WO2001000717A1 - Vorrichtung und verfahren zur derivatisierung von formkörpern - Google Patents
Vorrichtung und verfahren zur derivatisierung von formkörpern Download PDFInfo
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- WO2001000717A1 WO2001000717A1 PCT/EP2000/005456 EP0005456W WO0100717A1 WO 2001000717 A1 WO2001000717 A1 WO 2001000717A1 EP 0005456 W EP0005456 W EP 0005456W WO 0100717 A1 WO0100717 A1 WO 0100717A1
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- WIPO (PCT)
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- reaction
- reactor
- temperature
- reaction solution
- polymer
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
- B01J20/28014—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their form
- B01J20/28042—Shaped bodies; Monolithic structures
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/30—Processes for preparing, regenerating, or reactivating
- B01J20/32—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating
- B01J20/3202—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating characterised by the carrier, support or substrate used for impregnation or coating
- B01J20/3206—Organic carriers, supports or substrates
- B01J20/3208—Polymeric carriers, supports or substrates
- B01J20/3212—Polymeric carriers, supports or substrates consisting of a polymer obtained by reactions otherwise than involving only carbon to carbon unsaturated bonds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/30—Processes for preparing, regenerating, or reactivating
- B01J20/32—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating
- B01J20/3231—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating characterised by the coating or impregnating layer
- B01J20/3242—Layers with a functional group, e.g. an affinity material, a ligand, a reactant or a complexing group
- B01J20/3244—Non-macromolecular compounds
- B01J20/3246—Non-macromolecular compounds having a well defined chemical structure
- B01J20/3248—Non-macromolecular compounds having a well defined chemical structure the functional group or the linking, spacer or anchoring group as a whole comprising at least one type of heteroatom selected from a nitrogen, oxygen or sulfur, these atoms not being part of the carrier as such
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/30—Processes for preparing, regenerating, or reactivating
- B01J20/32—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating
- B01J20/3231—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating characterised by the coating or impregnating layer
- B01J20/3242—Layers with a functional group, e.g. an affinity material, a ligand, a reactant or a complexing group
- B01J20/3244—Non-macromolecular compounds
- B01J20/3246—Non-macromolecular compounds having a well defined chemical structure
- B01J20/3248—Non-macromolecular compounds having a well defined chemical structure the functional group or the linking, spacer or anchoring group as a whole comprising at least one type of heteroatom selected from a nitrogen, oxygen or sulfur, these atoms not being part of the carrier as such
- B01J20/3251—Non-macromolecular compounds having a well defined chemical structure the functional group or the linking, spacer or anchoring group as a whole comprising at least one type of heteroatom selected from a nitrogen, oxygen or sulfur, these atoms not being part of the carrier as such comprising at least two different types of heteroatoms selected from nitrogen, oxygen or sulphur
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/30—Processes for preparing, regenerating, or reactivating
- B01J20/32—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating
- B01J20/3231—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating characterised by the coating or impregnating layer
- B01J20/3242—Layers with a functional group, e.g. an affinity material, a ligand, a reactant or a complexing group
- B01J20/3244—Non-macromolecular compounds
- B01J20/3265—Non-macromolecular compounds with an organic functional group containing a metal, e.g. a metal affinity ligand
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/30—Processes for preparing, regenerating, or reactivating
- B01J20/32—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating
- B01J20/3231—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating characterised by the coating or impregnating layer
- B01J20/3242—Layers with a functional group, e.g. an affinity material, a ligand, a reactant or a complexing group
- B01J20/3268—Macromolecular compounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/30—Processes for preparing, regenerating, or reactivating
- B01J20/32—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating
- B01J20/3231—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating characterised by the coating or impregnating layer
- B01J20/3242—Layers with a functional group, e.g. an affinity material, a ligand, a reactant or a complexing group
- B01J20/3268—Macromolecular compounds
- B01J20/3278—Polymers being grafted on the carrier
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J39/00—Cation exchange; Use of material as cation exchangers; Treatment of material for improving the cation exchange properties
- B01J39/08—Use of material as cation exchangers; Treatment of material for improving the cation exchange properties
- B01J39/16—Organic material
- B01J39/17—Organic material containing also inorganic materials, e.g. inert material coated with an ion-exchange resin
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J41/00—Anion exchange; Use of material as anion exchangers; Treatment of material for improving the anion exchange properties
- B01J41/08—Use of material as anion exchangers; Treatment of material for improving the anion exchange properties
- B01J41/12—Macromolecular compounds
Definitions
- the invention relates to a method for the derivatization of moldings with covalently bound polymers, and an apparatus for performing this method.
- the derivatizations are usually carried out in a batch process, for example in DE 43 10 964 and EP 0 337 144. There the derivatization of hydroxyl-containing carriers is carried out
- Methacrylic acid derivatives, allylamines, etc. described under the catalysis of cerium (IV) salts are continuously stirred in the reaction solution over the entire duration of the reaction, or the solutions are pumped or pumped through over the entire duration of the reaction.
- Patent applications DE 195 01 726, WO 96/22 316 and DE 196 24 813 disclose polymerizable derivatives of polyamides, as well as processes for polymerizing on such derivatized polyamides.
- the molded body to be modified is derivatized in a reaction tube which can be heated from the outside.
- the polymer is reacted with the monomer, the reaction solution being continuously pumped through or pumped around under heating.
- the conduct of the reaction during the individual reaction steps, especially that of the polymerization, is of essential importance for the quality of the polymers obtained.
- the resulting derivatized moldings often show an inhomogeneous distribution of the applied polymer.
- filtration effects in the fiber structure lead to the accumulation of homopolymer, which is difficult to remove.
- the task is therefore to develop a process which enables the production of derivatized molded articles with a high and uniform degree of polymerization.
- the accumulation of homopolymer in porous moldings should be reduced.
- the invention therefore relates to a process for the derivatization of moldings, comprising a polymerization stage and optional prereactions and polymer-analogous reactions, at least one of the reaction stages comprising the following reaction steps: a) equilibrating the reaction space with the reaction solution, b) tempering the reaction space to a temperature which is less than or equal to the threshold temperature, c) optional heating up to the threshold temperature, d) switching off the flow, e) heating the reaction space to the reaction temperature.
- one or more further steps are additionally carried out using the method according to the invention.
- the invention also relates to a device for carrying out the process according to the invention, comprising a reactor with a heat exchange device, one or more storage vessels connected to the reactor via one or more inlets with pumps and / or valves, and one or more heat exchangers for pre-tempering the solutions , an outlet from the reactor and preferably a control or regulating device for controlling the process steps.
- Reactor, drain and collecting vessel as well as the templates are provided with fittings which allow solutions to be pumped around and pumped through.
- a preferred embodiment of the device is furthermore two or more reactors connected in parallel via distributor pieces.
- Figure 1 shows a reaction plant according to the invention with a double-walled reactor.
- Figure 2 shows a distributor head for a plant with six reactors.
- Porous and non-porous moldings suitable as the base polymer are known to the person skilled in the art and can also be obtained commercially in part.
- Base polymers according to the invention are also base supports with functional groups such as primary or secondary aliphatic hydroxyl groups, such as, for example, crosslinked or uncrosslinked polysaccharides based on agarose or cellulose and their derivatives, furthermore polymers based on dextran and other polymers as disclosed, for example, in DE 43 10 964.
- functional groups such as primary or secondary aliphatic hydroxyl groups, such as, for example, crosslinked or uncrosslinked polysaccharides based on agarose or cellulose and their derivatives, furthermore polymers based on dextran and other polymers as disclosed, for example, in DE 43 10 964.
- porous or non-porous shaped bodies consisting of such base polymers are, for example, pearl-shaped shaped bodies, membranes, tubes, hollow fiber membranes, spiral membranes,
- reaction sequences known from DE 195 01 726 and DE 196 24 813 can be used for this purpose. These reaction sequences have in common that an ethylenically unsaturated derivatizing agent, ie an amino- or carboxy-reactive compound which contains a polymerizable double bond, is reacted with the amino or carboxyl groups of the polyamide.
- an ethylenically unsaturated derivatizing agent ie an amino- or carboxy-reactive compound which contains a polymerizable double bond
- amino-reactive compounds such as, for example, glycidyl methacrylate or vinyllazlactone derivatives
- glycidyl methacrylate or vinyllazlactone derivatives are known to the person skilled in the art and can be found, for example, in DE 195 01 726 and DE 196 24 813.
- compounds which can react with carboxyl groups and which contain polymerizable double bonds for example allylamine, can be used.
- the base polymer contains both carboxyl and amino groups
- additional amino groups can be introduced into the base polymer by the reaction with 1,2-ethylenediamine, which can be further implemented as described above.
- Preferred diamino compounds are, in particular, ⁇ -diaminoalkanes, such as, for example, 1,2-ethylenediamine, 1,3-diaminopropane, 1,4-diaminobutane or 1,6-diaminohexane. It is also possible to react the amino groups of the polyamide with a dicarboxylic acid or a dicarboxylic acid anhydride in order to then insert polymerizable double bonds on the carboxyl groups.
- ⁇ -diaminoalkanes such as, for example, 1,2-ethylenediamine, 1,3-diaminopropane, 1,4-diaminobutane or 1,6-diaminohexane.
- Monomers according to the invention are building blocks as disclosed in DE 195 01 726 and DE 196 24 813.
- the monomers which are polymerized on can carry certain functional groups, also called separation effectors according to the invention.
- separation effectors according to the invention can be linked in a further reaction step after the block polymerization to reactive groups which have been introduced via the monomers.
- Separation effectors such as ionic groups such as sulfonic or carboxylic acid groups, substituted amines, hydrophobic groups, metal chelate groups, thiophilic groups, chiral groups, functionalities a large number of those skilled in the art are known for binding enzymes or antibodies and are disclosed, for example, in DE 195 01 726 and DE 196 24 813.
- the derivatized and polymer-modified moldings according to the invention which contain separation effectors on the polymerized chains, can be used for material separations or as ion exchangers in a similar manner as is customary, for example, for particulate sorbents with similar separation effectors.
- the preferred polyamides e.g. NYLON® 66 or
- NYLON® 6 only contain terminal free carboxyl and / or amino groups.
- a block polymer is formed when polymerizing with monomers onto the derivatized base polymer. If, in addition to the terminal free carboxyl and / or amino groups, the base polymer also contains free carboxyl and / or amino groups in the side position, additional side polymerizable groups are formed. In the case of a subsequent polymerization, grafting then takes place in addition to the formation of the block polymer.
- Block and graft polymers are collectively referred to according to the invention as polymer-modified base polymers or polymer-modified materials. Block and graft polymerisation is summarized according to the invention as polymerisation on.
- the teaching according to the invention can be used for all processes in which monomeric building blocks are polymerized onto a support, and both block and graft polymers can be formed.
- This also includes, for example Graft polymerization on support with hydroxyl groups, in which cerium (IV) is used as a catalyst.
- discontinuous process according to the invention for the preparation of polymer-modified base polymers can be used for all described stages of the reaction sequences, i.e. “For pre-reactions that are carried out before polymerisation and for example
- reaction stages the different stages of the reaction sequence are referred to as reaction stages.
- the greatest advantage of carrying out the reaction according to the invention is associated with the polymerization. There it is possible for the first time both to achieve a high and homogeneous degree of polymerization and to maintain the permeability of porous molded articles.
- reaction stage achieved advantages by the inventive method become. Due to the rapid pumping around of the reaction solution and the careful equilibration of the reaction space, a similar concentration of the reaction solution is present at every location of the shaped body. In the reaction phase, in which this state is no longer changed by interrupting the flow, this ensures a homogeneous
- the reaction solution may have a different distribution in the shaped body during the reaction, which results in inhomogeneous covering of the shaped body with the reaction product. This aspect suggests the conduct of the reaction according to the invention in addition to the polymerization also in the other reaction steps.
- the prepolymerization preceding or following optional reaction stages are carried out according to the method according to the invention as well as the polymerization itself.
- FIG. 1 shows an example of a device according to the invention for carrying out the method.
- the heart of the system is a reactor (1).
- the reactor is tubular with a length of 10 to 100 cm and a diameter of 2 to 90 cm. This version is used for the derivatization of moldings which can be introduced into the reactor without further aids.
- other shaped bodies such as, for example, wound flat membranes with spacers, holding devices or corresponding cutouts can be incorporated in the reactor.
- the reactor (1) is provided with a heat exchange device. This is preferably a double jacket (2) which can be tempered by a connected heat exchanger (3).
- the plant according to the invention is not limited to only one reaction vessel. Due to the need for a heat exchange device, the reactors cannot be enlarged arbitrarily, since otherwise the heat exchange takes place only insufficiently quickly. According to the invention, however, the throughput of the plant can be greatly increased by controlling up to, for example, 12 reactors in parallel via suitable distributors.
- the distributors which allow the parallel, uniform inflow and outflow of the solutions from the individual reactors, are typically connected to the reactors via short pipe sections or hoses. Similar distributors regulate the liquid inlet and outlet in the heat exchangers that surround the individual reactors.
- the term reactor or reaction tube therefore means not only a single reactor but also a plurality of reactors or reaction tubes connected in parallel.
- One or more storage containers (4) are connected to the reaction tube (1), from which reaction solutions or washing solutions can be pumped into the reactor via feed lines via one or more pumps (5).
- the feed line to the reaction tube is preferably provided with a second heat exchanger (6) so that the solutions can be pumped into the reactor at a pre-tempered temperature.
- the reactor has a drain (7). If a solution is pumped through, this leads into a waste vessel (8), and if pumped around, back into the feed line to the reactor.
- the control of the individual reaction steps ie the temperature, flow rate, supply of the reaction solutions etc. can be done manually or automatically via an integrated control device. Regulatory mechanisms and control devices that such Allowing control are known to the person skilled in the art.
- Stopping pumping or pumping around These operating states are, for example, with devices as in
- FIG 1 shown and obvious variants of this device possible.
- the pumps and valves must be operated in parallel or independently of each other.
- it must be possible to operate different valves in parallel or independently of one another for pumping through or pumping around the solutions.
- Figure 2 shows a distributor head for the parallel control of 6 reactors.
- Partial illustration A shows a side view
- partial image B shows a section through the distributor head along plane E.
- the shaped body in the reactor is saturated with the reaction solution. This is done by quickly pumping around or pumping through the reaction solution. When pumping around, the reaction solution is returned after flowing through the reactor and pumped through the reactor again; when pumping through the Discarded reaction solution after flowing through the plant once.
- the reaction chamber ie the reactor with the shaped body located therein, can be saturated with the reaction solution and further reaction steps such as the preheating of the reaction solution by pumping around or pumping through the reaction solution or a combination of the two possibilities.
- the reaction solution is preferably pumped through the reactor at a linear flow rate of 2-100 cm / min during the saturation phase of approx.
- this is referred to as rapid pumping and corresponds approximately to a flow of 5 bed volumes, which guarantees a homogeneous distribution of the reaction solution in the reaction space.
- the duration and flow rate during the mixing phase can, however, be varied beyond the specified values depending on the application.
- the flow is either interrupted directly by switching off the pump, or preferably the pump is set to reflux.
- the reaction solution is preheated with the heat exchanger (6).
- the temperature in this phase is preferably below that
- Threshold temperature at which the reaction rate is only up to 1/10 of the rate during the actual reaction The reason for this is that the reaction should only start after equilibrating the reaction space and switching off the flow. Pre-heating during pumping enables faster heating after the flow has been switched off. This procedure is particularly important for the polymerization.
- the temperature during the pre-tempering must not be chosen so high that thermally initiated radiator fall occurs. Otherwise there would be homopolymerization of the monomers even before entering the reactor and thus undefined reaction conditions and filtration effects.
- the threshold temperature when using 2,2'-azoisobutyronitrile (AIBN) should therefore be set, for example, at approx. 60 ° C. It can be seen from Table 1 that the half-life of the azoisobutyronitrile at 60 ° C. is approximately 21 hours. During a warm-up period of half an hour, 1.2% of the AIBN would decompose.
- the saturation of the reaction space with the reaction solution and the optional subsequent preheating of the reaction solution up to the threshold temperature is referred to as equilibration of the reaction space.
- the flow is interrupted according to the invention and the mixture is brought to the reaction temperature from the outside by tempering the jacket with a heat exchanger (3).
- the reaction temperature depends on the type of reaction and is known to the person skilled in the art from other processes.
- the concentration of the monomers remains constant in time and space during the polymerization and there is no local enrichment of homopolymer.
- the reaction solution is pumped off and the reactor is rinsed with appropriate solvents.
- Glvcidyl methacrylate 187 g epoxypropyl methacrylate and 330 g sodium hydroxide solution (32%) are dissolved in 2250 ml water and 750 ml 1,4-dioxane. This solution comes with pumped through the reactor at a flow of 600 ml / min for 3 minutes. Then it switches to return. The reaction solution is brought to a temperature of 42 ° C. through the heat exchanger (6). The pump is switched off and left at a water jacket temperature of 55 ° C. for 1.5 hours. Then with 3.5 liters of water,
- Washed acetone and toluene Washed acetone and toluene.
- a solution of 1.5 liters of diethylamine in 1.5 liters of water is pumped through the reactor at a flow of 600 ml / min for 3 minutes. Then it switches to return.
- the reaction solution is brought to a temperature of 65 ° C. through the heat exchanger (6).
- the pump is switched off and left to stand for 3 hours at a water jacket temperature of 65 ° C. Then it is washed with 4 liters of water.
- a solution of 750 ml of ethanolamine in 3000 ml of water is pumped through the reactor at a flow of 600 ml / min for 4 minutes. Then it switches to return.
- the reaction solution is brought to a temperature of 44 ° C. by the heat exchanger (6).
- the pump is switched off and left to stand for 2.5 hours at a water jacket temperature of 60 ° C. It is then washed with 3.5 liters of water, 1 M sodium hydroxide solution and ethanol and dried in vacuo.
- the starting mass of the membrane material was 66 g. After the modification, the material had a mass of 100 g, which corresponds to a mass increase of 51% with respect to the mass of the starting polymer.
- test segments were taken from different areas of the membrane mats (64 capillaries each, 101 mm long).
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Analytical Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Polyamides (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP00942066A EP1200513A1 (de) | 1999-06-23 | 2000-06-14 | Vorrichtung und verfahren zur derivatisierung von formkörpern |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19928719A DE19928719A1 (de) | 1999-06-23 | 1999-06-23 | Vorrichtung und Verfahren zur Derivatisierung von Formkörpern |
DE19928719.8 | 1999-06-23 |
Publications (1)
Publication Number | Publication Date |
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WO2001000717A1 true WO2001000717A1 (de) | 2001-01-04 |
Family
ID=7912237
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2000/005456 WO2001000717A1 (de) | 1999-06-23 | 2000-06-14 | Vorrichtung und verfahren zur derivatisierung von formkörpern |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1200513A1 (de) |
DE (1) | DE19928719A1 (de) |
WO (1) | WO2001000717A1 (de) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1996022316A1 (de) * | 1995-01-20 | 1996-07-25 | Merck Patent Gmbh | Polymerisationsfähige derivate von polyamiden |
DE19624813A1 (de) * | 1995-01-20 | 1998-01-02 | Merck Patent Gmbh | Polymerisationsfähige Derivate von Polyamiden |
-
1999
- 1999-06-23 DE DE19928719A patent/DE19928719A1/de not_active Withdrawn
-
2000
- 2000-06-14 WO PCT/EP2000/005456 patent/WO2001000717A1/de not_active Application Discontinuation
- 2000-06-14 EP EP00942066A patent/EP1200513A1/de not_active Withdrawn
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1996022316A1 (de) * | 1995-01-20 | 1996-07-25 | Merck Patent Gmbh | Polymerisationsfähige derivate von polyamiden |
DE19624813A1 (de) * | 1995-01-20 | 1998-01-02 | Merck Patent Gmbh | Polymerisationsfähige Derivate von Polyamiden |
Also Published As
Publication number | Publication date |
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DE19928719A1 (de) | 2000-12-28 |
EP1200513A1 (de) | 2002-05-02 |
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