WO1981003144A1 - Procede pour la fabrication de melanges de matieres synthetiques thermoplastiques et de matieres de charge minerales ou organiques, dispositif pour la mise en oeuvre du procede et matiere ainsi fabriquee - Google Patents

Procede pour la fabrication de melanges de matieres synthetiques thermoplastiques et de matieres de charge minerales ou organiques, dispositif pour la mise en oeuvre du procede et matiere ainsi fabriquee Download PDF

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Publication number
WO1981003144A1
WO1981003144A1 PCT/DE1981/000070 DE8100070W WO8103144A1 WO 1981003144 A1 WO1981003144 A1 WO 1981003144A1 DE 8100070 W DE8100070 W DE 8100070W WO 8103144 A1 WO8103144 A1 WO 8103144A1
Authority
WO
WIPO (PCT)
Prior art keywords
reactor
mixing
filler
charging
vacuum
Prior art date
Application number
PCT/DE1981/000070
Other languages
German (de)
English (en)
Inventor
B Wessling
G Baller
H Grigull
W Schoenfelder
Original Assignee
Sapco Systemanalyse & Projektc
B Wessling
G Baller
H Grigull
W Schoenfelder
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sapco Systemanalyse & Projektc, B Wessling, G Baller, H Grigull, W Schoenfelder filed Critical Sapco Systemanalyse & Projektc
Priority to NL8120135A priority Critical patent/NL8120135A/nl
Priority to BR8108590A priority patent/BR8108590A/pt
Publication of WO1981003144A1 publication Critical patent/WO1981003144A1/fr

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J3/00—Processes of treating or compounding macromolecular substances
    • 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
    • B01J2/00—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic
    • B01J2/006—Coating of the granules without description of the process or the device by which the granules are obtained
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/70—Pre-treatment of the materials to be mixed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/05—Stirrers
    • B01F27/11—Stirrers characterised by the configuration of the stirrers
    • B01F27/112—Stirrers characterised by the configuration of the stirrers with arms, paddles, vanes or blades
    • B01F27/1125—Stirrers characterised by the configuration of the stirrers with arms, paddles, vanes or blades with vanes or blades extending parallel or oblique to the stirrer axis
    • B01F27/11253—Stirrers characterised by the configuration of the stirrers with arms, paddles, vanes or blades with vanes or blades extending parallel or oblique to the stirrer axis the blades extending oblique to the stirrer axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F33/00—Other mixers; Mixing plants; Combinations of mixers
    • B01F33/05—Mixers using radiation, e.g. magnetic fields or microwaves to mix the material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F33/00—Other mixers; Mixing plants; Combinations of mixers
    • B01F33/05—Mixers using radiation, e.g. magnetic fields or microwaves to mix the material
    • B01F33/052—Mixers using radiation, e.g. magnetic fields or microwaves to mix the material the energy being electric fields for electrostatically charging of the ingredients or compositions for mixing them
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00—Mixing; Kneading
    • B29B7/74—Mixing; Kneading using other mixers or combinations of mixers, e.g. of dissimilar mixers ; Plant
    • B29B7/7476—Systems, i.e. flow charts or diagrams; Plants
    • B29B7/7485—Systems, i.e. flow charts or diagrams; Plants with consecutive mixers, e.g. with premixing some of the components
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J3/00—Processes of treating or compounding macromolecular substances
    • C08J3/20—Compounding polymers with additives, e.g. colouring
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J3/00—Processes of treating or compounding macromolecular substances
    • C08J3/20—Compounding polymers with additives, e.g. colouring
    • C08J3/203—Solid polymers with solid and/or liquid additives

Definitions

  • the invention relates to a process for the production of mixtures of thermoplastic plastics and mineral or organic fillers, the starting materials to be mixed being mixed under vacuum and thereby being compressed.
  • the invention further relates to a device suitable for this purpose with a coolable vacuum container in which a mixing device is arranged, the supply of starting materials into the vacuum container and the removal of the mixture from the container via the maintenance of the vacuum serving funnels and valves.
  • the invention also relates to a material in the form of a mixture of thermoplastics and mineral or organic fillers.
  • the admixture of mineral or organic fillers to plastics is intended on the one hand to cheapen the raw material and on the other hand to achieve the desired properties of the later product.
  • the particular difficulty here is to provide the foreman of the plastic-filler mixture with a homogeneous, transportable and stable polymer starting material against demixing if no immediate further processing of the mixture is intended.
  • the mixture as raw material for further processing specified strength requirements are sufficient.
  • various approaches have hitherto been followed, which more or less amount to a thermal treatment of the plastic base, which causes the thermoplastic to melt or soften.
  • the components plastic and filler are brought together and mixed by rolling, kneading, plasticizing or extruding. It is known that in order to form correspondingly large adhesive forces between plastic and filler, the pores of both components must be as free as possible from water and air, because with a smaller distance between the molecular chains between plastic and filler, the van der Waal forces increase, which are necessary for one Ensure connection of both components. If any gas or moisture shells that prevent cohesion are to be removed, the compounding is carried out under vacuum in single or twin screw extruders in which the materials are continuously conveyed, mixed and compressed. This requires the use of appropriate funnels with degassing devices for adding components.
  • plastic and filler are added to one another with constant kneading to achieve the desired mixture. Due to the heat generated during the kneading process as a result of the constant friction, which can be further increased by additional heat from the outside, the plastic particles melt and mix with the filler particles. This process is carried out until the filler has been substantially consumed by the mixing, so that no free or unmixed filler remains and the particles of the polymeric material have been used up by melting at least to the desired extent. Depending on the components used, the process must be repeated several times.
  • thermal processes due to their physical mode of action, have the disadvantage that the necessary mechanical systems are associated with high investment and operating costs and often only allow low throughputs.
  • the mixtures produced with it are not homogeneous, ie the proportion of filler in the individual granules varies. This is usually accompanied by poorer properties of the mixture and of the later product due to the weak adhesive forces between the plastic matrix and filler particles.
  • the plastic-filler mixtures tend to be brittle or have a high modulus of elasticity, at the same time with increasing proportion of filler to lower strength.
  • the object of the invention is to provide a process for the production of plastic-filler mixtures which are already homogeneous in the powdered state and which are stable against demixing and can be processed into commercial products even without complex granulation.
  • the materials produced by the method according to the invention should have a significantly higher stiffness, but without the otherwise associated brittleness, and at the same time
  • Another object is to provide a suitable device for performing the method.
  • the filler is subjected to an electrostatic charge. Depending on the type of filler, this charge is over
  • the thickness of the filler shell depends on the desired filler content.
  • the total amount of filler added is bound in the filler shell and does not form its own agglomerates or agglomerations that are separated from the plastic or easily separated from it.
  • the filler shell produced according to the procedure according to the invention is resistant to normal mechanical stress, e.g. B. insensitive to pressure, shock, shear forces or friction.
  • the even shape of the filler shell results in good flowability of the powder, which is desired in further processing.
  • Fig. 1 is a schematic representation of the arrangement of units for charging the Components due to friction and their subsequent mixing
  • Fig. 2 is a schematic representation of the arrangement of units for charging the components in an electrical
  • FIG. 3 shows a schematic diagram of a combined charging and mixing grid
  • FIG. 6 shows the enlargement of a section of the phase boundary in FIG. 5,
  • FIG. 7 shows the enlargement of a section of the phase boundary in FIG. 6,
  • Fig. 8 bar chart with a comparison of mechanical parameters of a commercially available and the material according to the invention. Implementation of the invention in three ways
  • a filler e.g. B. chalk, talc, kaolin or mica with a moisture content of less than 3 wt .-%
  • a filler e.g. B. chalk, talc, kaolin or mica with a moisture content of less than 3 wt .-%
  • the particles are charged electrically, with chalk receiving a negative charge, talc, kaolin and mica a positive charge of several kV each.
  • the loads are particularly stable when the mixture takes place at short-term (e.g. 0.5 s) peak temperatures above 200 ° C, which are caused either by frictional heat or by additional heating.
  • the filler pretreated in this way must then cool down again.
  • the electrostatically charged filler with the desired amount of plastic for. B. 20 to 30 kg of polyethylene, polypropylene or other powdered thermoplastics, placed in an evacuated high-speed mixer.
  • the mass is mixed at a pressure of less than one thousand pascals, whereby a certain maximum temperature must not be exceeded, which is to be regarded as an indicator of the friction that has occurred and thus of the extent to which the filler and plastic are separated.
  • This maximum temperature is lower than the softening temperature of the plastic and its amount depends both on the combination of plastic and filler used and on their quantity ratio, for example according to the following table:
  • the plastic-filler mixture now available is either stored in powder form, granulated in an extruder on request or if necessary, or fed directly to processing to an end product. Granulation and processing must be carried out under vacuum so that the intensive wetting of the filler by the thermoplastics is not impeded by the air layers adsorbed in caves or niche-like irregularities of the rough surface of the casing or bubbles enclosed there. and the adhesive forces can have a beneficial effect.
  • the attractive forces caused by the electrical charging lead to significantly better properties of the filled thermoplastics, in particular to good impact strength with a low modulus of elasticity.
  • a device as shown in FIG. 1 is suitable for carrying out the method according to Example I.
  • This device contains a combined charging and mixing reactor 10 with two feed hoppers 11, 12.
  • the bottom of the reactor 10 has two outlets 13, 14, of which the outlet 14 is connected to a coolable intermediate volume 15, from which a line 16 to a cooling reactor 17 leads.
  • a line 18 is laid back from the cooling reactor 17 to the combined charging and mixing reactor 10.
  • the combined charging and mixing reactor 10 consists of a reactor body 19 and a cover 20 which is electrically insulated from the reactor body 19, preferably by means of a layer 21 made of polytetrafluoroethylene.
  • the reactor 10 is connected to a vacuum pump 22 via its cover 20.
  • a pressure indicator 23 is provided on the cover 20.
  • the cover 20 of the reactor 10 is connected to a high-voltage generator 24, which can supply voltages from 0 to 10 kV and can be regulated continuously.
  • the reactor body 19 is grounded via an earthing line 25, to which the mixer 26 located in the reactor body 19 is also connected.
  • the earthing of the Raaktor body including the mixer can be interrupted by a switch 27.
  • the reactor body 19 is equipped with a temperature sensor 28 and a charge meter 29. Cooling coils 30 are arranged in a ring around the outside of the reactor body 19.
  • the feed funnels 11, 12 are also connected to the vacuum pump 22 and each provided with a pressure indicator 31, 32. Both funnels are each connected to the reactor 10 via vacuum-tight closing members 33, 34.
  • a line 35 leads from the outlet 14 of the combined charging and mixing reactor 10 to the coolable intermediate volume 15, which is connected to a vacuum pump 36 and has a pressure indicator 37.
  • the intermediate volume is surrounded on the outside by annular coolant lines 38.
  • Coolable intermediate volume 15 and cooling reactor 17 are connected to one another via line 16.
  • the cooling reactor 17 is also connected to the vacuum pump 36 and has a pressure indicator 39.
  • the cooling reactor consists of a cooling reactor body 40 with a lid 41, the cooling reactor body 40 being provided on the inside with a non-conductive layer 42, preferably made of polytetrafluoroethylene.
  • Ring-shaped coolant lines 43 are arranged on the outside around the cooling reactor body 40. Inside there is an upstanding shaft 44, on which three stirring arms 45 are attached, between which individual stirring arms are still scrapers 46.
  • a batch of filler e.g. B. 30 kg of chalk or similar mineral is fed via the evacuated funnel 11 and the product slide 33 into the combined charging and mixing reactor 10.
  • the filler is mixed intensively by a high-speed mixer 26, the filler heating up and electrically charging.
  • the charge is constantly checked via the temperature sensor 28 and the charge meter 29. So that no layer of the filler to be charged is deposited on the cover of the reactor 10, the latter is in turn electrically charged by the high-voltage generator 24 from a temperature of the filler of 70 to 80 ° C., and z with an opposite sign to the charge of the filler.
  • the reactor body 19 and mixer 26 are grounded, and if necessary, the grounding can be interrupted via the switch 27 during the charging process, so that constant potentials can be built up.
  • the filler If the filler is sufficiently charged, it is conveyed through the outlet 14 via the line 35 into the coolable intermediate volume 15. There, the filler is cooled by water flowing in the cooling coils 38 before it is conveyed further via the line 16 into the cooling reactor 17. During this cooling process, the reactor 10 is cooled by cooling water which flows in the cooling coils 30 to the extent that a new one
  • filler can be added to the reactor 10 via the funnel 11.
  • the cooling reactor 17 has four times the volume of the reactor 10, so that four batches of filler can be cooled and stored in it. This is useful because it takes less time to charge the filler than it cools down and the subsequent mixing of filler and plastic.
  • the cooling reactor 17 If the cooling reactor 17 is filled, then the first batch of filler located at the bottom has cooled down to such an extent that part of it can be returned to the reactor 10 via the line 18 and the funnel 11. At the same time, a corresponding amount of plastic is introduced into the reactor 10 via the funnel 12.
  • an intensive mixing of plastic and filler takes place.
  • the temperature is constantly monitored by the temperature sensor 28. If there is sufficient charge separation during mixing, the mixing process is ended.
  • the finished powdery compound can now either be fed to a package via the outlet 13 or to a granulating extruder or another processing machine.
  • the filler or, if necessary, the plastic can also be charged by exposing the particles to a correspondingly strong electric field.
  • a correspondingly high voltage is applied between the agitator and the outer wall of a reactor designed for this purpose.
  • the design of the agitator as a grid with attached tips is particularly advantageous, since the so-called tip removal Charge even small voltages are sufficient to generate a strong electric field locally. The direction is therefore comparable to a capacitor, the initially electrically neutral solid-state components acting as a dielectric.
  • the agitator grille and outer wall must be reversed accordingly.
  • a strong electric field with lattice tips as a (positive) anode releases electrons from the component molecules, which leads to an electron deficit, i.e. positive charging.
  • the amount of charge introduced is checked via the level of the voltage and the duration of the process.
  • a uniform charge distribution is produced by constant, slow circulation of the material by rotating the agitator grid.
  • Example II After charging, the components enter a mixing reactor and are there in the same way as in Example I executed, mixed and then used for further use.
  • the charging in an electrical field described above in Example II has the advantage that cooling, in particular of the filler, is no longer necessary after charging. This saves the extensive machinery for cooling the material and returning it to the mixing reactor. Furthermore, the charging process can be better controlled as a result of the selectable polarity and amount of charge, and thus a particularly good coating of the plastic grain can be achieved due to the attractive forces thus caused when the plastic and filler are mixed.
  • the charging of the components in an electrical field can be carried out in a device as shown schematically in FIGS. 2 and 3.
  • reactor 50 On a vacuum container 49, two reactors 50, 51 of identical design for the electric charge are placed, only one of the two reactors being described below.
  • the reactor 50 is powered by a vacuum pump
  • the reactor 53 is controllable.
  • the reactor has a reactor body 54 and a reactor cover 55 which is electrically insulated from the body 54.
  • the reactor body 54 is in its
  • a stirrer cylinder 57 which consists of an electrically insulating material and a conductive core 58, is introduced into the reactor cover 55 in a vacuum-tight and electrically insulated manner.
  • the agitator cylinder 57 only extends approximately to Half of the reactor body 54.
  • the conductive core 58 of the agitator cylinder has a connection to an agitator 59 which is designed as a two-armed grating 59a, in which the opposing grating surfaces are each 30 ° from the
  • Short points 59b made of conductive material are attached to the intersection points of the individual grid bars forming the grid 59a perpendicular to the grid plane, only on the upper side of the grid 59a tilted by 30 ° and pointing in the direction of rotation of the grid.
  • a voltage between 0 and 100 kV is applied to the conductive core 58 and the outer wall 60 of the reactor body 54, which is produced by a conductive material and is generated by a continuously variable high-voltage generator 61.
  • the voltage is transferred to the rotating conductive core 58 by means of a grinding electrode 62.
  • the reactor 50 is also provided with a vacuum-tight feed lock 63 and an outlet 64, the latter being connected to the vacuum-tight slide valve 33 of the "vacuum container 49.
  • This vacuum container 49 is otherwise designed with all of its components in the same way as the mixing reactor in the example I.
  • the coolable intermediate volume and the cooling reactor, which are not required in the process described, are missing here.
  • a batch of the required filler is fed into the reactor 50 via the vacuum-tight material lock 63.
  • the filler is constantly changed by the agitator 59 moves and moves. Between the agitator 59 and the outer wall 60 made of conductive material there is a voltage of approximately 80 kV, which is generated by the high-voltage generator 61.
  • the polarity of the two conductive components, the agitator and the outer wall depends on the desired charge polarity of the filler.
  • Under vacuum the filler remains in the reactor while the agitator is constantly rotating until all the particles have reached the desired charge.
  • the filler is then discharged into the vacuum container 49 via the outlet 64 and the vacuum-tight product slide 33. At the same time, an equivalent amount of plastic is placed in the vacuum container 49 via the product slide 34, wherein the plastic can also be electrically charged.
  • a charge separation takes place in the vacuum container 49 by rapidly mixing the two components in the same way as described in Example I, so that the desired compound is formed due to the electrostatic attractive forces.
  • the device shown in FIG. 4 is set up for a continuous production process.
  • the charging of the components must be carried out in an electric field using the procedure described in Example II, since cooling and thus intermediate storage of the components can then be dispensed with.
  • the device for the continuous production of a plastic-filler mixture according to FIG. 4 consists of a mixing column 65, on which two charging reactors 50, 51 are placed, which corresponded to the reactors described in Example II, so that the components charged therein via the locks 66 , 67 get into the mixing column 65.
  • the mixing column 65 is connected to a vacuum pump 68.
  • the pressure in the mixing column is controlled by a pressure indicator 69.
  • the mixing column 65 is designed as a cylinder 70, which in a funnel-shaped cone tapering downwards
  • the inner wall of the cylindrical part 70 of the mixing column 65 is provided with grooves 72 rising upward in a spiral.
  • a total of three rotors 74 are arranged on a vertical drive shaft 73, one of which has a small diameter in the tip of the cone 71, while the other two have a correspondingly larger diameter at the lower end of the cylindrical part 70 of the mixing column 65 are attached.
  • the direction of rotation of the rotors 74 is chosen so that the material is conveyed upwards in the ascending spiral.
  • there is an outlet 75 at the base of the cone 71 which is connected to a device 76 for further processing of the plastic-filler mixture, preferably an extruder.
  • the total residence time in the mixing column 65 should be at least five minutes.
  • FIG. 5 shows an enlarged photo of an individual particle 80 of a plastic / filler mixture, which was produced according to one of the process examples described above.
  • the particle 80 is cut open and opened, so that an insight into the structure of the particle with plastic core 81 and filler sleeve 82 can be obtained.
  • the sharp dividing line 83 between the plastic core 81 and filler casing 82 is clearly recognizable.
  • the filler particles have therefore not penetrated the plastic core or the plastic core has not melted or melted and has not mixed with the filler. This can be seen even more clearly in FIGS. 6 and 7, which show a section of the dividing line 83 between the plastic core 81 and the filler shell 82 in two different, greatly enlarged scanning electron microscope images.
  • There are no components of plastic 85 between the individual filler particles 84 as would be the case in a sintering or gelling process between plastic and filler.
  • the adhesion between plastic and filler is only due to the attractive forces caused by the opposite electrical charges.
  • the plastic-filler mixture produced by the process according to the invention is stable in powder form against segregation. Typically, the mixture is either granulated if the customer so desires, or directly processed into a final product. It is of particular advantage that the end products, in contrast to the process described in the "prior art" section (DE-OS 23 34 189), can be subsequently dyed, which is particularly advantageous for fibers made from the material according to the invention.
  • the adhesive forces between plastic and filler caused by the electrical charging of the components also result in significantly better material properties of the filled thermoplastics, which are not achieved by plastic-filler mixtures produced according to the prior art. This shows the comparison of the mechanical characteristic values from FIG.

Abstract

Dans un procede pour la fabrication de melanges de matieres synthetiques thermoplastiques et de matieres de charge minerales ou organiques, les matieres sont melangees sous vide et comprimees. Selon l'invention, les melanges de matieres synthetiques et de matieres de charge sont deja homogenes dans un etat pulverulent. Ils sont aussi resistants sans granulation a la desagregation, stables et faconnables en produits. En outre, la rigidite doit etre manifestement elevee mais sans fragilite. Les valeurs de la resistance doivent approcher celles de la matiere synthetique pure. Finalement, les avantages commerciaux doivent etre atteints. A ces fins, les matieres de charge doivent etre chargees electriquement ou electrostatiquement avant et/ou pendant le melange avec les matieres synthetiques. Dans une variante, cela peut aussi etre realise avec les matieres synthetiques et meme, par exemple, par un brassage continu dans un champ electrique. La charge reste stable pendant une longue periode ce qui permet un traitement prealable et un entreposage de la matiere de charge separes de l'operation de melange. Un reacteur combine de charge et de melange, avec une installation (57) pour produire un broyage energique du contenu, fait aussi partie de l'invention.
PCT/DE1981/000070 1980-05-09 1981-05-07 Procede pour la fabrication de melanges de matieres synthetiques thermoplastiques et de matieres de charge minerales ou organiques, dispositif pour la mise en oeuvre du procede et matiere ainsi fabriquee WO1981003144A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
NL8120135A NL8120135A (fr) 1980-05-09 1981-05-07
BR8108590A BR8108590A (pt) 1980-05-09 1981-05-07 Processo para a preparacao de misturas de materias plasticas e substancias de enchimento minerais ou organicas bem como dispositivo para a execucao do processo e material assim preparado

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3017752A DE3017752C2 (de) 1980-05-09 1980-05-09 Verfahren und Vorrichtung zur Herstellung eines pulverförmigen Gemisches aus thermoplastischem Kunststoff und mineralischem oder organischem Füllstoff
DE3017752 1980-05-09

Publications (1)

Publication Number Publication Date
WO1981003144A1 true WO1981003144A1 (fr) 1981-11-12

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PCT/DE1981/000070 WO1981003144A1 (fr) 1980-05-09 1981-05-07 Procede pour la fabrication de melanges de matieres synthetiques thermoplastiques et de matieres de charge minerales ou organiques, dispositif pour la mise en oeuvre du procede et matiere ainsi fabriquee

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JP (1) JPS57500552A (fr)
KR (2) KR850000530B1 (fr)
AR (1) AR225809A1 (fr)
BE (1) BE888734A (fr)
BR (1) BR8108590A (fr)
DD (1) DD158526A5 (fr)
DE (1) DE3017752C2 (fr)
ES (1) ES502035A0 (fr)
FR (1) FR2481991A1 (fr)
GB (1) GB2075353B (fr)
GR (1) GR74899B (fr)
HU (1) HU182749B (fr)
IT (1) IT1138770B (fr)
NL (1) NL8120135A (fr)
RO (1) RO86050B (fr)
SE (1) SE8200079L (fr)
WO (1) WO1981003144A1 (fr)
ZA (1) ZA813026B (fr)

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US5463524A (en) * 1989-08-10 1995-10-31 Commonwealth Scientific And Industrial Research Organisation Producing electrosuspensions
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DE60316275T2 (de) * 2003-07-17 2008-06-12 Borealis Technology Oy Extrusionsverfahren zur Herstellung von gefüllten Thermoplasten
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DE1932536A1 (de) * 1969-06-23 1971-01-21 Arkana Anst Techn & Handel Verfahren zur Herstellung eines Pulvers zur Oberflaechenbeschichtung
CH560560A5 (fr) * 1971-06-03 1975-04-15 Boulton Ltd William
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ITBZ20130003A1 (it) * 2013-01-09 2014-07-10 Unidea Srl Con Socio Unico Procedimento ed attrezzatura per la preparazione di impasti
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ES8202504A1 (es) 1982-02-16
KR850000531B1 (ko) 1985-04-17
DD158526A5 (de) 1983-01-19
DE3017752C2 (de) 1984-08-23
IT1138770B (it) 1986-09-17
GB2075353A (en) 1981-11-18
AR225809A1 (es) 1982-04-30
KR850000530B1 (en) 1985-04-17
DE3017752A1 (de) 1981-11-19
ZA813026B (en) 1982-08-25
SE8200079L (sv) 1982-01-08
GR74899B (fr) 1984-07-12
FR2481991A1 (fr) 1981-11-13
GB2075353B (en) 1984-07-25
RO86050A (fr) 1985-01-24
HU182749B (en) 1984-03-28
ES502035A0 (es) 1982-02-16
RO86050B (ro) 1985-01-31
KR830006378A (ko) 1983-09-24
KR850001468A (ko) 1985-03-18
NL8120135A (fr) 1982-04-01
IT8121589A0 (it) 1981-05-08
BE888734A (fr) 1981-08-28
BR8108590A (pt) 1982-04-06
JPS57500552A (fr) 1982-04-01

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