EP1606090A2 - Procede de demoulage - Google Patents
Procede de demoulageInfo
- Publication number
- EP1606090A2 EP1606090A2 EP04742285A EP04742285A EP1606090A2 EP 1606090 A2 EP1606090 A2 EP 1606090A2 EP 04742285 A EP04742285 A EP 04742285A EP 04742285 A EP04742285 A EP 04742285A EP 1606090 A2 EP1606090 A2 EP 1606090A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- composition
- ester
- weight
- mold release
- terpene
- 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.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B7/00—Moulds; Cores; Mandrels
- B28B7/38—Treating surfaces of moulds, cores, or mandrels to prevent sticking
- B28B7/384—Treating agents
-
- 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
- C10M141/00—Lubricating compositions characterised by the additive being a mixture of two or more compounds covered by more than one of the main groups C10M125/00 - C10M139/00, each of these compounds being essential
- C10M141/02—Lubricating compositions characterised by the additive being a mixture of two or more compounds covered by more than one of the main groups C10M125/00 - C10M139/00, each of these compounds being essential at least one of them being an organic oxygen-containing compound
-
- 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
- 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
-
- 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
-
- 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
- C10M2207/287—Partial esters
- C10M2207/289—Partial esters containing free hydroxy groups
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/36—Release agents or mold release agents
Definitions
- the present invention relates to a method for improving the release of hydraulic materials, in particular based on concrete, plaster or clay.
- Demolding compositions are known to facilitate the demolding of hydraulic materials such as concrete. These agents have the function of preventing the hardened material from adhering to the mold. Thus, the deterioration of the mold is also avoided. Furthermore, the release agents allow molded parts having a smooth surface appearance to be obtained. A smooth surface appearance without imperfections is particularly appreciated for visible prefabricated parts such as architectural parts or free of special coatings (paints, coatings ...)
- Patent application DE-A-2 253 497 describes mold release compositions in the form of oil-in-water emulsions in which the mineral oil is partially replaced by triglycerides.
- triglycerides can only replace compounds of mineral origin due to their excessive reactivity and the risk of deactivation of the surface of the prefabricated part.
- Patent application EP-A-0 328 158 describes a mold release composition for concrete comprising esters of aliphatic carboxylic acids with mono- or dihydric alcohols, the total number of carbon atoms in the ester being 8 to 46 and esters having a melting point above 35 ° C. These products are advantageous from an environmental point of view but do not provide better performance than oils of mineral origin in terms of mold release.
- Patent application EP-A-0 561 465 describes a biodegradable mold release composition in the form of an oil-in-water emulsion comprising esters of hindered polyhydric alcohol and aliphatic carboxylic acids. However, the emulsion compositions generally require the introduction of surfactants stabilizing the emulsion.
- the object of the present invention is to propose a method for improving the demolding of parts based on concrete, plaster or clay, comprising the application of a high-performance demolding composition and not having the abovementioned drawbacks.
- Such a composition the water concentration of which is less than 0.2%, and therefore not emulsified, is also called in the technical field "whole oil”. It thus overcomes the stability problems inherent in an emulsion formulation.
- the fatty acid bearing 4 to 24 carbon atoms is preferably a monocarboxylic acid.
- dicarboxylic acid esters may also be present in the composition.
- the mono-carboxylic acids the aliphatic monocarboxylic acids with a straight or branched chain, saturated or unsaturated, are preferred. Particularly preferred is the acid ester of an unsaturated acid.
- the ester is preferably an acid ester comprising 16 to 20 carbon atoms.
- it is a complex acid ester comprising 16 to 18 carbon atoms.
- These acids also called “techniques” often include a mixture of acids and therefore inexpensive.
- Particularly preferred in this context are the oleic, stearic, palmitic, linoleic or ricinoleic type acids, for example tall oil fatty acids.
- the composition comprises an ester of an acid as defined above and of a neopentylpolyol carrying at least three hydroxyl groups.
- the neopentylpolyol can advantageously be chosen from the group comprising trimethylolpropane, ditrimethylolpropane, pentaerythritol, di-pentaerythritol, tri-pentaerythritol, trimethylolbutane and mixtures comprising these.
- These alcohols are characterized by the fact of not having a hydrogen atom in the ⁇ position of the hydroxyl groups. This structure gives them a particular stability, in particular with respect to heat.
- the ester can be a total ester, in which all of the hydroxyl groups are esterified. However, it can also be partial esters, having a certain number of free hydroxyl functions. Finally, the composition can also comprise complex esters, obtained by successive esterification in the presence of monocarboxylic acids and dicarboxylic acids. However, the latter are less sought after because of their high viscosity.
- the mold release composition comprises the abovementioned ester in a proportion of between 10 and 100% by weight, preferably between 20 and 60% by weight.
- the mold release composition comprises, in addition to the abovementioned ester, one or more terpene derivatives.
- Terpenes are a class of hydrocarbons found in plants and composed of isoprene units. They may especially be terpene alcohols. Among these alcohols, terpineols and their isomers, of general formula C 10 H 17 OH, are preferred. Natural products such as pine oil are also advantageous.
- the terpene derivative is present in the composition in a proportion of between 0 and 90% by weight, in particular from 10 to 70% by weight,
- the release composition further comprises an inorganic component.
- This mineral component can be a mineral solvent and / or a mineral oil.
- Solvents or mineral oils are understood to mean mixtures of hydrocarbons of mineral or synthetic origin, more or less heavy, containing mainly aromatic, paraffinic and cycloparaffinic hydrocarbons.
- the mineral components can be present in the mold release composition in a proportion of between 0 and 90%. Preferably, when they are present, they constitute 10 to 70% by weight.
- release compositions described above can of course also contain additives customary in the material. Among these agents, mention may be made, for example, of wetting agents, anticorrosion agents, antioxidant agents, waxes and resins.
- a release composition particularly preferred in the context of the invention comprises 30 to 90% by weight, preferably 35 to 50% by weight of ester as defined above and from 10 to 70% by weight, preferably 50 to 65% by weight of terpene derivative.
- An especially preferred mold release composition consists of these two components, to the exclusion of any other additional component.
- the preparation of the mold release compositions described above is carried out in a manner known per se.
- the composition can be prepared by simple mixing at room temperature of the raw materials until a homogeneous mixture is obtained.
- the preparation is easier than in the case of a mold release composition in the form of an emulsion requiring an emulsification step in the presence of surfactants.
- the process improving the release of parts based on concrete, plaster or clay according to the invention comprises the application of a composition as described above on the mold.
- This application can be done by any means known to those skilled in the art, for example by spraying or application with a cloth.
- a particularly advantageous example of application is spray application.
- the consumption of the release composition, applied by spraying, is generally 50 to 100 m 2 / liter.
- compositions based on concrete, plaster or clay can be done in the usual manner.
- a pentaerythritol ester of tall oil fatty acid (Resinoline E 500, Terpene and Resinole Derivatives, France) is used.
- This product has a viscosity at 20 ° C of 175 cSt.
- the acid number measured is 15 mg KOH / g of product.
- a mold release composition is prepared by mixing at room temperature 4 kg of E 500 resinin and 6 kg of mixture of pine oil and terpene alcohols comprising from 88 to 93% by weight of terpene-ol alcohol (Dertol 90, Terpene and Resinoleic Derivatives, France).
- composition thus obtained has a viscosity at 20 ° C of 60 cSt. Its acid number is 6 mg KOH / g of product.
- a mold release composition is prepared by diluting at room temperature 1 kg of the composition of the previous example with 1 kg of white spirit type solvent flavored (Spirdane D60, Total, France).
- the composition thus obtained has a viscosity at 20 ° C of 6.22 cSt and an acid number of 3.2 mg KOH / g of product.
- a mold release composition is prepared by mixing at room temperature 4 kg of pentaerythritol ester of tall oil fatty acid (Resinoline E 500, Terpene and Resinoleic Derivatives, France) with 6 kg of white spirit flavored solvent (Spirdane D60, Total, France).
- composition thus obtained has a viscosity at 20 ° C of 7.3 cSt and an acid number of 5 mg KOH / g of product.
- a release composition is prepared by diluting at room temperature 5 kg of the composition of Example 2 with 5 kg of paraffinic petroleum oil (HMVIP30, Shell, France).
- the composition thus obtained has a viscosity at 20 ° C of 15.6 cSt and an acid number of 3 mg KOH / g of product.
- mold release composition In the laboratory, the consumption of mold release composition is approximately 50 m 2 / liter. Then pour into the mold normal concrete, non-adjuvant, non-stoving, according to the specifications given in Table 1, and comprising as cement, a cement of Saint Pierre La Cour type CEM I 52.5 CPA CE CP2 NF. The concrete composition thus obtained is poured into the mold and then vibrated with the needle (2 times 20 s).
- the concrete part is removed from the mold at 24 hours after pouring.
- the application performance of the mold release compositions are evaluated according to the criteria for observing the part and the mold detailed in Table 2. This thus evaluates both the appearance of the concrete part and the appearance of mold.
- the test is repeated at least three times successively to better assess the performance of the mold release composition.
- the results of the evaluation of the different mold release compositions following the application test are given in Table 4.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Moulds, Cores, Or Mandrels (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Cleaning By Liquid Or Steam (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0303503A FR2852550B1 (fr) | 2003-03-21 | 2003-03-21 | Procede de demoulage |
FR0303503 | 2003-03-21 | ||
PCT/FR2004/000667 WO2004085126A2 (fr) | 2003-03-21 | 2004-03-18 | Procede de demoulage |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1606090A2 true EP1606090A2 (fr) | 2005-12-21 |
EP1606090B1 EP1606090B1 (fr) | 2009-07-22 |
Family
ID=32922365
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP04742285A Expired - Lifetime EP1606090B1 (fr) | 2003-03-21 | 2004-03-18 | Procede de demoulage |
Country Status (8)
Country | Link |
---|---|
US (1) | US20070141240A1 (fr) |
EP (1) | EP1606090B1 (fr) |
CA (1) | CA2519757C (fr) |
DE (1) | DE602004022146D1 (fr) |
ES (1) | ES2330003T3 (fr) |
FR (1) | FR2852550B1 (fr) |
WO (1) | WO2004085126A2 (fr) |
ZA (1) | ZA200507556B (fr) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR3035659B1 (fr) * | 2015-04-28 | 2019-11-01 | Coreva Technologies | Utilisation d'une composition comprenant un mono- a tetra- alkylenate en c7-c15 de mono- a tetra- (trialkanol en c3-c6) comme auxiliaire de mise en œuvre de produits bitumineux et/ou de beton |
CN115161101A (zh) * | 2022-02-22 | 2022-10-11 | 马鞍山中集瑞江润滑油有限公司 | 一种光亮水泥制品脱模剂 |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1440356A (en) * | 1920-06-22 | 1922-12-26 | Jacque C Morrell | Suspension and emulsion and process of making same |
US3526596A (en) * | 1968-06-05 | 1970-09-01 | Quaker Chem Corp | Lubricants for metalworking operations |
BE791210A (fr) | 1971-11-22 | 1973-05-10 | Improtec Technical Improvement | |
JPS5312659B2 (fr) * | 1973-05-28 | 1978-05-02 | ||
FR2523999B1 (fr) * | 1982-03-25 | 1986-04-11 | Chryso Sa | Produit de demoulage pour liants hydrauliques |
DK216984D0 (da) | 1984-05-01 | 1984-05-01 | Koege Kemisk Vaerk | Fremgangsmaade til forbedring af frigoerelse af beton fra stoebeforme |
ATE158222T1 (de) | 1992-03-20 | 1997-10-15 | Unichema Chemie Bv | Formtrennzusammensetzung |
US5523025A (en) * | 1995-02-23 | 1996-06-04 | Colgate-Palmolive Co | Microemulsion light duty liquid cleaning compositions |
DE19516028A1 (de) * | 1995-05-04 | 1996-11-07 | Henkel Kgaa | Aromatenfreie Lösungsmittel für Druckfarben |
DE19651994A1 (de) * | 1996-12-13 | 1998-06-18 | Basf Ag | Verfahren zur Herstellung von selbsttrennenden, kompakten oder zelligen, gegebenenfalls Verstärkungsmittel enthaltenden Formkörpern aus Polyisocyanat-Polyadditionsprodukten und innere Formtrennmittel hierfür |
US5895778A (en) * | 1997-08-25 | 1999-04-20 | Hatco Corporation | Poly(neopentyl polyol) ester based coolants and improved additive package |
SG101544A1 (en) * | 1998-04-27 | 2004-01-30 | Teijin Ltd | Carbonic acid diester, aromatic polycarbonate and facilities, and preparation thereof |
US6096465A (en) * | 1998-12-04 | 2000-08-01 | Fuji Xerox Co., Ltd. | Toner for developing electrostatic latent image, method for manufacturing the same, developer and method for forming image |
WO2002046271A1 (fr) * | 2000-12-07 | 2002-06-13 | Teijin Limited | Procede et appareil pour produire du polycarbonate aromatique |
-
2003
- 2003-03-21 FR FR0303503A patent/FR2852550B1/fr not_active Expired - Fee Related
-
2004
- 2004-03-18 DE DE602004022146T patent/DE602004022146D1/de not_active Expired - Fee Related
- 2004-03-18 ES ES04742285T patent/ES2330003T3/es not_active Expired - Lifetime
- 2004-03-18 US US10/550,127 patent/US20070141240A1/en not_active Abandoned
- 2004-03-18 CA CA2519757A patent/CA2519757C/fr not_active Expired - Fee Related
- 2004-03-18 WO PCT/FR2004/000667 patent/WO2004085126A2/fr active Application Filing
- 2004-03-18 EP EP04742285A patent/EP1606090B1/fr not_active Expired - Lifetime
-
2005
- 2005-09-19 ZA ZA200507556A patent/ZA200507556B/en unknown
Non-Patent Citations (1)
Title |
---|
See references of WO2004085126A2 * |
Also Published As
Publication number | Publication date |
---|---|
FR2852550A1 (fr) | 2004-09-24 |
FR2852550B1 (fr) | 2005-06-17 |
CA2519757C (fr) | 2012-09-04 |
US20070141240A1 (en) | 2007-06-21 |
CA2519757A1 (fr) | 2004-10-07 |
ES2330003T3 (es) | 2009-12-03 |
DE602004022146D1 (de) | 2009-09-03 |
WO2004085126A3 (fr) | 2005-03-31 |
ZA200507556B (en) | 2007-12-27 |
EP1606090B1 (fr) | 2009-07-22 |
WO2004085126A2 (fr) | 2004-10-07 |
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