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WO2005054351A1 - Composition colorante polymere d'addition, son utilisation et matieres recyclables - Google Patents

Composition colorante polymere d'addition, son utilisation et matieres recyclables Download PDF

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Publication number
WO2005054351A1
WO2005054351A1 PCT/GB2004/004421 GB2004004421W WO2005054351A1 WO 2005054351 A1 WO2005054351 A1 WO 2005054351A1 GB 2004004421 W GB2004004421 W GB 2004004421W WO 2005054351 A1 WO2005054351 A1 WO 2005054351A1
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WO
WIPO (PCT)
Prior art keywords
colourant
reducible
moulding composition
composition
coloured
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.)
Ceased
Application number
PCT/GB2004/004421
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English (en)
Inventor
Fuquan Zeng
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ColorMatrix Europe Ltd
Original Assignee
ColorMatrix Europe Ltd
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 ColorMatrix Europe Ltd filed Critical ColorMatrix Europe Ltd
Publication of WO2005054351A1 publication Critical patent/WO2005054351A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • C08J3/20—Compounding polymers with additives, e.g. colouring
    • C08J3/205—Compounding polymers with additives, e.g. colouring in the presence of a continuous liquid phase
    • C08J3/2053—Compounding polymers with additives, e.g. colouring in the presence of a continuous liquid phase the additives only being premixed with a liquid phase
    • 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
    • C08J11/00—Recovery or working-up of waste materials
    • C08J11/04—Recovery or working-up of waste materials of polymers
    • 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
    • C08J2367/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
    • C08J2367/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/141—Feedstock
    • Y02P20/143—Feedstock the feedstock being recycled material, e.g. plastics
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/62—Plastics recycling; Rubber recycling

Definitions

  • This invention relates to polymer colourant additive compositions and their use and to recyclable materials.
  • a colourant additive composition and its use for addition to thermoplastic moulding compositions and to recyclable moulded articles containing said additive are particularly preferred.
  • Polyethylene terephthalate is widely employed in the manufacture of packaging items.
  • One large application for polyethylene terephthalate is in the manufacture of food packaging items and, in particular, beverage bottles.
  • beverage bottles are extensively utilised for carbonated soft drinks and are increasingly more attractive, for safety considerations, in the packaging of alcoholic beverages such as beer.
  • Bottles used for still or carbonated water or other soft drinks are typically colourless, green or blue.
  • polyethylene terephthalate moulding compositions include the manufacture of packages for agrochemicals, cosmetics, detergents and the like.
  • Polyethylene terephthalate bottles are usually manufactured using a two stage process. Granules of polyethylene terephthalate, along with any relevant additives,
  • Machines are also available which make bottle preforms and then blow them immediately into bottles.
  • Colouring of the preform is typically achieved by including a colourant additive with the polyethylene terephthalate granules.
  • the colourant additive may be added as a
  • the colourant additive may be suspended or dissolved in a liquid carrier in order to ensure a uniform dispersion of the colourant throughout the polyethylene terephthalate.
  • the liquid carrier is generally an inert material, such as a hydrocarbon oil, an ester, an alcohol, or a mixture of two or more thereof.
  • the liquid carrier is selected to be non- toxic, to have good compatibility with polyethylene terephthalate and to possess good solvent properties (if the colourant additive is to be dissolved in the liquid carrier).
  • the quantity of carrier included in the composition is kept to a minimum in order that the properties of the polyethylene terephthalate are not adversely affected.
  • Typical temperatures required for injection moulding of polyethylene terephthalate moulding compositions are between about 260 °C and about 285 °C or higher, e.g. up to about 310°C.
  • a colourant additive composition which will withstand these conditions.
  • blow moulding step may tend to result in an inferior colouration of the preform or blow moulded bottle. Therefore, much effort has been invested in finding colourant additives which have good stability and colouring properties at these temperatures.
  • colourless polyethylene terephthalate material may be recycled or reused either with or without the addition of colouring, and green coloured material may be recycled to produce further green bottles.
  • green coloured material may be recycled to produce further green bottles.
  • thermoplastic material which is widely used in the packaging industry is so-called “crystal" polystyrene. This material also requires the use of high temperatures during processing. Typical moulding temperatures for this material range from about 220°C to about 300°C.
  • Other thermoplastic materials which are in wide spread use include polyolefins, such as polyethylene and polypropylene, and polyvinyl chloride.
  • thermoplastic materials such as coloured polyethylene terephthalate or coloured "crystal" polystyrene
  • coloured polyethylene terephthalate or coloured "crystal" polystyrene of any colour in order to produce a material whose colour would permit it to be recycled for further use, for example for food packaging or for use in fibre applications.
  • amber coloured polyethylene terephthalate beer bottles in such a way as to produce, for example, a colourless or near colourless material or a green material which can then
  • thermoplastic polyester moulding composition in order to prevent escaping and being replaced by oxygen. It has accordingly been proposed to add a polyamide to the thermoplastic polyester moulding composition in order to
  • nylon or an ethylene/vinyl alcohol resin is incorporated in a multi-layer preform which is then blow moulded to form a bottle having improved gas barrier properties.
  • moulding compositions for example moulding compositions which comprise polyethylene terephthalate and/or other polyesters
  • moulding compositions for example moulding compositions which comprise polyethylene terephthalate and/or other polyesters
  • a coloured polyester moulding composition which, after having been formed into bottles or other moulded articles, is suitable for recycling to make further bottles or other articles of a commercially acceptable colour.
  • thermoplastic materials such as polyethylene terephthalate or
  • thermoplastic moulding composition for addition to a thermoplastic moulding composition
  • said additive composition comprising at least one reducible colourant uniformly dispersed in an inert liquid carrier therefor, which at least one reducible colourant is water-insoluble in its non-reduced state but water-soluble in its reduced state, and said inert liquid carrier being compatible with said thermoplastic moulding composition.
  • thermoplastic moulding composition is preferably one that tolerates reducing conditions.
  • Suitable materials include, for example, so-called “crystal” polystyrene and polyesters, such as polyethylene terephthalate.
  • the invention is also applicable to polyolefins, such as polyethylene and polypropylene, as well as to polyvinyl chloride.
  • the reducible colourant is substantially stable during the formation of a moulded article from the thermoplastic moulding composition. In order to mould such articles it is necessary to heat the composition to a temperature above its softening point.
  • thermoplastic moulding it is normally preferred to perform moulding at a temperature below the melting point of the polymer material present in the thermoplastic moulding
  • composition In the practice of the present invention, it will often be prefened to
  • injection temperatures in the range of from about 260 °C to about 285 °C or more, e.g. up to about 310°C, can be used in the course of forming a bottle preform whereas a lower temperature of, for example, from about 100°C up to about 170°C is typically used, in combination with a suitable high air pressure of, for example, about 40 bar, in order to blow a bottle of the desired shape from the bottle preform.
  • Polyethylene terephthalate used for injection moulding purposes is typically post- condensed and has a molecular weight in the region of about 25,000 to 30,000.
  • a fibre grade polyethylene terephthalate which is cheaper but is non-post-condensed, with a lower molecular weight in the region of about 20,000.
  • copolyesters of polyethylene terephthalate which contain repeat units from at least 85 mole % terephthalic acid and at least 85 mole % of ethylene glycol.
  • Dicarboxylic acids which
  • phthalic acid can be included, along with terephthalic acid, are exemplified by phthalic acid,
  • diols wliich may be incorporated in
  • copolyesters in addition to ethylene glycol, include diethylene glycol, triethylene
  • polyethylene terephthalate includes not only polyethylene terephthalate but also such copolyesters.
  • Injection moulding of polyethylene terephthalate and other polyester moulding compositions is typically carried out using an injection moulding machine and a maximum barrel temperature in the range of from about 260 °C to about 285 °C or more, for example, up to about 310 ° C .
  • the dwell time at this maximum temperature is typically in the range of from about 15 seconds to about 5 minutes or more, preferably from about 30 seconds to about 2 minutes.
  • thermoplastic moulding composition comprising a thermoplastic material with at least one reducible
  • the invention also provides a moulded article from such a thermoplastic moulding
  • the invention further provides a process for recycling a moulded article which includes subjecting the moulded article to reducing conditions at some stage of the
  • Mechanical recycling procedures may involve the following steps:
  • Collection e.g. of bottles. This is usually organised through bottle collection points and some times by street collection.
  • a green coloured composition may by this procedure (involving the caustic wash in stage 5) be converted to a blue coloured composition, or a red coloured composition can be converted to a colourless or near colourless composition, or an amber coloured composition may be converted to a substantially colourless composition or a green coloured composition.
  • the colour of the material of the moulded article comprising the reducible colourant can be changed by exposing it to caustic wash conditions comprising, for example, an aqueous solution containing from about 1% to about 5%, preferably from about 1.2% to about 3.5%, more preferably from about 1.5% to about 2%, for example about 1.8% sodium hydroxide and from about 0.5% to about 2%, preferably from about 0.6% to about
  • dithionite sodium hydrosulphite, sodium sulfoxylate
  • preferred reducing conditions may include the presence of about 1 g/L sodium hydroxide and of about 2g/L sodium dithionite in the caustic wash. This procedure is extremely useful for enabling recycling of coloured polyester moulded
  • articles such as amber coloured beer bottles, for re-use, since the undesirable amber colour, from the point of view of the recycler, can be converted by use of the invention to an acceptable colour for recycling, such as green or even colourless or near colourless.
  • the reducing conditions under which said at least one reducible colourant is rendered water-soluble may, for example, be provided by the presence of a one or more suitable reducing agents, such as sodium dithionite, hydroxyacetone, formaldehyde, for example, in the caustic wash.
  • a suitable reducing agents such as sodium dithionite, hydroxyacetone, formaldehyde, for example, in the caustic wash.
  • Caustic wash conditions may then be selected in terms of alkali concentration, temperature and time of exposure to facilitate the reduction.
  • the alkali concentration in the caustic wash is from about lg/L to about 50g/L, more preferably from about 1.5g/L to about lOg/L, still more preferably from about 2g/L to about 5g/L.
  • the temperature of the caustic wash is from about 50°C to about 130°C, more preferably from about 80°C to about 130°C, still more preferably from about 90 °C to about 110°C.
  • the length of time to wliich the reducible colourant needs to be exposed to said reducing caustic wash conditions to dissolve is in the region of from about 5 minutes to about 2 hours, for example from about 10 minutes to about 90 minutes, for example from about 30
  • the reducible colourant may be any suitable substance.
  • the reducible colourant may be any suitable substance.
  • thermoplastic moulding composition it may be desirable to include in combination with the reducing conditions used to treat the thermoplastic moulding composition for recycling purposes a material which is capable of opening up the structure of the moulded thermoplastic moulding composition to allow greater penetration of the reducing agent therein during a recycling procedure.
  • a material which is capable of opening up the structure of the moulded thermoplastic moulding composition to allow greater penetration of the reducing agent therein during a recycling procedure is ammonia.
  • the polymer colourant additive composition of the present invention includes a polymer-compatible organic liquid carrier.
  • a carrier must be compatible with the polymer material of the thermoplastic moulding composition and is preferably also compatible with the other components to be included in the thermoplastic moulding composition of the invention.
  • Typical carriers include hydrocarbons, hydrocarbon mixtures, alcohols, esters and mixtures of two or more thereof.
  • the polymer-compatible organic liquid carrier is an oil based vehicle. Examples of such vehicles of the materials available as Clearslip TM 2 and ClearslipTM 3 from ColourMatrix Europe Ltd., of Unit 9-11, Unity Grove, Knowsley Business Park, Knowsley, Merseyside, L34 9GT.
  • moulded article of the invention may also include one or more non-reducible
  • the reducible colourant may comprise a solvent or disperse dye.
  • dyes may be dissolved or dispersed in the organic liquid canier but are soluble in the polymer
  • Suitable solvent dye groups include anthraquinone, indanthrone, monoazo, diazo, methine, quinophthalone, perinone, naphthalidimide and thioindigo dyes.
  • Preferred dyes include the Nat dyes such as quinonic and indigoid dyes, for example anthraquinone and indigo.
  • the colourant additive composition may contain a single dye or a mixture of dyes depending upon the desired colouration of the article. For example, in order to produce an amber coloured bottle there may be required a mixture of a red dye, a yellow dye and a blue dye.
  • suitable dyes for use in the present invention include Vat dyes such as Blue 1, Blue 4 and Blue 6.
  • Reduction of the reducible colourant is preferably a reversible process so that water- soluble reduced colourant recovered during a recycling procedure may then be oxidised back to the reducible colourant, which may be re-used.
  • moulding composition can vary widely depending upon the final colouring effect and colour strength desired in the finished article.
  • the colourant additive composition is
  • liquid organic canier typically in a range of from about 1 to about 85 wt %, more
  • additive composition comprising the reducible dye or dyes uniformly dissolved or dispersed in the liquid canier can then be added to the polymer in ranges from about 0.0001% by weight to about 7% by weight, for example, from 0.01% by weight up to about 5% by weight, based upon the weight of polymer component used. It is not desirable to use higher concentrations of the colourant as this may interfere with the properties of the polymer material.
  • the polymer colourant additive composition may comprise a mixture of a red colourant, a blue colourant, and a yellow colourant in proportions such as to impart an amber colour to a bottle preform extruded therefrom or to a bottle blow moulded from said bottle preform.
  • thermoplastic moulding composition which comprises:
  • thermoplastic moulding composition (a) providing a thermoplastic moulding composition
  • thermoplastic moulding composition (b) admixing with the thermoplastic moulding composition at least one reducible
  • colourant material to form a coloured thermoplastic moulding composition, wliich at least one reducible colourant is water-insoluble in its non-reduced state but water- insoluble in its reduced state;
  • thermoplastic moulding composition (c) heating the coloured thermoplastic moulding composition
  • said at least one reducible colourant is preferably admixed with the thermoplastic moulding composition in the form of a polymer colourant additive composition comprising said at least one reducible colourant uniformly dispersed in an inert liquid canier therefor.
  • a polymer colourant additive composition comprising said at least one reducible colourant uniformly dispersed in an inert liquid canier therefor.
  • the colourant or colourants in any convenient manner, for example in particulate form such a powder or in admixture with a solid carrier.
  • the coloured thermoplastic moulding composition is substantially free from carbon black and from inorganic pigments.
  • thermoplastic moulding composition is injection moulded to form a bottle preform and the resulting bottle preform is then blow moulded to form a bottle.
  • the invention further provides a method of making a blow moulded bottle from a
  • polyester moulding composition which comprises:
  • one reducible colourant material being water-insoluble in its non-reduced state but water-soluble in its reduced state
  • Also provided in accordance with another aspect of the present invention is a method of making a useful article which comprises:
  • thermoplastic moulding composition (A) providing a thermoplastic moulding composition
  • thermoplastic moulding composition at least one reducible colourant material to form a coloured thermoplastic moulding composition, said at least one reducible colourant material being water-insoluble in its non-reduced state but water-soluble in its reduced state;
  • the recycling stage (D) are selected to be sufficient to cause said desirable change of colour in the moulded article material.
  • the variables in the reducing conditions include the nature of the reducing agent, the reducing agent concentration, temperature and time of exposure. Thus, if a weak reducing solution is used it may be necessary to expose the material of the moulded article to said solution for a relevantly longer time and/or at a relatively higher temperature.
  • re-forming step (E) typically techniques that can be used include moulding, extrusion, and other conventional processes for making articles of plastics materials, including fibres.
  • the coloured thermoplastic (e.g. polyester) moulding composition in step (B) can be injection moulded to form a bottle preform and then the resulting bottle preform can be blow moulded to form a bottle.
  • the coloured thermoplastic (e.g. polyester) moulding composition in step (B) can be injection moulded to form a bottle preform and then the resulting bottle preform can be blow moulded to form a bottle.
  • the invention further provides a method of making an article from a coloured thermoplastic moulding composition which comprises:
  • thermoplastic moulding composition comprising recycled coloured thermoplastic material, said recycled coloured thermoplastic material containing at least one reducible colourant material, said reducible colourant material being water-insoluble in its non-reduced state but water-soluble in its
  • thermoplastic moulding composition subjecting the coloured thermoplastic moulding composition to aqueous reducing conditions sufficient to extract at least some of the reducible colourant and form an at least partially colour modified composition
  • the article of step (III) may be a moulded article, such as a bottle preform, or a fibre or any other useful article, such as a tube, a crate, or the like.
  • the invention further provides a process for recyling a thermoplastic moulded article comprising: oc) providing a thermoplastic moulded article incorporating as colourant at least one water-insoluble reducible colourant, which colourant is water-soluble in its
  • this process of the invention further includes the step of recovering the
  • Polyethylene terephthalate is hygroscopic and after a period of approximately one year it is noticeable that preforms made of polyethylene terephthalate have taken up moisture from the air. Therefore, prior to the injection moulding process, polyethylene terephthalate granules for use in the invention are preferably dried for at least about 6 hours at from about 160°C to about 190°C, in a procedure which gives a slightly tactile product.
  • the polyethylene terephthalate granules are transfened directly from the drier to the hopper of the injection moulding machine.
  • the polymer colourant additive composition of the cunent invention can then be added to and mixed with the polymer granules upon charging to the hopper .
  • the injection moulding process typically occurs at between about 260 °C and about 285°C , more preferably at about 270°C, and the polymer material has a dwell time within the machine of less than 1 minute. Longer dwell times may result in inferior colouration of the preform.
  • said article may be recycled by a suitable procedure wliich includes use of temperatures of up to about 300°C or greater and dwell times up to or in excess of 5 minutes. When injection moulded into a preform, the recycled material exhibits a different colour from that of the original colourant additive
  • composition used and hence that of the material which has been recycled.
  • the colour change may be from amber to green, black to blue or amber to colourless.
  • thermoplastic moulding composition of the invention may be utilised to produce
  • a multi-layer bottle comprising a layer of nylon or ethylene/vinyl alcohol copolymer sandwiched between layers of said moulding composition.
  • a mixture was prepared from 15 parts of Vat Blue 4 (Dystar) dispersed in 51 parts of ClearslipTM 1 as inert canier .
  • ClearslipTM 1 is available from ColorMatrix Europe Limited of Units 9-11, Unity Grove, Knowsley Business Park, Knowsley, Merseyside, L34 9GT.
  • Each of the bottle preforms had a satisfactory colour.
  • the bottle preforms were then heated for a period of from about 20 seconds to about 40 seconds using radiant heaters to a temperature in the range of from about 95 °C to about 110 °C and blow moulded using air at 40 bar to form bottles having a capacity of 1 litre.
  • a number of the resulting bottles were recycled by a procedure in which they were shredded and fed to the inlet hopper of a granulating machine and then washed in a caustic wash solution comprising 1.8 % sodium hydroxide and 1% sodium dithionite as reducing agent at a temperature of between about 80°C and 85°C for a period of about one hour.
  • the resulting substantially colourless granules were then extruded at a barrel temperature of about 275 °C with a dwell time at this temperature of about 2 minutes, producing substantially colourless preforms which were successfully blow moulded to form bottles of satisfactory appearance and properties.
  • a mixture was prepared from 15 parts of Vat Blue 6 (Dystar) dispersed in 51 parts
  • ClearslipTM 1 as inert carrier .
  • ClearslipTM 1 is available from ColorMatrix Europe Limited of Units 9-11, Unity Grove, Knowsley Business Park, Knowsley,
  • Each of the bottle preforms had a satisfactory colour.
  • the bottle preforms were then heated for a period of from about 20 seconds to about 40 seconds using radiant heaters to a temperature in the range of from about 95 ° C to about 110°C and blow moulded using air at 40 bar to form bottles having a capacity of 1 litre.
  • a number of the resulting bottles were recycled by a procedure in which they were shredded and fed to the inlet hopper of a granulating machine and then washed in a caustic wash solution comprising 2g/L sodium hydroxide and lOg/L sodium
  • dithionite as reducing agent at a temperature of between about 80 °C and 85 °C for a
  • substantially colourless granules were then extruded at a banel temperature of about 275 °C with a dwell time at this temperature of about 2 minutes, producing substantially colourless preforms which were successfully blow moulded to form bottles of satisfactoiy appearance and properties.

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  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Containers Having Bodies Formed In One Piece (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)

Abstract

La présente invention concerne une composition polymère d'addition et son utilisation ajoutée à des compositions de moulage thermoplastiques, par exemple des compositions de moulage thermoplastiques comprenant des polyesters tels que du polyéthylène téréphthalate. La composition colorante d'addition comprend au moins un colorant réductible. La composition colorante d'addition peut être utilisée dans des compositions de moulage thermoplastiques destinées à la réalisation, par exemple, de bouteilles qui peuvent être recyclées par un processus de recyclage qui comprend l'exposition de la matière recyclée à des conditions de réduction suffisantes pour provoquer un changement de couleur souhaité.
PCT/GB2004/004421 2003-11-12 2004-10-20 Composition colorante polymere d'addition, son utilisation et matieres recyclables Ceased WO2005054351A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0326335A GB2408047A (en) 2003-11-12 2003-11-12 Colourant for use in thermoplastic compositions
GB0326335.7 2003-11-12

Publications (1)

Publication Number Publication Date
WO2005054351A1 true WO2005054351A1 (fr) 2005-06-16

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PCT/GB2004/004421 Ceased WO2005054351A1 (fr) 2003-11-12 2004-10-20 Composition colorante polymere d'addition, son utilisation et matieres recyclables

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GB (1) GB2408047A (fr)
WO (1) WO2005054351A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8722163B2 (en) 2011-09-16 2014-05-13 Pepsico, Inc. Recyclable colorants in plastic beverage containers
CN105315595A (zh) * 2015-11-17 2016-02-10 陕西理工学院 一种废塑料的回收方法
EP4108709A1 (fr) * 2021-06-24 2022-12-28 Smart Coloring GmbH Mélange maître de couleur pour la production d'un article en plastique coloré et procédé de décoloration de l'article en plastique coloré

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2463338B1 (fr) 2010-12-13 2013-08-28 LANXESS Deutschland GmbH Procédé d'optimisation du comportement de cristallisation de masses moulées à base de polyester

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4934593A (fr) * 1972-07-31 1974-03-30
US4940616A (en) * 1982-11-15 1990-07-10 Mitsui Petrochemical Industries Multilayered container and method for making
CA2261303A1 (fr) * 1998-02-06 1999-08-06 Solutia Inc. Methode pour eliminer la couleur de matieres polymeres pouvant etre teintees ioniquement
WO2002057353A2 (fr) * 2000-11-13 2002-07-25 E.I. Dupont De Nemours And Company Produits fabriques a base de resine pour soudage laser avec transmission et absorption de colorants noirs, et compositions de resine colorees ainsi obtenues

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL114004C (fr) * 1956-02-01
JPS5546438B2 (fr) * 1973-03-27 1980-11-22
JPS5728149A (en) * 1980-07-28 1982-02-15 Teijin Ltd Polyacrylate structure capable of converting wavelength of light
EP0047101A3 (fr) * 1980-09-02 1982-03-24 Vedale Limited Système indicateur pour la vie utile de produits libérant des agents actifs dans l'atmosphère
JPS5934593A (ja) * 1982-08-20 1984-02-24 松下電器産業株式会社 報知装置
US4898695A (en) * 1988-11-01 1990-02-06 Pilkington Visioncare Holdings, Inc. Method for tinting hydrophilic plastic articles

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4934593A (fr) * 1972-07-31 1974-03-30
US4940616A (en) * 1982-11-15 1990-07-10 Mitsui Petrochemical Industries Multilayered container and method for making
CA2261303A1 (fr) * 1998-02-06 1999-08-06 Solutia Inc. Methode pour eliminer la couleur de matieres polymeres pouvant etre teintees ioniquement
WO2002057353A2 (fr) * 2000-11-13 2002-07-25 E.I. Dupont De Nemours And Company Produits fabriques a base de resine pour soudage laser avec transmission et absorption de colorants noirs, et compositions de resine colorees ainsi obtenues

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
DATABASE WPI Section Ch Week 197446, Derwent World Patents Index; Class A23, AN 1974-79848V, XP002319312 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8722163B2 (en) 2011-09-16 2014-05-13 Pepsico, Inc. Recyclable colorants in plastic beverage containers
CN105315595A (zh) * 2015-11-17 2016-02-10 陕西理工学院 一种废塑料的回收方法
EP4108709A1 (fr) * 2021-06-24 2022-12-28 Smart Coloring GmbH Mélange maître de couleur pour la production d'un article en plastique coloré et procédé de décoloration de l'article en plastique coloré

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