids.
- Commercial products are e.g. B. Sokalan® CP 5 and PA 30 from BASF, Alcosperse® 175 and 177 from Alco, LMW® 45 N and SPO2 ND from Norsohaas.
- Suitable native polymers include, for example, oxidized starch (e.g. DE 42 28 786) and polyamino acids such as polyglutamic acid or polyaspartic acid, e.g. B. from the companies Cygnus, Bayer, Rohm & Haas, Rhône-Poulenc or SRCHEM.
- Suitable phosphonic acids are 1-hydroxyethane-1,1-diphosphonic acid, diethylenetriaminepentamethylenephosphonic acid or ethylenediaminetetramethylenephosphonic acid and their alkali metal salts in each case.
- the components with complex-forming properties are particularly preferably selected from nitrilotriacetic acid, polyaspartic acid or polycarboxylic acids, which are preferably due to the polymerization of aspartic acid with other carboxylic acids, and gluconic acid.
- Additional solubilizing agents are preferably selected from the group of anionic surfactants, very particularly preferably from the sulfonates / sulfonic acids and in particular from cumene, xylene, octyl, naphthyl and alkylbenzenesulfonates / sulfonic acids, in the latter case the alkyl group between Contains 6 and 16 carbon atoms, or mixtures of these compounds and / or other compounds which act as solubilizers.
- anionic surfactants very particularly preferably from the sulfonates / sulfonic acids and in particular from cumene, xylene, octyl, naphthyl and alkylbenzenesulfonates / sulfonic acids, in the latter case the alkyl group between Contains 6 and 16 carbon atoms, or mixtures of these compounds and / or other compounds which act as solubilizers.
- Additional solubilizing agents can also be selected with preference from the group of liquid alcohols, in particular glycol ethers, very particularly preferably butyl diglycol or alcohols with comparable properties.
- caprylic acid or its salts may be preferred as an additional solubilizing agent.
- Preferred additional surface-active components are selected from the groups of anionic, cationic, nonionic, amphoteric surfactants, protein hydrolyzates, silicone compounds and phosphoric acid esters and their salts, unless they are already covered by the explanations given so far.
- alkoxylated alkyl alcohols having 8 to 22 carbon atoms in the alkyl chain may be present as nonionic surfactants in the surfactant compositions to be used according to the invention, particularly preferably at least one compound from the groups of the mixed ethoxylates / propoxylates branched or unbranched alkyl alcohols with 8 to 22 carbon atoms in the alkyl chain and the end-capped ethoxylates of branched or unbranched alkyl alcohols with 8 to 22 carbon atoms in the alkyl chain, and very particularly preferably at least one compound from the groups of ethoxylated and propoxylated alkyl alcohols with 12 up to 22 carbon atoms in the alkyl part, the butyl ether of ethoxylated alkyl alcohols with 12 to 22 carbon atoms in the alkyl part and methyl ether of ethoxylated alkyl alcohols with 12 to 22 carbon atoms
- Nonionic surfactants that besondes for the preparation of formulations for use in the invention are well suited, for example Plurafac ® LF 403, Plurafac ® 431 from BASF and Dehypon ® LT 104, Dehypon ® LST 254, Dehypon ® LS 54 and Dehypon ® G 2084 from COGNIS.
- Degressal ® SD 20 from BASF can be mentioned here as a further preferred surfactant with good defoaming properties.
- Preferred application forms of the surfactant agents to be used according to the invention are aqueous solution, gel, emulsion, paste, dispersion, solid shaped body, powder.
- surfactant to be used according to the invention in contact with the surfaces to be cleaned in concentrated or diluted form by immersion or by filling the object to be disinfected and / or by means of application aids.
- Preferred application tools are sponge, cloths, rags, brushes, wipers, rubber, spray device, foam device.
- the surfactants to be used according to the invention can be used for cleaning and disinfection at the same time.
- a cleaning solution to remove silicone-containing residues from surfaces which by diluting the agent to be used according to the invention with water, which optionally contains further auxiliaries and / or active substances, by a dilution factor of 1: 5 to 1: 10000, preferably 1:20 to 1: 1000, is available.
- the cleaning solution thus obtainable preferably contains, based on the total cleaning solution a), a total of 0.00001 to 6.5% by weight of components a) plus b) in addition to 0.00001 to 13% by weight of components c) plus d) plus e), where the proportion of individual components can also be zero, and b) 0.05 to 10% by weight of alkali metal hydroxide and c) 0.03 to 5% by weight of agent with complex-forming properties and d) optionally 0.03 to 5% by weight solubilizing agent and e) optionally further low-foaming surfactants.
- the surfactant or cleaning solution to be used according to the invention is pumped around and / or sprayed manually or in an automatic system in the system, the operating temperatures between 0 and 80 ° C. and the pumping or spraying times between 5 and 60 minutes and after treatment, the system surfaces may be disinfected in a further step and then rinsed with water of drinking water quality.
- test soiling was applied to stainless steel sheets (5 x 10 cm) and left there for 24 hours at 25 ° C. Subsequently, the metal sheets so contaminated in this way were immersed 12 times per minute in various tenside-containing alkaline cleaning solutions containing 0.5% NaOH over a period of 20 minutes. The tests were carried out using a fully automatic diving apparatus. The detachment behavior under these conditions was then determined gravimetrically.
- Table 1 shows which combinations of surfactants were used to prepare the cleaning solutions. Table 1:
- Table 2 shows how well the detachment behavior of the different surfactant combinations was assessed under the conditions described against the silicone test soiling.
- the detachment behavior was expressed as a percentage of the amount of test soiling that could be detached.
- Table 3 shows which combinations were used to prepare the cleaning solutions and how they performed in the corresponding detachment test.
- Table 3 shows that it is crucial for the detachment behavior of silicone which surfactants are used for cleaning.
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)
- Medicines Containing Material From Animals Or Micro-Organisms (AREA)
- Mechanical Treatment Of Semiconductor (AREA)
- Crystals, And After-Treatments Of Crystals (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10022419A DE10022419A1 (de) | 2000-05-09 | 2000-05-09 | Silikon-Entferner |
| DE10022419 | 2000-05-09 | ||
| PCT/EP2001/004824 WO2001085885A1 (de) | 2000-05-09 | 2001-04-28 | Silikon-entferner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1280877A1 true EP1280877A1 (de) | 2003-02-05 |
| EP1280877B1 EP1280877B1 (de) | 2006-08-30 |
Family
ID=7641219
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP01940382A Expired - Lifetime EP1280877B1 (de) | 2000-05-09 | 2001-04-28 | Silikon-entferner |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US6946037B2 (de) |
| EP (1) | EP1280877B1 (de) |
| AT (1) | ATE338107T1 (de) |
| AU (1) | AU7397901A (de) |
| CA (1) | CA2408662C (de) |
| DE (2) | DE10022419A1 (de) |
| WO (1) | WO2001085885A1 (de) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7101832B2 (en) * | 2003-06-19 | 2006-09-05 | Johnsondiversey, Inc. | Cleaners containing peroxide bleaching agents for cleaning paper making equipment and method |
| US7802359B2 (en) * | 2007-12-27 | 2010-09-28 | Freescale Semiconductor, Inc. | Electronic assembly manufacturing method |
| US9382192B2 (en) | 2012-02-14 | 2016-07-05 | Dow Global Technologies Llc | Nonionic surfactant compositions |
| CN114364777B (zh) * | 2019-09-25 | 2023-10-13 | 陶氏环球技术有限责任公司 | 织物护理组合物 |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3234258A (en) | 1963-06-20 | 1966-02-08 | Procter & Gamble | Sulfation of alpha olefins |
| US4539134A (en) * | 1982-12-02 | 1985-09-03 | Halliburton Company | Methods and cleaning compositions for removing organic materials from metallic surfaces |
| US5075041A (en) | 1990-06-28 | 1991-12-24 | Shell Oil Company | Process for the preparation of secondary alcohol sulfate-containing surfactant compositions |
| WO1992018600A1 (en) * | 1991-04-10 | 1992-10-29 | Minnesota Mining And Manufacturing Company | Low voc cleaning compositions and methods |
| JP3219536B2 (ja) * | 1992-07-01 | 2001-10-15 | 株式会社資生堂 | 洗浄剤組成物 |
| DE4228786A1 (de) | 1992-08-29 | 1994-03-03 | Henkel Kgaa | Geschirrspülmittel mit ausgewähltem Builder-System |
| DE4324152A1 (de) * | 1993-07-19 | 1995-01-26 | Bayer Ag | Zusammensetzungen zur Entfernung von Silikonöl enthaltenden Avivagen, daraus hergestellte wäßrige Dispersionen und deren Verwendung |
| GB2282607A (en) * | 1993-10-06 | 1995-04-12 | Itac Limited | Stripping compositions comprising sulphonic acid and thickener |
| JPH08199472A (ja) * | 1995-01-11 | 1996-08-06 | Nippon Saafuakutanto Kogyo Kk | 繊維用精練洗浄剤組成物 |
| EP0982394A1 (de) * | 1998-08-27 | 2000-03-01 | The Procter & Gamble Company | Flüssige neutrales oder alkalisches Reinigungsmittel für harte Oberflächen |
-
2000
- 2000-05-09 DE DE10022419A patent/DE10022419A1/de not_active Withdrawn
-
2001
- 2001-04-28 DE DE50110881T patent/DE50110881D1/de not_active Expired - Lifetime
- 2001-04-28 AT AT01940382T patent/ATE338107T1/de not_active IP Right Cessation
- 2001-04-28 EP EP01940382A patent/EP1280877B1/de not_active Expired - Lifetime
- 2001-04-28 WO PCT/EP2001/004824 patent/WO2001085885A1/de not_active Ceased
- 2001-04-28 CA CA002408662A patent/CA2408662C/en not_active Expired - Lifetime
- 2001-04-28 US US10/276,200 patent/US6946037B2/en not_active Expired - Lifetime
- 2001-04-28 AU AU73979/01A patent/AU7397901A/en not_active Abandoned
Non-Patent Citations (1)
| Title |
|---|
| See references of WO0185885A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| DE50110881D1 (de) | 2006-10-12 |
| AU7397901A (en) | 2001-11-20 |
| EP1280877B1 (de) | 2006-08-30 |
| CA2408662A1 (en) | 2002-11-12 |
| ATE338107T1 (de) | 2006-09-15 |
| CA2408662C (en) | 2009-12-29 |
| US6946037B2 (en) | 2005-09-20 |
| WO2001085885A1 (de) | 2001-11-15 |
| US20030162676A1 (en) | 2003-08-28 |
| DE10022419A1 (de) | 2001-11-22 |
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| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
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| 17P | Request for examination filed |
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| RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
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