DE10126133B4 - Process and apparatus for the preparation of highly viscous or highly stabilized polycondensates and demonomerized PA 6 - Google Patents
Process and apparatus for the preparation of highly viscous or highly stabilized polycondensates and demonomerized PA 6 Download PDFInfo
- Publication number
- DE10126133B4 DE10126133B4 DE2001126133 DE10126133A DE10126133B4 DE 10126133 B4 DE10126133 B4 DE 10126133B4 DE 2001126133 DE2001126133 DE 2001126133 DE 10126133 A DE10126133 A DE 10126133A DE 10126133 B4 DE10126133 B4 DE 10126133B4
- Authority
- DE
- Germany
- Prior art keywords
- reaction stage
- polycondensate
- reactor
- melt
- distributor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G69/00—Macromolecular compounds obtained by reactions forming a carboxylic amide link in the main chain of the macromolecule
- C08G69/46—Post-polymerisation treatment
-
- 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
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/0053—Details of the reactor
-
- 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
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/24—Stationary reactors without moving elements inside
- B01J19/2455—Stationary reactors without moving elements inside provoking a loop type movement of the reactants
- B01J19/2465—Stationary reactors without moving elements inside provoking a loop type movement of the reactants externally, i.e. the mixture leaving the vessel and subsequently re-entering it
-
- 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
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/24—Stationary reactors without moving elements inside
- B01J19/247—Suited for forming thin films
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G69/00—Macromolecular compounds obtained by reactions forming a carboxylic amide link in the main chain of the macromolecule
- C08G69/02—Polyamides derived from amino-carboxylic acids or from polyamines and polycarboxylic acids
- C08G69/04—Preparatory processes
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G69/00—Macromolecular compounds obtained by reactions forming a carboxylic amide link in the main chain of the macromolecule
- C08G69/02—Polyamides derived from amino-carboxylic acids or from polyamines and polycarboxylic acids
- C08G69/08—Polyamides derived from amino-carboxylic acids or from polyamines and polycarboxylic acids derived from amino-carboxylic acids
- C08G69/14—Lactams
- C08G69/16—Preparatory processes
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G69/00—Macromolecular compounds obtained by reactions forming a carboxylic amide link in the main chain of the macromolecule
- C08G69/02—Polyamides derived from amino-carboxylic acids or from polyamines and polycarboxylic acids
- C08G69/08—Polyamides derived from amino-carboxylic acids or from polyamines and polycarboxylic acids derived from amino-carboxylic acids
- C08G69/14—Lactams
- C08G69/16—Preparatory processes
- C08G69/18—Anionic polymerisation
-
- 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
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/00049—Controlling or regulating processes
- B01J2219/00164—Controlling or regulating processes controlling the flow
- B01J2219/00166—Controlling or regulating processes controlling the flow controlling the residence time inside the reactor vessel
-
- 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
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/00049—Controlling or regulating processes
- B01J2219/00182—Controlling or regulating processes controlling the level of reactants in the reactor vessel
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Polyamides (AREA)
- Other Resins Obtained By Reactions Not Involving Carbon-To-Carbon Unsaturated Bonds (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
Abstract
Verfahren zur Herstellung von hochviskosen oder hochstabilisierten Polykondensaten und entmonomerisiertem PA6 unter Verwendung von senkrechten Reaktionsstufen, bei dem Polykondensatschmelze aus einer Vorstufe in das obere Ende der Reaktionsstufe eingespeist und über Verteilereinrichtungen und oberflächenvergrößernde Elemente verteilt wird und mittels Inertgas oder Vakuum aus der fließenden Polykondensatschmelze Abproduktionsreaktionspartner entfernt und oberhalb des Pegels der Polykondensatschmelze aus der Reaktionsstufe abgezogen werden, dadurch gekennzeichnet, dass die Produktverweilzeit im Sumpf der Reaktionsstufe so gewählt wird, dass am unteren Ende der Reaktionsstufe ein im chemischen Gleichgewicht befindliches Polykondensat vorliegt, von dem ein Teil in Verteilereinrichtungen am oberen Ende der Reaktionsstufe zurückgespeist wird, während der verbleibende Teil entsprechend dem gewählten Durchsatz zur weiteren Verwendung aus der Reaktionsstufe ausgetragen wird.method for the preparation of highly viscous or highly stabilized polycondensates and demonomerized PA6 using vertical reaction stages, in the polycondensate melt from a precursor to the top fed to the reaction stage and distribution facilities and surface enlarging elements is distributed and by means of inert gas or vacuum from the flowing polycondensate melt Removal reaction partner and above the level of Polycondensate melt are withdrawn from the reaction stage, characterized characterized in that the product residence time in the bottom of the reaction stage so chosen is that at the lower end of the reaction stage in the chemical Equilibrium polycondensate is present, of which a part fed back in manifolds at the top of the reaction stage will, while the remaining part according to the selected throughput to further Use is discharged from the reaction stage.
Description
Die Erfindung bezieht sich auf ein Verfahren zur Herstellung von hochviskosen oder hochstabilisierten Polykondensaten und entmonomerisiertem PA6 der im Oberbegriff des Anspruchs 1 genannten Art sowie auf eine Vorrichtung zur Durchführung des Verfahrens.The The invention relates to a process for producing high-viscosity or highly stabilized polycondensates and demonomerized PA6 the type mentioned in the preamble of claim 1 and to a Apparatus for carrying out of the procedure.
Für die Polykondensation ist es zur Erhöhung der Viskosität bekannt, eine Entgasung in Doppelschneckenextrudern durchzuführen. Derartige Doppelschneckenextruder stellen jedoch aufwendige und verschleißanfällige Bauteile dar, und das Ausmaß der hiermit erreichbaren Entgasung ist begrenzt.For the polycondensation is it to increase the viscosity known to perform a degassing in twin screw extruders. Such twin-screw extruder However, represent complex and wear-prone components, and the Extent of This achievable degassing is limited.
Ebenso ist es bekannt, Nachkondensationsverfahren in annähernd horizontal angeordneten Nachkondensatoren durchzuführen. Dabei wird die Polykondensationsschmelze laufend aus einem Niveau durch sich drehende innere mechanische Vorrichtungen der oberhalb des Schmelzniveaus befindlichen Atmosphäre ausgesetzt und so entgast. Das entgaste Produkt wird nach außen abgeführt. Bei diesem Verfahren ist jedoch keine ausreichende exakte Produktverweilzeit gesichert, wodurch Qualitätseinbußen des fertigen Polykondensates eintreten. Auf keinen Fall wird das chemische Gleichgewicht am Ende der Polykondensation eingestellt. Im übrigen sind die dafür verwendeten Vorrichtungen kompliziert, insbesondere die Abdichtung zur Außenatmosphäre ist ein nicht ausreichend gelöstes Problem, wodurch sauerstoffanfällige Polykondensate geschädigt werden.As well It is known postcondensation in approximately horizontal arranged to perform post-condensers. In this case, the polycondensation melt running out of a level by rotating internal mechanical Exposed to devices located above the melt level atmosphere and so degassed. The degassed product is discharged to the outside. at However, this method does not provide a sufficient exact product residence time secured, reducing the quality of the finished polycondensates occur. In no case will the chemical Equilibrium set at the end of the polycondensation. Otherwise are the one for that used devices complicated, especially the seal to the outside atmosphere is a not sufficiently solved Problem, causing oxygen-susceptible Polycondensates are damaged.
Aus
der
Aus
der
Aus
der
Der Erfindung liegt die Aufgabe zugrunde, ein Verfahren der eingangs genannten Art sowie eine Vorrichtung zur Durchführung des Verfahrens zu schaffen, das bzw. die bei geringem Aufwand eine starke Erhöhung der Viskosität ermöglicht.Of the Invention is based on the object, a method of the initially and a device for carrying out the method, the one or the other at low cost, a strong increase in viscosity allows.
Diese Aufgabe wird durch die im Anspruch 1 bzw. 4 angegebenen Merkmale gelöst.These The object is achieved by the features specified in claim 1 and 4 respectively solved.
Vorteilhafte Ausgestaltungen und Weiterbildungen der Erfindung ergeben sich aus den Unteransprüchen.advantageous Refinements and developments of the invention will become apparent the dependent claims.
Durch die Zurückspeisung eines Teils der am unteren Ende der vertikal angeordneten Reaktionsstufe befindlichen Polykondensatschmelze und damit ein Umpumpen eines Teils dieser Schmelze wird in einfacher Weise eine Erhöhung der Viskosität und/oder eine Laktamreduzierung erreicht, da die Schmelze mehrmals über einen Bereich mit intensiver Entgasung geleitet wird, um Polykondensationsabprodukte wirksam zu entfernen. Die Verweilzeit in der Reaktionsstufe wird dabei jeweils zur Erreichung des chemischen Polykondensatgleichgewichts eingestellt, damit ausreichend Polykondensatabprodukt nachgebildet und im Entgasungsraum oberhalb des Schmelzeniveaus entfernt werden kann. Die Entfernung des Polykondensatabprodukts kann mittels Inertgas oder im Vakuum erfolgen.By the feeding back a portion of the lower end of the vertically arranged reaction stage located polycondensate melt and thus a pumping a Part of this melt is simply an increase in the Viscosity and / or achieved a Laktamreduzierung, since the melt several times over a Area with intensive degassing is routed to polycondensation by-products effective to remove. The residence time in the reaction stage is in each case to achieve the chemical polycondensation equilibrium adjusted so that sufficient polycondensate product replicated and removed in the degassing space above the melt level can. The removal of the polycondensate product can be carried out by means of inert gas or done in a vacuum.
Am Zusammenfluß von Polykondensat aus der Vorstufe und aus der Rückführung entsteht ein nicht im chemischen Gleichgewicht befindliches Polykondensat, da die Menge des Abproduktreaktionspartners sich unterhalb des chemischen Gleichgewichts des Vorstufenpolykondensats einstellt. Hier findet deshalb eine Polykondensationsreaktion statt. Die Viskosität der Polykondensationsschmelze steigt demzufolge nach dem Zusammenfluß nicht nur wegen der Mischung an, sondern auch weil eine Polykondensationsreaktion stattfindet, sofern ausreichend Verweilzeit direkt nach dem Zusammenfluß zur Verfügung steht. Es kann deshalb von Vorteil sein, durch Rohrerweiterung nach dem Zusammenfluß bis zur Nachkondensationsreaktionsstufe zusätzliche Verweilzeit zu schaffen.At the confluence of polycondensate from the precursor and from the recycle results in a non-chemical equilibrium polycondensate, since the amount of Abwirkktreaktionspartners sets below the chemical equilibrium of the precursor polycondensate. Therefore, a polycondensation reaction takes place here. The viscosity of the polycondensation melt therefore increases after the confluence not only because of the mixture, but also because a polycondensation reaction takes place, provided that sufficient residence time is available directly after the confluence. It may therefore be advantageous, by pipe expansion after the confluence to Nachkondensationsreaktionsstufe to additional residence time to create.
Ein Ausführungsbeispiel der Erfindung ist in der beigefügten Zeichnung dargestellt, die eine bevorzugte Ausführungsform der Reaktionsstufe zur Durchführung des erfindungsgemäßen Verfahrens zeigt.One embodiment the invention is in the attached Drawing showing a preferred embodiment of the reaction stage to carry out of the inventive method shows.
Die
in der Zeichnung gezeigte Reaktionsstufe umfaßt einen vertikalen Reaktor
In
dem Reaktor
Am
unteren Ende des Reaktors
Nach
der Verbindungsstelle
Es
ist auch möglich,
nach der Verbindungsstelle
Der
Reaktor
Die
Rückführleitung
Die
Entfernung des Polykondensatabprodukts kann mittels Einleitung eines
Inertgases über eine
Leitung
Für eine Polykondensation
zur Erhöhung
der Viskosität
kann die Verweilzeit der Schmelze in dem Reaktor
Zur Gewinnung von höher stabilisiertem Polykondensat können Stabilisatoren in der Vorstufe zugesetzt werden.to Gaining higher stabilized polycondensate can Stabilizers are added in the precursor.
Wenn das Verfahren zur Entlactamisierung von PA6 verwendet wird, wird das Niveau nicht angehoben, und es kann durch Umpumpen von 100% des Durchsatzes eine Lactamreduzierung von etwa 4,5% erreicht werden.If the process for the deacetamization of PA6 is used the level is not raised and it can be pumped by 100% the throughput a lactam reduction of about 4.5% can be achieved.
Der
Gasaustritt
Claims (7)
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2001126133 DE10126133B4 (en) | 2001-05-29 | 2001-05-29 | Process and apparatus for the preparation of highly viscous or highly stabilized polycondensates and demonomerized PA 6 |
EP02738083A EP1406948A1 (en) | 2001-05-29 | 2002-05-17 | Method for producing high-viscosity or highly-stable polycondensates and demonomerized pa6 |
UA20031212941A UA76471C2 (en) | 2001-05-29 | 2002-05-17 | Method for the preparation of high-viscous or high stable polycondensates, a method for the preparation of demonomerized and delactaminized polyamide -6 , and an apparatus for realizing these methods |
RU2003137774/04A RU2295545C2 (en) | 2001-05-29 | 2002-05-17 | Method and device for production of high-viscosity or high-stability poly-condensate of copolyamide on base of polyamide-6 or demonomerized polyamide-6 |
PCT/EP2002/005441 WO2002096975A1 (en) | 2001-05-29 | 2002-05-17 | Method for producing high-viscosity or highly-stable polycondensates and demonomerized pa6 |
CN 02814690 CN1249125C (en) | 2001-05-29 | 2002-05-17 | Method for producing high-viscosity or highly-stable polycondensates and demonomerized PA6 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2001126133 DE10126133B4 (en) | 2001-05-29 | 2001-05-29 | Process and apparatus for the preparation of highly viscous or highly stabilized polycondensates and demonomerized PA 6 |
Publications (2)
Publication Number | Publication Date |
---|---|
DE10126133A1 DE10126133A1 (en) | 2003-01-02 |
DE10126133B4 true DE10126133B4 (en) | 2007-03-29 |
Family
ID=7686512
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE2001126133 Expired - Lifetime DE10126133B4 (en) | 2001-05-29 | 2001-05-29 | Process and apparatus for the preparation of highly viscous or highly stabilized polycondensates and demonomerized PA 6 |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP1406948A1 (en) |
CN (1) | CN1249125C (en) |
DE (1) | DE10126133B4 (en) |
RU (1) | RU2295545C2 (en) |
UA (1) | UA76471C2 (en) |
WO (1) | WO2002096975A1 (en) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6906164B2 (en) | 2000-12-07 | 2005-06-14 | Eastman Chemical Company | Polyester process using a pipe reactor |
US7649109B2 (en) | 2006-12-07 | 2010-01-19 | Eastman Chemical Company | Polyester production system employing recirculation of hot alcohol to esterification zone |
US7943094B2 (en) | 2006-12-07 | 2011-05-17 | Grupo Petrotemex, S.A. De C.V. | Polyester production system employing horizontally elongated esterification vessel |
US7863477B2 (en) | 2007-03-08 | 2011-01-04 | Eastman Chemical Company | Polyester production system employing hot paste to esterification zone |
US7872089B2 (en) | 2007-07-12 | 2011-01-18 | Eastman Chemical Company | Multi-level tubular reactor with internal tray |
US7847053B2 (en) | 2007-07-12 | 2010-12-07 | Eastman Chemical Company | Multi-level tubular reactor with oppositely extending segments |
US7829653B2 (en) | 2007-07-12 | 2010-11-09 | Eastman Chemical Company | Horizontal trayed reactor |
US7842777B2 (en) | 2007-07-12 | 2010-11-30 | Eastman Chemical Company | Sloped tubular reactor with divided flow |
US7868129B2 (en) | 2007-07-12 | 2011-01-11 | Eastman Chemical Company | Sloped tubular reactor with spaced sequential trays |
US7872090B2 (en) | 2007-07-12 | 2011-01-18 | Eastman Chemical Company | Reactor system with optimized heating and phase separation |
US7868130B2 (en) | 2007-07-12 | 2011-01-11 | Eastman Chemical Company | Multi-level tubular reactor with vertically spaced segments |
US7858730B2 (en) | 2007-07-12 | 2010-12-28 | Eastman Chemical Company | Multi-level tubular reactor with dual headers |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2461902A1 (en) * | 1974-12-31 | 1976-07-08 | Zimmer Ag | Removing volatile components from molten polyamides - by subjecting polyamide to turbulent treatment with gas stream at subatmospheric pressure |
DD265151A1 (en) * | 1987-09-30 | 1989-02-22 | Schwarza Chemiefaser | MELTED GASER FOR THE CONTINUOUS POLYMERIZATION OF POLYAMIDE-6 FROM EPSILON-KAPROLAKTAM |
DE4039857C2 (en) * | 1990-10-19 | 1993-08-19 | Ems-Inventa Ag, Zuerich, Ch | |
DE19506407A1 (en) * | 1995-02-23 | 1996-08-29 | Polymer Eng Gmbh | Method and device for producing highly viscous or highly stabilized, reaction-stable polyamides and for the continuous demonomerization of polyamides |
DE19841376A1 (en) * | 1998-09-10 | 2000-03-16 | Lurgi Zimmer Ag | Process for feeding additives into a polymer melt stream |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1313592A (en) * | 1970-04-28 | 1973-04-11 | Toray Industries | Method and apparatus of a continuous polymerization |
DE19531989A1 (en) * | 1995-08-30 | 1997-05-15 | Polymer Eng Gmbh | Process for the continuous production of a low-dimer polyamide 6 |
DE19607723C2 (en) * | 1996-02-29 | 2002-10-24 | Polymer Eng Gmbh | Process and device for the continuous extraction of polymeric granules |
-
2001
- 2001-05-29 DE DE2001126133 patent/DE10126133B4/en not_active Expired - Lifetime
-
2002
- 2002-05-17 WO PCT/EP2002/005441 patent/WO2002096975A1/en active Application Filing
- 2002-05-17 RU RU2003137774/04A patent/RU2295545C2/en not_active IP Right Cessation
- 2002-05-17 EP EP02738083A patent/EP1406948A1/en not_active Withdrawn
- 2002-05-17 UA UA20031212941A patent/UA76471C2/en unknown
- 2002-05-17 CN CN 02814690 patent/CN1249125C/en not_active Expired - Fee Related
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2461902A1 (en) * | 1974-12-31 | 1976-07-08 | Zimmer Ag | Removing volatile components from molten polyamides - by subjecting polyamide to turbulent treatment with gas stream at subatmospheric pressure |
DD265151A1 (en) * | 1987-09-30 | 1989-02-22 | Schwarza Chemiefaser | MELTED GASER FOR THE CONTINUOUS POLYMERIZATION OF POLYAMIDE-6 FROM EPSILON-KAPROLAKTAM |
DE4039857C2 (en) * | 1990-10-19 | 1993-08-19 | Ems-Inventa Ag, Zuerich, Ch | |
DE19506407A1 (en) * | 1995-02-23 | 1996-08-29 | Polymer Eng Gmbh | Method and device for producing highly viscous or highly stabilized, reaction-stable polyamides and for the continuous demonomerization of polyamides |
DE19841376A1 (en) * | 1998-09-10 | 2000-03-16 | Lurgi Zimmer Ag | Process for feeding additives into a polymer melt stream |
Also Published As
Publication number | Publication date |
---|---|
WO2002096975A1 (en) | 2002-12-05 |
CN1249125C (en) | 2006-04-05 |
EP1406948A1 (en) | 2004-04-14 |
RU2295545C2 (en) | 2007-03-20 |
DE10126133A1 (en) | 2003-01-02 |
CN1535291A (en) | 2004-10-06 |
UA76471C2 (en) | 2006-08-15 |
RU2003137774A (en) | 2005-05-20 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE10126133B4 (en) | Process and apparatus for the preparation of highly viscous or highly stabilized polycondensates and demonomerized PA 6 | |
DE602004002635T2 (en) | Stirrer, pasteurizer, and cleaning device | |
EP1558796B1 (en) | Device and method for injecting a liquid colour into a polymer melt | |
DE1920994C3 (en) | Bitumen blowing process and device for carrying out the same | |
EP1715764B1 (en) | Method for the diafiltration of a product and device for carrying out said method | |
DD231337A5 (en) | METHOD FOR PRODUCING THE SUSPENSION OF AIRBAGS IN THE WATER AND THE APPARATUS FOR REALIZING THIS METHOD | |
DE102008000432A1 (en) | Rührkesselreaktor and methods for carrying out a polymerization reaction using such a stirred tank reactor | |
EP2007510A1 (en) | Continuous process for performing a chemical reaction in which a gaseous phase is added to a charge stream comprising one or more solid phases which have been dissolved or dispersed in water | |
EP0020946B1 (en) | Continuous process for preparing polycaprolactam, and a device for carrying out the process | |
EP0007653B1 (en) | Liquid dosing and/or distribution device | |
DE908069C (en) | Method and device for the continuous production of high polymer materials, in particular polyamides | |
DE2322792C2 (en) | Device for flotation of a paint water mixture | |
DE2755166A1 (en) | METHOD AND DEVICE FOR THE CONTINUOUS PRODUCTION OF PHOTOGRAPHIC EMULSIONS | |
EP1048342A2 (en) | Mixer for flowable material | |
DE2816522A1 (en) | DEVICE FOR SUPPLYING SOLVED CHEMICALS IN WATER | |
EP0676270A1 (en) | Method and apparatus for the production of a foaming resin | |
DE102006026254A1 (en) | Mixing equipment for molding compound used to produce polymer sheet for further processing, is designed with recirculating pumping line | |
DE3838251C1 (en) | ||
DE2701702A1 (en) | METHOD AND DEVICE FOR GENERATING BUBBLES IN A LIQUID | |
EP2759499A1 (en) | Installation and method for conveying granulate | |
DE2637188C3 (en) | Method and device for the production of foams from plastic | |
EP1011852B1 (en) | Cross-flow filtration device | |
DE102018105678A1 (en) | Plant for the treatment of service water, water aeration unit and process for the treatment of process water | |
DE4236039A1 (en) | Plant for continuous prodn of consistent condensation polymer - circulates mix through tubular heat exchangers, separates most of water, and completes reaction and water removal in secondary similar stage | |
DE916589C (en) | Process and apparatus for the continuous production of linear, fusible high polymers |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
OP8 | Request for examination as to paragraph 44 patent law | ||
8127 | New person/name/address of the applicant |
Owner name: LAUSMANN, PETER, 07407 RUDOLSTADT, DE Owner name: WILTZER, KARL-HEINZ, 07422 BAD BLANKENBURG, DE |
|
8363 | Opposition against the patent | ||
R120 | Application withdrawn or ip right abandoned |
Effective date: 20111019 |