WO2002042042A1 - High pigment/additive concentration polymer granulate - Google Patents

High pigment/additive concentration polymer granulate Download PDF

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Publication number
WO2002042042A1
WO2002042042A1 PCT/DK2001/000732 DK0100732W WO0242042A1 WO 2002042042 A1 WO2002042042 A1 WO 2002042042A1 DK 0100732 W DK0100732 W DK 0100732W WO 0242042 A1 WO0242042 A1 WO 0242042A1
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WO
WIPO (PCT)
Prior art keywords
additives
polymer carrier
granulate
carrier
pigments
Prior art date
Application number
PCT/DK2001/000732
Other languages
French (fr)
Inventor
Anders Flensburg
Nader Gry
Original Assignee
Anders Flensburg
Nader Gry
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 Anders Flensburg, Nader Gry filed Critical Anders Flensburg
Priority to AU2002213839A priority Critical patent/AU2002213839A1/en
Priority to EP01982193A priority patent/EP1345742A1/en
Publication of WO2002042042A1 publication Critical patent/WO2002042042A1/en

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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
    • C08J3/22—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
    • C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers

Definitions

  • the present invention concerns a method for producing polymer granulate with high concentration of pigments and/or additives as indicated in the preamble of claim 1.
  • the object of the invention is to indicate a method of the kind mentioned in the introduction which enables attaining a hitherto unknown high pigment concentration in monocomponents as well as in masterbatch, in practice resulting in very significant economic advantages as well as advantages in use.
  • the method according to the invention is peculiar in that a low viscosity polymer carrier in the shape of polybutylene (C ) or polypentene (C 5 ) is mixed with one or more pigments and/or one or more additives, possibly together with an auxiliary carrier, and is concentrated up to a pigment/additive content of 75 - 90 %, and that the mixture is melted and processed to become a granulate.
  • a low viscosity polymer carrier in the shape of polybutylene (C ) or polypentene (C 5 ) is mixed with one or more pigments and/or one or more additives, possibly together with an auxiliary carrier, and is concentrated up to a pigment/additive content of 75 - 90 %, and that the mixture is melted and processed to become a granulate.
  • polybutylene (C 4 ) or polypentene (C 5 ) as carrier, possibly in combination with one or more auxiliary wetting agents, it becomes possible to concentrate the pig- ment content considerably and at the same time to achieve a melt that can be made a granulate.
  • the final degree of concentration depends on the "oil number" of each pigment (need for wetting agent).
  • the advantage of concentrating the pigment content is that there is e.g. room for additives in a masterbatch whether this is produced directly or produced from monocomponents by the method according to the invention. Furthermore, a minimizing of the wax content in the masterbatch is achieved so that some of the negative effects by high wax concentration, e.g. "nozzle sauce” and deposits, may be avoided.
  • a recommended dosage of 1-2% is expected by a combination masterbatch compared with one of the leading producers in the word in this area recommending a dosage of about 6 %.
  • polybutylene (C 4 ) or polypentene (C 5 ) as polymer carrier.
  • the melting of the mixture occurs by extrusion, preferably by means of a double screw extruder having great capacity compared to invest- ment in equipment.
  • a low viscosity wax e.g. an oxidised polyethylene wax
  • a filler with a high melting point e.g. calcium carbonate (chalk) or glass (Wollastonite), i.e. a filler which is not dissolved in the melt by the extrusion but makes cheaper or imparts higher pressure strength, respectively, to the material.
  • additives with low melting point e.g. Chimasorb 81 (UN-absorber) or Dehydat 8312 (antistatic), may be applied, i.e. additives which are dissolved in the melt by the extrusion.
  • the method according to the invention may be further modified by the making of a combined masterbatch, e.g. for dyeing a TPU (thermo polyurethane), besides a polymer carrier there are used additives in the form of a laser contrast agent (e.g. Iriodin 25) and a release agent (e.g. Abrilube 77).
  • a laser contrast agent e.g. Iriodin 25
  • a release agent e.g. Abrilube 77
  • a further modification of the method according to the invention may consist in that for making a combined masterbatch, besides a polymer carrier there are used a UV- absorber (e.g. Chimasorb 81), an antistatic agent (e.g. Dehydat 831) and a flame retar- dant (e.g. Apymag AOH 850), i.e. the finished plastic mass is supplied with additives with specific material properties besides colour pigment.
  • a UV- absorber e.g. Chimasorb 81
  • an antistatic agent e.g. Dehydat 831
  • a flame retar- dant e.g. Apymag AOH 850
  • Example la organic pigment
  • auxiliary wetting agent e.g. an oxidised polyethylene wax (Vestowax C 60) are mixed, melted and made to granulate.
  • auxiliary wetting agent e.g. an oxidised polyethylene wax (Vestowax C 60)
  • C polymer carrier polybutylene
  • C 5 polypentene
  • auxiliary wetting agent e.g. an oxidised polyethylene wax (Vestowax C 60)
  • Example 3 a (fillers) 10% polymer carrier polybutylene (C 4 ) or polypentene (C s ), e.g. Vestowax B 912,
  • Example 4a (fluid additives)
  • C 4 polymer carrier polybutylene
  • C 5 polypentene
  • Abrilube 77 release agent
  • Iriodin 825 laser contrast agent
  • polymer carrier polybutylene C 4
  • polypentene C 5
  • Vestowax B 912 1,5% Chimasorb 81 (UV absorber), 5% Dehydat 8312 (antistatic) and 82,5% Apymag AOH 850 (flame retardant) are mixed, melted and made to granulate.
  • the indicated polymer carrier besides its ability to wet the pigment optimally, is furthermore advantageous in that the melt with the pigment is so suited for being extruded, i.e. it is "coherent” (plastic) and workable at a suitable temperature and hard when cooled whereby it becomes possible to extrude it to granulate.

Abstract

A method for producing polymer granulate with high concentration of pigments and/or additives, preferably in the form of a monocomponent based on wax or a masterbatch containing one or more pigments and/or additives, is disclosed. A low viscosity polymer carrier is mixed with one or more pigments and/or one or more additives, possibly together with an auxiliary carrier, and is concentrated up to a pigment/additive content of 75 - 90 %, and the mixture is melted and processed to become a granulate. By using polybutylene (C4) or polypentene (C5) as carrier, possibly in combination with one or more auxiliary wetting agents, it becomes possible to concentrate the pigment content significantly and at the same time to achieve a melt that may be made into granulate.

Description

HIGH PIGMENT/ADDITIVE CONCENTRATION POLYMER GRANULATE
Background of the invention
The present invention concerns a method for producing polymer granulate with high concentration of pigments and/or additives as indicated in the preamble of claim 1.
In the plastic industry, different carriers for pigments and additives are used, and in that connection the terms "monocomponents" and "masterbatch" are used where a monocomponent in granulate form only contains one type of pigments or one additive, whereas a masterbatch, also in granulate form, may contain several monocomponents, i.e. several pigments and/or several additives. The most common carriers are PE, EVA or EMMA based waxes which allow a pigment concentration of about 50% at the most, though higher for black and white pigments.
Until now, masterbatch has been produced according to two methods, namely:
A) As a product of different monocomponents mixed with a polymer carrier.
B) Several pigments directly mixed with a polymer carrier.
By method B, a greater pigment concentration has been achieved than by method A.
The object of the invention is to indicate a method of the kind mentioned in the introduction which enables attaining a hitherto unknown high pigment concentration in monocomponents as well as in masterbatch, in practice resulting in very significant economic advantages as well as advantages in use.
The method according to the invention is peculiar in that a low viscosity polymer carrier in the shape of polybutylene (C ) or polypentene (C5) is mixed with one or more pigments and/or one or more additives, possibly together with an auxiliary carrier, and is concentrated up to a pigment/additive content of 75 - 90 %, and that the mixture is melted and processed to become a granulate.
By using polybutylene (C4) or polypentene (C5) as carrier, possibly in combination with one or more auxiliary wetting agents, it becomes possible to concentrate the pig- ment content considerably and at the same time to achieve a melt that can be made a granulate. The final degree of concentration depends on the "oil number" of each pigment (need for wetting agent).
Preliminary tests have indicated that by using inorganic pigments, a pigment concentration above 90% may be attained, and that by using organic pigments, a pigment concentration over 75% may be attained. On this background it may be expected that by the method according to the invention there may be achieved still higher pigment concentrations. By extremely high pigment concentrations it seems advantageous to use an auxiliary wetting agent so that an even better humidification may be achieved than possible with polybutylene (C4) or polypentene (C5) as carrier medium as the pigment concentration may be increased hereby because a part of the carrier medium may be released for primarily constituting a binder.
The advantage of concentrating the pigment content is that there is e.g. room for additives in a masterbatch whether this is produced directly or produced from monocomponents by the method according to the invention. Furthermore, a minimizing of the wax content in the masterbatch is achieved so that some of the negative effects by high wax concentration, e.g. "nozzle sauce" and deposits, may be avoided.
By the method according to the invention, a recommended dosage of 1-2% is expected by a combination masterbatch compared with one of the leading producers in the word in this area recommending a dosage of about 6 %.
Preferably, by the method according to the invention there is used polybutylene (C4) or polypentene (C5) as polymer carrier.
It may be particularly suitable if the melting of the mixture occurs by extrusion, preferably by means of a double screw extruder having great capacity compared to invest- ment in equipment.
By the method according to the invention it may be advantageous that a low viscosity wax, e.g. an oxidised polyethylene wax, is used as auxiliary carrier or wetting agent. With the purpose of providing the finished plastic mass with specific material properties, by the method according to the invention it may be possible to use a filler with a high melting point, e.g. calcium carbonate (chalk) or glass (Wollastonite), i.e. a filler which is not dissolved in the melt by the extrusion but makes cheaper or imparts higher pressure strength, respectively, to the material.
With the object of providing further specific material properties to the finished plastic mass, by the method according to the invention it may be possible that, besides a polymer carrier, fluid additives or additives with low melting point, e.g. Dynasylan Ameo or Chimasorb 81 (UN absorber), may be applied, i.e. additives that are dissolved in the melt by the extrusion.
Other specific material properties may be provided in masterbatches by further modi- fication by the method according to the invention so that, besides a polymer carrier, additives with low melting point, e.g. Chimasorb 81 (UN-absorber) or Dehydat 8312 (antistatic), may be applied, i.e. additives which are dissolved in the melt by the extrusion.
The method according to the invention may be further modified by the making of a combined masterbatch, e.g. for dyeing a TPU (thermo polyurethane), besides a polymer carrier there are used additives in the form of a laser contrast agent (e.g. Iriodin 25) and a release agent (e.g. Abrilube 77).
A further modification of the method according to the invention may consist in that for making a combined masterbatch, besides a polymer carrier there are used a UV- absorber (e.g. Chimasorb 81), an antistatic agent (e.g. Dehydat 831) and a flame retar- dant (e.g. Apymag AOH 850), i.e. the finished plastic mass is supplied with additives with specific material properties besides colour pigment.
The invention is now explained in more detail with reference to the examples below: Example la (organic pigment)
10% polymer carrier polybutylene (C ) or polypentene (C5), e.g. Vestowax B 912, 85% CI (colour index) pigment red 48:1 and 5% auxiliary wetting agent, e.g. an oxidised polyethylene wax (Vestowax C 60) are mixed, melted and made to granulate.
Example lb (organic pigment)
8% polymer carrier polybutylene (C4) or polypentene (C5), e.g. Vestowax B 912, 90% CI pigment green 7 and 2% auxiliary wetting agent, e.g. an oxidised polyethylene wax (Vestowax C 60) are mixed, melted and made to granulate.
Example lc (organic pigment)
10% polymer carrier polybutylene (C ) or polypentene (C5), e.g. Vestowax B 912, 80% CI pigment black 7 and 10% auxiliary wetting agent, e.g. an oxidised polyethylene wax (Vestowax C 60) are mixed, melted and made to granulate.
Example 2a (inorganic pigment)
10%) polymer carrier polybutylene (C ) or polypentene (C5), e.g. Vestowax B 912,
90% CI pigment yellow 184 are mixed, extruded and made to granulate.
Example 2b (inorganic pigment)
10% polymer carrier polybutylene (C4) or polypentene (C5), e.g. Vestowax B 912, 90%) CI pigment red 101 are mixed, extruded and made to granulate.
Example 3 a (fillers) 10% polymer carrier polybutylene (C4) or polypentene (Cs), e.g. Vestowax B 912,
90%) calcium carbonate or chalk are mixed, melted and made to granulate.
Example 3b (fillers')
10% polymer carrier polybutylene (C4) or polypentene (C5), e.g. Vestowax B 912, and 90%) crushed glass, e.g. Wollastonite, are mixed, melted and made to granulate. Example 4a (fluid additives)
10% polymer carrier polybutylene (C4) or polypentene (C5), e.g. Vestowax B 912, 45% Dynasylan Ameo (fluid) and 45 % Aerosil (porosity) or other blown silicon are mixed, melted and made to granulate.
Example 4b (additives with low melting point)
10% polymer carrier polybutylene (C ) or polypentene (C5), e.g. Vestowax B 912, 70% Chimasorb 81 (UV-absorber) and 20% Aerosil (porosity) are mixed, melted and made to granulate.
Example 4c (additives with low melting point)
20%) polymer carrier polybutylene (C ) or polypentene (C5), e.g. Vestowax B 912,
80% Dehydat 8312 (antistatic) are mixed, melted and made to granulate.
Example 5a (combined masterbatch)
10% polymer carrier polybutylene (C4) or polypentene (C5), e.g. Vestowax B 912, 6% CI pigment yellow 184, 54% titanium dioxide kronos 2230, 20%> Abrilube 77 (release agent) and 10% Iriodin 825 (laser contrast agent) are mixed, melted and made to granulate.
Example 5b (combined masterbatch)
9% polymer carrier polybutylene (C4) or polypentene (C5), e.g. Vestowax B 912, 15% Chimasorb 81 (UN absorber), 25% Abrilube 77 (release agent), and 51% titanium dioxide kronos 2230 are mixed, melted and made to granulate.
Example 5c (combined masterbatch)
11% polymer carrier polybutylene (C4) or polypentene (C5), e.g. Vestowax B 912, 1,5% Chimasorb 81 (UV absorber), 5% Dehydat 8312 (antistatic) and 82,5% Apymag AOH 850 (flame retardant) are mixed, melted and made to granulate.
By production experiments it has appeared that by using the indicated low viscosity polymer carrier, possibly together with an auxiliary carrier with even lesser viscosity, a pigment concentration above 90%, e.g. of the pigment iron oxide red, has been achieved. The pigment was fully dispersed. The melt could be extruded and drawn into strings that could be cut to granulate after cooling. It is most possible that the product may also be produced by underwater granulating. Furthermore, it looks like the cutting may occur directly on the extruder head, i.e. only with air cooling, however, something which is depending on optimal control of the tendency of the melt to stick - the blister material is not saturated yet.
The tests were made by means of a very short double screw extruder L/D 7. By using a more normal extruder L/D 40, the product will become even better.
It is to be noted that the indicated polymer carrier, besides its ability to wet the pigment optimally, is furthermore advantageous in that the melt with the pigment is so suited for being extruded, i.e. it is "coherent" (plastic) and workable at a suitable temperature and hard when cooled whereby it becomes possible to extrude it to granulate.
The high concentrations produced until now have been either a coating of pigment grains or powder compressed into granulate where only pressure made the product into the granulate form, which is not to favourable as the granulate cannot endure transport.
An important advantage by the new product made by the method according to the invention is the nature of the carrier together with the low concentration of it, implying that the product is more universally appliable that previous universal carriers, i.e. monocomponents or masterbatch made according to the invention are appliable in far more end materials than by products according to prior art.

Claims

1. A method for producing polymer granulate with high concentration of pigments and/or additives, preferably in the form of a monocomponent based on wax or a masterbatch containing one or more pigments and/or additives, respectively, characterized in that a low viscosity polymer carrier is mixed with one or more pigments andor one or more additives, possibly together with an auxiliary carrier, and is concentrated up to a pigment/additive content of 75 - 90 %, and that the mixture is melted and processed to become a granulate.
2. A method according to claim 1, characterized in that polybutylene (C4) is used as polymer carrier.
3. A method according to claim 1, characterized in that polypentene (C5) is used as polymer carrier.
4. A method according to claim 1, characterized in that the melting of the mixture occurs by extrusion, preferably by means of a double screw extruder.
5. A method according to claim 1, characterized in that a very low viscosity wax, e.g. an oxidised polyethylene wax, is used as auxiliary carrier.
6. A method according to claim 1, characterized in that there is used a filler with high melting point, e.g. calcium carbonate (chalk) or glass (WoUastonite), i.e. a filler which is not dissolved in the melt by the extrusion.
7. A method according to claim 1, characterized in that besides a polymer carrier there are used fluid additives, e.g. Dynasylan Ameo, i.e. additives which are dissolved in the melt by the extrusion.
8. A method according to claim 1, characterized in that besides a polymer carrier there are used additives with low melting point, e.g. Chimasorb 81 (UV- absorber) or Dehydat 8312 (antistatic), i.e. additives which are dissolved in the melt by the extrusion.
9. A method according to claim 1, characterized in that, for making a com- bined masterbatch, e.g. for dyeing a TPU (thermo polyurethane), besides a polymer carrier there are used additives in the form of a laser contrast agent (e.g. Iriodin 25) and a release agent (e.g. Abrilube 77).
10. A method according to claim 1, characterized in that for making a com- bined masterbatch, besides a polymer carrier there are used a UV-absorber (e.g. Chimasorb 81), an antistatic agent (e.g. Dehydat 831) and a flame retardant (e.g. Apymag AOH 850).
PCT/DK2001/000732 2000-11-27 2001-11-06 High pigment/additive concentration polymer granulate WO2002042042A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU2002213839A AU2002213839A1 (en) 2000-11-27 2001-11-06 High pigment/additive concentration polymer granulate
EP01982193A EP1345742A1 (en) 2000-11-27 2001-11-06 High pigment/additive concentration polymer granulate

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DKPA200001787 2000-11-27
DKPA200001787 2000-11-27

Publications (1)

Publication Number Publication Date
WO2002042042A1 true WO2002042042A1 (en) 2002-05-30

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AU (1) AU2002213839A1 (en)
WO (1) WO2002042042A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009009808A2 (en) 2007-07-10 2009-01-15 Lionel Nicholas Mantzivis Masterbatch preparation process
WO2010102631A1 (en) 2009-03-09 2010-09-16 Anders Flensburg Method for manufacturing of masterbatches and compounds
CN113214633A (en) * 2021-05-14 2021-08-06 浙江聚普新材料科技有限公司 UV (ultraviolet) -resistant yellowing-resistant TPU (thermoplastic polyurethane) master batch and preparation method thereof

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4366271A (en) * 1978-12-07 1982-12-28 Ciba-Geigy Corporation Process for the production of colorant preparations and the colorant preparations obtained thereby
US4484952A (en) * 1980-01-24 1984-11-27 Holland Colours Apeldoorn B.V. Particulate coloring composition made by prilling
US4530880A (en) * 1983-01-27 1985-07-23 Sekisui Kaseihin Kogyo Kabushiki Kaisha Granular organohalide flame retardant additive
US5053444A (en) * 1986-09-01 1991-10-01 Imperial Chemical Industries Plc Polymer additive concentrate
WO1997031589A1 (en) * 1996-02-28 1997-09-04 Coltec Industries Inc. Process for producing filled polytetrafluoroethylene resin composite materials and products

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4366271A (en) * 1978-12-07 1982-12-28 Ciba-Geigy Corporation Process for the production of colorant preparations and the colorant preparations obtained thereby
US4484952A (en) * 1980-01-24 1984-11-27 Holland Colours Apeldoorn B.V. Particulate coloring composition made by prilling
US4530880A (en) * 1983-01-27 1985-07-23 Sekisui Kaseihin Kogyo Kabushiki Kaisha Granular organohalide flame retardant additive
US5053444A (en) * 1986-09-01 1991-10-01 Imperial Chemical Industries Plc Polymer additive concentrate
WO1997031589A1 (en) * 1996-02-28 1997-09-04 Coltec Industries Inc. Process for producing filled polytetrafluoroethylene resin composite materials and products

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009009808A2 (en) 2007-07-10 2009-01-15 Lionel Nicholas Mantzivis Masterbatch preparation process
WO2009009808A3 (en) * 2007-07-10 2009-03-12 Lionel Nicholas Mantzivis Masterbatch preparation process
CN101790557B (en) * 2007-07-10 2012-10-10 莱昂内尔·尼古拉斯·曼茨韦斯 Masterbatch preparation process
US8481614B2 (en) 2007-07-10 2013-07-09 Lionel Nicholas Mantzivis Masterbatch preparation process
AU2008274913B2 (en) * 2007-07-10 2013-10-17 Lionel Nicholas Mantzivis Masterbatch preparation process
WO2010102631A1 (en) 2009-03-09 2010-09-16 Anders Flensburg Method for manufacturing of masterbatches and compounds
CN113214633A (en) * 2021-05-14 2021-08-06 浙江聚普新材料科技有限公司 UV (ultraviolet) -resistant yellowing-resistant TPU (thermoplastic polyurethane) master batch and preparation method thereof

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EP1345742A1 (en) 2003-09-24

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