WO1981000259A1 - Procede et dispositif pour la fabrication en continu de polymethanes - Google Patents
Procede et dispositif pour la fabrication en continu de polymethanes Download PDFInfo
- Publication number
- WO1981000259A1 WO1981000259A1 PCT/CH1980/000086 CH8000086W WO8100259A1 WO 1981000259 A1 WO1981000259 A1 WO 1981000259A1 CH 8000086 W CH8000086 W CH 8000086W WO 8100259 A1 WO8100259 A1 WO 8100259A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- kneading
- screw
- mixing
- endless screw
- reaction
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 15
- 238000010924 continuous production Methods 0.000 title claims abstract description 6
- 230000008569 process Effects 0.000 title abstract description 7
- 238000004898 kneading Methods 0.000 claims description 23
- 238000006243 chemical reaction Methods 0.000 claims description 22
- 238000002156 mixing Methods 0.000 claims description 15
- 229920002635 polyurethane Polymers 0.000 claims description 10
- 239000004814 polyurethane Substances 0.000 claims description 10
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 229920000642 polymer Polymers 0.000 claims description 5
- 238000005520 cutting process Methods 0.000 claims description 2
- 238000012545 processing Methods 0.000 claims description 2
- 238000007493 shaping process Methods 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 3
- 239000008187 granular material Substances 0.000 abstract description 2
- 238000012546 transfer Methods 0.000 abstract description 2
- 238000010276 construction Methods 0.000 abstract 1
- 238000005469 granulation Methods 0.000 abstract 1
- 230000003179 granulation Effects 0.000 abstract 1
- 238000003754 machining Methods 0.000 abstract 1
- 238000003825 pressing Methods 0.000 abstract 1
- WERYXYBDKMZEQL-UHFFFAOYSA-N butane-1,4-diol Chemical compound OCCCCO WERYXYBDKMZEQL-UHFFFAOYSA-N 0.000 description 6
- 239000000047 product Substances 0.000 description 6
- 239000004970 Chain extender Substances 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- 229920005862 polyol Polymers 0.000 description 5
- 150000003077 polyols Chemical class 0.000 description 5
- KKEBXNMGHUCPEZ-UHFFFAOYSA-N 4-phenyl-1-(2-sulfanylethyl)imidazolidin-2-one Chemical compound N1C(=O)N(CCS)CC1C1=CC=CC=C1 KKEBXNMGHUCPEZ-UHFFFAOYSA-N 0.000 description 4
- 125000005442 diisocyanate group Chemical group 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000012948 isocyanate Substances 0.000 description 4
- 150000002513 isocyanates Chemical class 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 239000007795 chemical reaction product Substances 0.000 description 3
- 238000007872 degassing Methods 0.000 description 3
- 239000000155 melt Substances 0.000 description 3
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 239000002826 coolant Substances 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000004132 cross linking Methods 0.000 description 2
- 150000002009 diols Chemical class 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000009472 formulation Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 235000015110 jellies Nutrition 0.000 description 2
- 239000008274 jelly Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- 239000004606 Fillers/Extenders Substances 0.000 description 1
- 241000237858 Gastropoda Species 0.000 description 1
- 241000242583 Scyphozoa Species 0.000 description 1
- 238000012644 addition polymerization Methods 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- CDQSJQSWAWPGKG-UHFFFAOYSA-N butane-1,1-diol Chemical compound CCCC(O)O CDQSJQSWAWPGKG-UHFFFAOYSA-N 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000000265 homogenisation Methods 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920005903 polyol mixture Polymers 0.000 description 1
- 239000000256 polyoxyethylene sorbitan monolaurate Substances 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/08—Processes
- C08G18/0895—Manufacture of polymers by continuous processes
-
- 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
- B01J19/18—Stationary reactors having moving elements inside
- B01J19/20—Stationary reactors having moving elements inside in the form of helices, e.g. screw reactors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/375—Plasticisers, homogenisers or feeders comprising two or more stages
- B29C48/38—Plasticisers, homogenisers or feeders comprising two or more stages using two or more serially arranged screws in the same barrel
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/05—Filamentary, e.g. strands
Definitions
- the present invention relates to a method and a device according to the preceding claims. This is intended to avoid an untargeted crosslinking of the individual components during the addition polymerization, as a result of which the material properties would be adversely affected and incorrectly polymerized, jelly particles could also occur.
- Recipes, types of manufacture and use of polyurethanes are known from publications, for example from the plastics handbook. Volume VII, Vieweg-Höchtlen, Carl-Hanser Verlag. However, these • deal primarily with batch production using the casting process or on mixing rolling mills.
- a short-chain diol is added as a so-called chain extender to the reaction between the long-chain bi-functional polyol and isocyanate
- chain extender preferably an diol, for example 1,4-butanediol
- the distribution of the soft and hard segments in the chains is not carried out in the desired manner, and in extreme cases this can even lead to the formation of linear non-elastic polyurethanes if large amounts of the diisocyanate are consumed in the reaction with butanediol alone.
- the inventive method and the device for this have the features listed in the characterizing part of claims 1 and 2.
- the object of the invention was to overcome the difficulties and disadvantages described above and describes a successful process in which the individual reaction components are separated into the screw housing of a single-shaft mixing and kneading machine, as described, for example, in DE PS 20 56 611 has been described, injected. f OMPI - 3 -
- This mixing and kneading machine has an intensive mixing effect, both in the axial and in the radial direction, with clear backmixing between the individual kneading stages, which represent a progressive reactor cascade.
- This mixing effect is caused by the interaction of the individual worm wings and the knuckle teeth.
- the reaction progresses gradually in individual sections of the snail shell with a smooth transition.
- the individual reaction components can be adjusted individually or partially with reaction adaptation. premixed or even pre-reacted injected.
- fillers, extenders, colorants and auxiliaries can be added and kneaded homogeneously during or after the reaction.
- the melt is preferably discharged through a thread nozzle into a cooling bath and then granulated.
- Fig. 2 shows three different kneading chicanes, which in the
- Inner wall of the housing of the mixing and kneading machine can be used / ÜRE-AT? "
- OMPI Fig. 3 shows the mixing and kneading machine in side view
- Fig. 4 is a front view of the flanged Trans ferschnecke.
- the shaft of the mixing and kneading machine 16 is driven by the motor 1 by means of V-belts 15 and the gear 14.
- the housing of the machine 16 is equipped with kneading chicanes over its entire length without an inlet connection. Kneading teeth 27 can be used, which are secured against rotation with the pin 28 in the housing wall, or kneading bolts 25, 26.
- the machine is equipped with 126 bolts 26 and three bolts 25; the latter are pierced and are used to inject the reaction components.
- the bolts 25 can be used in any A number and at optimally chosen points instead of the bolts 26.
- the individual bolts form a cascade of 129 intermeshing processing chambers in the known To interact with the rotating and simultaneously reciprocating screw blades.
- the product is mixed intensively, kneaded and divided by the screw wing edge. A smaller part is pushed back into the previous chamber, the larger part is pushed into the next subsequent chamber.
- the edges of the screw blades brush the inside wall of the housing and past the bolt, which in turn wipes the screw blades, so that the process is self-cleaning
- the reactants an isocyanate 6, a polyol 7, which can be an unbranched or slightly branched polyester mixture, and a so-called chain extender are preheated in the boilers 9 provided with a heating jacket.
- the individual components are pumped by means of metering pumps 17 through heated pipelines 18 to the mixing and kneading machine 16 and injected through the bolts 25 into the kneading chambers.
- the kneader housing has a length of 12 L / D from the first injection point.
- the average residence time of the components when passing through the 129 kneading cascades is 3-4 minutes. Due to the inclination of the screw blades, the excellent longitudinal and transverse mixing effect with partial recirculation is overlaid by a dominant plug flow in the exit direction, which means that the residence time can be shortened by increasing the speed.
- Kneader housing and shaft can be heated or cooled, which enables the temperature of the strongly exothermic reaction to be controlled.
- the mixture of the isocyanate with the polyol begins at 1 after one L / D length and is continued until close to 3 at three L / D lengths; the reaction already begins.
- the chain extender is now added and takes part in the reaction, which is already quite advanced shortly after 5 at five L / D.
- the material is processed over a further seven L / D lengths in order to mature the reaction at a temperature.
- the resulting highly viscous melt is then ejected into a short transfer screw 19 with drive 20.
- the screw conveyor 19 builds up a uniform delivery pressure in order to push the melt through a right-angled thread nozzle 21 into a water bath 22.
- the threads drawn through the water bath are then cut into a granulator 23.
- degassing the melt can be advantageous.
- a degassing nozzle 24 is provided on the kneader housing, which is closed by an insert when not in use.
- OMPI still had a medium viscosity.
- the liquid di- isoc.yanate was injected through a kneading pin, the ratio between the premix and the diisocyanate was kept at approx. 2.4: 1.
- the worm shaft and the three separately heatable housing zones were heated to 178 ° C. After the onset of the reaction, the product temperature rose briefly to 182 ° C. and then decreased again.
- the screw speed in the reaction kneader was 85 rpm and was tempered to 70 ° C., so that the viscous product could be knocked off hot immediately after leaving the multi-hole nozzle plate and quickly cooled in a conveying air stream.
- a polyurethane was continuously prepared from three individual metered components.
- the drilled kneading pins were inserted into the reactor housing as follows in accordance with the recipe.
- a long-chain polyol mixture with a relative molecular weight of about 16O0 to 50 ° C was premelted and injected into the reactor at zero D.
- the three zones of the reactor housing were tempered at 120 ° C., then 100 ° C. and 60 ° C., the screw shaft at 100 ° C.
- the production temperature jumped to 120 ° C and then at 4 D to 140 ° C, before slowly falling again.
- the screw speed was kept at 40 rpm and 4.2 kg / h of product was produced.
- the method disclosed above offers numerous advantages; For example, the installation of pierced kneading pins at freely selected locations, which can be found on the circumference or length of the reactor housing, enables a very good adaptation to the known recipes. This also makes it possible to shorten the length of the reaction zones.
- the large number of successive reactor stages in a cascade brings about thorough mixing and advantageous homogenization of the reaction.
- the speed and the shear rate in the kneading reactor can be selected so that the reaction product is not overheated and thermally damaged.
- the worm shaft consists of a shaft core with slid-on screw wing bushes, which are interchangeable.
- the screw wing geometry can . be selected so that the speed can be regulated independently of the throughput, and the reactor remains filled.
- the reaction products in granular form have the same excellent properties as could previously only be achieved using the pouring method; they are free of jellyfish or nodules.
- the reactor can also be used at high temperatures without modification.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Mechanical Engineering (AREA)
- Polyurethanes Or Polyureas (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Abstract
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH652879 | 1979-07-13 | ||
CH6528/79 | 1979-07-13 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1981000259A1 true WO1981000259A1 (fr) | 1981-02-05 |
Family
ID=4311014
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/CH1980/000086 WO1981000259A1 (fr) | 1979-07-13 | 1980-07-14 | Procede et dispositif pour la fabrication en continu de polymethanes |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0032142A1 (fr) |
BE (1) | BE884296A (fr) |
DE (1) | DE3049740D2 (fr) |
IT (1) | IT1132527B (fr) |
WO (1) | WO1981000259A1 (fr) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2678627A1 (fr) * | 1991-07-04 | 1993-01-08 | Hennecke Gmbh Maschf | Procede de fabrication de polyurethannes elastomeriques, en particulier sous forme de semelles de chaussures. |
EP1110691A2 (fr) * | 1999-12-21 | 2001-06-27 | General Electric Company | Mélange de compositions de silicone chargé |
EP1110696A2 (fr) * | 1999-12-21 | 2001-06-27 | General Electric Company | Procédé continu de préparation de compositions silicone |
WO2002011975A1 (fr) * | 2000-08-03 | 2002-02-14 | Ranier Limited | Production d'un polyurethanne de precision |
US6417312B1 (en) | 1995-06-07 | 2002-07-09 | Bayer Aktiengesellschaft | Thermoplastic polyurethane elastomers |
DE102006038197A1 (de) * | 2006-08-16 | 2008-02-21 | Kraussmaffei Technologies Gmbh | Vorrichtung und Verfahren zur Verarbeitung von Duroplasten |
WO2017032615A1 (fr) * | 2015-08-26 | 2017-03-02 | Kraussmaffei Technologies Gmbh | Procédé de moulage par injection d'un mélange à base de résine réactive et machine correspondante |
DE102010025995B4 (de) | 2010-07-04 | 2023-01-26 | Entex Rust & Mitschke Gmbh | Herstellung thermoplastischer Polyurethane in einem Extruder |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1401613A (fr) * | 1963-06-17 | 1965-06-04 | Celanese Corp | Appareil à cisailler et à mélanger des matières |
FR2072814A5 (fr) * | 1969-12-03 | 1971-09-24 | Upjohn Co | |
FR2214719A1 (fr) * | 1973-01-19 | 1974-08-19 | Bayer Ag | |
DE2549372A1 (de) * | 1975-11-04 | 1977-05-05 | Bayer Ag | Verfahren zur kontinuierlichen herstellung von polyurethanen |
-
1980
- 1980-07-11 IT IT23403/80A patent/IT1132527B/it active
- 1980-07-14 WO PCT/CH1980/000086 patent/WO1981000259A1/fr not_active Application Discontinuation
- 1980-07-14 DE DE80CH8000086T patent/DE3049740D2/de not_active Expired
- 1980-07-14 BE BE2/58647A patent/BE884296A/fr not_active IP Right Cessation
-
1981
- 1981-02-09 EP EP80901230A patent/EP0032142A1/fr not_active Withdrawn
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1401613A (fr) * | 1963-06-17 | 1965-06-04 | Celanese Corp | Appareil à cisailler et à mélanger des matières |
FR2072814A5 (fr) * | 1969-12-03 | 1971-09-24 | Upjohn Co | |
FR2214719A1 (fr) * | 1973-01-19 | 1974-08-19 | Bayer Ag | |
DE2549372A1 (de) * | 1975-11-04 | 1977-05-05 | Bayer Ag | Verfahren zur kontinuierlichen herstellung von polyurethanen |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2678627A1 (fr) * | 1991-07-04 | 1993-01-08 | Hennecke Gmbh Maschf | Procede de fabrication de polyurethannes elastomeriques, en particulier sous forme de semelles de chaussures. |
US6417312B1 (en) | 1995-06-07 | 2002-07-09 | Bayer Aktiengesellschaft | Thermoplastic polyurethane elastomers |
EP1110691A2 (fr) * | 1999-12-21 | 2001-06-27 | General Electric Company | Mélange de compositions de silicone chargé |
EP1110696A2 (fr) * | 1999-12-21 | 2001-06-27 | General Electric Company | Procédé continu de préparation de compositions silicone |
EP1110696A3 (fr) * | 1999-12-21 | 2001-11-21 | General Electric Company | Procédé continu de préparation de compositions silicone |
EP1110691A3 (fr) * | 1999-12-21 | 2002-03-20 | General Electric Company | Mélange de compositions de silicone chargé |
WO2002011975A1 (fr) * | 2000-08-03 | 2002-02-14 | Ranier Limited | Production d'un polyurethanne de precision |
EP1935622A1 (fr) * | 2000-08-03 | 2008-06-25 | Ranier Limited | Fabrication précise de polyuréthane |
US8784712B2 (en) | 2000-08-03 | 2014-07-22 | Ranier Limited | Precision polyurethane manufacture |
DE102006038197A1 (de) * | 2006-08-16 | 2008-02-21 | Kraussmaffei Technologies Gmbh | Vorrichtung und Verfahren zur Verarbeitung von Duroplasten |
DE102010025995B4 (de) | 2010-07-04 | 2023-01-26 | Entex Rust & Mitschke Gmbh | Herstellung thermoplastischer Polyurethane in einem Extruder |
WO2017032615A1 (fr) * | 2015-08-26 | 2017-03-02 | Kraussmaffei Technologies Gmbh | Procédé de moulage par injection d'un mélange à base de résine réactive et machine correspondante |
Also Published As
Publication number | Publication date |
---|---|
BE884296A (fr) | 1980-11-03 |
IT8023403A0 (it) | 1980-07-11 |
EP0032142A1 (fr) | 1981-07-22 |
DE3049740D2 (en) | 1982-02-11 |
IT1132527B (it) | 1986-07-02 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0490056B1 (fr) | Procédé et dispositif pour la fabrication continue et directe d'un mélange à base de caoutchouc et d'un mélange fini de caoutchouc pour pneumatiques de véhicules, pour courroies de transmission, pour bandes de transport ainsi que pour des articles techniques en caoutchouc dans un seule installation de mélange | |
DE2302564C3 (de) | Verfahren zur Herstellung von Polyurethan-Elastomeren | |
EP1441885B1 (fr) | Procede et dispositif pour augmenter la viscosite limite de polyester | |
EP1846465B1 (fr) | Procede pour produire en continu des elastomeres de polyurethanne thermoplastiques | |
EP0004937B2 (fr) | Procédé de préparation d'élastomères de polyuréthanes thermoplastiques | |
DE2059570A1 (de) | Kontinuierliches Einschritt-Herstellungsverfahren fuer ein thermoplastisches,unporiges Polyurethan | |
DE2727486C2 (de) | Verfahren zur Herstellung von thermoplastischen Formmassen | |
EP2900358B1 (fr) | Mélangeur-pétrisseur de mise en oeuvre des procédés mécaniques, chimiques et/ou thermiques | |
EP1127609B1 (fr) | Procédé pour le traitement d'un produit dans au moins un mélangeur-pétrisseur | |
DE2423764C3 (de) | Verfahren zur kontinuierlichen Herstellung von elastomeren Polyurethanharnstoffen | |
WO1981000259A1 (fr) | Procede et dispositif pour la fabrication en continu de polymethanes | |
DE2549372C2 (de) | Verfahren zur kontinuierlichen Herstellung von Polyurethan-Elastomeren | |
EP2716690A1 (fr) | Procédé de fabrication d'une masse organique ou anorganique pâteuse à l'état fondu | |
DE102004014165A1 (de) | Verfahren und Vorrichtung zur Herstellung von Recyclat-Polyolen aus Polyurethanen | |
EP2464763B1 (fr) | Procédé de traitement d'un monomère, pré-polymère, polymère ou d'un mélange correspondant | |
EP3934878B1 (fr) | Procédé et installation de production d'acide polylactique à partir d'un mélange de lactides par polymérisation | |
DE2610980B2 (de) | Verfahren zur kontinuierlichen herstellung von thermoplastischen polyurethan-elastomeren | |
EP0988338A1 (fr) | Procede de production de pvc souple | |
DE2357568C2 (fr) | ||
EP1417998B1 (fr) | Procédé pour mélanger des matériaux solides et liquides dans un dispositif mélangeur, utilisation du procédé et dispositif mélangeur | |
DE1944897A1 (de) | Verfahren und Einrichtung zur Aufbereitung von Polyadditionsharz-Zwischenprodukten | |
DE3729237C1 (en) | Process for the continuous production of rubber compounds and other filler-containing, polymer-based compounds and device for carrying out the process | |
DE102016218216B4 (de) | Verfahren zur Herstellung großer Duromerteile | |
DD141975A3 (de) | Verfahren und vorrichtung zur kontinuierlichen herstellung von polyurethanprodukten | |
DD206672A3 (de) | Verfahren und vorrichtung zur herstellung von lagerungsstabilen polyurethanprodukten |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Designated state(s): DE JP US |
|
AL | Designated countries for regional patents |
Designated state(s): FR GB LU NL |
|
WWE | Wipo information: entry into national phase |
Ref document number: 1980901230 Country of ref document: EP |
|
WWP | Wipo information: published in national office |
Ref document number: 1980901230 Country of ref document: EP |
|
REF | Corresponds to |
Ref document number: 3049740 Country of ref document: DE Date of ref document: 19820211 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 3049740 Country of ref document: DE |
|
WWW | Wipo information: withdrawn in national office |
Ref document number: 1980901230 Country of ref document: EP |