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1. WO2011116759 - METHOD FOR PRODUCING MODIFIED PLASTICS HAVING REDUCED CHAIN LENGTHS AND COMPOSITIONS THAT CAN BE PRODUCED THEREWITH

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Publication Number WO/2011/116759
Publication Date 29.09.2011
International Application No. PCT/DE2011/000323
International Filing Date 24.03.2011
IPC
C08F 8/50 2006.1
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
FMACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
8Chemical modification by after-treatment
50Partial depolymerisation
C08J 11/10 2006.1
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H142
11Recovery or working-up of waste materials
04of polymers
10by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation
B60H 1/00 2006.1
BPERFORMING OPERATIONS; TRANSPORTING
60VEHICLES IN GENERAL
HARRANGEMENTS OR ADAPTATIONS OF HEATING, COOLING, VENTILATING, OR OTHER AIR-TREATING DEVICES SPECIALLY FOR PASSENGER OR GOODS SPACES OF VEHICLES
1Heating, cooling or ventilating devices
F28D 20/00 2006.1
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
28HEAT EXCHANGE IN GENERAL
DHEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT; HEAT STORAGE PLANTS OR APPARATUS IN GENERAL
20Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/ or F28D19/119
C08C 19/08 2006.1
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
CTREATMENT OR CHEMICAL MODIFICATION OF RUBBERS
19Chemical modification of rubber
08Depolymerisation
CPC
B29C 48/04
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
48Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
03characterised by the shape of the extruded material at extrusion
04Particle-shaped
B29C 48/297
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
48Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
25Component parts, details or accessories; Auxiliary operations
285Feeding the extrusion material to the extruder
297at several locations, e.g. using several hoppers or using a separate additive feeding
B29C 48/405
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
48Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
25Component parts, details or accessories; Auxiliary operations
36Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
395using screws surrounded by a cooperating barrel, e.g. single screw extruders
40using two or more parallel screws ; or at least two parallel non-intermeshing screws; , e.g. twin screw extruders
405Intermeshing co-rotating screws
B29C 48/625
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
48Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
25Component parts, details or accessories; Auxiliary operations
36Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
50Details of extruders
505Screws
625characterised by the ratio of the threaded length of the screw to its outside diameter [L/D ratio]
B29C 48/832
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
48Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
25Component parts, details or accessories; Auxiliary operations
78Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling
80at the plasticising zone, e.g. by heating cylinders
83Heating or cooling the cylinders
832Heating
C08F 2810/10
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
FMACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
2810Chemical modification of a polymer
10including a reactive processing step which leads, inter alia, to morphological and/or rheological modifications, e.g. visbreaking
Applicants
  • FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V. [DE]/[DE] (AllExceptUS)
  • BUSCH, Michael [DE]/[DE] (UsOnly)
  • UTZIG, Johann [DE]/[DE] (UsOnly)
Inventors
  • BUSCH, Michael
  • UTZIG, Johann
Agents
  • FRAUNHOFER-GESELLSCHAFT
Priority Data
10 2010 012 956.925.03.2010DE
10 2010 023 751.515.06.2010DE
10 2010 052 286.423.11.2010DE
10 2010 052 287.223.11.2010DE
Publication Language German (de)
Filing Language German (DE)
Designated States
Title
(DE) VERFAHREN ZUR HERSTELLUNG VON MODIFIZIERTEN KUNSTSTOFFEN MIT VERMINDERTEN KETTENLÄNGEN UND DAMIT HERSTELLBARE ZUSAMMENSETZUNGEN
(EN) METHOD FOR PRODUCING MODIFIED PLASTICS HAVING REDUCED CHAIN LENGTHS AND COMPOSITIONS THAT CAN BE PRODUCED THEREWITH
(FR) PROCÉDÉ DE FABRICATION DE MATIÈRES PLASTIQUES MODIFIÉES AYANT DES LONGUEURS DE CHAÎNE RÉDUITES, ET COMPOSITIONS POUVANT ÊTRE FABRIQUÉES PAR CE PROCÉDÉ
front page image
Abstract
(DE) Es wird ein Verfahren zur Herstellung von modifizierten Kunststoffen, insbesondere von modifizierten Polyolefinen beschrieben, bei dem zu modifizierende Kunststoffe einer Friktionszone zugeführt werden und die Kunststoffe durch die Friktionszone hindurchgeführt werden und währenddessen in die Kunststoffe Friktionsenergie und thermische Energie eingetragen wird, wobei die Friktionsenergie durch hinreichend schnell rotierende dispergierende Elemente erzeugt wird, so dass zumindest in dem Bereich der Friktionszone, in dem die zu modifizierenden Kunststoffe zugeführt werden, durch die eingetragene Friktionsenergie ein Abbau zu modifizierten Kunststoffen stattfindet, wobei die modifizierten Kunststoffe eine Molekulargewichtsverteilung mit weniger als 5 Gew.-% an Polymeren mit einem Molekulargewicht kleiner 1400 g/mol aufweisen.
(EN) The invention relates to a method for producing modified plastics, in particular modified polyolefins, wherein plastics to be modified are fed to a friction zone and the plastics are conducted through the friction zone and at the same time friction energy and thermal energy are applied to the plastics, wherein the friction energy is produced by dispersing elements that rotate sufficiently quickly so that at least in the area of the friction zone, in which the plastics to be modified are fed, the plastics to be modified are decomposed into modified plastics by the applied friction energy, wherein the modified plastics have a molecular weight distribution having less than 5 wt % of polymers having a molecular weight of less than 1400 g/mol.
(FR) L'invention porte sur un procédé de fabrication de matières plastiques modifiées, en particulier de polyoléfines modifiées, dans lequel des matières plastiques modifiées sont envoyées dans une zone de friction, et les matières plastiques traversent la zone de friction et, pendant ce temps-là, une énergie de frottement et une énergie thermique sont introduites dans les matières plastiques, l'énergie de frottement étant produite par des éléments disperseurs, tournant suffisamment vite, de façon qu'au moins dans la zone de friction dans laquelle sont envoyées les matières plastiques à modifier, il se crée, sous l'effet de l'énergie de frottement introduite, une dégradation conduisant à des matières plastiques modifiées, les matières plastiques modifiées présentant une distribution des masses moléculaires inférieure à 5 % de polymères ayant une masse moléculaire inférieure à 1400 g/mol.
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