WO2015093947A1 - Peinture comportant du noir de carbone - Google Patents

Peinture comportant du noir de carbone Download PDF

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Publication number
WO2015093947A1
WO2015093947A1 PCT/NL2014/050869 NL2014050869W WO2015093947A1 WO 2015093947 A1 WO2015093947 A1 WO 2015093947A1 NL 2014050869 W NL2014050869 W NL 2014050869W WO 2015093947 A1 WO2015093947 A1 WO 2015093947A1
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Prior art keywords
carbon black
paint
black powder
total weight
range
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PCT/NL2014/050869
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English (en)
Inventor
Arnoldus Henricus Adrianus Verberne
Jan Anne JONKMAN
Christopher Michael Twigg
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Black Bear Carbon B.V.
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Publication of WO2015093947A1 publication Critical patent/WO2015093947A1/fr

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    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK  ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
    • C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
    • C09C1/44—Carbon
    • C09C1/48—Carbon black
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK  ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
    • C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
    • C09C1/44—Carbon
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK  ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
    • C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
    • C09C1/44—Carbon
    • C09C1/48—Carbon black
    • C09C1/482—Preparation from used rubber products, e.g. tyres
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK  ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
    • C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
    • C09C1/44—Carbon
    • C09C1/48—Carbon black
    • C09C1/50—Furnace black ; Preparation thereof
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK  ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
    • C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
    • C09C1/44—Carbon
    • C09C1/48—Carbon black
    • C09C1/52—Channel black ; Preparation thereof
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK  ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
    • C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
    • C09C1/44—Carbon
    • C09C1/48—Carbon black
    • C09C1/54—Acetylene black; thermal black ; Preparation thereof
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/60—Additives non-macromolecular
    • C09D7/61—Additives non-macromolecular inorganic
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/51—Particles with a specific particle size distribution
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/60—Particles characterised by their size
    • C01P2004/61—Micrometer sized, i.e. from 1-100 micrometer
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/60—Particles characterised by their size
    • C01P2004/62—Submicrometer sized, i.e. from 0.1-1 micrometer
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/60—Particles characterised by their size
    • C01P2004/64—Nanometer sized, i.e. from 1-100 nanometer
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/12—Surface area
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/19—Oil-absorption capacity, e.g. DBP values
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/40—Electric properties
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/60—Optical properties, e.g. expressed in CIELAB-values
    • C01P2006/62—L* (lightness axis)
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/60—Optical properties, e.g. expressed in CIELAB-values
    • C01P2006/63—Optical properties, e.g. expressed in CIELAB-values a* (red-green axis)
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/60—Optical properties, e.g. expressed in CIELAB-values
    • C01P2006/64—Optical properties, e.g. expressed in CIELAB-values b* (yellow-blue axis)
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/02—Elements
    • C08K3/04—Carbon
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/34—Silicon-containing compounds
    • C08K3/36—Silica

Definitions

  • the present invention relates to a paint comprising carbon black, especially carbon black originating from the pyrolysis of scrap rubber, i.e. tyres.
  • the invention furthermore relates to the use of a carbon black powder originating from tyres.
  • Another method for manufacturing a carbon black paint that includes a pre-treatment step, wherein the pre-treatment step is a step of breaking carbon black particles apart with a high shear force, such as a kneading step using a kneader or a pressure kneader or milling step using a triple roll mill or twin roll mill.
  • the pre-treatment step it is critical how to break carbon black particles apart easily to attain a paint.
  • Tyre recycling or rubber recycling is the process of recycling tyres (generally vehicles' tyres) that are no longer suitable for use on vehicles due to wear or irreparable damage (such as punctures). These tyres are also known as 'End-of- Life' (ELT) tyres. These tyres are among the largest and most problematic sources of waste, due to the large volume produced and their durability. Recycling tyres is, however, a difficult and costly process and as a result millions of tyres every year are worn out and accumulated, often in landfill sites. Scrap tyres are bulky and they take up a significant amount of space, even if compacted. Furthermore such used tyres also cause air pollution if burned.
  • tyres generally vehicles' tyres
  • EHT 'End-of- Life'
  • Pyrolysis uses heat in the absence of oxygen to decompose the tyre to yield steel, volatile gases and carbonaceous char.
  • US5037628 discloses a pyrolysis method for reclaiming carbonaceous materials from scrap tyres by pyrolyzing the scrap tyres in a one step pyrolysis process to form a char material.
  • US20021 19089 describes a one stage process for pyrolyzing scrap tyres involving the use of a rotating auger.
  • the carbon black product has an average particle size of 0.125 mm making the product only suitable for low grade applications.
  • US 2008286192 describes a batch process for the two-stage pyrolysis of tyres.
  • the char material is not milled but used directly in rubber formulations.
  • WO 2013/095145 in the name of the present inventors discloses a process of pyrolyzing scrap tyres to produce a char material that can be milled to produce a carbon black powder that can be used as a filler or reinforcing agent in a rubber composition, an ink, a paint, a bitumen, a thermoplastic composition or a thermoplastic elastomer.
  • WO 2013/095145 does not disclose the specific amount of the carbon black powder to be used, let alone the specific properties of the final product containing carbon black powder.
  • WO 2013/095145 does not provide specific properties of the carbon black powder with regard to the specific application of such a carbon black powder in a black paint.
  • Another aspect or feature of the present invention is to provide a carbon black powder for use as filler in paints, especially automotive paints, having improved properties, such as high degree of jet blackness.
  • Another aspect or feature of the present invention is to provide a carbon black powder for use as filler in paints, especially automotive paints, having improved properties, such as low yellow undertone.
  • Another object of the present invention is to provide carbon black powder for use as a filler in paints, especially automotive paints, wherein no undispersed particles or other physical disturbances visible to the naked eye are present when a drop of paint was poured on a sheet of transparent plastic, allowed to run and held up to a halogen light (often referred to as a "pour-down test" in the paint industry).
  • the present invention thus relates to a paint, comprising a basecoat and usual additives, such as carbon black powder, wherein the amount of said carbon black powder originating from pyrolysed tyres is in the range of 0.001 wt.% to 12 wt.%, on basis of the total weight of said paint, wherein said carbon black powder comprises a) 60-98 wt. % of carbon black, b) less than 2.0 wt. % of volatiles and c) 0-30 wt.
  • % of silica based on the total weight of said carbon black powder, and said paint having a value for dl_* (lightness scale) in a range of less than -2,70, a value for da* (red/green scale) in a range of more than 0,90, and a db* (yellow/blue scale) in a range of less than 1 ,00, all data measured at an angle of reflection of 25°, 45° and 75°, in a white reference basecoat paint using an amount of carbon black powder of 0.1 wt.%, on basis of the total weight of said paint, following the method described herein, wherein said pyrolysed tyres account for more than 90 % by weight of truck tyres, based on the total weight of pyrolysed tyres.
  • dl_* lightness scale
  • da* red/green scale
  • db* yellow/blue scale
  • the carbon black powder according to the present invention originates predominantly from truck tyres, especially more than 90 % by weight, preferably more than 95 % by weight, even more preferably more than 98% by weight, of the pyrolysed tyres originates from pyrolysed truck tyres, based on the total weight of the pyrolysed tyres.
  • truck tyres especially more than 90 % by weight, preferably more than 95 % by weight, even more preferably more than 98% by weight, of the pyrolysed tyres originates from pyrolysed truck tyres, based on the total weight of the pyrolysed tyres.
  • 10 tons of tyres are to be pyrolysed
  • at least 9 tons thereof are truck tyres.
  • the remaining part of the tyres comprises mainly car tyres.
  • the present inventors found that such paint shows an unexpected benefit regarding high colour strength, a high degree of jet blackness combined with significantly less yellow undertone.
  • the present inventors assume that the carbon black powder as mentioned above provides a unique "colour space" and thereby provides solutions to on-going automotive customer requests to improve the level of jet blackness and reduced levels of undertone deviations.
  • the percentage reflectance, measured over a wavelength range of 400 - 700 nm, of the present paint is lower than 0,5.
  • the percentage reflectance, measured over a wavelength range of 400 - 700 nm, of the present paint is in a range of 0,3 to 0,45, wherein said reflectance measured at a wavelength around 420-480 nm is lower than said reflectance measured at a wavelength around 640-680 nm.
  • the carbon content of the carbon black powder is within a range of from 85 to 94 wt.%, based on the total weight of the carbon black powder.
  • the total ash content of the carbon black powder is within a range of from 6 to 15 wt.%, based on the total weight of the carbon black powder.
  • the present paint further comprises zinc oxide in an amount of 1 -5 wt. %, based on the total weight of said carbon black powder, and/or zinc sulphide in an amount of 1 -5 wt. %, based on the total weight of said carbon black powder, preferably wherein the ratio between said zinc oxide and said zinc sulphide is between 1 : 10 to 10: 1 , preferably between 1 :2 and 2: 1 .
  • the carbon black powder used in the paint according to the present invention has a particle size distribution of preferably D99 less than 30 ⁇ and D50 less than 6 ⁇ , D99 less than 20 ⁇ and D50 less than 4 ⁇ , more preferably D99 less than 9 ⁇ and D50 less than 3 ⁇ , even more preferably more preferably D99 less than 4 ⁇ and D50 less than 0.3 ⁇ .
  • the present carbon black powder has preferably an average primary particle size in a range of 25 to 40 nanometres, preferably an average particle size distribution in a range of 10 to 70 nanometres, preferably STSA surface area (statistical thickness surface area) in a range of 60 - 80 m2/g, preferably BET nitrogen surface area in a range of 75 - 95 m2/g, preferably a TEM EMSA surface area in a range of 72, 1 - 92 m2/g, and preferably OAN (oil absorption number) in a range of 68 - 88 m3/kg.
  • BET surface areas can be measured according to ASTM D- 6556-2010.
  • the primary particle size can be measured according to ASTM D-6556- 2010.
  • Oil absorption is measured according to ASTM D-2414-2012.
  • the particle size distribution can also be determined using dry or wet laser diffraction on an instrument such as a Malvern Mastersizer S Ver 2.19.
  • the paint according to present further comprises 0.1 -10 wt. % binding agent, based on the total weight of said carbon black powder, wherein said binding agent is starch, preferably pre-gelatinized starch.
  • the present carbon black originates from two stages pyrolysed scrap rubber, comprising the following steps:
  • step a) a second pyrolysis stage of said intermediate char material to obtain said carbon black, wherein at least one of the stages a) or b) is carried out in a rotary kiln, wherein in step a) the percentage of volatiles originally present in said scrap rubber is reduced to an amount of about 5-10 wt.%, based on the total weight of the intermediate char material, and wherein the intermediate char material is introduced in the second pyrolysis stage b) in which the percentage volatiles is further reduced to a percentage of less than 2.0 wt.
  • the present inventors found that the present truck tyre feedstock must be pre-treated such that the fibre content is preferably reduced to less than 2 wt.% and the steel content is preferably reduced to less than 0.1 %, based on the weight of the feedstock.
  • the mechanical processes required to achieve this feedstock composition preferably results in the reduction of the average feedstock particle size to less than 10mm.
  • the present inventors found that an important difference is the fibre content.
  • Truck tyres contain significantly less fibre content than passenger car tyres.
  • a typical car tyre contains around 8 -10 wt.% fibre whereas most truck tyres contain no fibre content. Therefore after the removal of steel from passenger car tyres the percentage wt.% of fibre is around 12 - 14%.
  • Introducing fibre into the pyrolysis process results in its conversion to a hydrocarbon gas (approx. 60%) plus pyrolytic carbon black (approx.40%).
  • pyrolytic carbon black has undesirable pigmenting qualities that - in combination with the higher ash content of carbon black produced from passenger car tyres - result in dilution of the reclaimed furnace carbon black content and a corresponding reduction of jetness (by about 10 - 15%).
  • the present invention further relates to the use of a carbon black powder originating from tyres, especially pyrolysed tyres, wherein said pyrolysed tyres account for more than 90 % by weight of truck tyres, based on the total weight of pyrolysed tyres, said carbon black powder comprising a) 60-98 wt. % of carbon black, b) less than 2.0 wt. % of volatiles and c) 0-30 wt. % of silica, based on the total weight of said carbon black powder, in a paint in an amount of 0.001 wt.% to 12 wt.%, on basis of the total weight of said paint, for reducing the level of undertone deviation.
  • the present invention further relates to the use of a carbon black powder in a paint for improving the colour strength and the degree of jet blackness.
  • the present invention further relates to the use of a carbon black powder in a paint for improving the degree of jet blackness.
  • the present invention relates to the use of a carbon black powder in a paint according wherein said paint is an automotive paint, especially wherein said amount of carbon black is in a range of 1 ,5 wt.% to 5 wt.%, on basis of the total weight of said paint.
  • WO 2013/095145 teaches, in the first pyrolysis stage, the percentage of volatiles present in said scrap rubber is reduced to an amount of about 5-10 wt.% based on the total weight of the intermediate char material, and wherein the intermediate char material is introduced in the second pyrolysis stage b) in which the percentage volatiles is further reduced to a percentage of less than 2.5 wt.%, preferably less than 2.0 wt. %, based on the total weight of the char material.
  • WO 2013/095145 teaches that the temperature during the first pyrolysis stage a) is preferably 500-800 °C, more preferably 600-700 °C and even more preferably 630-670 °C, wherein the temperature during the second pyrolysis stage b) is preferably between 550-800 °C, more preferably 650-750 °C and even more preferably 680-720 °C.
  • WO 2013/095145 teaches that the residence time of each the first pyrolysis stage a) and the second pyrolysis stage b) are independently between 20-50 minutes, preferably 25-45 minutes and more preferably 30-40 minutes.
  • WO 2013/095145 teaches that in the second pyrolysis stage a) the percentage volatiles is reduced to less than 1.0 wt.% based on the total weight of the char material, especially the milling of step ii) is carried out by jet milling using compressed air or steam.
  • the present inventors found that for obtaining a carbon black powder to be used in the paint according to the present a preferred embodiment of the step of jet milling is applied .
  • the compressed air used for the jet milling step is preferably be cooled to a temperature of between 20 and 60 degC.
  • the milling pressure step is preferably between 2.8 and 3.5 bars.
  • WO 2013/095145 teaches that the pelletizing of step iii) is carried out by mixing a binding agent with the carbon black powder obtained in step ii) and pelletizing the mixture thus obtained to obtain a pelletized carbon black powder, wherein the binding agent is pre-gelatinized starch.
  • carbon black' as used here relates to a black finely divided form of amorphous carbon. I n other words, a virtually pure elemental carbon in the form of colloidal particles. Carbon black is, for example, produced by incomplete combustion or thermal decomposition of gaseous or liquid hydrocarbons under controlled conditions. Its physical appearance is that of a black, finely divided pellet or powder. Its use in tires, rubber and plastic products, printing inks and coatings is related to properties of specific surface area, particle size and structure, conductivity and colour.
  • carbon black does not include soot (finely divided carbon deposited from flames during the incomplete combustion of organic substances such as coal) or black carbon (pure carbon in several linked forms obtained through the incomplete combustion of carbon-containing materials).
  • Soot and black carbon are the two most common, generic terms applied to various unwanted carbonaceous by-products resulting from the incomplete combustion of carbon-containing materials, such as oil, fuel oils or gasoline, coal, paper, rubber, plastics and waste material.
  • Soot and black carbon also contain large quantities of dichloromethane and toluene extractable materials, and can exhibit an ash content of 50% or more.
  • carbon black powder' is meant a powdery form of carbon black. In other words, fine particulates of carbon black.
  • Carbon black powder in the composition according to the invention obtained by milling of a char material, the carbon black powder comprising, for example, carbon black, residue material, silica, volatiles and water.
  • 'scrap rubber derived carbon black powder is meant a carbon black powder derived from a scrap rubber, preferably a carbon black powder that is obtained from the pyrolysis of a scrap rubber.
  • a 'rotary kiln' is a cylindrical vessel, inclined slightly to the horizontal, which is rotated about its axis.
  • the material to be processed is fed into the upper end of the cylinder.
  • material gradually moves down towards the lower end, and may undergo a certain amount of stirring and mixing.
  • Hot gases pass along the kiln.
  • the gases may pass along the kiln in the same direction as the process material (concurrent), but preferably pass along the kiln in the opposite direction (counter-current).
  • the hot gases may be generated in an external furnace, or may be generated inside the kiln, e.g. by a flame.
  • 'volatile' is meant any element or compound that is removed in a gaseous state during the pyrolysis of scrap rubber. In other words, an element or compound that is readily evaporated. Typically the volatiles released during pyrolysis can be classified as non-condensable and condensable.
  • D99 the 99 th and 50 th percentile of the particle size distribution, respectively, as measured by volume.
  • the D99 describes a sample of particles whereby 99 vol. % of the particles have a size smaller than the stated particle size distribution.
  • a D99 ⁇ x micrometre is meant that 99 vol.% of the particles has a size of less than x micrometre.
  • the D50 describes a sample of particles whereby 50 vol. % of the particles have a size smaller than the stated particle size distribution.
  • a D50 ⁇ x micrometre is meant that 50 vol. % of the particles has a size of less than x micrometre.
  • the particle size distribution can be determined according to the method disclosed in: ASTM D3849 - 201 1 .
  • the invention will be further elucidated by means of several embodiments.
  • Fig. 1 shows spectral data of Test Toner, wavelength values measured in nanometers, measured on an X-Rite Spectrophotometer at an angle of 45°.
  • Fig. 2 shows spectral data curve of Test Toner, based on data provided in Fig. 1 .
  • Fig. 3 shows color results determined in white automotive reference basecoat paint.
  • Fig. 4 shows dl_* comparisons (lightness).
  • Fig. 5 shows da* comparisons (+red / -green).
  • Fig. 6 shows db* comparisons (+yellow / -blue).
  • Fig. 7 shows dl_* - db* comparisons using average values of all three angles.
  • the present carbon black pigment produced from end-of-life tyres also called JetBlack-100 hereafter, was compared against the following three specialty grades of carbon blacks commonly used for pigmenting automotive paints by an international paint manufacturer:
  • test toner FW 200 Black (post-oxidized 'gas black'), from De Gussa. The QC results of test toner are as follows:
  • NVC Non Volatile Content
  • Test toners using JetBlack-100 and the three reference carbon blacks were made up in a balanced resin blend of polyester, melamine and cellulose acetate butyrate (CAB).
  • the solids content of the toners was nominally 35 wt.%.
  • the carbon black pigment content was 4 wt.% (based on wet paint).
  • the test toner samples were analyzed for color strength using an X-Rite Spectrophotometer. Comparative results are given below. Color Strength values were normalized according to those of the JetBlack-100 test toner and were calculated by the software of the Spectrophotometer according to a specific method.
  • JetBlack-100 presents the highest magnitude of color strength when compared to the three reference pigments.
  • the Raven Black 410 presents the weakest color strength.
  • the four test toners were used to tint a white reference basecoat paint using an addition of 0.1 wt.%.
  • the four tinted white samples were then analyzed for comparative dL* (lightness scale), da* (red/green scale) and db* (yellow/blue scale) values using an X-Rite Spectrophotometer. Measurements were taken at three angles of reflection (25°, 45° and 75°).
  • Fig.1 shows spectral data of Test Toner, wavelength values measured in nanometers, measured on an X-Rite Spectrophotometer at an angle of 45°.
  • Fig.2 shows spectral data curve of Test Toner, based on data provided in Fig. 1 , and this Figure 2 demonstrates that the percentage reflectance, measured over a wavelength range of 400 - 700 nm, is lower than 0,5.
  • Raven 410 (lamp black), from Birla Carbon, Special Black 100 (oxidized 'furnace black'), from De Gussa, and FW 200 Black (post-oxidized 'gas black'), from De Gussa, and the present JetBlack-100 is based on % (color) Strength WSUM.
  • This strength method is sometimes listed as integrated strength.
  • the strength WSUM represents the ration of sums (K/S) data multiplied by the sum of weighted observer/illumination at all wavelengths for the sample in relation to the standard. It will be expressed in percent.
  • Fig.3 shows color results determined in white automotive reference basecoat paint, which data have been shown graphically in Fig 4, i.e. dL* comparisons (lightness), in Fig 5, i.e.
  • JetBlack-100 was considered closest to De Gussa's FW 200 specialty carbon black but importantly with higher color strength and a higher degree of jet blackness combined with significantly less yellow undertone.
  • the use of JetBlack-100 according to the present invention provides a unique "color space" and thereby has provides solutions to ongoing automotive customer requests to improve the level of jet blackness and reduced levels of undertone deviations.

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
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  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Inorganic Chemistry (AREA)
  • Paints Or Removers (AREA)

Abstract

La présente invention porte sur une peinture qui comporte du noir de carbone provenant de la pyrolyse de déchets de caoutchouc provenant de pneus de camion. L'invention porte en outre sur l'utilisation d'une poudre de noir de carbone provenant de pneus de camion. L'utilisation du présent noir de carbone permet d'obtenir une haute intensité de couleur et un haut degré de coloration noir de jais combinés à une nuance de fond jaune considérablement moindre, fournissant ainsi un « espace couleur » particulier.
PCT/NL2014/050869 2013-12-17 2014-12-17 Peinture comportant du noir de carbone WO2015093947A1 (fr)

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NL2011973A NL2011973C2 (en) 2013-12-17 2013-12-17 Paint comprising carbon black.
NLNL2011973 2013-12-17

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WO2019046320A1 (fr) * 2017-08-28 2019-03-07 Monolith Materials, Inc. Systèmes et procédés de génération de particules
US10370539B2 (en) 2014-01-30 2019-08-06 Monolith Materials, Inc. System for high temperature chemical processing
US10618026B2 (en) 2015-02-03 2020-04-14 Monolith Materials, Inc. Regenerative cooling method and apparatus
US10808097B2 (en) 2015-09-14 2020-10-20 Monolith Materials, Inc. Carbon black from natural gas
US11149148B2 (en) 2016-04-29 2021-10-19 Monolith Materials, Inc. Secondary heat addition to particle production process and apparatus
US11203692B2 (en) 2014-01-30 2021-12-21 Monolith Materials, Inc. Plasma gas throat assembly and method
US11304288B2 (en) 2014-01-31 2022-04-12 Monolith Materials, Inc. Plasma torch design
US11453784B2 (en) 2017-10-24 2022-09-27 Monolith Materials, Inc. Carbon particles having specific contents of polycylic aromatic hydrocarbon and benzo[a]pyrene
WO2022218710A1 (fr) * 2021-04-13 2022-10-20 Orion Engineered Carbons Gmbh Noirs de carbone à base de matières premières renouvelables de noir de carbone
US11492496B2 (en) 2016-04-29 2022-11-08 Monolith Materials, Inc. Torch stinger method and apparatus
WO2023036854A1 (fr) * 2021-09-13 2023-03-16 Basf Coatings Gmbh Composition de revêtement comprenant un pigment durable et procédé de revêtement d'un substrat l'utilisant
US11665808B2 (en) 2015-07-29 2023-05-30 Monolith Materials, Inc. DC plasma torch electrical power design method and apparatus
US11760884B2 (en) 2017-04-20 2023-09-19 Monolith Materials, Inc. Carbon particles having high purities and methods for making same
WO2023208654A1 (fr) * 2022-04-29 2023-11-02 Orion Engineered Carbons Gmbh Noirs de carbone à base de charges d'alimentation de noir de carbone renouvelables
US11926743B2 (en) 2017-03-08 2024-03-12 Monolith Materials, Inc. Systems and methods of making carbon particles with thermal transfer gas
US11939477B2 (en) 2014-01-30 2024-03-26 Monolith Materials, Inc. High temperature heat integration method of making carbon black
US11987712B2 (en) 2015-02-03 2024-05-21 Monolith Materials, Inc. Carbon black generating system

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Cited By (23)

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Publication number Priority date Publication date Assignee Title
US11591477B2 (en) 2014-01-30 2023-02-28 Monolith Materials, Inc. System for high temperature chemical processing
US10370539B2 (en) 2014-01-30 2019-08-06 Monolith Materials, Inc. System for high temperature chemical processing
US11203692B2 (en) 2014-01-30 2021-12-21 Monolith Materials, Inc. Plasma gas throat assembly and method
US11939477B2 (en) 2014-01-30 2024-03-26 Monolith Materials, Inc. High temperature heat integration method of making carbon black
US11866589B2 (en) 2014-01-30 2024-01-09 Monolith Materials, Inc. System for high temperature chemical processing
US11304288B2 (en) 2014-01-31 2022-04-12 Monolith Materials, Inc. Plasma torch design
US11998886B2 (en) 2015-02-03 2024-06-04 Monolith Materials, Inc. Regenerative cooling method and apparatus
US11987712B2 (en) 2015-02-03 2024-05-21 Monolith Materials, Inc. Carbon black generating system
US10618026B2 (en) 2015-02-03 2020-04-14 Monolith Materials, Inc. Regenerative cooling method and apparatus
US11665808B2 (en) 2015-07-29 2023-05-30 Monolith Materials, Inc. DC plasma torch electrical power design method and apparatus
US10808097B2 (en) 2015-09-14 2020-10-20 Monolith Materials, Inc. Carbon black from natural gas
US12012515B2 (en) 2016-04-29 2024-06-18 Monolith Materials, Inc. Torch stinger method and apparatus
US11492496B2 (en) 2016-04-29 2022-11-08 Monolith Materials, Inc. Torch stinger method and apparatus
US11149148B2 (en) 2016-04-29 2021-10-19 Monolith Materials, Inc. Secondary heat addition to particle production process and apparatus
US11926743B2 (en) 2017-03-08 2024-03-12 Monolith Materials, Inc. Systems and methods of making carbon particles with thermal transfer gas
US11760884B2 (en) 2017-04-20 2023-09-19 Monolith Materials, Inc. Carbon particles having high purities and methods for making same
WO2019046320A1 (fr) * 2017-08-28 2019-03-07 Monolith Materials, Inc. Systèmes et procédés de génération de particules
US11453784B2 (en) 2017-10-24 2022-09-27 Monolith Materials, Inc. Carbon particles having specific contents of polycylic aromatic hydrocarbon and benzo[a]pyrene
WO2022218710A1 (fr) * 2021-04-13 2022-10-20 Orion Engineered Carbons Gmbh Noirs de carbone à base de matières premières renouvelables de noir de carbone
CN116406407A (zh) * 2021-09-13 2023-07-07 巴斯夫涂料有限公司 包含可持续颜料的涂料组合物和使用其涂覆基材的方法
JP2023547761A (ja) * 2021-09-13 2023-11-14 ビーエーエスエフ コーティングス ゲゼルシャフト ミット ベシュレンクテル ハフツング 持続可能な顔料を含むコーティング組成物、及びそれを使用した基材のコーティング方法
WO2023036854A1 (fr) * 2021-09-13 2023-03-16 Basf Coatings Gmbh Composition de revêtement comprenant un pigment durable et procédé de revêtement d'un substrat l'utilisant
WO2023208654A1 (fr) * 2022-04-29 2023-11-02 Orion Engineered Carbons Gmbh Noirs de carbone à base de charges d'alimentation de noir de carbone renouvelables

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