WO1997009284A1 - Method for producing coloured concrete bodies - Google Patents

Method for producing coloured concrete bodies Download PDF

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Publication number
WO1997009284A1
WO1997009284A1 PCT/EP1996/003875 EP9603875W WO9709284A1 WO 1997009284 A1 WO1997009284 A1 WO 1997009284A1 EP 9603875 W EP9603875 W EP 9603875W WO 9709284 A1 WO9709284 A1 WO 9709284A1
Authority
WO
WIPO (PCT)
Prior art keywords
pigment
concrete
pigments
added
coloured
Prior art date
Application number
PCT/EP1996/003875
Other languages
French (fr)
Inventor
Andreas Drechsler
Daniel Neupert
Silke Werner
Original Assignee
Braas Gmbh
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=7771522&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=WO1997009284(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Priority to NZ318392A priority Critical patent/NZ318392A/en
Priority to PL96325238A priority patent/PL187414B1/en
Priority to DE69605930T priority patent/DE69605930T2/en
Priority to AU69868/96A priority patent/AU695856B2/en
Priority to DK96931014T priority patent/DK0848691T3/en
Priority to AT96931014T priority patent/ATE188197T1/en
Priority to BR9610124A priority patent/BR9610124A/en
Application filed by Braas Gmbh filed Critical Braas Gmbh
Priority to EP96931014A priority patent/EP0848691B1/en
Priority to JP51086097A priority patent/JP3263398B2/en
Publication of WO1997009284A1 publication Critical patent/WO1997009284A1/en
Priority to US09/036,463 priority patent/US6090329A/en
Priority to NO980977A priority patent/NO980977L/en
Priority to US09/503,672 priority patent/US6268410B1/en
Priority to GR20000400456T priority patent/GR3032756T3/en

Links

Classifications

    • 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
    • C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
    • C04B40/0028—Aspects relating to the mixing step of the mortar preparation
    • C04B40/0039—Premixtures of ingredients
    • 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
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
    • C04B2111/00586—Roofing materials
    • C04B2111/00594—Concrete roof tiles

Definitions

  • the invention relates to a method for producing coloured concrete bodies, particularly coloured concrete roof tiles, whereby pigment is added to the unprocessed concrete mix.
  • Coloured concrete bodies are used, for example, as roof tiles, pavers, slabs, etc.
  • inorganic preferably mineral, pigments.
  • These types of pigment have been well established for many years and have proved to be durable.
  • relatively expensive inorganic pigments are needed, in particular for the production of blue shades.
  • the colour intensity of these pigments is relatively low.
  • the invention serves this purpose in that a cement compatible aqueous polymer dispersion, in which organic pigment is dispersed, is added to the unprocessed concrete mix.
  • the unprocessed concrete mix can then be shaped into bodies and cured in the usual way.
  • the method as per the invention makes it possible to incorporate organic pigments permanently in the matrix of the concrete body, so that elutriation does not occur.
  • a dispersion is produced which contains at least dispersed organic polymer and colouring. If the colouring is dispersed as pigment in an aqueous polymer dispersion, polymer particles are deposited on the surface of the pigment particles and ultimately surround the latter. Hence the pigment particles are surrounded and protected by polymer particles. When the dispersion desiccates, the pigment particles are bound into the plastic matrix. This also applies to chemically bound pigment.
  • the dispersion is non redispersible and of high molecular weight.
  • a plastic results which cannot be converted back into a dispersion with the addition of more water.
  • the purpose of the invention is achieved, i.e. the production of permanently coloured concrete bodies.
  • Some organic pigments have a colouring power up to 20 times that of the same colour inorganic pigments. In other words, a much smaller amount of organic pigment is needed to produce the same intensity of colour.
  • a suitable cement compatible polymer dispersion preference is given to an aqueous polymer dispersion whose polymer contains styrol and/or pure acrylate.
  • any polymer dispersion which is of high molecular weight, stable in cement and non redispersible is suitable.
  • the molar mass of the typical high molecular weight polymer is about 10 6 g/Mol.
  • the polymer dispersion it is advantageous for the polymer dispersion to contain 5 - 30% by weight of the organic pigment.
  • the polymer dispersion is added to the unprocessed concrete mix in such a quantity that the pigment/cement ratio is between 0.002 and 0.05.
  • a light-fast substance such as phthalocyanine or China acridon pigment is particularly suitable as organic pigment.
  • Phthalocyanine pigment in particular can be produced in various colours, from blue copper phthalocyanine to green hexadecachlorophthalocyanine.
  • the pigment preparation can of course also contain a blend of various organic pigments, and mineral pigment can be added if required.
  • mineral pigment can be added if required.
  • the organic colouring molecules can contain substituents which, for example, make possible a copolymerisation with the dispersion polymer, so that the organic pigment is bound chemically in the polymer chain.
  • Embodiment 1 The method as per the invention is explained below using four embodiments. Embodiment 1
  • acridon pigment 100 g was dispersed in a dissolver for 15 minutes with 600 g of a styrol acrylate dispersion (LDM 6880, 50% proportion, Hoechst) . 43 g of this preparation was added to an unprocessed concrete mix of 1350 g of sand with a grain size of 0 to 3 mm, 420 g of cement CEM I 42.5 R and 109 g of water. After shaping and curing, a light violet concrete body was obtained.
  • LDM 6880 50% proportion, Hoechst
  • Embodiment 4 150 g of China acridon pigment was dispersed in a dissolver for 15 minutes with 300 g of a styrol acrylate dispersion (LDM 6880, 50% proportion, Hoechst). 63.3 g of this preparation was added to an unprocessed concrete mix of 1350 g of sand with a grain size of 0 to 3 mm, 420 g of cement CEM I 42.5 R and 109 g of water. After shaping and curing, an intense violet concrete body was obtained.
  • LDM 6880 50% proportion, Hoechst

Abstract

The invention relates to a method for producing coloured concrete bodies, particularly coloured concrete roof tiles, whereby pigment is added to the unprocessed concrete mix. In order to provide a method which makes possible the production of permanently coloured concrete bodies with reasonably priced pigments which are stable in outdoor exposure and are resistant to light, particularly UV, alkalis and heat, it is proposed that a cement compatible aqueous polymer dispersion in which organic pigment is dispersed be added to the unprocessed concrete mix. Suitable cement compatible polymer dispersions are aqueous polymer dispersions based on styrol and/or pure acrylate. Phthalocyanine or China acridon pigments are particularly suitable as organic pigments.

Description

Description
Method for producing coloured concrete bodies
The invention relates to a method for producing coloured concrete bodies, particularly coloured concrete roof tiles, whereby pigment is added to the unprocessed concrete mix.
Coloured concrete bodies are used, for example, as roof tiles, pavers, slabs, etc. Normally, such concrete bodies are coloured with inorganic, preferably mineral, pigments. Iron oxides, but also chromium oxides or spinel compounds such as cobalt aluminium oxide, are used. These types of pigment have been well established for many years and have proved to be durable. However, relatively expensive inorganic pigments are needed, in particular for the production of blue shades. Moreover, the colour intensity of these pigments is relatively low.
The purpose of this invention is to provide a method which makes it possible to produce permanently coloured concrete bodies with reasonably priced pigments which are stable in outdoor exposure and resistant to light, particularly UV, alkalis and heat.
The invention serves this purpose in that a cement compatible aqueous polymer dispersion, in which organic pigment is dispersed, is added to the unprocessed concrete mix.
The unprocessed concrete mix can then be shaped into bodies and cured in the usual way.
Organic pigments were hitherto considered unsuitable for colouring concrete bodies, as is stated by A.M. Veit in his article "Proposed ways of improving coloured concrete products" in the periodical "Betonwerk + Fertigteil-Technik", volume 11/1994, pp 92 - 100. Organic pigments cannot be properly bound into the hydraulically hardening matrix. Consequently, these pigments are gradually elutriated, and the concrete body fades with time, inevitably giving rise to complaints.
However, because of their binding into a cement compatible polymer dispersion, the method as per the invention makes it possible to incorporate organic pigments permanently in the matrix of the concrete body, so that elutriation does not occur. What is crucial for the success of the method as per the invention is that a dispersion is produced which contains at least dispersed organic polymer and colouring. If the colouring is dispersed as pigment in an aqueous polymer dispersion, polymer particles are deposited on the surface of the pigment particles and ultimately surround the latter. Hence the pigment particles are surrounded and protected by polymer particles. When the dispersion desiccates, the pigment particles are bound into the plastic matrix. This also applies to chemically bound pigment. In the case of aqueous dispersions, the dispersion is non redispersible and of high molecular weight. In other words, following desiccation of the original dispersion, a plastic results which cannot be converted back into a dispersion with the addition of more water. Hence the purpose of the invention is achieved, i.e. the production of permanently coloured concrete bodies.
Some organic pigments have a colouring power up to 20 times that of the same colour inorganic pigments. In other words, a much smaller amount of organic pigment is needed to produce the same intensity of colour.
In addition, a much greater colour intensity of the concrete body can be achieved at far lower cost than with mineral pigments.
Furthermore, shades can be achieved which are not possible with mineral pigments. As a suitable cement compatible polymer dispersion, preference is given to an aqueous polymer dispersion whose polymer contains styrol and/or pure acrylate. However, any polymer dispersion which is of high molecular weight, stable in cement and non redispersible is suitable. The molar mass of the typical high molecular weight polymer is about 106 g/Mol.
It is advantageous for the polymer dispersion to contain 5 - 30% by weight of the organic pigment.
In order to increase the colour intensity, a wetting and/or dispersing agent can be added to the preparation; also possible are admixtures to prevent the pigment from precipitating.
It is advantageous for the polymer dispersion to be added to the unprocessed concrete mix in such a quantity that the pigment/cement ratio is between 0.002 and 0.05.
A light-fast substance such as phthalocyanine or China acridon pigment is particularly suitable as organic pigment.
Phthalocyanine pigment in particular can be produced in various colours, from blue copper phthalocyanine to green hexadecachlorophthalocyanine.
The pigment preparation can of course also contain a blend of various organic pigments, and mineral pigment can be added if required. In the method as per the invention, it is also possible to permanently bind pigment such as carbon black into concrete.
The organic colouring molecules can contain substituents which, for example, make possible a copolymerisation with the dispersion polymer, so that the organic pigment is bound chemically in the polymer chain.
The method as per the invention is explained below using four embodiments. Embodiment 1
50 g of copper phthalocyanine was dispersed in a dissolver for 15 minutes with 950 g of a styrol acrylate dispersion (LDM 6880, 50% proportion, Hoechst). 16.8 g of this preparation was added to an unprocessed concrete mix of 1350 g of sand with a grain size of 0 to 3 mm, 420 g of cement CEM I 42.5 R and 135 g of water. The coloured concrete mix was shaped into a body. Following curing of the shaped body, a light blue concrete body was obtained.
Embodiment 2
300 g of copper phthalocyanine was dispersed in a dissolver for 15 minutes with 700 g of a pure acrylate dispersion (B60A, 50% proportion, Rohm & Haas) . 70 g of this preparation was added to an unprocessed concrete mix of 1350 g of sand with a grain size of 0 to 3 mm, 420 g of cement CEM I 42.5 R and 120 g of water. Concrete bodies made from this mix had an intense blue colour.
Embodiment 3
100 g of China acridon pigment was dispersed in a dissolver for 15 minutes with 600 g of a styrol acrylate dispersion (LDM 6880, 50% proportion, Hoechst) . 43 g of this preparation was added to an unprocessed concrete mix of 1350 g of sand with a grain size of 0 to 3 mm, 420 g of cement CEM I 42.5 R and 109 g of water. After shaping and curing, a light violet concrete body was obtained.
Embodiment 4 150 g of China acridon pigment was dispersed in a dissolver for 15 minutes with 300 g of a styrol acrylate dispersion (LDM 6880, 50% proportion, Hoechst). 63.3 g of this preparation was added to an unprocessed concrete mix of 1350 g of sand with a grain size of 0 to 3 mm, 420 g of cement CEM I 42.5 R and 109 g of water. After shaping and curing, an intense violet concrete body was obtained.

Claims

Claims
1. Method for producing coloured concrete bodies, particularly coloured roof tiles, whereby pigment is added to the unprocessed concrete mix, characterised in that a cement compatible aqueous polymer dispersion is added in which an organic pigment is dispersed.
2. Method as in claim 1, characterised in that the polymer of the polymer dispersion contains styrol and/or pure acrylate.
3. Method as in claim 1 or 2, characterised in that the polymer dispersion contains 5 - 30% by weight of the organic pigment.
4. Method as in one of claims 1 to 3, characterised in that the polymer dispersion contains a wetting and/or dispersing agent.
5. Method as in one of claims 1 to 4, characterised in that the ratio of the pigment to cement in the unprocessed concrete mix is between 0.002 and 0.05.
6. Method as in one of claims 1 to 5, characterised in that the organic pigment is a phthalocyanine pigment.
7. Method as in one of claims 1 to 6, characterised in that the organic pigment is a China acridon pigment.
8. Method as in one of claims 1 to 7, characterised in that the organic pigment is chemically bound in the polymer chain.
PCT/EP1996/003875 1995-09-07 1996-09-04 Method for producing coloured concrete bodies WO1997009284A1 (en)

Priority Applications (13)

Application Number Priority Date Filing Date Title
JP51086097A JP3263398B2 (en) 1995-09-07 1996-09-04 Method of manufacturing colored concrete body
BR9610124A BR9610124A (en) 1995-09-07 1996-09-04 Process for producing colored concrete bodies
DE69605930T DE69605930T2 (en) 1995-09-07 1996-09-04 METHOD FOR PRODUCING COLORED CONCRETE BODIES
AU69868/96A AU695856B2 (en) 1995-09-07 1996-09-04 Method for producing coloured concrete bodies
DK96931014T DK0848691T3 (en) 1995-09-07 1996-09-04 Process for producing colored concrete blanks
AT96931014T ATE188197T1 (en) 1995-09-07 1996-09-04 METHOD FOR PRODUCING COLORED CONCRETE BODIES
EP96931014A EP0848691B1 (en) 1995-09-07 1996-09-04 Method for producing coloured concrete bodies
NZ318392A NZ318392A (en) 1995-09-07 1996-09-04 Concrete is coloured using an aqueous polymer with pigment dispersed therein for longevity
PL96325238A PL187414B1 (en) 1995-09-07 1996-09-04 Method of making coloured concrete blocks
NO980977A NO980977L (en) 1995-09-07 1998-03-06 Process for making colored concrete bodies
US09/036,463 US6090329A (en) 1995-09-07 1998-03-06 Method of producing colored concrete bodies such as colored concrete roofing tiles
US09/503,672 US6268410B1 (en) 1995-09-07 2000-02-14 Colored concrete roofing tiles and a method for producing colored concrete bodies such as colored concrete roofing tiles
GR20000400456T GR3032756T3 (en) 1995-09-07 2000-02-24 Method for producing coloured concrete bodies

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19533081A DE19533081C2 (en) 1995-09-07 1995-09-07 Process for the production of colored concrete bodies
DE19533081.1 1995-09-07

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US09/036,463 Continuation-In-Part US6090329A (en) 1995-09-07 1998-03-06 Method of producing colored concrete bodies such as colored concrete roofing tiles

Publications (1)

Publication Number Publication Date
WO1997009284A1 true WO1997009284A1 (en) 1997-03-13

Family

ID=7771522

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1996/003875 WO1997009284A1 (en) 1995-09-07 1996-09-04 Method for producing coloured concrete bodies

Country Status (19)

Country Link
US (2) US6090329A (en)
EP (1) EP0848691B1 (en)
JP (1) JP3263398B2 (en)
CN (1) CN1092159C (en)
AT (1) ATE188197T1 (en)
AU (1) AU695856B2 (en)
BR (1) BR9610124A (en)
CA (1) CA2231264A1 (en)
DE (2) DE19533081C2 (en)
DK (1) DK0848691T3 (en)
ES (1) ES2142609T3 (en)
GR (1) GR3032756T3 (en)
HU (1) HUP9901178A2 (en)
MY (1) MY118355A (en)
NO (1) NO980977L (en)
NZ (1) NZ318392A (en)
PL (1) PL187414B1 (en)
PT (1) PT848691E (en)
WO (1) WO1997009284A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20010057252A (en) * 1999-12-21 2001-07-04 최철 A coloring composition having a good compatibility with cement
WO2001074735A1 (en) * 1999-03-15 2001-10-11 Axel J. Societe En Commandite Process for producing pigment granules and for dyeing concrete
US20150266776A1 (en) * 2008-05-02 2015-09-24 L. M. Scofield Company High sri systems for cementitious applications

Families Citing this family (11)

* Cited by examiner, † Cited by third party
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DE19533081C2 (en) * 1995-09-07 1998-11-26 Braas Gmbh Process for the production of colored concrete bodies
CA2393425C (en) * 1999-12-03 2011-02-08 Sun Chemical Corporation Organic pigment dispersion for coloring building materials
CA2389885A1 (en) * 2002-06-19 2003-12-19 Smart Landscape Colors Inc. Process of colouring concrete with syringe-type metering system for liquid colours
US20040121082A1 (en) * 2002-10-22 2004-06-24 Jack Dunnous Method and apparatus for producing multi-color concrete
US7241500B2 (en) 2003-10-06 2007-07-10 Certainteed Corporation Colored roofing granules with increased solar heat reflectance, solar heat-reflective shingles, and process for producing same
DE102010003999A1 (en) 2009-05-12 2011-01-05 Harold Scholz & Co. Gmbh New pigment systems for coloring cementitious systems, in particular concrete
CA2808378A1 (en) 2009-08-20 2011-02-24 Certain Teed Corporation Roofing granules, roofing products including such granules, and process for preparing same
US8637116B2 (en) 2009-08-20 2014-01-28 Certainteed Corporation Process for preparing roofing granules comprising organic colorant, with improved luster, and roofing products including such granules
WO2013138298A1 (en) * 2012-03-16 2013-09-19 Intecrete, Llc Multi-layered cement compositions containing photocatalyst particles and method for creating multi-layered cement compositions containing photocatalyst particles
CN107903787A (en) * 2017-12-15 2018-04-13 苏州金润新材料科技有限公司 A kind of concrete penetrating colorants and its application
CN111039582B (en) * 2019-12-19 2021-10-22 深圳市点绿科技有限公司 Preparation method of yellow rust purple quartz sand

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JPH0657148A (en) * 1992-08-11 1994-03-01 Sumika Color Kk Surface course material for colored pavement and its production
WO1994018137A1 (en) * 1993-02-10 1994-08-18 Harcros Pigments, Inc. Surface modified particles and method of making the same

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FR2223329A1 (en) * 1973-03-28 1974-10-25 Hoechst Ag
NL8105814A (en) * 1981-12-23 1983-07-18 Anjap Nv Granulate particles with coloured layer of synthetic resin - compatible with heat hardening resin. esp. for flooring
US4548968A (en) * 1983-04-06 1985-10-22 Ciba Geigy Corporation Manufacture of resin extended pigments
JPH0657148A (en) * 1992-08-11 1994-03-01 Sumika Color Kk Surface course material for colored pavement and its production
WO1994018137A1 (en) * 1993-02-10 1994-08-18 Harcros Pigments, Inc. Surface modified particles and method of making the same

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001074735A1 (en) * 1999-03-15 2001-10-11 Axel J. Societe En Commandite Process for producing pigment granules and for dyeing concrete
KR20010057252A (en) * 1999-12-21 2001-07-04 최철 A coloring composition having a good compatibility with cement
US20150266776A1 (en) * 2008-05-02 2015-09-24 L. M. Scofield Company High sri systems for cementitious applications
US9732000B2 (en) * 2008-05-02 2017-08-15 L. M. Scofield Company High SRI systems for cementitious applications

Also Published As

Publication number Publication date
EP0848691A1 (en) 1998-06-24
DE69605930T2 (en) 2001-04-26
JP3263398B2 (en) 2002-03-04
HUP9901178A2 (en) 1999-08-30
NO980977D0 (en) 1998-03-06
PL187414B1 (en) 2004-07-30
PL325238A1 (en) 1998-07-06
CN1195335A (en) 1998-10-07
DE69605930D1 (en) 2000-02-03
NO980977L (en) 1998-03-06
GR3032756T3 (en) 2000-06-30
US6090329A (en) 2000-07-18
US6268410B1 (en) 2001-07-31
DE19533081C2 (en) 1998-11-26
JPH11510139A (en) 1999-09-07
MY118355A (en) 2004-10-30
PT848691E (en) 2000-06-30
ES2142609T3 (en) 2000-04-16
DK0848691T3 (en) 2000-05-15
CN1092159C (en) 2002-10-09
CA2231264A1 (en) 1997-03-13
DE19533081A1 (en) 1997-03-13
EP0848691B1 (en) 1999-12-29
NZ318392A (en) 1998-09-24
BR9610124A (en) 1999-05-04
AU695856B2 (en) 1998-08-27
ATE188197T1 (en) 2000-01-15
AU6986896A (en) 1997-03-27

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