WO2003025046A1 - Procede de fabrication de melanges meres - Google Patents

Procede de fabrication de melanges meres Download PDF

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Publication number
WO2003025046A1
WO2003025046A1 PCT/GB2002/003780 GB0203780W WO03025046A1 WO 2003025046 A1 WO2003025046 A1 WO 2003025046A1 GB 0203780 W GB0203780 W GB 0203780W WO 03025046 A1 WO03025046 A1 WO 03025046A1
Authority
WO
WIPO (PCT)
Prior art keywords
plastics material
components
powder
colouring
carbon black
Prior art date
Application number
PCT/GB2002/003780
Other languages
English (en)
Inventor
George Leopold Archer
John Stewart Holmes
Neville Hugh Mckay
Original Assignee
G.J.N. Polymers Limited
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 G.J.N. Polymers Limited filed Critical G.J.N. Polymers Limited
Priority to US10/332,052 priority Critical patent/US20040034949A1/en
Priority to EP02755182A priority patent/EP1419192A1/fr
Priority to CA002457758A priority patent/CA2457758A1/fr
Publication of WO2003025046A1 publication Critical patent/WO2003025046A1/fr

Links

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
    • C08J3/20—Compounding polymers with additives, e.g. colouring
    • C08J3/22—Compounding polymers with additives, e.g. colouring using masterbatch techniques
    • C08J3/226—Compounding polymers with additives, e.g. colouring using masterbatch techniques using a polymer as a carrier
    • 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
    • C08J2401/00—Characterised by the use of cellulose, modified cellulose or cellulose derivatives

Definitions

  • the present invention relates to a process for producing a colouring agent for colouring a polymer, and in particular to a process for producing a masterbatch for use in extrusion processes and the like.
  • the colouring agent is normally prepared by adding a dyestuff to a plastics material in order to produce a small amount of intensely coloured plastics material, and then by mixing the intensely coloured plastics material with a second plastics material (which may or may not be the same as the first) when the second plastics material is being formed into the finished article.
  • the intensely coloured first plastics material is known as "masterbatch".
  • Black masterbatch is generally formed by mixing carbon black with an appropriate polymer and optionally adding chalk dust as a filler in an extrusion machine. The components are heated, mixed, extruded and pelletised to produce the masterbatch, which is then added in amounts of 0.1 to 25% by weight to the plastics material when it is being processed into the finished article (for example in a moulding or extrusion process).
  • an appropriately coloured pigment is mixed with the polymer and chalk filler (normally without carbon black) and the process is carried out as before.
  • EP 0322555 discloses a method for colouring thermoplastic polymer resins using a masterbatch which is formed from a colorant such as carbon black and a polyetherimide ester elastomer. A wide variety of inorganic and organic colorants are disclosed.
  • the masterbatch may be manufactured on high intensity high shear equipment such as compounding extruders, two-roll compounding mills and in Banbury mixers.
  • WO 79/00406 discloses a method for the preparation of a masterbatch to be added to a thermoplastic resin.
  • the masterbatch is in the form of a colourant including colour pigment particles as an additive dispersed in a vehicle.
  • JP 08003322 (Canon KK) discloses compositions for colouring plastics comprised of thermoplastic polymers and pigments.
  • the compositions give mouldings without unevenness or density difference of colour.
  • a process for producing a colouring agent for colouring a polymer comprising the step of mixing a plastics material and waste print resin.
  • pure carbon black and low density polyethylene may be added.
  • Print resin is a specific product used by the print industry to create print automatically and at high speed onto paper (or another substrate) without causing smudging.
  • Print resin is normally provided in powder form, and generally comprises at least some of the following components: carbon black, ferrous oxide, carranba wax, styrene acrylic polymer, polyester resin, zinc stearate, nigrazine dye and oxide fumerate powder.
  • carrier polymers may be included depending on the brand.
  • Ferrous oxide, carbon black and nigrazine dye are black colour enhancers, and one or two of the three may be omitted, depending on the shade of black or brand of powder employed. If a different colour to black is required, then all three are omitted, and a pigment of appropriate colour is added.
  • print powder also includes a component or number of components which stabilises the melting point of the composition.
  • All waste print powders investigated by the applicants include waste print powders obtained from Xerox, Canon, Ricoh, Hewlett-Packard and Osay) have a melting point close to 118°C.
  • Print powder is normally provided in a sealed cartridge for use in computer printers and photocopying machines.
  • the cartridge may have a sliding door or the like which opens when the cartridge is fitted into the printer in order to allow access to the waste print powder, and closes when the cartridge is removed from the printer in order to prevent the escape of powder. It is impractical to design a system which uses all of the powder in a cartridge and inevitably somewhere in the region of 5% of the powder remains inaccessible in the cartridge when the printer shows the cartridge as having expired.
  • the powder left in expired cartridges is a waste product which is very difficult to dispose of.
  • the powder is so finely divided (with particle sizes being in the order of 15 ⁇ m) that it tends to escape from landfill sites and find its way to the water supply, with serious environmental consequences. This is now of world-wide concern.
  • waste print powder can be used to make masterbatch.
  • a waste product which is extremely difficult to dispose of in an environmentally friendly way can be employed in the production of an industrially useful product.
  • the powder employed in the present invention may be obtained from spent cartridges as described above, or may be obtained directly from the print manufacturer, who may have supplies which could not otherwise be used in print cartridges.
  • waste powder for printer cartridges must be produced with having narrow particle size distribution. Powder having particles which are too small (in the order of 2 ⁇ m or less) or too large (in the order of 10 ⁇ m or more) cannot be employed in printer cartridges and is surplus to requirements. It is however perfectly suitable for the purposes of the present invention.
  • Plastics materials - preferably from 5 to 95%, more preferably at least from 20 to 50%, most preferably about 25%.
  • Carbon black - preferably from 0.5 to 80%, more preferably from 20 to 40%, most preferably about 25%.
  • Waste print powder - preferably from 5 to 80%, more preferably from 25 to 50%, most preferably about 40%.
  • the ratio of plastics material to carbon black depends on the particle size of the carbon black.
  • the ratios of particularly preferred embodiments of the present invention are given in Table 1 below:
  • Carbon Black DBP Structure refers to the grade of carbon black and is a definition well known in the industry.
  • the likelihood is that: (1) the end product will be too brittle to be effective (2) the product will overheat during the process and the mixture will oxidise (3) if oxidation does occur the pigment transportation qualities of the product are reduced to below commercial value.
  • the relative proportions of the various components is varied depending on how dark the masterbatch is required to be (the so-called "cover"). For example, if heavier cover is required than that given by the preferred proportions of 50% waste print powder, 25% carbon black and 25% polymer, then 45% waste print powder, 30% carbon black and 25% polymer may be used. Ideally, the polymer is included at 25% by weight or more, which prevents the final product becoming brittle and difficult to handle during extrusion.
  • additives may be included to create and/or enhance the required end-product specification.
  • the appropriate coloured pigment e.g. coloured waste print powder
  • the coloured powder may be supplemented with additional pigment and/or other additives, in order to produce the desired final colour.
  • the components are mixed loosely in a drum. 2.
  • the components are transferred by a variable speed feeder at a defined rate to a mixer and grinder where they are mixed, ground and amalgamated.
  • the resulting materials exit the pre-mixer in a rope form which is then fed by a time-sequenced pusher device at a constant rate into an extruder.
  • the mixture is mixed and extruded as a series of strands.
  • the components are mixed together and heated in a mixing machine such as a twin screw extruder, a single screw extruder, a two roll mill, or, preferably, a Farrel CP machine, a B anbury mixer, or any suitable mixer.
  • Processing temperatures within the mixer are fairly flexible, but preferably range from 135 to 230°C and are most preferably at about 150°C. At approximately 118°C, the waste print powder melts and then very rapidly hardens as the temperature rises by another degree or so. It is therefore necessary to use a mixer which is sufficiently powerful to grind the powder continuously to prevent it from conglomerating and hardening.
  • the mixer should be sufficiently powerful to mix the waste print powder and the carbon black into the carrier resin homogeneously. It has been discovered that the Banbury and Farrel machines are particularly effective at achieving this aim.
  • the components are mixed at a mixing rate of from 150 to 500 min "1 , preferably from 350 to 400 min "1 .
  • the mixer entrance may be artificially cooled, for example by circulating cooled water in a jacket around the entrance, in order to maintain the entrance at the temperatures outlined above.
  • the components are fed into the mixer until the maximum safe operational amperage is reached. In the case of a Farrel CP 500, the maximum amperage is in the region of 90 to 95 amps and this equates to a rate of addition of the mix of from 500 to 550 kg per hour.
  • plastics material may be selected by a skilled person to match the plastics material which is to be coloured by addition of the masterbatch.
  • plastics material include polyethylene, polypropylene, EVA, EEA, ABS, PVC or any other type of polymer.
  • the masterbatch may be extruded and divided into pellets for use in the colouring of a second plastics material.
  • a colouring agent for colouring a polymer which agent is obtainable by means of a process defined above.
  • a process for forming a coloured object from a plastics material comprising the steps of mixing said plastics material with a colouring agent obtainable by means of a process as defined above, and forming the coloured plastics material into said object.
  • the object may be formed by means of an extrusion or moulding process.
  • the amount of masterbatch added to the plastics material generally varies from 1 to 25% by weight. The precise amount will depend on the level of cover required, and from what the plastics material is formed. For example, if the plastics material is clear, then a relatively low amount of masterbatch is required (perhaps 1 - 2%) in order to produce a good level of cover. If however plastics material is used which has been coloured white (with e.g. titanium dioxide), then perhaps 15-20% of masterbatch may be required in order to achieve the same level of cover. Cover is usually assessed by eye and the components of the subsequent process adjusted accordingly.
  • Carbon black, print powder from expired printer cartridges and manufacturer's waste and polyethylene resin were weighed and loaded into a blender above an extruder in the following amount:
  • the mixture was fed into a Farrel CP 500 mixer at a feed rate of from 350 to 550Kg ⁇ h.
  • the entrance to the mixer as surrounded with a water-cooled jacket in order to maintain the temperature at about 60 to 70°C.
  • the components were mixed at high pressure within the Farrel CP 500 at approximately 150°C and at a mixing speed of from 350 to 400 revolutions per minute.
  • Example 2 The resultant mix was discharged from the mixer in the form a continuous hot rope into a single screw extruder. It was then pushed through a dye to form separate strands, which were fed into a pelletiser where pellets were formed and cooled.
  • Example 2
  • Example 1 The process of Example 1 was carried out except that the proportions of the components were altered to the following in order to provide masterbatch with a heavier cover:
  • Machine settings are within parameters as defined in Example 1.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Processes Of Treating Macromolecular Substances (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

L'invention concerne un procédé de production d'un colorant (mélange mère) pour polymères. Ce procédé consiste d'abord à mélanger une matière plastique avec du noir de carbone et des résidus de poudre d'encre. De préférence, les proportions maximales des résidus de poudre d'encre sont de 50 %. Ce procédé permet de recycler les résidus de poudre d'encre de manière utile et de résoudre par la même le problème de pollution environnementale par les résidus de poudre d'encre.
PCT/GB2002/003780 2001-08-14 2002-08-14 Procede de fabrication de melanges meres WO2003025046A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US10/332,052 US20040034949A1 (en) 2001-08-14 2002-08-14 Method for making masterbatch
EP02755182A EP1419192A1 (fr) 2001-08-14 2002-08-14 Procede de fabrication de melanges meres
CA002457758A CA2457758A1 (fr) 2001-08-14 2002-08-14 Procede de fabrication de melanges meres

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB0119815.9A GB0119815D0 (en) 2001-08-14 2001-08-14 Method for making masterbatch
GB0119815.9 2001-08-14

Publications (1)

Publication Number Publication Date
WO2003025046A1 true WO2003025046A1 (fr) 2003-03-27

Family

ID=9920379

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2002/003780 WO2003025046A1 (fr) 2001-08-14 2002-08-14 Procede de fabrication de melanges meres

Country Status (5)

Country Link
US (1) US20040034949A1 (fr)
EP (1) EP1419192A1 (fr)
CA (1) CA2457758A1 (fr)
GB (1) GB0119815D0 (fr)
WO (1) WO2003025046A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005054344A1 (fr) * 2003-12-05 2005-06-16 John Scheirs Melange maitre
WO2008070916A1 (fr) * 2006-12-14 2008-06-19 Close The Loop Technologies Pty Ltd Matériaux, systèmes et procédés mettant en jeu une matière plastique
WO2014138787A1 (fr) * 2013-03-15 2014-09-18 Close The Loop Technologies Pty Ltd Additif à base de toner modifié pour compositions à base d'asphalte
EP2915652A1 (fr) 2014-03-03 2015-09-09 Ricoh Company, Ltd. Méthode et appareil pour la production de granulés de mélange maître de toner usagé
EP2915837A1 (fr) 2014-03-03 2015-09-09 Ricoh Company, Ltd. Procédé et dispositif destiné à préparer un mélange maître à partir de la poudre de toner usagé

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1979000406A1 (fr) * 1977-12-19 1979-07-12 T Akesson Charge principale pour resine thermoplastique
US4379871A (en) * 1975-01-09 1983-04-12 Deutsche Gold- Und Silber-Scheideanstalt Vormals Roessler Process for the production of carbon black containing pigment-synthetic resin concentrates
EP0322555A2 (fr) * 1987-12-23 1989-07-05 General Electric Company Système de véhicule de polymère
EP0674246A1 (fr) * 1994-02-18 1995-09-27 Buna Sow Leuna Olefinverbund GmbH Matière synthétique moulable de recyclage
JPH083322A (ja) * 1994-06-27 1996-01-09 Canon Inc プラスチック用着色剤組性物
US6113681A (en) * 1999-08-13 2000-09-05 Texas Department Of Transportation Toner-modified asphalt compositions

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4379871A (en) * 1975-01-09 1983-04-12 Deutsche Gold- Und Silber-Scheideanstalt Vormals Roessler Process for the production of carbon black containing pigment-synthetic resin concentrates
WO1979000406A1 (fr) * 1977-12-19 1979-07-12 T Akesson Charge principale pour resine thermoplastique
EP0322555A2 (fr) * 1987-12-23 1989-07-05 General Electric Company Système de véhicule de polymère
EP0674246A1 (fr) * 1994-02-18 1995-09-27 Buna Sow Leuna Olefinverbund GmbH Matière synthétique moulable de recyclage
JPH083322A (ja) * 1994-06-27 1996-01-09 Canon Inc プラスチック用着色剤組性物
US6113681A (en) * 1999-08-13 2000-09-05 Texas Department Of Transportation Toner-modified asphalt compositions

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005054344A1 (fr) * 2003-12-05 2005-06-16 John Scheirs Melange maitre
WO2008070916A1 (fr) * 2006-12-14 2008-06-19 Close The Loop Technologies Pty Ltd Matériaux, systèmes et procédés mettant en jeu une matière plastique
WO2014138787A1 (fr) * 2013-03-15 2014-09-18 Close The Loop Technologies Pty Ltd Additif à base de toner modifié pour compositions à base d'asphalte
US9139717B2 (en) 2013-03-15 2015-09-22 Close The Loop Technologies Pty Ltd. Ground tire rubber additive and asphalt including same
AU2014231764B2 (en) * 2013-03-15 2017-11-30 Close The Loop Technologies Pty Ltd Modified toner based additive for asphalt-based compositions
US9926436B2 (en) 2013-03-15 2018-03-27 Close The Loop Technologies Pty Ltd. Asphalt including modified toner based additive
EP2915652A1 (fr) 2014-03-03 2015-09-09 Ricoh Company, Ltd. Méthode et appareil pour la production de granulés de mélange maître de toner usagé
EP2915837A1 (fr) 2014-03-03 2015-09-09 Ricoh Company, Ltd. Procédé et dispositif destiné à préparer un mélange maître à partir de la poudre de toner usagé

Also Published As

Publication number Publication date
GB0119815D0 (en) 2001-10-10
CA2457758A1 (fr) 2003-03-27
EP1419192A1 (fr) 2004-05-19
US20040034949A1 (en) 2004-02-26

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