EP2274252A1 - Abbindeverzögerer für hydraulisch abbindende zusammensetzungen - Google Patents
Abbindeverzögerer für hydraulisch abbindende zusammensetzungenInfo
- Publication number
- EP2274252A1 EP2274252A1 EP09731040A EP09731040A EP2274252A1 EP 2274252 A1 EP2274252 A1 EP 2274252A1 EP 09731040 A EP09731040 A EP 09731040A EP 09731040 A EP09731040 A EP 09731040A EP 2274252 A1 EP2274252 A1 EP 2274252A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- acid
- carboxylic acid
- gypsum
- amino acid
- group
- 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- Withdrawn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
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- FFBHFFJDDLITSX-UHFFFAOYSA-N benzyl N-[2-hydroxy-4-(3-oxomorpholin-4-yl)phenyl]carbamate Chemical compound OC1=C(NC(=O)OCC2=CC=CC=C2)C=CC(=C1)N1CCOCC1=O FFBHFFJDDLITSX-UHFFFAOYSA-N 0.000 description 1
- WQZGKKKJIJFFOK-VFUOTHLCSA-N beta-D-glucose Chemical compound OC[C@H]1O[C@@H](O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-VFUOTHLCSA-N 0.000 description 1
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 description 1
- 239000004327 boric acid Substances 0.000 description 1
- 150000001642 boronic acid derivatives Chemical class 0.000 description 1
- 159000000007 calcium salts Chemical class 0.000 description 1
- 150000001735 carboxylic acids Chemical class 0.000 description 1
- 239000005018 casein Substances 0.000 description 1
- BECPQYXYKAMYBN-UHFFFAOYSA-N casein, tech. Chemical compound NCCCCC(C(O)=O)N=C(O)C(CC(O)=O)N=C(O)C(CCC(O)=N)N=C(O)C(CC(C)C)N=C(O)C(CCC(O)=O)N=C(O)C(CC(O)=O)N=C(O)C(CCC(O)=O)N=C(O)C(C(C)O)N=C(O)C(CCC(O)=N)N=C(O)C(CCC(O)=N)N=C(O)C(CCC(O)=N)N=C(O)C(CCC(O)=O)N=C(O)C(CCC(O)=O)N=C(O)C(COP(O)(O)=O)N=C(O)C(CCC(O)=N)N=C(O)C(N)CC1=CC=CC=C1 BECPQYXYKAMYBN-UHFFFAOYSA-N 0.000 description 1
- 235000021240 caseins Nutrition 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 229920003086 cellulose ether Polymers 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 239000002738 chelating agent Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000008139 complexing agent Substances 0.000 description 1
- 239000007859 condensation product Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- NONFLFDSOSZQHR-CQOLUAMGSA-N d4-trimethyl silyl propionic acid Chemical compound OC(=O)C([2H])([2H])C([2H])([2H])[Si](C)(C)C NONFLFDSOSZQHR-CQOLUAMGSA-N 0.000 description 1
- 238000007872 degassing Methods 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 235000019425 dextrin Nutrition 0.000 description 1
- 150000001991 dicarboxylic acids Chemical class 0.000 description 1
- 239000000539 dimer Substances 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 230000007515 enzymatic degradation Effects 0.000 description 1
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 235000013312 flour Nutrition 0.000 description 1
- 150000002222 fluorine compounds Chemical class 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 235000019253 formic acid Nutrition 0.000 description 1
- 229940074391 gallic acid Drugs 0.000 description 1
- 235000004515 gallic acid Nutrition 0.000 description 1
- 239000008273 gelatin Substances 0.000 description 1
- 229920000159 gelatin Polymers 0.000 description 1
- 235000019322 gelatine Nutrition 0.000 description 1
- 235000011852 gelatine desserts Nutrition 0.000 description 1
- 239000000174 gluconic acid Substances 0.000 description 1
- 235000012208 gluconic acid Nutrition 0.000 description 1
- 239000008103 glucose Substances 0.000 description 1
- 239000004572 hydraulic lime Substances 0.000 description 1
- 150000002484 inorganic compounds Chemical class 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 229910000464 lead oxide Inorganic materials 0.000 description 1
- 239000006028 limestone Substances 0.000 description 1
- 238000004949 mass spectrometry Methods 0.000 description 1
- 235000013336 milk Nutrition 0.000 description 1
- 239000008267 milk Substances 0.000 description 1
- 210000004080 milk Anatomy 0.000 description 1
- YEXPOXQUZXUXJW-UHFFFAOYSA-N oxolead Chemical compound [Pb]=O YEXPOXQUZXUXJW-UHFFFAOYSA-N 0.000 description 1
- 239000010451 perlite Substances 0.000 description 1
- 235000019362 perlite Nutrition 0.000 description 1
- 150000003009 phosphonic acids Chemical class 0.000 description 1
- 229920000058 polyacrylate Polymers 0.000 description 1
- 108010064470 polyaspartate Proteins 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 235000019422 polyvinyl alcohol Nutrition 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 235000018102 proteins Nutrition 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 102000004169 proteins and genes Human genes 0.000 description 1
- 238000000425 proton nuclear magnetic resonance spectrum Methods 0.000 description 1
- 239000003340 retarding agent Substances 0.000 description 1
- 238000000518 rheometry Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000007127 saponification reaction Methods 0.000 description 1
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 159000000000 sodium salts Chemical class 0.000 description 1
- RPACBEVZENYWOL-XFULWGLBSA-M sodium;(2r)-2-[6-(4-chlorophenoxy)hexyl]oxirane-2-carboxylate Chemical compound [Na+].C=1C=C(Cl)C=CC=1OCCCCCC[C@]1(C(=O)[O-])CO1 RPACBEVZENYWOL-XFULWGLBSA-M 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 125000002730 succinyl group Chemical group C(CCC(=O)*)(=O)* 0.000 description 1
- 239000005720 sucrose Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- 150000007970 thio esters Chemical group 0.000 description 1
- 125000003396 thiol group Chemical group [H]S* 0.000 description 1
- 229920003169 water-soluble polymer Polymers 0.000 description 1
- XLOMVQKBTHCTTD-UHFFFAOYSA-N zinc oxide Inorganic materials [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
- C04B40/0039—Premixtures of ingredients
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/20—Retarders
- C04B2103/22—Set retarders
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/20—Retarders
- C04B2103/24—Hardening retarders
Definitions
- the present invention relates to a setting retarder for hydraulically setting compositions, a process for its preparation and uses of the setting retarder.
- the setting retarder according to the invention is distinguished by an excellent retarding action in a large number of hydraulically setting compositions.
- Burnt plaster or stucco is used either alone or mixed with lime
- Sand and lightweight aggregates such as perlite or cellulose derivatives used on a larger scale.
- the setting time of the gypsum compounds after mixing with water is relatively short, so that rapid processing must be carried out. An overview of this can be found, for example, by Ruffer in Keram. Ztg. 39 (1), 13-15 (1987).
- retarders e.g. Retardane (polymer), phosphates, phosphonates, phosphonic acids, fruit acids (e.g., malic, tartaric, citric), chelating agents, gelatin, protein hydrolysates, and the like. available.
- DE-OS 23 25 738 proposes adding gypsum compositions to water-soluble polymers based on unsaturated dicarboxylic acids.
- DE-PS 75 21 94 BASF
- BASF basic condensation products of aliphatic amino acids with formaldehyde.
- similar substances is further also of Müller in Zem. K. Gips 27 (2), 69-74 (1974).
- the fabrics are not only insufficient in retardation properties, but also dark colored and have a pungent odor, which, taken together, severely restricts their use for their intended purpose.
- the substances suitable for retarding were already described in the literature in the thirties and forties and have been described by various authors (Kruis and boss, Benz, Harvey and Neville (see Kunze, RA, Thayer, AG; Gypsum and Plaster; Cem. Res. 196, pp. 267-283)
- the processing period of a gypsum extends between stiffening start (VB) and stiffening end (VE).
- the setting course can be determined with the help of the released heat of hydration (although indirect and not see Hans-Bertram Fischer, Martin Werner: Hydration behavior of gypsum mixtures, stucco, plaster, drywall, 9194 pp. 16-22), as well as according to the Vicat method, DIN 1168 part 2 or with the help of ultrasonic measurements, in Con. Chem - Journal, 4 year 3196.
- Suitable retarders therefore push the stiffening beginning or increase the time difference between VE and VB.
- Such retarders are for example loidsentner (cellulose ethers, casein, dextrin) or amphorous inorganic compounds (zinc and lead oxide) and especially complexing agents for calcium or those which form sparingly soluble compounds with calcium, for example phosphates, phosphonates, silicone fluorides, boric acid, borates .
- the tartaric acid plasters typically exhibit a flat setting curve and a large difference between VE-VB, which very much accommodates the needs of the user.
- a disadvantage is the low delay effect with respect to VB compared to polymeric electrolytes.
- An obvious tartaric acid substitute - the citric acid - often results in tinting disorders and resulting complaints during machine-appropriate application.
- DE 199 14 367 discloses a water-resistant hydraulically setting composition which contains amidobetaines, ether carboxylic acids and alkylbetaines as auxiliaries.
- a so-called hydraulically setting composition on page 4 Z. 55 ff. Also called gypsum in the form of hemihydrate and anhydrite.
- JP 08 169 741 A discloses the use of polysuccinimide in cement; Again, however, an optimal time difference between VB-VE is not given.
- WO 92/16463 A1 discloses a method of preventing the precipitation of calcium sulfate in aqueous systems using polyaspartic acid. Although the use of polymeric repeating succinyl units for the retardation of calcium sulfate beta hemihydrate or its preparations is possible in principle, a very short processing interval results here.
- a setting retarder for hydraulically setting compositions comprising at least one at least simple adduct and / or condensate, preparable by reaction of at least one protein hydrolyzate, a pure amino acid, amino acid mixtures and / or their hydrochlorides with at least one mono-, di-, and oligo- and or polycarboxylic acid which is not derived from an amino acid and / or derived carboxylic acid derivatives, wherein the carboxylic acid derivative is selected from the group consisting of carboxylic anhydrides, carboxylic acid halides and / or carboxylic active esters.
- the setting retarder thus contains a previously mentioned adduct as pure substance or else mixtures of several adducts.
- Simple adducts may be, for example, the reaction product of an amino acid having an NH 2 functionality with 1 equivalent of an acid or a derivative as defined above to form an amide bond.
- the corresponding reaction of a protein hydrolyzate with one equivalent of an acid or derivatives thereof is to be understood.
- Multiple adducts ie at least two-, three- to four-fold, etc.
- adducts arise when either an amino acid or a protein hydrolyzate with 2 or more nucleophilic functionalities, such as amino, hydroxy and / or thiol groups, is used and / or a polyvalent carboxylic acid, ie a di-, tri-, oligo-carboxylic acid, etc. is used.
- the adducts and / or condensates can be present in the setting retarder according to the invention as pure substances or as a mixture.
- Mixtures are to be understood as meaning that adducts of different substances (for example different amino acids and / or carboxylic acids) and / or mono- and polyfunctional adducts of the same substances may be present in a mixture with one another.
- Protein hydrolyzates which can be used are, for example, hydrolysates prepared by enzymatic degradation of protein, but also chemically produced protein hydrolysates, for example protein hydrolysates prepared by saponification. It is preferred if the at least one amino acid is selected from the group consisting of alanine, arginine, asparagine, aspartic acid, cysteine, glutamine, glutamic acid, glycine, histidine, isoleucine, leucine, lysine, methionine, phenylalanine, proline, serine, threonine,
- the mono-, di-, oligo- and / or polycarboxylic acid and / or the carboxylic acid derivative is selected from the group consisting of oxalic acid, acetic acid, propionic acid, 1,3-propionic acid, butanoic acid, succinic acid, maleic acid , Fumaric acid,
- Phthalic acid, pyromellitic acid, malic acid, tartaric acid, citric acid and / or their acid halides, acid anhydrides and / or active esters of said compounds, in particular succinic anhydride is preferred here.
- the adduct and / or condensate which is contained in the setting agent is characterized by the general formula I:
- R 1 is hydrogen or a linear or branched C 1 -C 2 -alkyl radical
- Y is NR 1 , S or O, where R 1 has the meaning given above, as well as
- the compound according to formula I thus represents e.g. is a double adduct of an amino acid having two amino functionalities and two equivalents of a carboxylic acid having two acid functionalities or an internal carboxylic acid anhydride.
- the setting retarder is present as a mixture of the above-described double adduct of formula I with at least one simple adduct according to a formula of the formulas III and / or IV: HY- (R 3 ) C - (CHR 1 ) a - (CHR 2 ) b -YZ
- the simple adducts and / or condensates according to formulas III and IV thus constitute a reaction product, e.g. an amino acid having two amino functionalities with one equivalent of a carboxylic acid having two carboxylic acid functionalities and / or an internal carboxylic acid anhydride.
- the setting retarder may be in aqueous solution or in dry powder form.
- Preferred concentration ranges of the aqueous solution of the setting retarder are between 15 and 50% by weight, preferably between 15 and 40% by weight, more preferably between 30 and 40% by weight.
- Advantageous pH values of the aqueous solution of the setting retarder are between 2 and 13, preferably between 4 and 10, particularly preferably between 6 and 8.
- the setting retarder can select at least one additive from the group consisting of rheology auxiliaries, solvents, defoamers, accelerators, fillers, driers, dyes, preservatives, rust inhibitors, water repellents or pigments, or a mixture of two or more additives selected therefrom.
- the proportion by weight of the at least one additive based on 100 wt .-% setting retarder between 0.1 and 30 wt .-%, preferably between 0.3 and 10 wt .-%.
- reaction mixture at least one alkali, preferably sodium hydroxide, potassium hydroxide, Lime milk, slaked lime and / or quicklime before, during and / or after mixing the components a) and b) is added.
- alkali preferably sodium hydroxide, potassium hydroxide, Lime milk, slaked lime and / or quicklime before, during and / or after mixing the components a) and b) is added.
- the two educts a) and b) are used in an equivalence ratio of between 1:10 and 10: 1, preferably between 1: 3 and 3: 1, the equivalence of the educt a) to free -NH 2 - Groups and the equivalence of the educt b) is based on free or derivatized carboxylic acid functionalities.
- the product obtained can preferably be salted out by adding at least one alkali, preferably an alkali selected from the group consisting of calcium hydroxide, calcium oxide, potassium hydroxide and / or sodium hydroxide.
- the setting retarder is thus prepared in aqueous solution. After completion of the reaction, the resulting aqueous solution of the setting retarder can thus be used directly.
- drying of the reaction mixture preferably spray drying, is carried out after completion of the reaction, the setting retarder thus being obtained either as a concentrated aqueous solution, as a paste or as a dry powder.
- At least one spraying aid preferably selected from the group consisting of limestone flour, lignosulfonate, talc, silicic acid, polyacrylates and / or polyvinyl alcohols, is added before and / or during the spray drying. set zt becomes.
- the setting retarder is useful for retarding the setting of a hydraulically setting composition wherein the retarder is added before, during and / or after the setting of the hydraulic setting composition.
- the hydraulically setting composition contains at least one inorganic substance which hardens after mixing with water of hydration after a certain period of time.
- the inorganic substance is selected from the group consisting of cement, hydraulic lime, gypsum, gypsum plasters, spatula, mortar, screeds and / or mixtures thereof.
- 100% by weight of the hydraulically setting composition is from 0.001 to 0.5% by weight, preferably from 0.001 to 0.1% by weight, of the setting retarder (based on the dry matter of the setting retainer) be added.
- the pH of the end product is 2 to 13, preferably 4 to 10, particularly preferably 6 to 8 (neutralized with alkali)
- the pH of the end product is 2 to 13, preferably 4 to 10, particularly preferably 6 to 8 (neutralized with alkali)
- the pH of the end product is 2 to 13, preferably 4 to 10, particularly preferably 6 to 8 (neutralized with alkali)
- the pH of the end product is 2 to 13, preferably 4 to 10, particularly preferably 6 to 8 (neutralized with alkali)
- a set retarder (Sample 3) was prepared by reacting lysine (Sample 1) with succinic anhydride (BSA) (Sample 2).
- sample 3 under investigation is a chemical reaction product of lysine (50% by weight aqueous solution) and succinic anhydride (flakes), which was characterized as Sample 1 and Sample 2, respectively.
- Sample 3 was prepared by reacting an aqueous, neutralized with sodium hydroxide solution
- the NMR parameters used are recorded on each spectrum.
- Fig. 1 The reaction scheme of the reaction of lysine with BSA with possible reaction products in the reaction
- FIG. 2 the NMR spectrum of sample 1 (lysine)
- FIG. 3 the NMR spectrum of sample 2 (BSA)
- FIG. 4 the NMR spectrum of the reaction product (sample 3).
- Scan parameters 50-1100 amu in 2.9 sec.
- Capillary applied voltage 4 kV
- Source voltage + 50 / -10 V
- Sample temperature 300 0 C
- Fig. 5 A mass spectrum of sample 1 (lysine) with associated assignment of the peaks (Table 1), and
- Fig. 6 a mass spectrum of the reaction product (sample
- Mi m / z 246: lysine + Ix succinic anhydride
- M 2 m / z 346: lysine + 2x succinic anhydride
- M 3 m / z 118: succinic acid
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
Description
Claims
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP09731040A EP2274252A1 (de) | 2008-04-10 | 2009-04-09 | Abbindeverzögerer für hydraulisch abbindende zusammensetzungen |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP08007106A EP2108628A1 (de) | 2008-04-10 | 2008-04-10 | Abbindeverzögerer für hydraulisch abbindende Zusammensetzungen |
| EP09731040A EP2274252A1 (de) | 2008-04-10 | 2009-04-09 | Abbindeverzögerer für hydraulisch abbindende zusammensetzungen |
| PCT/EP2009/054284 WO2009124993A1 (de) | 2008-04-10 | 2009-04-09 | Abbindeverzögerer für hydraulisch abbindende zusammensetzungen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP2274252A1 true EP2274252A1 (de) | 2011-01-19 |
Family
ID=39675266
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP08007106A Withdrawn EP2108628A1 (de) | 2008-04-10 | 2008-04-10 | Abbindeverzögerer für hydraulisch abbindende Zusammensetzungen |
| EP09731040A Withdrawn EP2274252A1 (de) | 2008-04-10 | 2009-04-09 | Abbindeverzögerer für hydraulisch abbindende zusammensetzungen |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP08007106A Withdrawn EP2108628A1 (de) | 2008-04-10 | 2008-04-10 | Abbindeverzögerer für hydraulisch abbindende Zusammensetzungen |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US8444764B2 (de) |
| EP (2) | EP2108628A1 (de) |
| JP (1) | JP2011516387A (de) |
| CN (1) | CN101990525A (de) |
| AU (1) | AU2009235437A1 (de) |
| CA (1) | CA2719866A1 (de) |
| RU (1) | RU2010145550A (de) |
| WO (1) | WO2009124993A1 (de) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112174566A (zh) * | 2020-09-29 | 2021-01-05 | 江苏尼高科技有限公司 | 一种粉体改性蛋白石膏缓凝剂的制备方法 |
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| US20040103325A1 (en) * | 2002-11-27 | 2004-05-27 | Priebatsch Mark Herbert | Authenticated remote PIN unblock |
| EP2497757A1 (de) * | 2011-03-11 | 2012-09-12 | Sika Technology AG | Abbindeverzögerer für hydratbildende Bindemittel |
| CN102701638B (zh) * | 2012-06-01 | 2013-08-14 | 河北科技大学 | 一种石膏缓凝剂及其制备方法 |
| EP2671854A1 (de) | 2012-06-06 | 2013-12-11 | Etex Dryco SAS | Verfahren zur Stabilisierung von Beta-Halbhydrat-Gips |
| ES2392062B2 (es) * | 2012-09-10 | 2013-04-16 | Universidad Miguel Hernández De Elche | Aditivo seco para yesos y procedimiento para su preparación |
| CN103588409B (zh) * | 2013-11-06 | 2016-04-06 | 上海宇培特种建材有限公司 | 脱硫建筑石膏缓凝剂及其制备方法 |
| EP2876094A1 (de) | 2014-04-03 | 2015-05-27 | Basf Se | Zement- und Calciumsulfat-basierte Bindemittelzusammensetzung |
| WO2017087326A1 (en) | 2015-11-16 | 2017-05-26 | Gcp Applied Technologies Inc. | Postponed onset of quicklime hydration |
| EP3533969A1 (de) * | 2018-03-01 | 2019-09-04 | ETH Zürich | Zusatzmittel zur verhinderung des quellens von anhydrithaltigem gesteinsmaterial |
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| CN114180877B (zh) * | 2022-02-17 | 2022-05-20 | 河北科技大学 | 一种耐碱型石膏缓凝剂及其制备方法 |
| CN114702260A (zh) * | 2022-04-07 | 2022-07-05 | 苏州市兴邦化学建材有限公司 | 一种轻质石膏用缓凝剂及其制备方法 |
| CN114656186A (zh) * | 2022-04-08 | 2022-06-24 | 苏州市兴邦化学建材有限公司 | 一种改性氨基酸类石膏缓凝剂及其制备方法 |
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| JP2001130936A (ja) * | 1999-10-28 | 2001-05-15 | Ajinomoto Co Inc | 石膏の凝結硬化遅延剤 |
| JP2001261395A (ja) * | 2000-03-16 | 2001-09-26 | Ajinomoto Co Inc | 石膏の凝結硬化遅延剤 |
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| JPH08169741A (ja) | 1994-12-16 | 1996-07-02 | Mitsui Toatsu Chem Inc | 徐放性セメント用混和剤 |
| US5527959A (en) * | 1995-01-23 | 1996-06-18 | Board Of Trustees Operating Michigan State University | Crystalline composition of lysine and succinic acid or alkali metal salt thereof |
| DE19534847A1 (de) * | 1995-09-20 | 1997-03-27 | Basf Ag | Verwendung von Polycarbonsäurehalbamiden als Zusatz zu Wasch- und Reinigungsmitteln |
| DE19740787A1 (de) | 1997-09-17 | 1999-03-18 | Bayer Ag | Verfahren zur Verbesserung der Plastizität von keramischen Massen und Umkehr dieser Wirkung |
| US6190451B1 (en) * | 1997-12-08 | 2001-02-20 | Showa Denko Kabushiki Kaisha | Admixture of cement composition |
| DE19914367A1 (de) | 1998-04-17 | 1999-10-21 | Henkel Kgaa | Wasserbeständige hydraulisch abbindende Zusammensetzungen |
| JP2000103659A (ja) * | 1998-07-31 | 2000-04-11 | Nippon Shokubai Co Ltd | セメント添加剤 |
| US6221967B1 (en) * | 1999-12-16 | 2001-04-24 | Shell Oil Company | Preformed multi-acid adducts useful for grafting polyolefin polymers |
| US7537656B2 (en) * | 2005-06-22 | 2009-05-26 | Halliburton Energy Services, Inc. | Cement compositions comprising biodegradable monomers for retarding the setting thereof |
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2008
- 2008-04-10 EP EP08007106A patent/EP2108628A1/de not_active Withdrawn
-
2009
- 2009-04-09 RU RU2010145550/03A patent/RU2010145550A/ru not_active Application Discontinuation
- 2009-04-09 EP EP09731040A patent/EP2274252A1/de not_active Withdrawn
- 2009-04-09 US US12/934,368 patent/US8444764B2/en not_active Expired - Fee Related
- 2009-04-09 CN CN2009801125783A patent/CN101990525A/zh active Pending
- 2009-04-09 AU AU2009235437A patent/AU2009235437A1/en not_active Abandoned
- 2009-04-09 CA CA2719866A patent/CA2719866A1/en not_active Abandoned
- 2009-04-09 JP JP2011503448A patent/JP2011516387A/ja active Pending
- 2009-04-09 WO PCT/EP2009/054284 patent/WO2009124993A1/de not_active Ceased
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001130936A (ja) * | 1999-10-28 | 2001-05-15 | Ajinomoto Co Inc | 石膏の凝結硬化遅延剤 |
| JP2001261395A (ja) * | 2000-03-16 | 2001-09-26 | Ajinomoto Co Inc | 石膏の凝結硬化遅延剤 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112174566A (zh) * | 2020-09-29 | 2021-01-05 | 江苏尼高科技有限公司 | 一种粉体改性蛋白石膏缓凝剂的制备方法 |
| CN112174566B (zh) * | 2020-09-29 | 2022-05-10 | 江苏尼高科技有限公司 | 一种粉体改性蛋白石膏缓凝剂的制备方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| US8444764B2 (en) | 2013-05-21 |
| AU2009235437A1 (en) | 2009-10-15 |
| RU2010145550A (ru) | 2012-05-20 |
| CA2719866A1 (en) | 2009-10-15 |
| US20110056409A1 (en) | 2011-03-10 |
| EP2108628A1 (de) | 2009-10-14 |
| CN101990525A (zh) | 2011-03-23 |
| WO2009124993A1 (de) | 2009-10-15 |
| JP2011516387A (ja) | 2011-05-26 |
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