EP0724612A1 - Agent de revetement et son utilisation pour revetir des conteneurs - Google Patents

Agent de revetement et son utilisation pour revetir des conteneurs

Info

Publication number
EP0724612A1
EP0724612A1 EP94930214A EP94930214A EP0724612A1 EP 0724612 A1 EP0724612 A1 EP 0724612A1 EP 94930214 A EP94930214 A EP 94930214A EP 94930214 A EP94930214 A EP 94930214A EP 0724612 A1 EP0724612 A1 EP 0724612A1
Authority
EP
European Patent Office
Prior art keywords
coating
less
coating agent
proportion
iron mica
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Withdrawn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
EP94930214A
Other languages
German (de)
English (en)
Inventor
Hans-Joachim Noack
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.)
CONTAINER COATING INDUSTRY GmbH
Original Assignee
CONTAINER COATING INDUSTRY 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
Application filed by CONTAINER COATING INDUSTRY GmbH filed Critical CONTAINER COATING INDUSTRY GmbH
Publication of EP0724612A1 publication Critical patent/EP0724612A1/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Withdrawn legal-status Critical Current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
    • 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
    • C09D5/08—Anti-corrosive paints
    • C09D5/082—Anti-corrosive paints characterised by the anti-corrosive pigment
    • C09D5/084—Inorganic compounds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/22—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to internal surfaces, e.g. of tubes
    • B05D7/227—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to internal surfaces, e.g. of tubes of containers, cans or the like

Definitions

  • the invention relates to a coating composition with a base component and a hardener.
  • Coating agents also and especially those used for containers, in particular overseas containers, contain to a considerable extent organic solvents, which are the
  • organic solvents such as xylene, toluene etc. could be reduced.
  • coating agents serve primarily as corrosion protection and, above all, heavy metal-containing components, for example lead, zinc, cadmium, are considered to have a corrosion protection effect.
  • a lacquer layer with zinc dust paint is generally first applied using an epoxy resin coating, followed by a solvent-based PVC lacquer. Before the zinc dust paint is applied, the surface is sandblasted.
  • the second layer of lacquer is needed simply because food may or may have to be transported in the containers and these may not come into contact with the zinc dust paint.
  • the object of the invention is to propose a coating agent for containers which is more environmentally compatible.
  • the proportion of synthetic iron mica in the coating composition is more than 10% and less than 25%.
  • the proportion of synthetic iron mica in the coating composition is more than 15% and less than 20%.
  • synthetic iron mica In contrast to natural iron mica, synthetic iron mica contains no salts and other impurities.
  • the chemical composition differs fundamentally. Uncontrollable reactions can no longer occur in water-dilutable systems, so that the use of solvents can be drastically reduced.
  • the coating agent can be diluted with water. It is particularly advantageous if the proportion of organic solvents is below 5%. This low proportion results in a special environmental compatibility; on the other hand, in contrast to the prior art, a higher proportion is no longer necessary.
  • talc lamellar as a pigment is also particularly advantageous. It is structurally similar to synthetic iron mica and therefore supports it
  • Titanium dioxide can be used as the color pigment. This results in a white to light gray color, in addition titanium dioxide has additional corrosion protection
  • titanium dioxide portion could also be replaced by iron mica, which would result in a gray / reddish color.
  • a suitable hardener of this type is described, for example, in 35 EP 0 175 588 B1. It is commercially available as a CMDJ60-8290 Cu ⁇ ng Agent.
  • An epoxy resin dispersion for example as described in DE 28 41 751 A1, is particularly suitable as a binder. It is commercially available under the name EPi-REZ 5522-WY-55 Waterborne Resin.
  • composition has proven to be a particularly suitable formulation for the coating composition:
  • Binder multifunctional epoxy resin dispersion 12 - 18% on n-adduct hardener, acidic 2 - 4% synthetic iron mica 15 - 20%
  • Talc lamelar 6 10% modified zinc aluminum phosphate 6 - 10% organic solvent 3 - 5% demineralized water 10 - 15%
  • This recipe is physiologically safe and also suitable for compliance with food law regulations, as has already been confirmed by testing.
  • the coating can thus also be brought into contact with food.
  • a coating agent is created which is equally good
  • Has corrosion protection properties such as zinc dust paints but at the same time is free of heavy metals (no lead, no cadmium, no other environmentally harmful heavy metals), in contrast to zinc dust paints it can also be diluted with water and contains a reduced proportion of organic solvents, less than 5%, preferably even less than 4% with 40% solvent content in conventional systems.
  • the defined surface and platelet shape of the synthetic iron mica leads to the superior coating agent.
  • a two-component coating system based on a multifunctional epoxy resin dispersion was built up as a binder.
  • the reaction takes place with an amine adduct hardener, the base component has synthetically produced iron mica platelets with a lamellar formation of the particles.
  • the synthetic iron mica has a defined surface size from l ⁇ to 15 ⁇ and a platelet shape.
  • This material is far superior to natural ice mica due to the absence of any impurities, since impurities such as soluble salts can be very harmful for the subsequent corrosion protection.
  • the lamellar design of the material creates a barrier effect in the coating against the penetration of moisture and / or water.
  • a modified zinc phosphate based on a basic zinc-aluminum phosphate is added to the coating agent.
  • the hardener component amine adduct contains a special acid component, especially acetic acid, which optimizes the adhesion (adhesion) by reaction on the substrate - steel substrates.
  • the use of the coating agent is particularly advantageous for the interior painting of containers, especially for those that are intended for the transport of goods that require the paint to be physiologically harmless. But also for exterior painting there are significant advantages due to the excellent corrosion protection properties. It can be used here especially for overseas containers, which must also be corrosion-resistant against salt water.
  • a container that experiences such an internal coating with such a coating agent only needs a single-layer lacquer without an additional coating.
  • the previous sandblasting of the steel substrate can be dispensed with.
  • a container that is coated internally with such a coating agent only needs a one-coat topcoat for the outside area, which is also carried out on the basis of a water-thinnable synthetic resin lacquer.
  • the coating agent according to the invention is used in one layer in the interior.
  • the overall system can be described as significantly more environmentally friendly than conventional, conventional solvent-containing coating systems, since the proportion of solvents is currently reduced from approximately 40% to 5%.

Landscapes

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

Abstract

Un agent de revêtement comprend un composant de base et un durcisseur. Des paillettes de fer micacé synthétique sont mélangées au composant de base.
EP94930214A 1993-10-22 1994-10-24 Agent de revetement et son utilisation pour revetir des conteneurs Withdrawn EP0724612A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19934336012 DE4336012A1 (de) 1993-10-22 1993-10-22 Beschichtungsmittel und seine Verwendung für die Innenbeschichtung von Containern
DE4336012 1993-10-22
PCT/EP1994/003490 WO1995011281A1 (fr) 1993-10-22 1994-10-24 Agent de revetement et son utilisation pour revetir des conteneurs

Publications (1)

Publication Number Publication Date
EP0724612A1 true EP0724612A1 (fr) 1996-08-07

Family

ID=6500728

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94930214A Withdrawn EP0724612A1 (fr) 1993-10-22 1994-10-24 Agent de revetement et son utilisation pour revetir des conteneurs

Country Status (5)

Country Link
EP (1) EP0724612A1 (fr)
AU (1) AU7939694A (fr)
DE (1) DE4336012A1 (fr)
PL (1) PL313980A1 (fr)
WO (1) WO1995011281A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19516580A1 (de) * 1995-05-05 1996-11-07 Merck Patent Gmbh Pigmentzubereitung
AT9056U1 (de) * 2004-06-24 2007-04-15 Kaerntner Montanindustrie Ges Lamellares eisen-iii-oxid
DE102008064182A1 (de) 2008-12-22 2010-07-01 Dresdner Lackfabrik Novatic Gmbh & Co. Kg Korrosionsschutzsystem zur Beschichtung von Metalloberflächen und Verfahren zu seiner Herstellung
DE202008016853U1 (de) 2008-12-22 2009-03-05 Dresdner Lackfabrik Novatic Gmbh & Co. Kg Korrosionsschutzsystem zur Beschichtung von Metalloberflächen von Containern und Stahlkonstruktionen

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1167900A (en) * 1966-10-19 1969-10-22 British Paints Ltd Coating Composition.
IT1120410B (it) * 1978-04-21 1986-03-26 Mineral Process Licensing Corp Procedimento per la produzione di ossido di ferro e prodotto ottenuto
US4436773A (en) * 1982-02-05 1984-03-13 Dai Nippon Toryo Co., Ltd. Anticorrosive coating process
GR79807B (fr) * 1983-02-24 1984-10-31 Cookson Laminox Ltd
JPS62106970A (ja) * 1985-11-01 1987-05-18 Aisin Chem Co Ltd 水性塗料組成物
JPH0670196B2 (ja) * 1989-02-13 1994-09-07 戸田工業株式会社 黄金色を呈する塗料
JP2727230B2 (ja) * 1989-06-05 1998-03-11 戸田工業株式会社 塗料組成物
IE63441B1 (en) * 1990-02-16 1995-04-19 Thomas Noel Coughlan Improvements in and relating to manufacture of simulated lead lights

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9511281A1 *

Also Published As

Publication number Publication date
DE4336012A1 (de) 1995-04-27
PL313980A1 (en) 1996-08-05
WO1995011281A1 (fr) 1995-04-27
AU7939694A (en) 1995-05-08

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