EP1320576A2 - Liquide fonctionnel biodegradable pour entrainements mecaniques - Google Patents

Liquide fonctionnel biodegradable pour entrainements mecaniques

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Publication number
EP1320576A2
EP1320576A2 EP01985265A EP01985265A EP1320576A2 EP 1320576 A2 EP1320576 A2 EP 1320576A2 EP 01985265 A EP01985265 A EP 01985265A EP 01985265 A EP01985265 A EP 01985265A EP 1320576 A2 EP1320576 A2 EP 1320576A2
Authority
EP
European Patent Office
Prior art keywords
water
polyaspartic acid
functional fluid
mol
biodegradable functional
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Withdrawn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
EP01985265A
Other languages
German (de)
English (en)
Inventor
Mathias Woydt
Michael HÖTGER
Jens Kleemann
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.)
TEA GmbH
Original Assignee
TEA 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 TEA GmbH filed Critical TEA GmbH
Publication of EP1320576A2 publication Critical patent/EP1320576A2/fr
Withdrawn legal-status Critical Current

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    • 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
    • C10M169/041—Mixtures of base-materials and additives the additives being macromolecular compounds only
    • C—CHEMISTRY; METALLURGY
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    • 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
    • C10M105/10—Lubricating compositions characterised by the base-material being a non-macromolecular organic compound containing oxygen having hydroxy groups bound to acyclic or cycloaliphatic carbon atoms
    • C10M105/14—Lubricating compositions characterised by the base-material being a non-macromolecular organic compound containing oxygen having hydroxy groups bound to acyclic or cycloaliphatic carbon atoms polyhydroxy
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    • 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
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    • C10M129/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing oxygen
    • C10M129/02—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing oxygen having a carbon chain of less than 30 atoms
    • C10M129/16—Ethers
    • C10M129/20—Cyclic ethers having 4 or more ring atoms, e.g. furans, dioxolanes
    • C—CHEMISTRY; METALLURGY
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    • C10M145/00—Lubricating compositions characterised by the additive being a macromolecular compound containing oxygen
    • C10M145/18—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M145/24—Polyethers
    • C10M145/26—Polyoxyalkylenes
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    • C10M145/18—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M145/24—Polyethers
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    • C10M173/02—Lubricating compositions containing more than 10% water not containing mineral or fatty oils
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    • C10M2201/02—Water
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    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/02—Hydroxy compounds
    • C10M2207/021—Hydroxy compounds having hydroxy groups bound to acyclic or cycloaliphatic carbon atoms
    • C10M2207/022—Hydroxy compounds having hydroxy groups bound to acyclic or cycloaliphatic carbon atoms containing at least two hydroxy groups
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    • C10M2207/02—Hydroxy compounds
    • C10M2207/021—Hydroxy compounds having hydroxy groups bound to acyclic or cycloaliphatic carbon atoms
    • C10M2207/022—Hydroxy compounds having hydroxy groups bound to acyclic or cycloaliphatic carbon atoms containing at least two hydroxy groups
    • C10M2207/0225—Hydroxy compounds having hydroxy groups bound to acyclic or cycloaliphatic carbon atoms containing at least two hydroxy groups used as base material
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    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/04—Ethers; Acetals; Ortho-esters; Ortho-carbonates
    • C10M2207/044—Cyclic ethers having four or more ring atoms, e.g. furans, dioxolanes
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    • C10N2020/00—Specified physical or chemical properties or characteristics, i.e. function, of component of lubricating compositions
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    • C10N2050/00—Form in which the lubricant is applied to the material being lubricated
    • C10N2050/01—Emulsions, colloids, or micelles

Definitions

  • Biodegradable functional fluid for mechanical drives are Biodegradable functional fluid for mechanical drives.
  • the present invention relates to biodegradable functional fluid for mechanical drives according to the preamble of the main and secondary claims.
  • glycols and polyglycols for lubrication purposes.
  • Polyglycols have a favorable viscosity-temperature behavior, even with high shear gradients, high shear stability and good lubrication behavior, as well as wear protection and high-pressure properties in mixed and boundary friction conditions. When subjected to thermal stress, they decompose only at temperatures above 260 ° C, depending on the molecular structure and without additives. Resistance to oxidation can be achieved with additives.
  • liquid polyethylene glycols with a molar mass of 200-400 g / mol are preferably used, which are water-soluble, rapidly biodegradable, physiologically harmless and skin-friendly.
  • Hydraulic fluids with 30 to 40% by weight water, 35 to 50% by weight
  • Alkylmorpholine are included.
  • this morpholine component secures the high pressure
  • triazoles and thiazoles can be included as anti-corrosion agents.
  • these liquids are 85% biodegradable, however all additives according to VwVwS-99 are in the water hazard classes, in the following
  • WGK called, WGK 2 or WGK 3 classified.
  • the invention has for its object to provide biodegradable and non-toxic functional fluids for mechanical drives, which are particularly suitable for the hydrodynamic lubrication of slide bearings, preferably for crankshafts of superheated steam engines, with the usual, not over-precise bearing play.
  • These functional fluids are to be used in closed engine systems even at sump temperatures of higher than 120 ° C, e.g. B. in the lubricant pan under a crank mechanism, be applicable and be based on water or be dilutable with water.
  • water-based functional fluids according to the invention consist of water and an addition of polyaspartic acid.
  • the polyaspartic acid contained in all of the above-mentioned functional liquids according to the invention preferably has a molar mass greater than 1,000 g / mol, preferably up to 3,400 g / mol or up to 10,000 g / mol. You can preferably both in the form of
  • the functional liquid consists of water and polyethylene and / or alkylene glycols with a molar mass of greater than 1200 g / mol or from proportions of both of the aforementioned substances with the addition of the salts of polyaspartic acid mentioned.
  • functional fluids consist of 1.2 monopropylene glycol, also called 1.2 propanediol - and an addition of polyaspartic acid.
  • functional fluids consist of 1.2 monopropylene glycol and polyethylene or polyalkylene glycols as well as an addition of polyaspartic acid.
  • functional fluids consist of triethylene glycol and an addition of polyaspartic acid.
  • the functional liquids can be diluted with water and are biodegradable, the basic liquid consisting of polyethylene or polyalkylene glycols with a molar mass of less than 1,000 g / mol or mixtures of these substances and containing polyaspartic acid.
  • the functional liquids can be diluted with water and are partially biodegradable, the basic liquid consisting of tocopherol - vitamin E - with the addition of a proportion of polyaspartic acid with a molar mass of greater than 1,000 to 10,000 g / mol.
  • Functional fluids composed in this way are suitable for application temperatures of less than 100.degree.
  • Tocopherols are natural and human identical substances.
  • Functional fluids according to the invention contain salts of polyaspartic acid, the proportion of which is advantageously ⁇ 5% by weight.
  • All types of D-, L- and DL-polyaspartic acids are suitable, but preferably L-polyaspartic acid, as a salt of potassium, sodium, lithium or ammonium with a molecular weight between 1,000 and 10,000 g / mol.
  • the molecules are strongly anionic and act as a strong regulator or stabilizer with a TBN number of »100 mgKOH / g for the pH value.
  • the polyaspartic acid acts as a dispersing agent, as a corrosion protection additive and prevents limescale deposits. It can be used up to an ambient temperature of 120 ° C.
  • Polyaspartic acid is a nature-identical substance and is classified as slightly water-endangering "WGK 1" and, in principle, is biodegradable or biodegradable.
  • the polyethylene glycols which can be used according to the invention [CAS: 8038-37- 7; CAS: 9002-90-8; CAS: 25322-58-3] have a molar mass greater than 200 g / mol and preferably up to 3,500 g / mol.
  • the solubility of wax-like polyethylene glycol with a molar mass of 3,500 g / mol is, for example, 56% in water at 20 ° C.
  • polyethylene glycols decompose without residues above 250 ° C. This is very important for use in a steam engine, because the spread of polyethylene glycols into the steam cycle can hardly be ruled out, but remains without consequences.
  • OECD 301 B Because of their water solubility, polyethylene glycols are classified as slightly water-endangering “WGK 1" and can only be classified as toxicological in large quantities.
  • the biodegradability (OECD 301 B) is> 85% for molar masses less than 10,000 g / mol.
  • This glycol form [CAS: 112-27-6] can also be used according to the invention. Because of the water solubility, its low toxicity and the slow biodegradation - 14d> 95% - it is classified as slightly water-endangering "WGK 1" and can be safely used.
  • the butanol-initiated polyalkylene glycols also known as diols, are polymeric
  • Ratio of 1: 9 to 9: 1 are suitable and applicable.
  • the oral mammalian toxicity (LD 50 rat) is greater than 2,000 mg / kg.
  • viscosity and lubricating properties of the functional fluids according to the invention in engine construction common material pairings and constructions, e.g. B. AISn20 for plain bearing treads and tempering steels for the crankshaft.
  • flash point (flash point according to ASTM D-92) from 200 to 250 ° C. of conventional lubricants based on hydrocarbons, e.g. B. mineral or polyalphaolefin oils, which would pose a fire hazard in the event of a leak.
  • hydrocarbons e.g. B. mineral or polyalphaolefin oils
  • the composition according to the invention ensures frost protection down to -30 ° C.
  • tocopherols are suitable as a basis for the biodegradable functional fluids according to the invention for mechanical drives with the addition of a proportion of polyaspartic acid with a molar mass of greater than 1,000 to 10,000 g / mol. Tocopherols' *
  • Functional fluids according to the invention can also be used in underground mining, for engine lubrication and in the food and pharmaceutical industries.

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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)

Abstract

L'invention concerne un liquide fonctionnel biodégradable pour des entraînements mécaniques, à base d'eau, s'utilisant de préférence dans des moteurs à vapeur. L'invention vise à mettre au point des liquides fonctionnels de ce type, en vue d'une utilisation dans des entraînements mécaniques, adaptés notamment à la lubrification hydrodynamique de paliers lisses, de préférence pour des vilebrequins de moteurs à vapeur chaude, avec le jeu de palier habituel, non hyperprécis. Ces liquides fonctionnels doivent pouvoir s'utiliser dans des systèmes motopropulseurs fermés, y compris à des températures de carter inférieur supérieures à 120 DEG C, par ex. dans la cuvette-carter de lubrifiant en dessous d'une transmission à manivelle, et être à base d'eau ou pouvoir est dilués dans de l'eau. A cet effet, il est prévu selon l'invention d'ajouter à l'eau ou à des mélanges eau-glycol, une quantité réduite en termes de pourcentage d'acide polyaspartique, en utilisant de préférence de l'acide polyaspartique d'une masse molaire dépassant 1.000 à 10.000 g/mole.
EP01985265A 2000-09-22 2001-09-20 Liquide fonctionnel biodegradable pour entrainements mecaniques Withdrawn EP1320576A2 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10049175 2000-09-22
DE10049175A DE10049175A1 (de) 2000-09-22 2000-09-22 Biologisch abbaubare Funktionsflüssigkeit für mechanische Antriebe
PCT/DE2001/003672 WO2002024841A2 (fr) 2000-09-22 2001-09-20 Liquide fonctionnel biodegradable pour entrainements mecaniques

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EP1320576A2 true EP1320576A2 (fr) 2003-06-25

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EP (1) EP1320576A2 (fr)
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WO (1) WO2002024841A2 (fr)

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US6913707B2 (en) 2005-07-05
US20040094743A1 (en) 2004-05-20
WO2002024841A3 (fr) 2003-02-13
US7060199B2 (en) 2006-06-13
DE10049175A1 (de) 2002-04-25
US20050143264A1 (en) 2005-06-30
WO2002024841A2 (fr) 2002-03-28

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