EP0113863B1 - Cutting oil for non-ferro metal working without removal of chips - Google Patents

Cutting oil for non-ferro metal working without removal of chips Download PDF

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Publication number
EP0113863B1
EP0113863B1 EP83112390A EP83112390A EP0113863B1 EP 0113863 B1 EP0113863 B1 EP 0113863B1 EP 83112390 A EP83112390 A EP 83112390A EP 83112390 A EP83112390 A EP 83112390A EP 0113863 B1 EP0113863 B1 EP 0113863B1
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EP
European Patent Office
Prior art keywords
cutting oil
cutting
milling
oil according
engraving
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.)
Expired
Application number
EP83112390A
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German (de)
French (fr)
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EP0113863A3 (en
EP0113863A2 (en
Inventor
Manfred Dr. Urban
Dieter Dr. Schmitt
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Merck Patent GmbH
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Merck Patent GmbH
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Publication of EP0113863A3 publication Critical patent/EP0113863A3/en
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    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M169/00—Lubricating compositions characterised by containing as components a mixture of at least two types of ingredient selected from base-materials, thickeners or additives, covered by the preceding groups, each of these compounds being essential
    • C10M169/04—Mixtures of base-materials and additives
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M101/00—Lubricating compositions characterised by the base-material being a mineral or fatty oil
    • C10M101/04—Fatty oil fractions
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M105/00—Lubricating compositions characterised by the base-material being a non-macromolecular organic compound
    • C10M105/08—Lubricating compositions characterised by the base-material being a non-macromolecular organic compound containing oxygen
    • C10M105/32—Esters
    • C10M105/34—Esters of monocarboxylic acids
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M105/00—Lubricating compositions characterised by the base-material being a non-macromolecular organic compound
    • C10M105/08—Lubricating compositions characterised by the base-material being a non-macromolecular organic compound containing oxygen
    • C10M105/32—Esters
    • C10M105/38—Esters of polyhydroxy compounds
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M107/00—Lubricating compositions characterised by the base-material being a macromolecular compound
    • C10M107/20—Lubricating compositions characterised by the base-material being a macromolecular compound containing oxygen
    • C10M107/30—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M107/32—Condensation polymers of aldehydes or ketones; Polyesters; Polyethers
    • C10M107/34—Polyoxyalkylenes
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M135/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing sulfur, selenium or tellurium
    • C10M135/08—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing sulfur, selenium or tellurium containing a sulfur-to-oxygen bond
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M135/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing sulfur, selenium or tellurium
    • C10M135/08—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing sulfur, selenium or tellurium containing a sulfur-to-oxygen bond
    • C10M135/10—Sulfonic acids or derivatives thereof
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/28—Esters
    • C10M2207/281—Esters of (cyclo)aliphatic monocarboxylic acids
    • C10M2207/2815—Esters of (cyclo)aliphatic monocarboxylic acids used as base material
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/28—Esters
    • C10M2207/283—Esters of polyhydroxy compounds
    • C10M2207/2835—Esters of polyhydroxy compounds used as base material
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/28—Esters
    • C10M2207/284—Esters of aromatic monocarboxylic acids
    • C10M2207/2845—Esters of aromatic monocarboxylic acids used as base material
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/40—Fatty vegetable or animal oils
    • C10M2207/401—Fatty vegetable or animal oils used as base material
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/40—Fatty vegetable or animal oils
    • C10M2207/404—Fatty vegetable or animal oils obtained from genetically modified species
    • C10M2207/4045—Fatty vegetable or animal oils obtained from genetically modified species used as base material
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
    • C10M2209/10—Macromolecular compoundss obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M2209/103—Polyethers, i.e. containing di- or higher polyoxyalkylene groups
    • C10M2209/1033—Polyethers, i.e. containing di- or higher polyoxyalkylene groups used as base material
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
    • C10M2209/10—Macromolecular compoundss obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M2209/103—Polyethers, i.e. containing di- or higher polyoxyalkylene groups
    • C10M2209/104—Polyethers, i.e. containing di- or higher polyoxyalkylene groups of alkylene oxides containing two carbon atoms only
    • C10M2209/1045—Polyethers, i.e. containing di- or higher polyoxyalkylene groups of alkylene oxides containing two carbon atoms only used as base material
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
    • C10M2209/10—Macromolecular compoundss obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M2209/103—Polyethers, i.e. containing di- or higher polyoxyalkylene groups
    • C10M2209/105—Polyethers, i.e. containing di- or higher polyoxyalkylene groups of alkylene oxides containing three carbon atoms only
    • C10M2209/1055—Polyethers, i.e. containing di- or higher polyoxyalkylene groups of alkylene oxides containing three carbon atoms only used as base material
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
    • C10M2209/10—Macromolecular compoundss obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M2209/103—Polyethers, i.e. containing di- or higher polyoxyalkylene groups
    • C10M2209/106—Polyethers, i.e. containing di- or higher polyoxyalkylene groups of alkylene oxides containing four carbon atoms only
    • C10M2209/1065—Polyethers, i.e. containing di- or higher polyoxyalkylene groups of alkylene oxides containing four carbon atoms only used as base material
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
    • C10M2209/10—Macromolecular compoundss obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M2209/103—Polyethers, i.e. containing di- or higher polyoxyalkylene groups
    • C10M2209/107—Polyethers, i.e. containing di- or higher polyoxyalkylene groups of two or more specified different alkylene oxides covered by groups C10M2209/104 - C10M2209/106
    • C10M2209/1075—Polyethers, i.e. containing di- or higher polyoxyalkylene groups of two or more specified different alkylene oxides covered by groups C10M2209/104 - C10M2209/106 used as base material
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
    • C10M2209/10—Macromolecular compoundss obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M2209/103—Polyethers, i.e. containing di- or higher polyoxyalkylene groups
    • C10M2209/108—Polyethers, i.e. containing di- or higher polyoxyalkylene groups etherified
    • C10M2209/1085—Polyethers, i.e. containing di- or higher polyoxyalkylene groups etherified used as base material
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
    • C10M2209/10—Macromolecular compoundss obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M2209/103—Polyethers, i.e. containing di- or higher polyoxyalkylene groups
    • C10M2209/109—Polyethers, i.e. containing di- or higher polyoxyalkylene groups esterified
    • C10M2209/1095—Polyethers, i.e. containing di- or higher polyoxyalkylene groups esterified used as base material
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
    • C10M2219/04—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions containing sulfur-to-oxygen bonds, i.e. sulfones, sulfoxides
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
    • C10M2219/04—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions containing sulfur-to-oxygen bonds, i.e. sulfones, sulfoxides
    • C10M2219/042—Sulfate esters
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
    • C10M2219/04—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions containing sulfur-to-oxygen bonds, i.e. sulfones, sulfoxides
    • C10M2219/044—Sulfonic acids, Derivatives thereof, e.g. neutral salts

Definitions

  • the invention relates to a new cutting oil for the machining of non-ferrous metals.
  • it relates to a cutting oil for milling and / or engraving copper cylinders used in gravure printing.
  • the artwork is engraved in the form of corresponding depressions in the outer surface of copper printing cylinders. These depressions receive the printing ink during the printing process, which is then transferred from the rotating cylinder to the material to be printed. After printing, this outer engraved copper layer is removed from the used cylinder by a milling process. Then a new artwork is engraved on the fresh surface and coppered or chrome-plated to achieve a higher mechanical strength (necessary for long print runs).
  • a special device is predominantly used for the above-mentioned milling process, which mills off the outer, no longer required metal layer from the rotating copper cylinder with high precision using a fast-running milling disk with cutting diamonds.
  • the cutting oil used to date according to the prior art normally consists of a natural fat, i.e. a glycerol ester of natural, partially unsaturated fatty acids (content in the cutting oil approx. 50 percent by weight), which is dissolved in chlorinated hydrocarbons (mixture of methylene chloride and trichloroethane).
  • a natural fat i.e. a glycerol ester of natural, partially unsaturated fatty acids (content in the cutting oil approx. 50 percent by weight)
  • chlorinated hydrocarbons mixture of methylene chloride and trichloroethane
  • the object of the invention is to provide a cutting oil for the machining of non-ferrous metals, in particular for milling and engraving copper cylinders used in gravure printing, which meets the requirements described and does not have the disadvantages mentioned above.
  • the invention thus relates to a cutting oil based on fatty acid esters of monohydric or polyhydric alcohols for the machining of non-ferrous metals, in particular for milling and / or engraving copper cylinders used in gravure printing, which is characterized in that it contains glycols, Contains oligoglycols, polyglycols or their mono- or di-ethers or esters and a surfactant, preferably anion-active.
  • the invention further relates to a method for machining non-ferrous metals, in particular a method for milling and / or engraving copper cylinders used in gravure printing, using a cutting oil, which is characterized in that the cutting oil according to the invention is used here.
  • the invention furthermore relates to the use of the cutting oil according to the invention in the machining of non-ferrous metals, in particular when milling and / or engraving copper cylinders used in gravure printing.
  • the cutting oil contains fatty acid esters of monohydric or polyhydric alcohols, preferably glycerol, in a proportion of 20-80% by weight, preferably 40 to 60% by weight. Saturated, optionally hardened fatty acid esters are preferred as high as possible, since this makes the bearings - and oxidation stability of the cutting oil is increased and the tendency to resinify is reduced, a disadvantage which cutting oils according to the prior art have based on natural fats with different, and possibly also higher, unsaturated fatty acid content.
  • Suitable solvents according to the invention are virtually any glycols, oligo- and polyglycols and their mono- or diether or ester, but also mixed ether-ester derivatives which have molecular weights between about 100 and 600 and which meet the above criteria.
  • Common solvents of this type are the lower homologues of ethylene glycol and propylene glycol and derivatives of these compounds in which one or both hydroxyl groups are etherified and / or esterified, alkyl having 1 to 4 carbon atoms as ether groups.
  • Phenyl or benzyl. possible acid residues are alkane-carboxylic acids with up to 4 carbon atoms or benzoyl.
  • Diethylene glycol dibutyl ether, dipropylene glycol monomethyl ether, tripropylene glycol monomethyl ether and tetraethylene glycol are preferably used as solvents according to the invention.
  • the cutting oil contains surface-active substances in a proportion of 0.01-5% by weight. preferably 0.1-1% by weight.
  • suitable substances are largely uncritical for the effect of an improved detachability of the cutting oil from the processed metal.
  • all common cation- or anion-active, non-ionic or amphoteric surfactants are suitable.
  • Anionic surfactants are advantageous for detaching the cutting oil film with the help of an alkaline degreasing bath, and therefore preferred because their surface-active effect is best shown in an alkaline environment.
  • These can be soaps, alkane, olefin and ester sulfonates, in particular alkylbenzenesulfonates and alkyl, ether and fatty alcohol or fatty ether sulfates.
  • the person skilled in the art can select the suitable substances from the large number of substances available by simply trying them out.
  • sodium dodecylbenzenesulfonate sodium cetylethersulfat, sodium lauryl sulfate or corresponding commercially available preparations, such as a sodium salt of a fatty acid condensation product (R Lutensit A-FK BASF AG).
  • the cutting oil according to the invention is characterized by very good fulfillment of requirements 1-3. In particular, however, it can be removed excellently and completely, as also demonstrated in one of the examples below, by an alkaline degreasing bath from a metal surface treated with the cutting oil. Accordingly, especially in the use according to the invention when milling and engraving copper cylinders used in gravure printing, it can also be completely removed from the cylinder edges by the degreasing bath. There is also no regreasing from the bath to the cylinder, which leads to longer service life of the baths.
  • the cutting oil according to the invention does not contain any substances that are hazardous to health and, in contrast to the cutting oil according to the prior art, has practically no unpleasant odor.
  • Examples 1-4 are intended to illustrate cutting oils according to the invention.
  • Example 5 shows in a comparative degreasing test the particular advantages of the cutting oil according to the invention over a cutting oil according to the prior art. It can be seen that the minimum duration of treatment with a degreasing bath is reduced to less than half by the content of the solvent according to the invention, and in the presence of a surfactant according to the invention to approximately 1/10 compared to that required for a cutting oil according to the prior art.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Emergency Medicine (AREA)
  • Lubricants (AREA)
  • Manufacture Or Reproduction Of Printing Formes (AREA)

Description

Die Erfindung betrifft ein neues Schneidöl für die spangebende Bearbeitung von Buntmetallen. Insbesondere betrifft sie ein Schneidöl für das Fräsen und/oder Gravieren von im Tiefdruck verwendeten Kupfer zylindern.The invention relates to a new cutting oil for the machining of non-ferrous metals. In particular, it relates to a cutting oil for milling and / or engraving copper cylinders used in gravure printing.

Für die spangebende Bearbeitung von Metallen, besonders Buntmetallen, wie Drehen, Fräsen, Bohren, Sägen, Schneiden und Schleifen, besteht ein hoher Bedarf an leistungsfähigen Schneidölen. Diese dienen als Kühlund Schmiermittel und haben die Aufgabe, eine einwandfreie Bearbeitung des Werkstücks zu gewährleisten. Insbesondere sollen sie eine gute Gleitung des Schneidwerkzeuges auf dem Werkstück und eine Ableitung der bei der spangebenden Bearbeitung lokal entstehenden Wärme ermöglichen sowie eine Korrosion der bearbeiteten Metalloberfläche und einen Verschleiß des Werkzeuges verhindern (siehe Ullmann's Enzyklopädie der technischen Chemie, 4. Auflage, Band 20, Seite 617-622.1981).For the machining of metals, especially non-ferrous metals such as turning, milling, drilling, sawing, cutting and grinding, there is a high demand for high-performance cutting oils. These serve as coolants and lubricants and have the task of guaranteeing perfect machining of the workpiece. In particular, they are intended to allow the cutting tool to slide smoothly on the workpiece and to dissipate the heat generated locally during machining, and to prevent corrosion of the machined metal surface and wear of the tool (see Ullmann's Encyclopedia of Technical Chemistry, 4th edition, volume 20, Page 617-622.1981).

Im Tiefdruck wird in die äußere Oberfläche kupferner Druckzylinder die Druckvorlage in Form entsprechender Vertiefungen eingraviert. Diese Vertiefungen nehmen während des Druckvorganges die Druckfarbe auf, die dann vom rotierenden Zylinder auf das zu bedruckende Material übertragen wird. Nach Beendigung des Druckes wird diese äußere gravierte Kupferschicht durch einen Fräsvorgang vom gebrauchten Zylinder entfernt. Danach wird dann eine neue Druckvorlage in die frische Oberfläche graviert und diese zur Erreichung einer höheren mechanischen Festigkeit (notwendig bei hohen Druckauflagen) verkupfert bzw. verchromt.In gravure printing, the artwork is engraved in the form of corresponding depressions in the outer surface of copper printing cylinders. These depressions receive the printing ink during the printing process, which is then transferred from the rotating cylinder to the material to be printed. After printing, this outer engraved copper layer is removed from the used cylinder by a milling process. Then a new artwork is engraved on the fresh surface and coppered or chrome-plated to achieve a higher mechanical strength (necessary for long print runs).

Für den genannten Fräsvorgang wird überwiegend ein Spezialgerät eingesetzt, das vom rotierenden Kupferzylinder die äußere, nicht mehr benötigte Metallschicht durch eine schnell laufende, mit Schneiddiamanten besetzte Frässcheibe in hoher Präzision abfräst.A special device is predominantly used for the above-mentioned milling process, which mills off the outer, no longer required metal layer from the rotating copper cylinder with high precision using a fast-running milling disk with cutting diamonds.

Für diesen Prozess wird ein Schneidöl benötigt, das die folgenden Anforderungen erfüllen sollte :

  • 1. Ermöglichung einer einwandfreien Bearbeitung des Druckzylinders, das heißt
    • a) Ausbildung eines gut haftenden, auch während des Fräsvorganges und den dabei erzeugten höheren Temperaturen nichtreißenden Ölfilmes,
    • b) Erzeugung einer absolut glatten, neuen Oberfläche durch eine entsprechend gute Schmierung des Schneidwerkzeuges,
    • c) gute Wärmeableitung von bearbeiteter Metalloberfläche und Schneidwerkzeug,
    • d) Verhinderung des Zusammenbackens der abgefrästen Metallteilchen, insbesondere am Schneidwerkzeug,
    • e) Verhinderung der Korrosion der frischen Metalloberfläche sowie eines schnellen Verschlei- ßens des Schneidwerkzeuges.
  • 2. Bei der nachfolgenden Gravur des Kupferzylinders muß der Gleitfuß der Graviereinheit auf dem Schneidölfilm einwandfrei gleiten.
  • 3. Nach dem Gravieren muß sich der Schneidölfilm in einem alkalischen Entfettungsbad vollständig entfernen lassen. Nur so ist bei der anschließenden Verkupferung bzw. Verchromung der gravierten Druckzylinderoberfläche eine ausreichende Haftung der aufgebrachten Metallschicht und damit eine hohe Auflagenzahl bei gleichbleibender Druckqualität gewährleistet.
A cutting oil is required for this process, which should meet the following requirements:
  • 1. Enabling proper processing of the printing cylinder, that is
    • a) formation of a well-adhering oil film which does not tear even during the milling process and the higher temperatures generated thereby,
    • b) generation of an absolutely smooth, new surface by means of a correspondingly good lubrication of the cutting tool,
    • c) good heat dissipation from the machined metal surface and cutting tool,
    • d) preventing the milled metal particles from caking, especially on the cutting tool,
    • e) Prevention of corrosion of the fresh metal surface and rapid wear of the cutting tool.
  • 2. During the subsequent engraving of the copper cylinder, the sliding foot of the engraving unit must slide smoothly on the cutting oil film.
  • 3. After engraving, the cutting oil film must be completely removed in an alkaline degreasing bath. This is the only way to ensure sufficient adhesion of the applied metal layer during the subsequent copper-plating or chrome-plating of the engraved impression cylinder surface, and thus a high number of runs with constant print quality.

Das nach dem Stand der Technik bisher verwendete Schneidöl besteht normalerweise aus einem natürlichen Fett, also einem Glycerinester natürlicher, partiell ungesättigter Fettsäuren (Gehalt im Schneidöl ca. 50 Gewichtsprozent), das in chlorierten Kohlenwasserstoffen gelöst ist (Gemisch aus Methylenchlorid und Trichlorethan).The cutting oil used to date according to the prior art normally consists of a natural fat, i.e. a glycerol ester of natural, partially unsaturated fatty acids (content in the cutting oil approx. 50 percent by weight), which is dissolved in chlorinated hydrocarbons (mixture of methylene chloride and trichloroethane).

Nachteile dieses Produktes sind :

  • A. Ein damit behandelter Druckzylinder läßt sich nur sehr schwer vollständig entfetten. insbesondere an den Zylinderrändern erfolgt die Entfernung des Öls durch das Entfettungsbad nur unvollständig, was zu einer schlechten Haftung der frisch abgeschiedenen Kupfer- bzw. Chromschichten führt. Daraus resultieren Zylinder- und Maschinenschäden, somit letztlich niedrigere Druckauflagen und schlechtere Druckqualität.
  • B. Durch den Gehalt an chlorierten Kohlenwasserstoffen mit hohem Dampfdruck gehört das Schneidöl gemäß dem Stand der Technik zu den gesundheitsschädlichen Stoffen. Das Aufbringen des Schneidöls auf den Zylinder als dünnen Film fördert noch die Verdunstung, so daß dort Beschäftigte einem hohen, oft nicht mehr tolerierbaren Anteil an chlorierten Kohlenwasserstoffen in der Atemluft ausgesetzt sind.
  • C. Die schnellaufende Frässcheibe (bis ca. 10000 Umdrehungen pro Minute) bewirkt eine Vernebelung des Schneidöls, was zu einer unerwünschten Verunreinigung des Arbeitsplatzes und bei den dort Beschäftigten zu einer Geruchsbelästigung sowie einer weiteren Beeinträchtigung und Gefährdung durch die Spritznebel und das niedergeschlagene Öl führt.
Disadvantages of this product are:
  • A. A pressure cylinder treated with this is very difficult to degrease completely. At the cylinder edges in particular, the oil is only removed incompletely by the degreasing bath, which leads to poor adhesion of the freshly deposited copper or chrome layers. This results in cylinder and machine damage, ultimately resulting in shorter print runs and poorer print quality.
  • B. Due to the content of chlorinated hydrocarbons with high vapor pressure, the cutting oil according to the prior art is one of the substances harmful to health. The application of the cutting oil to the cylinder as a thin film further promotes evaporation, so that workers there are exposed to a high, often intolerable, proportion of chlorinated hydrocarbons in the breathing air.
  • C. The high-speed milling disc (up to approx. 10000 revolutions per minute) causes the cutting oil to be atomized, which leads to undesired contamination of the work place and to odor nuisance among the employees, as well as further impairment and danger from the spray mist and the precipitated oil.

Aufgabe der Erfindung ist es, ein Schneidöl für die spangebende Bearbeitung von Buntmetallen, insbesondere für das Fräsen und Gravieren von im Tiefdruck verwendeten Kupferzylindern, bereitzustellen, das die geschilderten Anforderungen erfüllt und nicht die oben genannten Nachteile aufweist.The object of the invention is to provide a cutting oil for the machining of non-ferrous metals, in particular for milling and engraving copper cylinders used in gravure printing, which meets the requirements described and does not have the disadvantages mentioned above.

Überraschenderweise wurde nun gefunden, daß dies erreicht wird-durch ein Schneidöi, das als Lösungsmittel Glycole, Oligoglycole, Polyglycole bzw. deren Mono- oder Diether bzw. -ester sowie ein Tensid enthält.Surprisingly, it has now been found that this is achieved by a cutting oil which uses glycols, oligoglycols, polyglycols or their mono- or diethers or esters as solvents and contains a surfactant.

Gegenstand der Erfindung ist somit ein Schneidöl auf der Basis von Fettsäureestern von ein-oder mehrwertigen Alkoholen für die spangebende Bearbeitung von Buntmetallen, insbesondere für das Fräsen und/oder Gravieren von im Tiefdruck verwendeten Kupferzylindern, das dadurch gekennzeichnet ist, daß es als Lösungsmittel Glycole, Oligoglycole, Polyglycole bzw. deren Mono- oder Di-ether bzw. -ester sowie ein Tensid, vorzugsweise anionenaktive, enthält.The invention thus relates to a cutting oil based on fatty acid esters of monohydric or polyhydric alcohols for the machining of non-ferrous metals, in particular for milling and / or engraving copper cylinders used in gravure printing, which is characterized in that it contains glycols, Contains oligoglycols, polyglycols or their mono- or di-ethers or esters and a surfactant, preferably anion-active.

Gegenstand der Erfindung ist weiterhin ein Verfahren zur spangebenden Bearbeitung von Buntmetallen, insbesondere ein Verfahren zum Fräsen und/oder Gravieren von im Tiefdruck verwendeten Kupfer zylindern, unter Verwendung eines Schneidöls, das dadurch gekennzeichnet ist, daß hierbei das erfindungsgemäße Schneidöl verwendet wird.The invention further relates to a method for machining non-ferrous metals, in particular a method for milling and / or engraving copper cylinders used in gravure printing, using a cutting oil, which is characterized in that the cutting oil according to the invention is used here.

Gegenstand der Erfindung ist darüber hinaus die Verwendung des erfindungsgemäßen Schneidöls bei der spangebenden Bearbeitung von Buntmetallen, insbesondere beim Fräsen und/oder Gravieren von im Tiefdruck verwendeten Kupferzylindern.The invention furthermore relates to the use of the cutting oil according to the invention in the machining of non-ferrous metals, in particular when milling and / or engraving copper cylinders used in gravure printing.

Das Schneidöl enthält Fettsäureester von ein-oder mehrwertigen Alkoholen, vorzugsweise von Glycerin, in einem Anteil von 20-80 Gew: %, vorzugsweise 40 bis 60 Gew.-% Bevorzugt sind so hoch wie möglich gesättigte, gegebenenfalls gehärtete Fettsäureester, da dadurch die Lager- und Oxidationsstabilität des Schneidöls erhöht und die Neigung zum Verharzen vermindert wird, ein Nachteil, den Schneidöle nach dem Stand der Technik auf Basis natürlicher Fette mit unterschiedlichem, gegebenenfalls auch höherem Gehalt an ungesättigten Fettsäuren, aufweisen.The cutting oil contains fatty acid esters of monohydric or polyhydric alcohols, preferably glycerol, in a proportion of 20-80% by weight, preferably 40 to 60% by weight. Saturated, optionally hardened fatty acid esters are preferred as high as possible, since this makes the bearings - and oxidation stability of the cutting oil is increased and the tendency to resinify is reduced, a disadvantage which cutting oils according to the prior art have based on natural fats with different, and possibly also higher, unsaturated fatty acid content.

Als erfindungsgemäße Lösungsmittel enthält das Schneidöl Glycole, Oligoglycole, Polyglycole bzw. deren Mono- oder Diether bzw. -ester in einem Anteil von 20-80 Gew.-% vorzugsweise 40-60 Gew.-%. Die Auswahl dieser Lösungsmittel erfolgt nach folgenden Gesichtspunkten :

  • a) Die verwendeten Lösungsmittel sollten auch im Bereich niedrigerer Temperaturen ein ausreichendes Lösungsvermögen für das Fett und einen Erstarrungspunkt unter 0 °C besitzen, damit bei Transport oder längerer Lagerung bei niedrigen Temperaturen das Schneidöl sich nicht verfestigt.
  • b) Die Lösungsmittel sollten einen möglichst hohen Flammpunkt aufweisen, um die Gefahr einer Entzündung während des Fräsvorganges und den dabei auftretenden höheren Temperaturen auszuschließen. Flammpunkte über ca. 80 °C haben sich als unbedenklich erwiesen.
As the solvent according to the invention, the cutting oil contains glycols, oligoglycols, polyglycols or their mono- or diethers or esters in a proportion of 20-80% by weight, preferably 40-60% by weight. These solvents are selected based on the following criteria:
  • a) The solvents used should also have sufficient solubility for the grease and a solidification point below 0 ° C in the range of lower temperatures, so that the cutting oil does not solidify during transport or longer storage at low temperatures.
  • b) The solvents should have a flash point that is as high as possible to avoid the risk of ignition during the milling process and the higher temperatures that occur. Flash points above approx. 80 ° C have proven to be harmless.

Als erfindungsgemäße Lösungsmittel eignen sich praktisch alle beliebigen Glycole, Oligo- und Polyglycole sowie deren Mono- oder Diether bzw. -ester, aber auch gemischte Ether-Esterderivate, die Molekularmassen zwischen etwa 100 und 600 aufweisen und die die obengenannten Kriterien erfüllen. Gängige Lösungsmittel dieser Art sind die niederen Homologen von Ethylenglycol und Propylenglycol sowie Derivate dieser Verbindungen, in denen eine oder beide Hydroxylgruppen verethert und/oder verestert sind, wobei als Ethergruppen Alkyl mit 1 bis 4 C-Atomen. Phenyl oder Benzyl. als Säurereste Alkan-Carbonsäuren mit bis zu 4 C-Atomen oder Benzoyl in Frage kommen.Suitable solvents according to the invention are virtually any glycols, oligo- and polyglycols and their mono- or diether or ester, but also mixed ether-ester derivatives which have molecular weights between about 100 and 600 and which meet the above criteria. Common solvents of this type are the lower homologues of ethylene glycol and propylene glycol and derivatives of these compounds in which one or both hydroxyl groups are etherified and / or esterified, alkyl having 1 to 4 carbon atoms as ether groups. Phenyl or benzyl. possible acid residues are alkane-carboxylic acids with up to 4 carbon atoms or benzoyl.

Als erfindungsgemäße Lösungsmittel finden bevorzugt Verwendung Diethylenglycol-dibutylether, Dipropylenglycolmonomethylether, Tripropylenglycolmonomethylether, Tetraethylenglycol.Diethylene glycol dibutyl ether, dipropylene glycol monomethyl ether, tripropylene glycol monomethyl ether and tetraethylene glycol are preferably used as solvents according to the invention.

Als erfindungsgemäßen Tensidzusatz enthält das Schneidöl oberflächenaktive Substanzen in einem Anteil von 0,01-5 Gew.-%. vorzugsweise 0,1-1 Gew.-%.As a surfactant additive according to the invention, the cutting oil contains surface-active substances in a proportion of 0.01-5% by weight. preferably 0.1-1% by weight.

Die Auswahl geeigneter Substanzen ist für den zu erzielenden Effekt einer verbesserten Ablösbarkeit des Schneidöls vom bearbeiteten Metall weitgehend unkritisch. Prinzipiell sind alle gängigen kationen- bzw. anionenaktiven, nichtionogenen oder amphoteren Tenside geeignet. Vorteilhaft für die Ablösung des Schneidölfilms mit Hilfe eines alkalischen Entfettungsbades und deshalb bevorzugt sind anionenaktive Tenside, da deren oberflächenaktive Wirkung im alkalischen Milieu am besten zur Geltung kommt. Dies können sein Seifen, Alkan-, Olefin- und Estersulfonate, insbesondere Alkylbenzolsulfonate sowie Alkyl-, Ether-und Fettalkohol- bzw. Fettethersulfate. Der Fachmann kann aus der großen Zahl der zur Verfügung stehenden Substanzen die geeigneten durch einfaches Ausprobieren auswählen.The selection of suitable substances is largely uncritical for the effect of an improved detachability of the cutting oil from the processed metal. In principle, all common cation- or anion-active, non-ionic or amphoteric surfactants are suitable. Anionic surfactants are advantageous for detaching the cutting oil film with the help of an alkaline degreasing bath, and therefore preferred because their surface-active effect is best shown in an alkaline environment. These can be soaps, alkane, olefin and ester sulfonates, in particular alkylbenzenesulfonates and alkyl, ether and fatty alcohol or fatty ether sulfates. The person skilled in the art can select the suitable substances from the large number of substances available by simply trying them out.

So können beispielsweise als Tensid zum Schneidöl zugesetzt werden Natrium-dodecylbenzolsulfonat, Natrium-cetylethersulfat, Natrium-laurylsulfat oder entsprechende handelsübliche Präparate, wie zum Beispiel ein Natriumsalz eines Fettsäurekondensationsproduktes (LutensitR A-FK der BASF AG).Thus, for example be added as a surfactant for cutting oil, sodium dodecylbenzenesulfonate, sodium cetylethersulfat, sodium lauryl sulfate or corresponding commercially available preparations, such as a sodium salt of a fatty acid condensation product (R Lutensit A-FK BASF AG).

Das erfindungsgemäße Schneidöl zeichnet sich durch eine sehr gute Erfüllung der Anforderungen 1-3 aus. Insbesondere läßt es sich aber hervorragend und vollständig, wie auch in einem der nachfolgenden Beispiele belegt, durch ein alkalisches Entfettungsbad von einer mit dem Schneidöl behandelten Metalloberfläche entfernen. Dementsprechend läßt es sich vor allem auch bei der erfindungsgemäßen Verwendung beim Fräsen und Gravieren von im Tiefdruck verwendeten Kupferzylindern durch das Entfettungsbad vollständig auch von den Zylinderrändern entfernen. Es tritt auch keine Rückfettung vom Bad zum Zylinder auf, was zu längeren Standzeiten der Bäder führt.The cutting oil according to the invention is characterized by very good fulfillment of requirements 1-3. In particular, however, it can be removed excellently and completely, as also demonstrated in one of the examples below, by an alkaline degreasing bath from a metal surface treated with the cutting oil. Accordingly, especially in the use according to the invention when milling and engraving copper cylinders used in gravure printing, it can also be completely removed from the cylinder edges by the degreasing bath. There is also no regreasing from the bath to the cylinder, which leads to longer service life of the baths.

Das erfindungsgemäße Schneidöl enthält keine gesundheitsgefährdende Substanzen und hat zudem im Gegensatz zum Schneidöl gemäß dem Stand der Technik praktisch keinerlei störenden Eingengeruch.The cutting oil according to the invention does not contain any substances that are hazardous to health and, in contrast to the cutting oil according to the prior art, has practically no unpleasant odor.

Überraschenderweise konnte festgestellt werden, daß bei der erfindungsgemäßen Verwendung eines solchen Schneidöls beim Fräsen und Gravieren von im Tiefdruck verwendeten Kupferzylindern keinerlei Vernebelung des Schneidöls durch die schnellaufende Frässcheibe auftritt, wodurch eine unerwünschte Verunreinigung des Arbeitsplatzes sowie eine nachteilige Belästigung und Gefährdung der dort Beschäftigten vermieden wird.Surprisingly, it was found that when using such a cutting oil according to the invention when milling and engraving copper cylinders used in intaglio printing, there is no nebulization of the cutting oil by the high-speed milling disk, thereby an undesirable contamination of the workplace as well as an adverse nuisance and danger to the employees there is avoided.

Beispiele 1-4 sollen erfindungsgemäße Schneidöle illustrieren. Beispiel 5 zeigt in einem vergleichenden Entfettungsversuch die besonderen Vorteile des erfindungsgemäßen Schneidöls gegenüber einem Schneidöl gemäß dem Stand der Technik. Es zeigt sich, daß die Mindestbehandlungsdauer mit einem Entfettungsbad durch den Gehalt an erfindungsgemäßem Lösungsmittel auf weniger als die Hälfte, bei gleichzeitiger Anwesenheit eines erfindungsgemäßen Tensids auf ca. 1/10 gegenüber der bei einem Schneidöl gemäß dem Stand der Technik benötigten gesenkt wird.Examples 1-4 are intended to illustrate cutting oils according to the invention. Example 5 shows in a comparative degreasing test the particular advantages of the cutting oil according to the invention over a cutting oil according to the prior art. It can be seen that the minimum duration of treatment with a degreasing bath is reduced to less than half by the content of the solvent according to the invention, and in the presence of a surfactant according to the invention to approximately 1/10 compared to that required for a cutting oil according to the prior art.

Beispiel 1 :Example 1 :

  • Schneidöl ausCutting oil
  • 40 % Ricinusöl40% castor oil
  • 59,5 % Diethylenglycoldibutylether59.5% diethylene glycol dibutyl ether
  • 0,5 % Natrium-dodecylbenzolsulfonat0.5% sodium dodecylbenzenesulfonate
Beispiel 2 :Example 2:

  • Schneidöl ausCutting oil
  • 50 % Palmöl50% palm oil
  • 49,8 % Dipropylenglycolmonomethylether49.8% dipropylene glycol monomethyl ether
  • 0,2 % Natrium-cetylethersulfat0.2% sodium cetyl ether sulfate
Beispiel 3 :Example 3:

  • Schneidöl ausCutting oil
  • 45 % Kokosöl45% coconut oil
  • 54 % Tetraethylenglycol54% tetraethylene glycol
  • 1 % Natrium-laurylsulfat1% sodium lauryl sulfate
Beispiel 4 :Example 4:

  • Schneidöl ausCutting oil
  • 56 % Kokosfett56% coconut fat
  • 43,8 % Tripropylenglycolmonomethylether43.8% tripropylene glycol monomethyl ether
  • 0.2% Natriumsalz eines-Fettsäurekondensationsproduktes (LutensitR A-FK der BASF AG)0.2% sodium salt of a fatty acid condensation product (Lutensit R A-FK from BASF AG)
Beispiel 5 :Example 5: EntfettungsversuchDegreasing attempt

Von den zu testenden Schneidölen wird jeweils ein tropfen auf saubere Kupferfolien aufgetragen. Anschließend wird für Z Minuten bei 100 °C getrocknet.One drop of each of the cutting oils to be tested is applied to clean copper foils. The mixture is then dried at 100 ° C. for Z minutes.

Taucht man nun die Folienproblem in eine gängige alkalische Entfettungslösung (zum Beispiel aus 50 g Unilever SU 170 in 600 g Wasser) so heben die Tropfen nach unterschiedlichen Zeiten ab und gehen in Lösung :

  • Schneidöl nach Beispiel 4 13 Sekunden
  • Schneidöl nach Beispiel 4, jedoch ohne Tensid 50 Sekunden
  • Schneidöl nach Stand der Technik (ca. 50% natürliches partielt ungesättigtes Fett, Rest : chlorierte Kohlenwasserstoffe) über 120 Sekunden
If you now dip the film problem in a common alkaline degreasing solution (e.g. from 50 g Unilever SU 170 in 600 g water), the drops will lift off after different times and go into solution:
  • Cutting oil according to example 4 for 13 seconds
  • Cutting oil according to Example 4, but without surfactant for 50 seconds
  • Cutting oil according to the state of the art (approx. 50% natural partial unsaturated fat, rest: chlorinated hydrocarbons) over 120 seconds

Claims (5)

1. Cutting oil for the working of nonferrous metals by cutting, which is based on fatty acid esters of monohydric or polyhydric alcohols in an organic solvent, characterized in that it contains, as the solvent, glycols, oligoglycols, polyglycols or monoethers, diethers, monoesters or diesters thereof, all of which are liquid at room temperature, and a surfactant, preferably an anionic surfactant.
2. Cutting oil according to claim 1, characterized in that it contains 20-80 %, preferably 40-60 %, of solvent and 0,01-5 % preferably 0,1-1 %, of anionic surfactant.
3. Cutting oil according to claims 1 and 2, characterized in that it contains, as the solvent, diethylene glycol dibutyl ether, dipropylene glycol monomethyl ether, tripropylene glycol monomethyl ether and/or tetraethylene glycol.
4. Process for working nonferrous metals by cutting, in particular for milling and/or engraving copper cylinders employed in gravure printing, using a cutting oil, characterized in that a cutting oil according to claims 1-3 is used here.
5. Use of a cutting oil according to claims 1-3 in the working of nonferrous metals by cutting, in particular in the milling and/or engraving of copper cylinders employed in gravure printing.
EP83112390A 1982-12-22 1983-12-09 Cutting oil for non-ferro metal working without removal of chips Expired EP0113863B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3247426 1982-12-22
DE19823247426 DE3247426A1 (en) 1982-12-22 1982-12-22 CUTTING OIL FOR THE BARBING PROCESSING OF COLORED METALS

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EP0113863A2 EP0113863A2 (en) 1984-07-25
EP0113863A3 EP0113863A3 (en) 1986-02-12
EP0113863B1 true EP0113863B1 (en) 1987-09-30

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CA1132602A (en) * 1979-09-10 1982-09-28 Pier P. Rossi Esters of polyvalent alcohols, process for preparing them and their use as lubricating oils
NL8102759A (en) * 1981-06-09 1983-01-03 Unilever Nv ESTERS LUBRICANTS.

Also Published As

Publication number Publication date
EP0113863A3 (en) 1986-02-12
US4578202A (en) 1986-03-25
DE3247426A1 (en) 1984-06-28
DE3373916D1 (en) 1987-11-05
EP0113863A2 (en) 1984-07-25
JPS59120693A (en) 1984-07-12

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