WO1995001247A1 - Utilisation d'acides aminoalkylenephosphoniques et/ou de leurs sels comme agent de demoulage d'objets conformes a base d'un liant hydraulique - Google Patents
Utilisation d'acides aminoalkylenephosphoniques et/ou de leurs sels comme agent de demoulage d'objets conformes a base d'un liant hydraulique Download PDFInfo
- Publication number
- WO1995001247A1 WO1995001247A1 PCT/FR1994/000718 FR9400718W WO9501247A1 WO 1995001247 A1 WO1995001247 A1 WO 1995001247A1 FR 9400718 W FR9400718 W FR 9400718W WO 9501247 A1 WO9501247 A1 WO 9501247A1
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- WIPO (PCT)
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- formula
- group
- salts
- use according
- carbon atoms
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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
Definitions
- the present invention relates to the use of aminoalkylenephosphonic acids and / or their salts as a mold release agent for shaped objects based on a hydraulic binder.
- the subject of the invention is also an aqueous composition containing at least one aminoalkylenephosphonic acid in free form and / or in partially or totally neutralized form, useful, if necessary after dilution with an aqueous liquid, for the release of shaped objects from the base a hydraulic binder.
- the release agent does not contribute to fouling of the molds. too strong or too fast. Indeed, the cleaning that the molds should then undergo is a operation, very time and labor consuming, the cost of which would be added to that of interrupting the molding / demolding cycles during the immobilization of the molds in question.
- release agents have been proposed previously, the majority of which are based on whole oils with additives or solvents, or on emulsions of the oil in water or water in oil type.
- the film covering the mold is only rarely continuous and since it generally does not adhere sufficiently to the mold, it is entrained during the pouring of the paste or the concrete.
- an aqueous release composition containing an aliphatic monoalcohol, saturated or unsaturated, the carbon chain of which contains from 10 to 20 carbon atoms, and a salt, neutral or basic, water-soluble, originating from an alkyl (di- or) polyalkyleneamine. (cf. Derwent summary of British Patent No. 1,294,038).
- the highly viscous composition is apparently not sprayable.
- agents could be easily produced and be stable on storage. It would also be advantageous if the aqueous compositions containing them could be sprayed and if the agents in question remained affordable from an economic point of view.
- the present invention therefore relates to the use of at least one aminoalkylenephosphonic acid in free form or in partially or totally neutralized form as a mold release agent for shaped objects based on a hydraulic binder.
- the subject of the invention is also an aqueous composition containing at least one aminoalkylene phosphonic acid in free form or in partially or completely neutralized form, useful, if necessary after dilution with an aqueous liquid, for the release of shaped objects based on a hydraulic binder.
- an alkyl or alkenyl group linear, branched or cyclic, which contains a maximum of 36 carbon atoms and which can carry one or more substituents which do not interfere with said use;
- - Q m can represent a mixed oxyethylene / oxypropylene block or
- - m is an integer between 0 and 20 inclusive and - Q represents a group - CH 2 - CH 2 - O -, - C (CH 3 ) H- CH 2 -O- or a group corresponding to formula (II):
- R 3 is a hydrogen atom, an alkyl radical which contains at most 12 carbon atoms and which may contain one or more substituents which do not interfere with said use, or a group of formula (III) given above;
- * p is an integer between 1 and 12 inclusive;
- - X and Y identical or different, represent a hydrogen atom or an alkyl group which contains at most 4 carbon atoms;
- - n is an integer between 1 and 4 inclusive;
- - M represents a hydrogen atom, an alkali metal, the ammonium group, an ammonium group derived from an amine or an aminoalcohol, or any combination thereof;
- salt or salts in question can correspond to a partial or total neutralization of the acid (s).
- n 1 or 2.
- n is 1 and, more particularly those for which X and Y are identical and represent a hydrogen atom .
- These products can be prepared in a manner known per se by reaction of at least one primary or secondary amine, with formalin and phosphorous acid.
- the starting amine can in practice be a mixture of amines.
- this radical is chosen from alkyl or alkenyl groups, linear or branched, and which can carry one or more substituents which do not interfere with the use in question.
- this radical which contains at most 36 carbon atoms, contains at least 8. Good results are obtained when this radical contains from 14 to 22 carbon atoms
- the radicals (R 1 to R 3 ) can carry one or more substituents which do not interfere with the use in question. Those skilled in the art will therefore avoid the presence of substituents such as halogens; on the other hand, he may choose one or more amines carrying one or more ketone, alcohol or ether functions, for example.
- the starting amine (or mixture of amines) can of course be (or comprise) one (or more) polyamine (s).
- amines or polyamines which may be suitable for the preparation of release agents according to the present invention, there may be mentioned: saturated C12-C22 monoamines, oleylamine, fatty diamines and fatty polyamines.
- the amine (or mixture of amines) used contains a long alkyl or alkenyl chain containing at least 12 carbon atoms
- the proportion of alcohol or dioxane used is not critical and depends above all on the desired fluidity. Most often, it represents of the order of 5 to 40% by weight of the amine or of the starting mixture of amines.
- Use is preferably made of a linear or branched alcohol which contains from 1 to 6 carbon atoms.
- salts it is then necessary to carry out a partial or total neutralization of the acids thus formed, in a manner known per se, for example by addition of an alkali hydroxide, of ammonia, of a light amine (such as ethylamine or dimethylamine) or an amino alcohol (for example, monoethanolamine, di- or triethanolamine).
- an alkali hydroxide of ammonia
- a light amine such as ethylamine or dimethylamine
- amino alcohol for example, monoethanolamine, di- or triethanolamine
- reaction in question can be represented diagrammatically as follows, starting from a primary amine to produce the amino acid di (methylenephosphonic) corresponding:
- the reaction requires the presence of H + ions.
- H + ions can be provided, for example, by hydrochloric acid, sulfuric acid or their mixtures.
- reaction in question can be represented as follows, starting from a mixture of primary amine (s) and secondary amine (s):
- the starting amines comprises several primary or secondary amine functions
- a first particularly advantageous class of compounds which can be used in the context of the present invention corresponds to formula (I) above, in which:
- R 3 is a hydrogen atom, an alkyl radical which contains at most 4 carbon atoms or a group of formula (III),
- * p is an integer between 1 and 12 inclusive when m is 1 and preferably between l and 6 inclusive when m is greater than 1.
- R 3 is a hydrogen atom or a group of formula (III), p is 2 or 3 inclusive and m is equal to 3.
- a second particularly advantageous class of compounds which can be used in the context of the present invention corresponds to the formula (I) above, in which R 2 represents a group of formula (III)
- X, Y, n and M have the meaning given above; preferably, X and Y represent hydrogen and n is 1.
- aminoalkylenephosphonic acids in question and their salts can be used in the context of the present invention, it is preferred to use salts which correspond to partial or total neutralization of said acids. Indeed, these salts and, more particularly the alkaline or ammonium salts containing at most 6 carbon atoms, are easily dispersible, or even soluble, in water.
- demineralized water standard quality water
- sequestering agent such as EDTA
- the crude product of the reaction is used, the scheme of which has just been exposed, after neutralization and dilution with water.
- This product is in most cases in the form of a clear and transparent liquid.
- aminoalkylenephosphonic acid and / or its salts represent at most 25%, and advantageously, at most 10% by weight of the aqueous dispersion.
- nonionic surfactants which may be suitable for the preparation of the compositions in question, mention may be made of ethoxylated fatty alcohols, the alcohol residue of which contains at least 12 carbon atoms and ethoxylated alkylphenols (such as octylphenol and nonylphenol) containing 3 to 15 moles of ethylene oxide.
- the amount of surfactant (s) does not exceed 25%, and preferably 10% by weight of the dispersion or solution.
- aqueous dispersions or solutions according to the invention if necessary containing one (or more) surfactant (s), in the concentrated state, then to dilute them by adding the proportion required water or a liquid mixture containing water, for example, to the required degree before use.
- mold release agents make it possible in certain cases to reduce the dusting commonly observed during the demolding of parboiled concretes, both on the parts and on the molds; we also observe in this case, during demolding, the presence of a thin film of water between the part and the mold, which contributes to giving the mold release a good quality.
- An aqueous dispersion or solution can be free of organic solvent, which avoids the risks of flammability and toxicity associated with emulsions.
- Such a dispersion or solution is also completely reversible to the gel and very easily sprayable, its viscosity depending little on the temperature.
- compositions according to the present invention are only sensitive to a limited number of external elements and they are stable on storage.
- the compounds do not result in deactivation of the concrete even when they are in light overdose.
- the application dose more particularly recommended is 1 to 3 liters of dispersion or aqueous solution per 100 m 2 .
- dispersions or solutions can be applied by any suitable means such as spraying, application with a brush or a cloth, etc.
- the amine or mixtures of amines, phosphorous acid (PA), hydrochloric or sulfuric acid and, if appropriate, water or an alcohol are mixed cold.
- the mixture is then cooled to 80-90 ° C then diluted and, if necessary neutralized.
- NAPDA N- Alkylpropylenediamine of formula
- R is an oleyl group
- reaction products were characterized (NMR of phosphorus) which makes it possible to confirm that they contain at least 80% (molar) of compounds represented by formula (I).
- the neutralization of the acid product was carried out with 50% sodium hydroxide in water, at the pH indicated.
- the surfactant used is an ethoxylated octylphenol containing 6-7 moles of ethylene oxide sold under the name TRITON X114.
- the surfactant used is a C12 alcohol, ethoxyl:
- composition 20 the surfactant used (d) is LAUXANAL 10, polyglycolic ether of fatty alcohol, sold by the company WITCO.
- Example 27 relates to a composition containing 10% by weight of the product B above, in acid form, 10% by weight of TRITON X114 and 80% by weight of demineralized water.
- This mixture looks like milk; the quality of the release is very good.
- Example 28 relates to a composition resulting from the mixture of 100 parts by weight of the preceding composition with 20 parts of isopropanol. This mixture is cloudy but stable; the quality of the release is very good.
- Example 29 relates to an emulsion, the oily element of which is volatile and which is prepared cold by simple stirring of (in parts by weight):
- PEROLENE NT anionic surfactant based on ammonium alkylbenzenesulfonate, sold by the company SEPPIC.
- Example 30 relates to an emulsion in which the oily element is not volatile and which is prepared at 65 ° C. by simple agitation of (in parts by weight):
- Example 31 relates to a composition formulated with an anionic surfactant from product B neutralized with sodium hydroxide and containing 10% by weight of said neutralized product, 10% by weight of PEROLENE NT (company SEPPIC), the complement to 100 being constituted by demineralized water.
- Example 32 relates to a composition containing 10% by weight of product K neutralized by soda, 10% of TRITON X114, the addition to 100 being demineralized water.
- the mold release solution was sprayed onto a metal mold 7 ⁇ 30 ⁇ 100 cm in size and dried for about an hour. We then poured into the mold concrete with the following composition: for 1 m3 of concrete:
- the concrete is then vibrated and baked for 7 hours at 75 ° C.
- a first release is then carried out easily; the mold is reusable without cleaning and the operation can be repeated a number of times.
- C18 : denotes an oleylamine residue, this amine coming from the company ALDRICH;
- C8 denotes an n-octyl residue
- C8 indicates the presence of two n-octyl residues;
- C22 denotes a technical grade beherylamine residue from the company CECA;
- C12 denotes an n-dodecyl residue
- C14 denotes an n-tetradecy residue.
- PNM refers to the polyamine marketed under the name POLYNORAM by the company CECA.
- Example 8 does not fall within the scope of the present invention; we observe that the concrete takes badly, that it is delayed, even deactivated.
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Lubricants (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SK3-96A SK396A3 (en) | 1993-07-02 | 1994-06-15 | Use of aminoalkylenephosphonic acids and/or their salts as release agent for hydraulic based moulded objects |
JP7503306A JPH09507173A (ja) | 1993-07-02 | 1994-06-15 | 水硬性結合剤系の成型物の離型剤としてのアミノアルキレンホスホン酸および/またはその塩の使用 |
EP94919715A EP0706444A1 (fr) | 1993-07-02 | 1994-06-15 | Utilisation d'acides aminoalkylenephosphoniques et/ou de leurs sels comme agent de demoulage d'objets conformes a base d'un liant hydraulique |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR93/08438 | 1993-07-02 | ||
FR9308438A FR2707995B1 (fr) | 1993-07-02 | 1993-07-02 | Utilisation d'acides aminoalkylènephosphoniques et/ou de leurs sels comme agent de démoulage d'objets conformes à base d'un liant hydraulique. |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1995001247A1 true WO1995001247A1 (fr) | 1995-01-12 |
Family
ID=9449086
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR1994/000718 WO1995001247A1 (fr) | 1993-07-02 | 1994-06-15 | Utilisation d'acides aminoalkylenephosphoniques et/ou de leurs sels comme agent de demoulage d'objets conformes a base d'un liant hydraulique |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP0706444A1 (fr) |
JP (1) | JPH09507173A (fr) |
CA (1) | CA2166103A1 (fr) |
CZ (1) | CZ350695A3 (fr) |
FR (1) | FR2707995B1 (fr) |
SK (1) | SK396A3 (fr) |
WO (1) | WO1995001247A1 (fr) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2324713A1 (fr) * | 1975-09-18 | 1977-04-15 | Daikin Ind Ltd | Agent de demoulage |
BE851521R (nl) * | 1977-02-17 | 1977-06-16 | Oosterlynck Andre L D | Procede de demoulage de beton |
EP0166798A1 (fr) * | 1983-04-28 | 1986-01-08 | The Dow Chemical Company | Réducteurs de prise comme ajouts à ciment à partir des dérivés de l'acide aminométhylènephosphorique |
FR2596754A1 (fr) * | 1986-04-02 | 1987-10-09 | Protex Manuf Prod Chimiq | Additifs retardant le durcissement du platre et de compositions a base de platre et platre et compositions a base de platre les contenant |
-
1993
- 1993-07-02 FR FR9308438A patent/FR2707995B1/fr not_active Expired - Fee Related
-
1994
- 1994-06-15 EP EP94919715A patent/EP0706444A1/fr not_active Withdrawn
- 1994-06-15 SK SK3-96A patent/SK396A3/sk unknown
- 1994-06-15 CZ CZ953506A patent/CZ350695A3/cs unknown
- 1994-06-15 JP JP7503306A patent/JPH09507173A/ja active Pending
- 1994-06-15 CA CA 2166103 patent/CA2166103A1/fr not_active Abandoned
- 1994-06-15 WO PCT/FR1994/000718 patent/WO1995001247A1/fr not_active Application Discontinuation
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2324713A1 (fr) * | 1975-09-18 | 1977-04-15 | Daikin Ind Ltd | Agent de demoulage |
BE851521R (nl) * | 1977-02-17 | 1977-06-16 | Oosterlynck Andre L D | Procede de demoulage de beton |
EP0166798A1 (fr) * | 1983-04-28 | 1986-01-08 | The Dow Chemical Company | Réducteurs de prise comme ajouts à ciment à partir des dérivés de l'acide aminométhylènephosphorique |
FR2596754A1 (fr) * | 1986-04-02 | 1987-10-09 | Protex Manuf Prod Chimiq | Additifs retardant le durcissement du platre et de compositions a base de platre et platre et compositions a base de platre les contenant |
Non-Patent Citations (1)
Title |
---|
CHEMICAL ABSTRACTS, vol. 89, no. 24, 11 December 1978, Columbus, Ohio, US; abstract no. 203016v, Y. OKADA page 335; * |
Also Published As
Publication number | Publication date |
---|---|
JPH09507173A (ja) | 1997-07-22 |
EP0706444A1 (fr) | 1996-04-17 |
SK396A3 (en) | 1996-10-02 |
CA2166103A1 (fr) | 1995-01-12 |
FR2707995B1 (fr) | 1995-10-13 |
FR2707995A1 (fr) | 1995-01-27 |
CZ350695A3 (en) | 1996-05-15 |
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