EP0999998A1 - Procede de mise en couleurs de materiaux de construction et d'asphalte - Google Patents

Procede de mise en couleurs de materiaux de construction et d'asphalte

Info

Publication number
EP0999998A1
EP0999998A1 EP98936429A EP98936429A EP0999998A1 EP 0999998 A1 EP0999998 A1 EP 0999998A1 EP 98936429 A EP98936429 A EP 98936429A EP 98936429 A EP98936429 A EP 98936429A EP 0999998 A1 EP0999998 A1 EP 0999998A1
Authority
EP
European Patent Office
Prior art keywords
building materials
mixed
pigment
granules
asphalt
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.)
Withdrawn
Application number
EP98936429A
Other languages
German (de)
English (en)
Inventor
Adolf M. Veit
Heinz F. Zoch
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.)
Chemische Werke Brockhues AG
Original Assignee
Chemische Werke Brockhues AG
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 Chemische Werke Brockhues AG filed Critical Chemische Werke Brockhues AG
Publication of EP0999998A1 publication Critical patent/EP0999998A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • C09C3/00—Treatment in general of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling properties
    • C09C3/04—Physical treatment, e.g. grinding or treatment with ultrasonic vibrations
    • C09C3/045—Agglomeration, granulation, pelleting
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
    • C04B18/02—Agglomerated materials, e.g. artificial aggregates
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L95/00—Compositions of bituminous materials, e.g. asphalt, tar, pitch

Definitions

  • the invention relates to processes for coloring building materials and asphalt using pigment granules. More particularly, the invention relates to such processes for coloring concrete using pigment granules which contain inorganic pigments such as iron oxide pigments.
  • DE-Al 36 19 363 describes pigment granules which are useful for the coloring of building materials for the first time which may include pigments other than carbon.
  • microgranules are produced from such pigments by mixing with binders and subsequent spray drying.
  • the binding agent is essentially an organic binding agent, such as lignin sulfonate.
  • Binder inorganic compounds in particular oxides and / or hydroxides and corresponding hydrates used. Such products are often not without problems in practice and lead to incomplete dispersion when incorporated into concrete and the like.
  • EP-AI 0 567 882 describes build-up, compacting and spray granules with binders such as, in particular, machine oil, wax, paraffin and the like, which are intended for coloring asphalt.
  • binders such as, in particular, machine oil, wax, paraffin and the like, which are intended for coloring asphalt.
  • Binders should be able to use substances such as lignin sulfonate, molasses, starch and the like. According to this disclosure, substances such as lignin sulfonate cannot be used alone as binders.
  • Granules with very good color strengths and easy to disperse are often too soft and disintegrate even before incorporation into the building material or asphalt, which leads to increased dust formation and residues in the Packaging, can lead to reduced fluidity and correspondingly frequent incorrect dosing.
  • Spray granulation has established itself in practice among the many possibilities of structure granulation, whereas, for example, fluid bed granulation, which is theoretically completely comparable, has so far not produced any usable granules.
  • a first essential aspect of the invention is concerned with the production of pressed granules which are suitable for the processes according to the invention.
  • a pigment granulate is used for coloring building materials and asphalt, which is actually a press granulate.
  • These granules comprise at least one powdery pigment, in particular an iron oxide pigment, and at least one wetting agent, binder and / or disintegrant with which the pigment powder is mixed.
  • the mixture is then subjected to a compacting step at line forces (as defined and described in EP 0 650 939) of more than 15 kN / cm, preferably by using a conventional press granulation method.
  • line forces as defined and described in EP 0 650 939
  • the compacting step or pressing step can also be carried out with the device mentioned in EP 0 650 939, provided that the pressing pressure is set accordingly high.
  • the resulting flakes are crushed, preferably by grinding on a sieve granulator. Similar to the prior art mentioned, this grinding is carried out so thoroughly that the flakes are broken down into small granule nuclei or powder.
  • the comminution product can then be granulated, in particular by re-rolling on a turntable, otherwise also in a rotating drum, as is known in the prior art. This creates a build-up granulate, which is then mixed with the building material or asphalt to color it.
  • the wetting agent or binder or disintegrant for this granulate is selected so that the build-up granulate disintegrates with the desired dispersing action.
  • Water-soluble wetting agents and binders such as, in particular, lignin sulfonate and the like, are particularly suitable; binders with an explosive effect or real explosives are also suitable.
  • These are mostly highly hydrophilic polymers with a correspondingly high absorption capacity for water, for example certain cellulose derivatives, dextrans, crosslinked polyvinylpyrrolidone and the like.
  • hydrophilizing agents such as PEG fatty acid esters and the like can be used.
  • Certain inorganic constituents such as gas-reactive systems under the influence of water, can also be used.
  • dry binders such as lactose, sugar and the like will be used less preferably.
  • wetting agent binder and / or disintegrant
  • binder / or disintegrant
  • disintegrant is such that the pressed granulate is dissolved sufficiently quickly and completely.
  • the type of pigment powder, the pressure and the aftertreatment also play a role here, so that each one suitable mixture is determined by appropriate simple experiments.
  • pigment granules are used for the coloring of building materials and asphalt, which in addition to at least one powdery pigment in turn contains at least one wetting agent, binder and / or disintegrant, these also being selected as already defined above.
  • Pigment powder and wetting, binding or disintegrating agents are mixed thoroughly, and the mixture is then subjected to a compacting or pressing step.
  • this method step can be carried out from a slight compacting, with minimal line forces, to a real compression at line forces well above 15 kN / cm.
  • the flakes obtained in this way are granulated with partial comminution, in particular by grinding on a sieve granulator to build up a granulate. The remaining fines are separated; the granules thus obtained can be mixed directly with the building materials.
  • a pigment granulate is used for coloring building materials and asphalt, which is obtained from a pigment powder and at least one wetting agent, binder and / or disintegrant by pelletizing the corresponding powder mixture by extrusion and subsequent cutting. The pellets are then mixed as finished pigment granules with the building materials.
  • a multi-component extruder is preferably used for the extrusion, and in order to avoid abrasion during filling, transport and the like, the pellets obtained in this way are preferably produced using a rounding unit rounded.
  • Processing in a ring die press which has variable slip between the ring die and the corrugated disc is particularly suitable for the production of such strand granules.
  • cylindrical strands can be pressed, which can then be crushed in the usual manner and then rounded to spherical granules in the rounding unit.
  • a perforated roller device can also be used in extrusion, the press pellets being produced by stripping on the inside of the roller. Even in the case of such initially elongated pellets, spherical granules can be produced by post-processing in the rounding unit and can be further processed practically without abrasion.
  • building materials and asphalt are colored with pigment granules which are obtained from suitable powdery pigments, again in particular iron oxide pigments, and at least one release agent.
  • the release agent can be inorganic or organic; it can be, for example, very finely divided silicon dioxide (“Aerosil”), or else an organic release agent such as talc. It is preferred not to use hydrophobic release agents.
  • Pigment powder and release agent are mixed and briquetted according to this aspect of the invention. The pigment briquettes thus obtained can be mixed directly with the building materials.
  • the size of the briquettes is dimensioned such that disintegration times and dispersion are set appropriately for the application.
  • small and not too compact briquettes will be used, i.e. keep the pressure as low as possible during the briquetting step.
  • suitable pressed products can be produced by tableting, using appropriate release agents, wetting agents, binders and / or disintegrants.
  • building materials and asphalt are colored with pigment granules, which in turn are obtained from a pigment powder, in particular an inorganic pigment such as an iron oxide pigment, and a wetting agent, binder, disintegrant and / or release agent.
  • a pigment powder in particular an inorganic pigment such as an iron oxide pigment
  • a wetting agent, binder, disintegrant and / or release agent According to this aspect of the invention, however, these are processed with a liquid to form a flowable intermediate product.
  • the liquid can be water or an organic solvent.
  • the consistency of the flowable intermediate product is preferably set pasty.
  • the intermediate product is then reduced in size and dried in the form of fine droplets, for example by contact heating.
  • the particles obtained in this way can be used directly for mixing with the building materials.
  • handling and incorporation can be carried out according to the invention in the building material or asphalt, the dispersing properties, the color density and the like are advantageously further influenced in that the granules are treated on the surface before being mixed with the building materials.
  • the granulate can be coated with a release agent and / or a wetting agent. These agents will be chosen so that they do not lead to clumping and caking of the granules in the packaging, so that they are not too hygroscopic. On the other hand, a wetting-promoting effect is desired.
  • the granules according to the invention can correspond to the known products with regard to the granule size.
  • the water content of the granules will preferably be below 5% by weight, in particular below 3% by weight. Such water contents can easily be adjusted on the production side.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Ceramic Engineering (AREA)
  • Polymers & Plastics (AREA)
  • Medicinal Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Road Paving Structures (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Processes Of Treating Macromolecular Substances (AREA)
  • Pigments, Carbon Blacks, Or Wood Stains (AREA)
  • Processing Of Solid Wastes (AREA)

Abstract

L'invention concerne un procédé de mise en couleurs de matériaux de construction et d'asphalte par des granulés pigmentés, différents granulés comprimés et d'édification étant utilisés.
EP98936429A 1997-07-23 1998-07-16 Procede de mise en couleurs de materiaux de construction et d'asphalte Withdrawn EP0999998A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19731698 1997-07-23
DE19731698A DE19731698A1 (de) 1997-07-23 1997-07-23 Verfahren zur Einfärbung von Baustoffen und Asphalt
PCT/EP1998/004442 WO1999005074A2 (fr) 1997-07-23 1998-07-16 Procede de mise en couleurs de materiaux de construction et d'asphalte

Publications (1)

Publication Number Publication Date
EP0999998A1 true EP0999998A1 (fr) 2000-05-17

Family

ID=7836676

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98936429A Withdrawn EP0999998A1 (fr) 1997-07-23 1998-07-16 Procede de mise en couleurs de materiaux de construction et d'asphalte

Country Status (7)

Country Link
EP (1) EP0999998A1 (fr)
AU (1) AU8542798A (fr)
CA (1) CA2295696A1 (fr)
DE (1) DE19731698A1 (fr)
HU (1) HUP0002666A2 (fr)
PL (1) PL337829A1 (fr)
WO (1) WO1999005074A2 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19950712A1 (de) * 1999-10-21 2001-04-26 Vti Thueringer Verfahrenstechn Farbpigmentgranulat
DE10319483A1 (de) 2003-04-30 2004-11-18 Brockhues Gmbh & Co. Kg Schnell zerfallendes Pigmentkonzentrat
WO2008012245A2 (fr) * 2006-07-24 2008-01-31 Basf Se Préparations pigmentaires sous forme de comprimés
DE102007023912A1 (de) 2007-05-23 2008-11-27 Lanxess Deutschland Gmbh Pigmentzubereitungen von pastöser oder gelförmiger Konsistenz
DE102007023913A1 (de) 2007-05-23 2008-11-27 Lanxess Deutschland Gmbh Pigmentzubereitungen von pastöser oder gelförmiger Konsistenz
DE102008045121A1 (de) 2008-09-01 2010-03-04 Lanxess Deutschland Gmbh Pigmentgranulate, die anorganische Filterhilfsmittel enthalten

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3619363A1 (de) * 1986-06-09 1987-12-10 Brockhues Chem Werke Ag Verfahren zum einfaerben von beton
DE4336613C1 (de) * 1993-10-27 1995-02-09 Bayer Ag Verfahren zur Einfärbung von Baustoffen
DE4429147A1 (de) * 1994-08-17 1996-02-22 Glatt Ingtech Gmbh Verfahren zur Herstellung von granulierten Zusatzstoffen für Baustoffe
DE19649756B4 (de) * 1996-04-18 2005-05-25 Bayer Chemicals Ag Verfahren zur Herstellung von Brikettier- und Preßgranulaten aus Rußpigmenten und deren Verwendung

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9905074A3 *

Also Published As

Publication number Publication date
PL337829A1 (en) 2000-09-11
CA2295696A1 (fr) 1999-02-04
HUP0002666A2 (hu) 2001-06-28
WO1999005074A3 (fr) 1999-04-08
AU8542798A (en) 1999-02-16
DE19731698A1 (de) 1999-01-28
WO1999005074A2 (fr) 1999-02-04

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