EP1285020A1 - Huile polyorganosiloxane lubrifiante, emulsion aqueuse en contenant, leur preparation et leur utilisation pour le demoulage de metaux - Google Patents
Huile polyorganosiloxane lubrifiante, emulsion aqueuse en contenant, leur preparation et leur utilisation pour le demoulage de metauxInfo
- Publication number
- EP1285020A1 EP1285020A1 EP01936529A EP01936529A EP1285020A1 EP 1285020 A1 EP1285020 A1 EP 1285020A1 EP 01936529 A EP01936529 A EP 01936529A EP 01936529 A EP01936529 A EP 01936529A EP 1285020 A1 EP1285020 A1 EP 1285020A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- radical
- pos
- radicals
- oil
- emulsion
- 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- Withdrawn
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
- C08G77/04—Polysiloxanes
- C08G77/38—Polysiloxanes modified by chemical after-treatment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/56—Coatings, e.g. enameled or galvanised; Releasing, lubricating or separating agents
- B29C33/60—Releasing, lubricating or separating agents
- B29C33/62—Releasing, lubricating or separating agents based on polymers or oligomers
- B29C33/64—Silicone
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
- C08G77/04—Polysiloxanes
- C08G77/22—Polysiloxanes containing silicon bound to organic groups containing atoms other than carbon, hydrogen and oxygen
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
- C08G77/04—Polysiloxanes
- C08G77/38—Polysiloxanes modified by chemical after-treatment
- C08G77/382—Polysiloxanes modified by chemical after-treatment containing atoms other than carbon, hydrogen, oxygen or silicon
Definitions
- the invention relates to organofunctional silicone oils, in particular those which have lubricating properties and which can be used, in particular, to allow the demolding of metallic articles molded in fusion and solidified according to the pattern of a mold, also of metallic nature.
- POS polyorganosiloxanes
- the invention also uses aqueous silicone emulsions comprising functionalized POS oils.
- the processes for preparing POS oils and emulsions are also included in the invention. The same applies with regard to a process for molding metal articles, for example aluminum, which involves the POSs and the aqueous silicone emulsions according to the invention.
- the process of designing functionalized POS oils according to the invention finds its basis in a problem encountered in the field of manufacturing metal articles (eg aluminum) by melting the metal, forming molten metal in a mold which is also metallic, solidifying the molten metal in the form imposed by the mold and demolding the solidified metallic article. It is more precisely within the framework of this last stage that the problematic considered here is situated.
- metal articles eg aluminum
- Aluminum is a common raw material for molded parts intended for the automobile: generator, starter, intake tube, cylinder heads, cylinder head covers, oil tank, crankcase and even engine block.
- the parts are obtained by injection of molten metals (Al alloys) into steel molds. These molds weigh several tonnes and are very expensive to produce. It is therefore important to make these molds profitable with a large number of molded parts.
- the temperature of the aluminum alloy introduced into the mold is 720 to 750 ° C.
- the introduction is done under pressure to properly fill the deep parts of the mold. During this introduction under pressure, there is significant friction between the mold and the aluminum. Under high pressure and temperature, aluminum reacts with the mold surface. We thus obtains a very strong adhesion, even the formation of amalgams. The molded part is therefore strongly linked with the mold and cannot be extracted.
- release agents are used. These officers have several functions. During the introduction of aluminum under pressure, they must lubricate the surface of the mold. Thus, contact between the mold steel and aluminum is avoided. There is no reaction between steel and molten aluminum. The surface of the mold remains unchanged and the part can be removed from the mold without much effort.
- Organic oils can thus be used, but at the high temperatures which are those of the release of metals from the mold, these organic oils decompose. This decomposition is not prohibitive, provided that the decomposition products: - are lubricating,
- Mineral oils are good lubricants and produce non-corrosive gaseous products, but also carbon, which strongly fouls molds. In addition, the fumes given off during the formation of coal are difficult to evacuate.
- Silicone oils are not very lubricating, but give a small volume of easily evacuatable gas, and do not clog molds thanks to the formation of silica at high temperature.
- the part In certain applications, the part must be able to be easily and correctly painted (“paintable").
- the residual dimethylsiloxane oils on the molded parts make the application of a paint very difficult. Many washes are necessary, without this being entirely satisfactory.
- the specifications for a release agent based on lubricating silicone oil would firstly be that this oil is obviously demouldable, that it is organophilic (therefore "paintable") and that it decomposes without formation of corrosive gas and without producing a significant amount of carbonaceous residues.
- POS polyorganosiloxane
- cyclic oligoorganosiloxane comprising 3, 4, 5 or 6 siloxy units D (D 3 , D 4 , D 5 , D 6 ), ⁇ , w-trimethylsiloxyl polyorganosiloxane comprising:
- This agent which is in fact a surfactant, is present in the emulsion in an amount of 0.2 to 10 parts by weight per 100 parts by weight of POS of the polymethylorganosiloxane type carrying trimethylsilyl ends and whose functionalization radicals of the units siloxyle D can be:
- alkylaryl such as ⁇ -methylstyryl
- an alkyl residue for example C10 or C3 carrying a carboxylic function possibly esterified by an alkyl radical in C12 or Cl 7, for example.
- POS oils and the corresponding aqueous silicone emulsions appear to be perfectible with regard to the properties of lubrication, release properties, "paintability", cost and harmfulness of the products. , decomposition and application to the metal surface of the mold (transfer, flow, spreading).
- JP 11 07 72 33 relates to an aqueous silicone emulsion of functional POSs containing additives of the thickening type (eg high molecular weight polyethylene glycol), acrylic resins, paraffmic waxes, and / or extreme pressure additives.
- the thickening agents are bad lubricants, that paraffinic or other waxes generate decompositions which foul the mold and that acrylic resins are bad mold release agents.
- European patent application No. 0 825 004 describes a release agent consisting of an aqueous silicone emulsion the main ingredient of which is the condensation reaction product between diorganopolysiloxanes, which may be poly (dimethyl) (methyl) organosiloxane, ⁇ - trimethylsilyl, comprising siloxyl units D methylated and functionalized with: - alkylaryls of the ⁇ -methylstyryl type,
- the dimethylated D siloxy units represent less than 20% of the D units of the silicone chain.
- This type of functionalization by ⁇ -methylstyrene radicals, hydrophobic radicals (for example dodecyl) and alkyltrichlorosilane or alkyltrialcoxysilane radicals seems to bring results in terms of paintability of demolded metal parts but suffers with regard to the lubricating properties and the ease of layer application on the metal surface of the mold.
- the type of functionalization used in this European application No. 0 825 004 aims to increase the viscosity of the oil for demolding, in order also to increase the quantity of products available at the surface after application of the emulsion.
- EP-A-0 745 632 relates to POSs functionalized with a view to imparting them with water-repellency properties of anti-adhesion, water-tightness, lubricants, resistance to weathering, temperature and selective gas permeability.
- the functionalized POSs concerned comprise D units substituted with two methyls and D units functionalized with organosiloxane radicals of the type - (OSi (CH 3 ) 2 ) x -H.
- the terminal units M of these functionalized POSs are of the type - RA with A corresponding to - (CH) - ⁇ - 20 and A representing an amino, epoxidized, hydroxylated or organosilylated functional residue.
- EP-A-0 755 961 discloses POS functionalized by perfluorinated groups. More specifically, these perfluorinated groups are of the alkylene patella / perfluoroalkyl residue type, alkylene patella / perfluoroalkyl ester of dicarboxylic acid ester (mono malonate or diester). Functionalization with perfluorinated patterns is not sufficient with regard to mold release applications ("paintability", lubricating power, ease of application).
- one of the essential objectives of the present invention is to propose new functionalized lubricating POS oils capable of satisfying the above-mentioned specifications by providing a significantly positive response in terms of performance improvement in the application of metal lubrication / mold release, among others.
- Another essential objective of the invention is to provide an aqueous silicone emulsion containing the aforementioned functionalized lubricating POS oil, which is comparable to a real improvement of the prior art with regard to lubrication, release agent, limitation. negative effects of decomposition, ease of application and spreading in layers on the metal surface, transfer to this metal surface (mold), the "paintablity" of the molded parts, the flow and Cost.
- Another essential objective of the invention is to offer a new functional lubricating POS oil, as well as an aqueous emulsion containing it, which does not only allow a limited flow of the oil or the emulsion after application to the surfaces. metallic (for example from the mold), but which especially optimizes the transfer of the functional POS oil on the hot metallic surface of the mold.
- Another essential objective of the invention is to provide a functionalized lubricating POS oil and an aqueous silicone emulsion in a container which allow improved contact of the emulsion on the metal surface of the mold.
- Another essential objective of the invention is to provide a new functionalized lubricating POS oil for demolding and an emulsion containing it, the formulations of which will comprise a limited number of active ingredients of the anti-foam type, surfactants, thickeners, etc.
- Another essential objective of the present invention is to provide simple and economical methods of preparing functionalized lubricating POS oils, of the type of those mentioned above.
- Another essential objective of the present invention is to provide a process for obtaining lubricating aqueous silicone emulsions comprising the lubricating functionalized POS oils mentioned above.
- Another objective of the invention is to propose a method of manufacturing metal parts by molding and demolding, using a demolding agent of the lubricating functionalized silicone type.
- Another essential objective of the invention is to provide a functionalized lubricating POS oil, in particular for demolding molten metals, this oil having the characteristic of having an optimized functionalization.
- POS PolyOrganoSiloxanes
- R W representing a radical comprising at least 8, preferably from 8 to 50 carbon atoms and carrying at least one lubricating organophilic function
- - R Y representing a radical carrying at least one attachment function capable of forming hydrogen bonds and / or ionic interactions with a metal support; and in that they correspond to the following general formula (I): (I) M ⁇ [D w ] a [D y ] b [D R ] C M ⁇ in which:
- M ⁇ , M ⁇ are units M identical or different from each other, in each of which R independently corresponds to a linear or branched (cyclo) alkyl group in Ci - C ⁇ 2 (preferably in Ci - C 6 ) to an aryl , to an aralkyl or to an alkylaryl, (these groups being optionally substituted), or alternatively to a radical W or Y;
- the D w are identical or different units D between them, in each of which at least one radical R corresponds to W; W being more especially selected from the group comprising: - linear or branched C 8 - C 30 alkyls,
- R 1 is a divalent hydrocarbon radical comprising at least 1 and preferably from 2 to 29 carbon atoms
- R 2 is hydrogen or a monovalent hydrocarbon radical containing at least 1 and preferably from 1 to 30 atoms; - monovalent hydrocarbon radicals of general formula: (III)
- R 3 -OOCR 4 in which:
- R is a divalent hydrocarbon radical comprising at least 1 and preferably from 3 to 29 carbon atoms; and - R 4 is a monovalent hydrocarbon radical comprising at least 1 and preferably from 1 to 30 atoms; - monovalent hydrocarbon radicals of general formula: (IV)
- R 5 is a divalent hydrocarbon radical comprising at least one carbon atom, preferably between 2 to 30 carbon atoms, and R 6 is a monovalent hydrocarbon radical comprising at least one carbon atom, preferably from 1 to 30 atoms of carbon; -
- COOR 6 is preferably located in para; D y are D units which are identical or different from each other, in each of which at least one radical R corresponds to Y chosen from monovalent radicals of general formula (V): -Sp-Uac
- A independently represents: f H? °
- T 2 (with T 1 , T 2 independently representing a C1-C6 alkyl or alkoxyl)
- D corresponds to N, CH;
- - G independently represents an alkyl or halogen substituent
- - J independently represents SH, OH, NH 2 , N [CH 2 ) 2 -OH] 2 , SO 3 " , or M + ;
- - POS (I) comprising at least one siloxyl unit D 'substituted by a radical of formula: - (OSiR' 2 ) x -H with R independently corresponding to a monovalent hydrocarbon group free of ethylenic unsaturation and x of between 1 and 20;
- the inventors also had the merit of giving up this approach, which constitutes one of the dominant currents of the prior art, in order to develop a new concept according to which groups which attach to metals are introduced, in particular on the constituent metals. of the mold (steel), to thus favor the demolding and lubrication of the parts to be demolded, which are for example made of aluminum.
- this POS oil is particularly effective with regard to the transfer to the metal surface (for example from the mold), since it is in the aqueous silicone emulsion intended for the application in a layer.
- the POSs concerned by the invention can be linear, branched or cyclic. Naturally, mixtures of these different copolymers can be used to constitute the oil according to the invention.
- the POSs comprise more than 10 siloxyl units, so that they will be copolymers rather than cooligomers. Even if the POSs according to the invention can comprise, in a limited quantity, T and / or Q siloxyl units, the POSs according to the preferred embodiment of the invention only comprise M (M ⁇ , M ⁇ units as defined supra) and D (D w , D y , D R as defined above).
- these POS MDs can also comprise residual units D 0H which are identical or different from each other, in each of which one of the radicals R corresponds to OH and the other radical R corresponds to a C1-C3 alkyl.
- hydrocarbon refers to saturated or unsaturated radicals comprising, at the very least, carbon and hydrogen atoms and, optionally, silicon atoms, heteroatoms (O, N, S ) or other atoms such as metals.
- Linear C8-C20 alkyls and ⁇ -methylstyryl are W radicals which are very particularly preferred in practice.
- siloxyl units D R , M ⁇ , M ⁇ their substituents are advantageously in practice lower alkyls and more preferably still methyl radicals.
- these new functionalized lubricant POSs will be that of the release of molten metals and / or the lubrication of metal / metal interfaces. But this is not exclusive of other uses for substrates other than metals and for which it is, in particular, to reduce the coefficient of friction.
- these new POS could, for example, be used as a release agent or as a lubricant in metal / plastic interfaces (polyurethane e.g).
- the number of functional radicals W and Y per molecule of linear POS is between 30 and 50 knowing, moreover, that the radicals W represent more than 80% relative to the functional radicals Y.
- the functional radicals W and Y could be carried by slightly branched POSs, or even by cyclic POSs, of formula: [D ⁇ D ⁇ y D ⁇ ], with ⁇ + ⁇ + ⁇ > 3 and a and b ⁇ 0.
- cyclic POSs of formula: [D ⁇ D ⁇ y D ⁇ ], with ⁇ + ⁇ + ⁇ > 3 and a and b ⁇ 0.
- all or part of the silicon atoms of the D siloxyl units of the chain can carry 2 functional radicals Y, 2 functional radicals W or a functional radical Y and a functional radical W, the radicals W, on the one hand, and the radicals Y, on the other hand, being identical or different from each other respectively.
- each functional radical W or Y can comprise one or more lubricating organophilic functions and one or more attachment units Uac, respectively.
- Each Uac attachment unit can also carry one or more Fac attachment functions.
- the POS ideally comprises only functional radicals W and Y in the chain and at the ends as well as radicals R at the ends only.
- radicals R, R ° to R 6 of formulas (I) to (IV) are defined as indicated below:
- - R is chosen from the group comprising: methyl, ethyl, propyl, butyl, pentyl, hexyl, heptyl, phenyl, tolyl, cyclopentyl, methylcyclopentyl, cyclohexyl, cycloheptyl, methyl being particularly preferred;
- - R ° is chosen from the group comprising: hexyle, heptyle, octyle, nonyle, thesisyle, undécyle, dodécyle, and other C ⁇ -C 20 alkyls;
- - R °° is chosen from the group comprising: vinyl, allyl, acetylene, - R 1 , R 3 , R 5 are chosen from the group comprising: ethylene, propylene, methylethylene, butylene, pentylene and other C 6 alkylene -C 20 ;
- R 2 , R 4 , R 6 are chosen from the group comprising: methyl, ethyl, propyl, butyl, pentyl, hexyl, heptyl, octyl, nonyl, decyl, undecyl, dodecyl, and other C ⁇ 3 -C alkyls 30 , ethylphenyl, propylphenyl, butylphenyl and other alkylaryls, phenylethyl, phenylpropyl, phenylbutyl and other aralkyls.
- radicals W of formula (II) there may be mentioned:
- radicals W of formula (III) mention will be made of: acetyloxymethyl, acetyloxyethyl, acetyloxypropyl, propionyloxyethyl, propionyloxypropyl, butyloxypropyl, and the other acyloxyalkyls.
- radicals W of formula (IV) mention will be made of: the methyl ester of paraethyl (or propyl) benzoic acid.
- Uac bonding units Y radicals are decisive for ensuring strong interactions between the silicone and the metal surfaces. Without being limiting, the inventors were able to isolate a certain number of Uac units present at
- the association of functional radicals W and Y can optionally coexist with other functional radicals different from W, Y and R.
- the POS according to the invention can comprise at least one motif
- siloxyl D (identical or different from one another when there are several) and in which (or each of which when there are several) at least one radical R corresponds to Z chosen from the group comprising radicals derived or not from Sp as defined above and carrying reactive functions
- Fr - of epoxy, vinyl, isocyanate, primary or secondary amine, acid halide or alcohol;
- the viscosity of functionalized lubricating POS oils is an important parameter with regard to the application properties, for example: deposition of a layer on the metal surface of a mold (spreading, flow, homogeneity of the layer).
- the POS is in the form of an oil whose viscosity at 25 ° C is between 100 and 200,000 mm 2 / s, preferably between 1,000 and 10,000 mm 2 / s.
- the invention relates to a process for preparing the above-defined POSs, essentially consisting in reacting:
- PAHS polyalkylhydrogenosiloxane oil
- This first method of preparation refers to the techniques of grafting by hydrosilylation (addition of olefins on the SiH units).
- the olefinic precursors OP y and OP w of the radicals W and Y can correspond to all or part of the radicals W, Y to be grafted. In other words, this means that it is possible to envisage grafting in a single hydrosilylation stage or even in a hydrosilylation stage followed by successive grafts by any appropriate chemical reaction or chemical bonding of the remaining link (s) of the radical W or Y to be grafted.
- OP ⁇ precursors reacting with at least one reactive function Fr per molecule, this reactive function Fr being selected from the group comprising the following functions: epoxy, and / or hydroxyalkyl.
- the Fr functions of the grafts resulting from the hydrosilylation of the ⁇ OPs are reacted (these grafts preferably corresponding to reactive derivatives of the Sp spacing units) with all or part of a precursor of at least a Uac hanging unit.
- Another grafting mode which may or may not be combined with that by hydrosilylation described above, is a grafting by dehydrogenocondensation.
- the invention relates to a process for the preparation of lubricated functionalized POSs as defined above, this process is characterized in that it essentially consists
- reaction conditions fall within the technique known to those skilled in the art in the field of silicones.
- condensable silanes and / or oligosiloxanes are functionalized by substituting them with Y and W radicals; preferably by hydrosilylation and making sure then a hydrolysis / condensation and / or redistribution takes place to produce functionalized POSs.
- the starting point is functionalized monomers and / or oligomers, which are placed in a condition such that the copolymer is formed by hydrolysis / condensation and / or redistribution.
- the functionalization could take place on the copolymer formed or on the copolymer being formed.
- the invention relates to an aqueous silicone emulsion characterized in that it comprises at least one POS as defined above, at least one surfactant and any other active ingredients chosen from the group comprising: anti-foaming agents, promoters of elongational viscosity, waxes, extreme pressure additives, anti-rust / anti-oxidants and their mixtures.
- the surfactant is chosen from the salts of alkyl diphenyl ether disulfonate. This type of surfactant is described in detail in U.S. Patent No. 5,401,801 which is incorporated in the present disclosure by reference.
- the invention finally relates to the process for obtaining this aqueous silicone emulsion.
- this method essentially consists in mixing POS as defined above with the surfactant (s) with water and with the other active ingredient (s) and in performing an emulsion by stirring during and / or after this mixing. mechanical.
- the mixing and emulsifying means can be apparatuses well known to those skilled in the art.
- the formation of the functionalized POS takes place during the preparation of the emulsion.
- Another object of the invention relates to a process characterized in that, before and / or during molding, the surface of the mold is lubricated using POS oil as defined above and / or using the aqueous emulsion as defined above.
- the invention relates to a method for molding a metallic article (preferably aluminum) using an equally metallic mold, characterized in that, before and / or during molding, the surface is lubricated metallic mold using POS oil as defined above and / or using the aqueous emulsion as defined above.
- W 3 - (- C 14 H 29 ) and marketed by the company DOWCORNTNG under the name DC 203.
- POS Ti to T 5 and I1 to I 4 of Table 1 are prepared by hydrosilylation of olefinic precursors OP, OP y and OP z of D w , D y and D z from non-functionalized hydrogenated POS Al, in the presence of catalyst vs.
- 25 ° C is 1270 ⁇ rmVs.
- the residual SiH function rate is 970 ppm.
- the olefinic precursors used in step (i) are all C 12 except for T 15 T 2 respectively C ⁇ 4 , C 8 .
- the TT conversion rate of SiH by gasometry is 75.3% and after 30 hours of reaction, it is 94.5%.
- 9.8 g of allylglycidyl ether (0.086 moles) are then added and after 24 hours of additional reaction, the conversion rate is 99.3%.
- 2 g (0.018 moles) of allylglycidylether and 0.74 g of the Karstedt platinum solution in hexamethydisiloxane are then added.
- the conversion rate of the SiH units is 99.7%.
- the volatiles are then removed by evaporation under vacuum (7 mbar for 1 h 30 at 90 ° C).
- a dosage of the epoxy functions by potentiometry gives 0.38 moles of epoxys Kg and confirms the desired structure.
- ⁇ 2.2 -ETi is prepared in the same way as the EI 3 emulsion, except for the oil used (Ti oil).
- ⁇ 2.3 -EI 2; EL and EI 5 are prepared in the same way as the emulsion EI 3 , except for the oil used, respectively: I 2 , L and I 5 .
- ⁇ 2.4 - Preparation of the formulation F EI 3 -a from the emulsion EI 3 :
- the emulsion obtained in 2.1 (10g) is diluted by gradual addition of deionized water (39.5g) containing 0.5g of Crodet S40. A dry extract of 10% is obtained. 5mg of A414 antifoam from Rhodia Silicones SAS is added. ⁇ 2.5 - Preparation of the F EI 3 -b formulation from the EI 3 emulsion:
- FEia, FEib and FEic formulations are prepared from the Ei emulsion using, for FEia, the same methodology as for FEI 3 -a and, for FEib and FEic, the same methodology as for FEI 3 b.
- the pin is a steel ball (100C6) 5mm in diameter. It is cleaned with ethanol before use. The ball rests on the steel disc treated with the oil to be evaluated.
- the pawn's charge is 2g, the temperature 23 ° C and the relative air humidity 50%.
- the force with which the pin is driven is measured by a sensor installed in the ball holding arm. A high force corresponds to a poor lubrication effect.
- the oils are deposited on a 10 * 10cm stainless steel plate tilted at 45 °.
- This plate is placed on a heating plate.
- the temperature is adjusted by a thermocouple and the exact temperature of the plate is checked with a surface thermometer.
- oils are deposited with a precision syringe to allow the application of a single drop of oil of well defined size.
- the plate is brought to temperature. Five drops of oil are dropped on the plate two centimeters from the top and about one centimeter apart. Let it run for one minute. The plate is removed and allowed to cool in a horizontal position.
- This plate is placed on a protective plate 10 * 20cm in stainless steel which in turn is placed on a heating plate.
- the inclination of the plates is 45 °.
- the temperature is regulated by a thermocouple placed on the surface of the protective plate 10 * 20cm in stainless steel.
- the temperature of the receiving plate is checked with a surface thermometer.
- the point of impact of the emulsion drops is placed 4cm from the bottom of the receiving plate.
- the plate is brought to temperature. A precise number of drops of emulsion are dropped on the tared receiving plate. After application, the receiving plate is removed and weighed. The difference in weight indicates the quantity of product transferred for the selected emulsion.
- the process is repeated for each emulsion to be evaluated under the same conditions in order to be able to compare.
- oil I makes it possible to exceed in performance, the emulsions specially formulated for the application.
- the emulsions, formulated or not and based on oil I according to the invention make it possible to obtain particularly advantageous results in terms of transfer to a steel plate at 200 ° C.
- the FEI 2 b formulation provides a 58% improvement in transfer performance compared to the E 2 control .
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Abstract
Description
Claims
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0006234 | 2000-05-16 | ||
| FR0006234A FR2809111B1 (fr) | 2000-05-16 | 2000-05-16 | Huile polyoganosiloxane lubrifiante, emulsion aqueuse en contenant, leur preparation et leur utilisation pour le demoulage de metaux |
| PCT/FR2001/001479 WO2001088018A1 (fr) | 2000-05-16 | 2001-05-15 | Huile polyorganosiloxane lubrifiante, emulsion aqueuse en contenant, leur preparation et leur utilisation pour le demoulage de metaux |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP1285020A1 true EP1285020A1 (fr) | 2003-02-26 |
Family
ID=8850278
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP01936529A Withdrawn EP1285020A1 (fr) | 2000-05-16 | 2001-05-15 | Huile polyorganosiloxane lubrifiante, emulsion aqueuse en contenant, leur preparation et leur utilisation pour le demoulage de metaux |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US6905540B2 (fr) |
| EP (1) | EP1285020A1 (fr) |
| AU (1) | AU2001262416A1 (fr) |
| CA (1) | CA2408742A1 (fr) |
| FR (1) | FR2809111B1 (fr) |
| WO (1) | WO2001088018A1 (fr) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2416505A (en) * | 2004-07-27 | 2006-02-01 | Sternford Ltd | Using de-ionised water to apply a casting die lubricant |
| DE602005011330D1 (de) * | 2004-12-15 | 2009-01-08 | Dow Corning | Sulfonatfunktionelle organopolysiloxane |
| US8993707B2 (en) * | 2012-08-23 | 2015-03-31 | Wacker Chemical Corporation | Aqueous epoxy and organo-substituted branched organopolysiloxane emulsions |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3600402A1 (de) * | 1986-01-09 | 1987-07-16 | Goldschmidt Ag Th | Verfahren zur herstellung von polyurethanformkoerpern |
| JPH0570711A (ja) * | 1991-09-17 | 1993-03-23 | Nippon Parkerizing Co Ltd | アルミニウム含有金属材料の親水化処理剤 |
| DE69321576T2 (de) * | 1993-04-14 | 1999-05-12 | Dow Corning Toray Silicone Co., Ltd., Tokio/Tokyo | Siliconemulsion |
| US5389365A (en) * | 1994-02-07 | 1995-02-14 | Dow Corning Corporation | Silicone terpolymer containing water-in-oil emulsion derived from unsaturated ethylene oxides |
| FR2727119B1 (fr) * | 1994-11-18 | 1997-01-03 | Rhone Poulenc Chimie | Polyorganosiloxanes fonctionnalises et l'un de leurs procedes de preparation |
| JPH08325381A (ja) * | 1995-05-31 | 1996-12-10 | Toray Dow Corning Silicone Co Ltd | 有機ケイ素化合物およびその製造方法 |
| JP3524635B2 (ja) * | 1995-06-30 | 2004-05-10 | 東レ・ダウコーニング・シリコーン株式会社 | シリコーン水性エマルジョン型離型剤およびその製造方法 |
| FR2737215B1 (fr) * | 1995-07-25 | 1997-10-17 | Rhone Poulenc Chimie | Polyorganosiloxanes perhalogenes et leurs procedes d'obtention |
-
2000
- 2000-05-16 FR FR0006234A patent/FR2809111B1/fr not_active Expired - Fee Related
-
2001
- 2001-05-15 CA CA002408742A patent/CA2408742A1/fr not_active Abandoned
- 2001-05-15 WO PCT/FR2001/001479 patent/WO2001088018A1/fr not_active Ceased
- 2001-05-15 EP EP01936529A patent/EP1285020A1/fr not_active Withdrawn
- 2001-05-15 US US10/276,812 patent/US6905540B2/en not_active Expired - Fee Related
- 2001-05-15 AU AU2001262416A patent/AU2001262416A1/en not_active Abandoned
Non-Patent Citations (1)
| Title |
|---|
| See references of WO0188018A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| US20040024162A1 (en) | 2004-02-05 |
| FR2809111B1 (fr) | 2004-04-16 |
| CA2408742A1 (fr) | 2001-11-22 |
| FR2809111A1 (fr) | 2001-11-23 |
| WO2001088018A1 (fr) | 2001-11-22 |
| AU2001262416A1 (en) | 2001-11-26 |
| US6905540B2 (en) | 2005-06-14 |
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