Dispersant Comprising Copolymer Mixture

The invention relates to a polymer composition containing 3 to 95% by weight of a copolymer H and 3 to 95% by weight of a copolymer K, the copolymers H and K each having polyether macromonomer structural units and acid monomer structural units, which are present in the copolymers H and K in each case in a molar ratio of 1:20 to 1:1, and at least 20 mol % of all structural units of the copolymer H and at least 25 mol % of all structural units of the copolymer K being present in each case in the form of acid monomer structural units, the polyether macromonomer structural units of the copolymers H and K having side chains containing in each case at least 5 ether oxygen atoms, the number of ether oxygen atoms per side chain of the polyether macromonomer structural units of the copolymers H and K varying in each case in such a way that the corresponding frequency distribution diagrams, in which the number of ether oxygen atoms per side chain of a polyether macromonomer structural unit is plotted in each case along the abscissae and the respectively associated frequencies for the copolymers H or K are plotted in each case along the ordinates, contain in each case at least 2 maxima whose abscissa values differ in each case by more than 7 ether oxygen atoms from one another, the frequency distribution diagrams of the copolymers H and K differing from one another in that the abscissa value of at least one maximum of the copolymer H differs in each case by more than 5 ether oxygen atoms from the abscissa values of all maxima of the copolymer K and/or that the arithmetic means of the ether oxygen atoms of the polyether macromonomer structural units of the copolymers H and K differ from one another by more than 5 ether oxygen atoms.

Dispersing Agent Containing Copolymer Mixture

The invention relates to a polymer composition containing 3 to 90% by weight of a copolymer H and 3 to 90% by weight of a copolymer K, the copolymers H and K each having polyether macromonomer structural units and acid monomer structural units, which are present in the copolymers H and K in each case in a molar ratio of 1:20 to 1:1, and at least 20 mol % of all structural units of the copolymer H and at least 25 mol % of all structural units of the copolymer K being present in each case in the form of acid monomer structural units, at least 60 mol % of the polyether macromonomer structural units of the copolymer H being represented by the isoprenol polyether derivative structural units and at least 60 mol % of the polyether macromonomer structural units of the copolymer K being represented by the vinyloxy polyether derivative structural units.

Cement grinding aid

An aqueous polymer composition is disclosed which is used in the form of a cement grinding aid and makes it possible to effectively reduce the grinding time and to obtain cements exhibiting excellent characteristics. A cement grinding aid containing a combination of polymer A and known grinding aids is also disclosed.

POLYMER COMPRISING A HYDROLYSABLE FUNCTION THAT CAN BE USED AS A THINNER

The invention relates to a polymer comprising the following units: 5. The polymer according to claim 1 , wherein:q represents 0 or 1, and/orp represents 0, 1 or 2, and/orm represents 1, and/orn represents 1, and/orr represents 1.6. The polymer according to claim 1 , wherein Rand Rrepresent independently H claim 1 , a methyl or an ethyl claim 1 , Rand Rpreferably representing H.7. The polymer according to claim 4 , wherein:the ratio i/(i+j+k) is from 0.01 to 0.8, and/orthe ratio j/(i+j+k) is from 0.01 to 0.65, and/orthe ratio k/(i+j+k) is from 0.05 to 0.90.8. The polymer according to claim 1 , comprising from 2 to 10% by mass of a unit of formula (A).9. The polymer according to claim 1 , with a weight molecular mass from 5 claim 1 ,000 to 500 claim 1 ,000 grams/mol.15. Process for improving maintenance of fluidity of hydraulic compositions and inhibiting the formation of cracks in hardened hydraulic compositions claim 1 , which comprises adding an effective amount of the polymer as defined in to said compositions.16. A thinner for hydraulic compositions comprising the polymer as defined in in solution and a solvent claim 1 , especially in an aqueous solution claim 1 , preferably comprising from 5 to 50% by weight of said polymer claim 1 , based on the total weight of the solution.17. A hydraulic composition comprising:{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'a polymer as defined in ,'}a hydraulic binder,a granulate, andwater.18. The hydraulic composition according to claim 17 , wherein the hydraulic composition is concrete claim 17 , mortar or plaster. The present invention relates to a polymer, its preparation method and its uses as a thinner in hydraulic compositions.The hydraulic compositions are compositions comprising a hydraulic binder. A hydraulic binder is a binder which forms and hardens by chemical reaction with water. As hydraulic binders, mention may be made of compositions of plasters, calcium sulfates and aluminates, lime and cement. Mortars ...

ADDITIVE FOR BUILDING PRODUCT MIXTURES CONTAINING FLOW AGENTS

Claimed is a cationic copolymer and also its use as an admixture agent for building product systems, especially based on calcium sulfate. The copolymers of the invention effectuate accelerated setting behavior in clay-containing as well as non-clay-containing gypsums and they enable uncurtailed water reduction performance by dispersant agents used at the same time with the copolymers. The clay fractions in the gypsum system are masked by the cationic copolymer, and so the building product mixture exhibits properties of a building product mixture not containing clay. The copolymers are used as a formulation and also together with retarders. 120.-. (canceled)22. The copolymer according to claim 21 , containing the cationic structural unit (A) in fractions of 20 to 95 mol % and more preferably of 40 to 80 mol % claim 21 , and/or the macromonomeric structural unit (B) in fractions of 10 to 40 mol %.23. The copolymer according to claim 21 , wherein the structural unit (A) is a polymerization product of at least one monomer selected from the group consisting of [2-(acryloyloxy)ethyl]trimethyl ammonium chloride claim 21 , [2-(acryloylamino)ethyl]trimethylammonium chloride claim 21 , [2-(acryloyloxy)ethyl]-trimethylammonium methosulfate claim 21 , [2-(methacryloyloxy)ethyl]trimethylammonium chloride claim 21 , [2-(methacryloyloxy)ethyl]trimethylammonium methosulfate claim 21 , [3-(acryloylamino)propyl]trimethylammonium chloride claim 21 , [3-(methacryloylamino)propyl]-trimethylammonium chloride and diallyldimethylammonium chloride.26. The copolymer according to claim 21 , wherein the structural unit (B) constitutes at least one representative of a monomer species selected from the group consisting of allyl polyethylene glycol monovinyl ether claim 21 , methyl polyethylene glycol monovinyl ether claim 21 , isoprenyl polyethylene glycol claim 21 , polyethylene glycol vinyloxybutyl ether claim 21 , polyethylene glycol-block-propylene glycol vinyloxybutyl ether claim 21 , ...

CEMENT COMPOSITION

Lime-free admixture compositions comprise a combination of emulsifiers, toughening resins/plasticizers, adhesive resins, pumping aids for providing lubrication, rheology controllers, water retention agents, water repellents/overcoat finishes, accelerators, water reducers and air entraining agents. The lime-free admixture compositions are total replacements for lime. The lime-free admixture compositions are non-corrosive, making them safe to use by workers and they have rheological properties that make them suitable for use in various applications including concrete, mortars, grouts and stuccos (renders). 1. A lime-free admixture composition for use in hardening a mixture including the admixture composition with hydraulic cement , a plurality of aggregates and water; the admixture composition being a dry powder , the admixture composition comprising: 'one or more toughening resin, the toughening resin selected from the group consisting of isoprene polymer rubbers, isoprene copolymer rubbers, styrene/butadiene/styrene copolymer rubbers and nitrile copolymer rubbers;', 'one or more emulsifiers, at least one emulsifier comprising a linear alkyl benzene sulfonate salt of an alkali metal cation;'}one or more accelerator comprising a calcium salt of carboxylic acids selected from the group consisting of calcium formate, calcium acetate and calcium oxalate; andone or more retarder comprising a salt of gluconic acids selected from the group of gluconates consisting of magnesium, potassium, sodium and calcium.2. A lime-free admixture composition for use in hardening a mixture including the admixture composition with hydraulic cement , a plurality of aggregates and water; the admixture composition being a dry powder; the admixture composition comprising:one or more emulsifiers, at least one emulsifier comprising dicumyl peroxide;one or more toughening resin, at least one toughening resin selected from the group consisting of isoprene polymer rubbers, isoprene copolymer rubbers ...

PREPARATION METHOD FOR POLYCARBOXYLATE WATER REDUCER HAVING REGULAR SEQUENCE STRUCTURE

Disclosed is a preparation method of a polycarboxylate water reducer having a regular sequence structure. The preparation method of the present invention comprises: performing Michael addition on polyethylene glycol ether acrylate macromonomer A and amino-containing carboxylic acid B for 5-12 hours, then cooling to 0° C., dropwise adding acryloyl chloride slowly and evenly, and further reacting for 12 hours at room temperature to obtain carboxyl-containing polyether macromonomer C; mixing the carboxyl-containing polyether macromonomer C, a small molecular RAFT reagent, an initiator, and water adequately; and holding the polymerization mass concentration at 30%-60% and heating to 60-80° C. in the atmosphere of N2 to react for 2-5 hours to obtain the polycarboxylate water reducer having a regular sequence structure. 2. The method for preparing the polycarboxylate water reducer with a regular sequence structure according to claim 1 , wherein the small molecular RAFT reagent in step (2) is any of S claim 1 ,S′-bis(2-methyl-2-propionic acid) trithiocarbonate (BDMAT) claim 1 , and (4-cyano-4-[(ethylsulfanylthiocarbonyl) sulfanyl]pentane acid (CETPA).3. The method for preparing the polycarboxylate water reducer having a regular sequence structure according to claim 2 , wherein the initiator in step (2) is potassium persulfate claim 2 , ammonium persulfate claim 2 , azobisisobutylamidine hydrochloride (V-50) claim 2 , azobisisobutylimidazoline hydrochloride (VA-044) claim 2 , azobiscyanovaleric acid (V-501) claim 2 , and azodiisopropylimidazoline (VA-061).4. A polycarboxylate water reducer having a regular sequence structure prepared by the preparation method according to claim 1 , wherein the dosage of the polycarboxylate water reducer having a regular sequence structure is 0.1% to 0.5% of the total weight of a gelling material. The present invention relates to a polycarboxylate water reducer having a regular sequence structure and a preparation method thereof, belonging ...

SYNTHESIS AND APPLICATION OF CaSO4-BASED HARDENING ACCELERATORS

The invention concerns a method for producing pulverulent hardening accelerators by reactive spray drying, where an aqueous phase I comprising calcium ions, and an aqueous phase II comprising sulphate ions, the molar ratio of the calcium ions to the sulphate ions being from 1/5 to 5/1, are contacted at a spray nozzle, and the phases I and II contacted with one another at the spray nozzle are sprayed in a streaming environment of drying gas. Likewise concerned are the pulverulent hardening accelerators producible by the method of the invention, and their use for accelerating the hardening of bassanite and/or anhydrite with formation of gypsum. 1. A method for producing a pulverulent CaSO-based hardening accelerator , the method comprising:a) contacting, at a spray nozzle, an aqueous phase I comprising liquid calcium ions and an aqueous phase H comprising liquid sulphate ions, the molar ratio of the calcium ions in phase I to the sulphate ions in phase II being from 1/5 to 5/1, andb) spraying phases I and II from said contacting with one another at the spray nozzle into a streaming environment of drying gas with an entry temperature in the range from 120 to 300° C. and an exit temperature in the range from 60 to 120° C., whereinthe calcium ions react with the sulphate ions and, with removal of water by the carrier gas, the pulverulent hardening accelerator is obtained.2. The method according to claim 1 , wherein the spray nozzle is a multi-channel nozzle.3. The method according to claim 2 , whereinthe multi-channel nozzle comprises at least two channels,the aqueous phase I comprising liquid calcium ions and the aqueous phase II comprising liquid sulphate ions are supplied separately into at least two of the channels, andphases I and II are contacted with one another at an outlet of the channels of the nozzle during said contacting.4. The method according to claim 1 ,wherein phase I comprises an aqueous solution of a calcium salt,wherein phase II comprises an aqueous ...

Calcium sulfate composition comprising an additive

The invention relates to a composition comprising at least 10 wt. % of a binder based on calcium sulfate and 0.005 to 5 wt. % of an additive made of at least one water-soluble salt of a multivalent metal cation, at least one compound which is capable of releasing an anion that forms a poorly soluble salt together with the multivalent metal cation, and at least one polymer dispersant which comprises anionic and/or anionogenic groups and polyether side chains. The invention further relates to a method for producing said composition and to the use thereof as a calcium sulfate flow screed, a flowable calcium sulfate filler compound, or an earth-moist calcium sulfate screed.

POLYCARBOXYLIC ACID WATER-REDUCING AGENT WITH HIGH ADAPTABILITY TO TEMPERATURE AND METHOD FOR PREPARING THE SAME

The present invention discloses a polycarboxylic acid water-reducing agent with high adaptability to temperature and a preparation method for preparing the same. The polycarboxylic acid water-reducing agent is prepared by introducing an unsaturated macromonomer D with a temperature-sensitive side chain which could be bonded to the backbone of the polycarboxylic acid through free radical polymerization. The polycarboxylic acid water-reducing agent prepared by the invention has an adsorption group density that can be automatically adjusted with the change of ambient temperature, and thereby shows similar dispersing capability and dispersion retention capability at different ambient temperatures, demonstrating high adaptability to different ambient temperatures. It can be used in a larger temperature range with a constant dosage, which is beneficial to further popularization and application of the polycarboxylic acid water-reducing agent in regions of different climates. 1. A polycarboxylic acid water-reducing agent with high adaptability to temperature , wherein an unsaturated macromonomer D having a temperature-sensitive side chain is introduced in the polycarboxylic acid water-reducing agent during a synthesis process of the polycarboxylic acid water-reducing agent , wherein the unsaturated macromonomer D contains an unsaturated double bond , through free radical polymerization of which the macromonomer D is bonded to a backbone of polycarboxylic acid , and the unsaturated macromonomer D further contains a temperature-sensitive side chain;the unsaturated macromonomer D is prepared by a method comprising: carrying out a step-by-step addition polymerization reaction of polyethylene glycol A with a lactone or lactam monomer B to obtain an intermediate product C, and then reacting the intermediate product C with maleic anhydride to obtain the unsaturated macromonomer D containing the double bond at a terminal end and the temperature-sensitive side chain; andthe ...

TUNNELING ANNULUS GROUT

A grout composition for application to a tunneling surface is disclosed. The grout composition comprises a mixture including cement and at least one of a hydration stabilizer, a polycarbonate-based high range water reducer, and a viscosity modifier. The grout composition further includes water and a sprayed concrete accelerator. The sprayed concrete accelerator may be included in the composition at the time of application. 1. A grout mixture comprising:cement; andat least one of a hydration stabilizer; polycarboxylate-based high range water reducer; and viscosity modifier.2. The grout mixture of claim 1 , wherein said mixture further includes water in an amount sufficient to create a slurry having a water-to-cement ratio of between about 1.0-0.1.3. The grout mixture of claim 2 , wherein said hydration stabilizer is included in an amount such that the slurry achieves a flow of 4 minutes or less.4. The grout mixture of claim 2 , wherein said mixture further includes a sprayed concrete accelerator.5. The grout mixture of claim 4 , wherein said grout mixture has a minimum strength of about 0.1 mpa.6. The grout mixture of claim 4 , wherein said sprayed concrete accelerator comprises sodium silicate.7. The grout mixture of claim 4 , wherein said sprayed concrete accelerator comprises one or more of anhydrous aluminum sulfate and diethanolamine.8. The grout mixture of claim 7 , wherein said sprayed concrete accelerator further includes sepiolite.9. The grout mixture of claim 1 , wherein said hydration stabilizer comprises one or more of phosphonic acid claim 1 , sodium hydroxide claim 1 , and sodium gluconate.10. The grout mixture of claim 1 , wherein said hydration stabilizer is present in the mixture in an amount of about 0.5-10 oz/cmt.11. The grout mixture of claim 1 , wherein said polycarboxylate-based high range water reducer comprises a polycarboxylate ether.12. The grout mixture of claim 1 , wherein said polycarboxylate-based high range water reducer is present in ...

COPOLYMERS SUITABLE FOR PLASTICIZING INORGANIC BINDER SYSTEMS

The present invention relates to copolymers that comprise salicylic acid derivative structural units and structural units having free polyether side chains. The copolymers are suitable to plasticize inorganic binder systems, construction chemical compositions comprising said copolymers and the use of said copolymers as a plasticizer for inorganic binder systems. Binder systems with a reduced amount of Portland cement comprising at least one copolymer of the invention provide a better liquefaction and processability as compared to said binder systems without a copolymer of the invention. 2. The copolymer according to claim 1 , wherein t is 0.4. The copolymer according to claim 1 , wherein Ris H or CH claim 1 , Ris H claim 1 , Ris H or COOM claim 1 , x is 0 claim 1 , y is 1 claim 1 , and z is 1.5. The copolymer according to claim 1 , wherein Ris H or CH claim 1 , Rand Rare H claim 1 , x is 0 claim 1 , 1 or 2 claim 1 , y is 0 and z is 1.7. The copolymer according to claim 1 , wherein the copolymer comprises: [{'sup': 10', '12', '11', '13, 'sub': 3', '1', '4, 'a) Z is O and E and G together are a chemical bond, Rand Rare H, Ris H or CH, n is 1 or 2 and Ris H or an unbranched or branched C-Calkyl group; or'}, {'sub': 1', '6', '1', '4, 'sup': 10', '11', '12', '13, 'b) Z is O, E is an unbranched or branched C-Calkylene group, G is O, R, Rand Rare H, n is 0 and Ris H or an unbranched or branched C-Calkyl group; or'}], 'structural units (IIa), wherein{'sup': '25', 'structural units (IIc), wherein W is O or NR.'}8. The copolymer according to claim 7 , wherein in structural units (IIc) Rand Rare H claim 7 , Ris H or CHand Ris H or an unbranched or branched C-Calkyl group.9. The copolymer according to claim 1 , wherein the copolymer comprises structural units (IId) claim 1 , wherein Ris H claim 1 , Q is O claim 1 , and Ris H or an unbranched or branched C-Calkyl group.10. The copolymer according to claim 6 , wherein a is 5 to 135.12. A construction chemical composition ...

COPOLYMER FOR DISPERSANT FOR CEMENT, DISPERSANT FOR CEMENT, AND CEMENT COMPOSITION

An object of the present invention is to provide a novel copolymer capable of exerting excellent dispersibility to various kinds of cement including cement having low fluidity (difficult cement), and a dispersant for cement and cement composition including the copolymer. 3. The copolymer according to claim 1 ,{'sub': '3', 'claim-text': [{'sub': '3', 'a total amount of the component CA and the calcium oxide in the cement is more than 4% by weight, and'}, 'the amount of the calcium oxide in the cement is more than 0.2% by weight., 'wherein the copolymer is to be added to a cement containing component CA and calcium oxide,'}4. A dispersant for cement claim 1 , comprising the copolymer according to .5. A cement composition claim 1 , comprising the copolymer according to claim 1 , a cement claim 1 , and water claim 1 ,{'sub': '3', 'wherein the cement contains component CA and calcium oxide,'}{'sub': '3', 'a total amount of the component CA and calcium oxide in the cement is more than 4% by weight, and'}the amount of the calcium oxide in the cement is more than 0.2% by weight.6. The copolymer according to claim 2 ,{'sub': '3', 'wherein the copolymer is to be added to a cement containing component CA and calcium oxide,'}{'sub': '3', 'a total amount of the component CA and the calcium oxide in the cement is more than 4% by weight, and'}the amount of the calcium oxide in the cement is more than 0.2% by weight.7. A dispersant for cement claim 2 , comprising the copolymer according to .8. A cement composition claim 2 , comprising the copolymer according to claim 2 , a cement claim 2 , and water claim 2 ,{'sub': '3', 'wherein the cement contains component CA and calcium oxide,'}{'sub': '3', 'a total amount of the component CA and calcium oxide in the cement is more than 4% by weight, and'}the amount of the calcium oxide in the cement is more than 0.2% by weight. The present invention relates to a copolymer for a dispersant for cement, a dispersant for cement, and a cement ...

Cement Activator Composition for Treatment of Subterranean Formations

Various embodiments disclosed relate to cement activator compositions for treatment of subterranean formations. In various embodiments, the present invention provides a method of treating a subterranean formation including placing in the subterranean formation a liquid cement activator composition including water, an alkali sulfate salt, a polyphosphate salt, and a stabilizer polymer. 1. A pre-formulated liquid cement activator composition for a pozzolana-lime cement composition , the pre-formulated liquid cement activator composition having fluid loss control properties in addition to liquid cement activation properties and comprising:water;about 1 wt % to about 15 wt % of an alkali sulfate salt comprising potassium sulfate, lithium sulfate, sodium sulfate, or any combination thereof;a polyphosphate salt; and [ [{'sub': 1', '20, '—C(O)OH, a salt thereof, a substituted or unsubstituted (C-C)hydrocarbyl ester thereof,'}, {'sup': 1', '1, 'sub': 2', '1', '20, '—C(O)NR, wherein at each occurrence Ris independently selected from the group consisting of a substituted or unsubstituted (C-C)hydrocarbyl,'}, '—CN, and', 'any combination thereof,', 'wherein at each occurrence the ethylene is independently further substituted or unsubstituted, and, 'a repeating group that is an ethylene substituted with a group selected from the group consisting of, 'a repeating group that comprises an anionic group., 'a stabilizer polymer comprising2. The pre-formulated liquid cement activator composition of claim 1 , wherein the polyphosphate salt is about 1 wt % to about 15 wt % of the pre-formulated liquid cement activator composition claim 1 , and wherein the polyphosphate salt comprises sodium hexametaphosphate claim 1 , sodium trimetaphosphate claim 1 , sodium tetrametaphosphate claim 1 , sodium pentametaphosphate claim 1 , sodium heptametaphosphate claim 1 , sodium octametaphosphate claim 1 , or any combination thereof.3. The pre-formulated liquid cement activator composition of claim 1 ...

IMPROVED DISPERSANT FOR HYDRAULICALLY SETTING SYSTEMS

A copolymer, in particular a dispersing agent for hydraulically setting systems, includes at least three structural units S1, S2, S3 and optionally a further structural unit S4. 2. The copolymer according to claim 1 , wherein R═CHand m=0.3. The copolymer according to claim 1 , wherein R═H and m=0.4. The copolymer according to claim 1 , wherein R═H and/or CH claim 1 , and wherein m=1.5. The copolymer according to claim 1 , wherein Xand X claim 1 , independently of each other claim 1 , are represented by hydrogen claim 1 , an alkali metal ion claim 1 , an alkali earth metal ion claim 1 , or a divalent or trivalent metal ion.6. The copolymer according to claim 1 , wherein R═CHand n=2.7. The copolymer according to claim 1 , wherein R═CHand n=1.8. The copolymer according to claim 1 , wherein Arepresents a Cand/or Calkylene.9. The copolymer according to claim 1 , wherein R═H or CHand wherein Y=hydrogen claim 1 , an alkali metal ion claim 1 , an alkali earth metal ion claim 1 , or a divalent or trivalent metal ion.10. The copolymer according to claim 1 , wherein R═H and Y=hydroxyethyl.11. The copolymer according to claim 1 , wherein{'sup': 1', '1', '2, 'sub': '3', 'R═CH, m=0, and Xand X, independently of each other, are represented by hydrogen, an alkali metal ion, an alkali earth metal ion, or a divalent or trivalent metal ion,'}{'sup': 3', '2, 'sub': 3', '2', '3, 'R═CH, n=2, A=Cand/or Calkylene group, and p=25-80, and'}{'sup': '5', 'R═H and Y=hydrogen, an alkali metal ion, an alkali earth metal ion, or a divalent or trivalent metal ion.'}12. The copolymer according to claim 1 , wherein{'sup': 1', '1', '2, 'sub': '3', 'R═CH, m=0, and Xand X, independently of each other, are represented by hydrogen, an alkali metal ion, an alkali earth metal ion, or a divalent or trivalent metal ion,'}{'sup': 3', '2, 'sub': 3', '2', '3, 'R═CH, n=1, A=Cand/or Calkylene group, p=25-80, and'}{'sup': '5', 'R═H and Y=hydrogen, an alkali metal ion, an alkali earth metal ion, or a divalent or ...

CONCRETE REPAIR COATING

A concrete and asphalt repair coating formulation includes a cement component and an aggregate component. The cement component includes a calcium sulfoaluminate cement and a Portland cement. The aggregate component includes coarse aggregates between 125-500 microns in diameter and fine aggregates between 5-62.5 microns in diameter. 1. A concrete repair coating formulation , comprising:a cement component including a calcium sulfoaluminate cement and a Portland cement; andan aggregate component including coarse aggregates between 62.5 microns and 500 microns in diameter and fine aggregates between 62.5 microns to less than 5 microns in diameter.2. The concrete repair coating formulation of wherein said cement component has a ratio by weight of Portland cement to calcium sulfoaluminate cement ranging from 1/19 to 1/5.66.3. The concrete repair coating formulation of claim 2 , wherein the coarse aggregates include screen fractions of (a) minus 500 microns by plus 250 microns of limestone claim 2 , dolomitic limestone claim 2 , dolomite or quartz sand constituting between 10-25% by weight of total product claim 2 , (b) less than 250 microns by 125 microns constituting between 20-35% by weight of the total product and (c) less than 125 microns by plus 62.5 microns constituting between 6% to 10% by weight of total product.4. The concrete repair coating formulation of claim 3 , wherein said coarse aggregates are 50% to 60% by weight above 62.5 microns in diameter of the total product.5. The concrete repair coating formulation of claim 4 , wherein said fine aggregate of limestone claim 4 , dolomitic limestone claim 4 , dolomite and quartz sand fraction of less than 62.5 microns constitutes between 4-8% by weight of the total product.6. The concrete repair coating formulation of claim 5 , wherein said fine aggregates further include a quartz flour filler with an average particle size 5 microns that constitutes between 5-15% by weight of total concrete repair coating ...

Crack-Reducing Admixture for Cementitious Compositions

A cementitious composition including at least one cementitious material and at least one crack reducing admixture including: (i) from 0 to about 5 weight percent of at least one alcohol, based on the total weight of the admixture excluding water; and (ii) a compound having the chemical structure of formula (III): 2. The cementitious composition of claim 1 , wherein v is 2 and w is 2.3. The cementitious composition of claim 1 , further comprising at least one air entraining admixture.4. The cementitious composition of claim 3 , wherein the air entraining admixture comprises at least one synthetic air entrainer and/or at least on natural air entrainer.5. The cementitious composition of claim 4 , wherein the air entraining admixture comprises at least one of fatty acid air entrainers claim 4 , alkylbenzene sulfonate-based air entrainers claim 4 , α-olefin sulfonate-based air entrainers claim 4 , ethoxylated alcohol based air entrainers claim 4 , tall oil claim 4 , vinsol resin claim 4 , or rosin.6. The cementitious composition of claim 1 , further comprising aggregate and water.7. The cementitious composition of claim 1 , wherein the crack reducing admixture is present in the cementitious composition in an amount of about 0.25 to about 4 gallons claim 1 , optionally about 0.5 to about 3 gallons claim 1 , further optionally about 1 to about 2 gallons claim 1 , per cubic yard of the cementitious composition.8. The cementitious composition of claim 1 , wherein claim 1 , during curing claim 1 , the cementitious composition exhibits no cracks wider than about 100 μm.9. The cementitious composition of claim 1 , wherein the crack reducing admixture further comprises at least one acid in an amount effective to at least partially neutralize the admixture to reduce or eliminate the formation of precipitates in the admixture claim 1 , optionally wherein the at least one acid comprises acetic acid.11. The method of claim 10 , wherein v is 2 and w is 2.12. The method claim 10 , ...

COPOLYMERS HAVING A GRADIENT STRUCTURE

The present invention relates to a copolymer, especially for use as a dispersant for solid particles, in particular for use as dispersant for mineral binder compositions, having a polymer backbone and side chains bonded thereto, comprising at least one ionizable monomer unit M1 and at least one side chain-bearing monomer unit M2, wherein the copolymer has a gradient structure in at least one section A in a direction along the polymer backbone with regard to the ionizable monomer unit M1 and/or with regard to the side chain-bearing monomer unit M2. 1. A copolymer having a polymer backbone and side chains bonded thereto , and comprising at least one ionizable monomer unit M1 and at least one side chain-bearing monomer unit M2 , the copolymer having:at least one section A having a gradient structure in a direction along the polymer backbone with regard to the ionizable monomer unit M1 and/or with regard to the side chain-bearing monomer unit M2, andat least one section B having an essentially constant local concentration of monomers and/or a random distribution of monomers, wherein the at least one section B comprises ionizable monomer units M1 and/or side chain-bearing monomer units M2,wherein a ratio of the number of monomer units in the at least one section A to the number of monomer units in the at least one section B is in the range of 80:20 to 20:80.2. The copolymer as claimed in claim 1 , wherein the polydispersity of the copolymer is <1.5.3. The copolymer as claimed in claim 1 , wherein the polydispersity of the copolymer is in the range of 1.0-1.4.4. The copolymer as claimed in claim 1 , wherein the at least one section A has a proportion of at least 30% of monomer units claim 1 , based on a total number of the monomer units in the polymer backbone.5. The copolymer as claimed in claim 1 , wherein the at least one section A has a proportion of at least 50% of monomer units claim 1 , based on a total number of the monomer units in the polymer backbone.6. The ...

ADDITIVE FOR HYDRAULICALLY SETTING COMPOSITIONS

The present invention relates to an additive for hydraulically setting compositions, comprising an aqueous, colloidally disperse preparation of at least one salt of a polyvalent metal cation and of at least one polymeric dispersant which comprises anionic and/or anionogenic groups and polyether side chains. The additive is suitable particularly as a slump retainer. 2. The additive according to claim 1 , comprising at least one anion which is able to form a low-solubility salt with at least one of the polyvalent metal cations.4. The additive according to claim 2 , where the anion is selected from carbonate claim 2 , oxalate claim 2 , silicate claim 2 , phosphate claim 2 , polyphosphate claim 2 , phosphite claim 2 , borate claim 2 , aluminate and sulphate.5. The additive according to claim 1 , further comprising at least one neutralizing agent.6. The additive according to claim 5 , where the neutralizing agent is an organic monoamine claim 5 , polyamine claim 5 , ammonia or an alkali metal hydroxide.7. The additive according to claim 1 , having a pH of 2 to 11.5.11. The additive according to claim 1 , obtained by precipitating the salt of the polyvalent metal cation in the presence of the polymeric dispersant claim 1 , to give a colloidally disperse preparation of the salt claim 1 , or obtained by dispersing a freshly precipitated salt of the polyvalent metal cation in the presence of the polymeric dispersant claim 1 , to give a colloidally disperse preparation of the salt.12. The additive for hydraulically setting compositions according to claim 11 , where a neutralizing agent is added to the colloidally disperse preparation.13. The additive for hydraulically setting compositions according to claim 1 , obtained by peptizing a hydroxide and/or oxide of the polyvalent metal cation with an acid claim 1 , to give a colloidally disperse preparation of the salt of the polyvalent metal cation claim 1 , where the acid is optionally selected from boric acid claim 1 , carbonic ...

HIGH SOLIDS POLYCARBOXYLATE SYNTHESIS FOR CEMENT SUPERPLASTICIZERS

The present invention provides efficient methods to form a high solids content polymeric polyacid or a comb polymer useful as a superplasticizer or dispersant which comprise heating to from 80 to 100 C for a first time period, and then, sequentially, heating to a second temperature of from 150 to 250° C. for a second time period a wet reaction mixture having a solids content of from 80 to 99 wt. % and comprising from 15 to 60 wt. % of one or more ethylenically unsaturated acid or a salt thereof, from 37 to 76.99 wt. % of one or more polyether polyols, alkyl polyether polyols, polyether amines or alkyl polyether amines in the presence of (i) from 0.01 to 1 wt. %, of one or more water soluble radical initiators or redox pairs and (ii) from 2 to 22 wt. % of one or more phosphorus oxide containing compounds, all weights based on the total weight of the wet reaction mixture. 1. A method for making a polycarboxylate or polycarboxamide ether comprising:heating to a temperature of from 80 to 100° C. for a first time period of 5 to 300 minutes, and then, sequentially, heating to a second temperature of from 150 to 250° C. for a second time period of from 30 to 600 minutes a reaction mixture in water (wet reaction mixture) having a solids content of from 80 to 99 wt. % of the reaction mixture comprising from 15 to 60 wt. %, based on the total weight of the wet reaction mixture, of one or more ethylenically unsaturated acid or a salt thereof, from 37 to 76.99 wt. %, based on the total weight of the wet reaction mixture of one or more polyether polyols, alkyl polyether polyols, polyether amines or alkyl polyether amines, in the presence of (i) from 0.01 to 1 wt. %, based on the total weight of the wet reaction mixture, of one or more water soluble radical initiators or redox pairs and in the presence of (ii) from 2 to 22 wt. %, based on the total weight of the wet reaction mixture, one or more phosphorus oxide containing compounds chosen from a hypophosphite, such as sodium ...

HARDENING ACCELERATOR COMPOSITION FOR CEMENTITIOUS COMPOSITIONS

The invention concerns a process for the for the preparation of a hardening accelerator composition by reaction of a water-soluble calcium compound with a water-soluble silicate compound, the reaction being carried out in the presence of an aqueous solution which contains a plasticizer suitable for hydraulic binders, characterized in that said reaction is being carried out in the presence of apatite and that the molar ratio of calcium to phosphor in the hardening accelerator is from 25/1 to 400/1. 1. Process for the preparation of a hardening accelerator composition , containing calcium silicate hydrate , by reaction of a water-soluble calcium compound , optionally calcium salt , with a water-soluble silicate compound , the reaction of the water-soluble calcium compound with the water-soluble silicate compound being carried out in the presence of an aqueous solution which contains a plasticizer suitable for hydraulic binders , selected from the group of (A) comb polymers , (B) polycondensates containing (I) at least one structural unit consisting of an aromatic or heteroaromatic moiety bearing a polyether side chain and (II) at least one structural unit consisting of an aromatic or heteroaromatic moiety bearing at least one phosphoric acid ester group , (C) lignosulphonates and/or (D) β-naphthalene sulphonate formaldehyde condensates (BNS) , characterized in that the reaction of the water-soluble calcium compound with the water-soluble silicate compound is being carried out in the presence of apatite and that the molar ratio of calcium to phosphorus in the hardening accelerator is from 25/1 to 400/1.2. The process according to claim 1 , characterized in that the aqueous solution which contains the plasticizer or the plasticizers suitable for hydraulic binders contains the apatite.3. The process according to claim 1 , characterized in that the apatite is hydroxylapatite or comprises hydroxylapatite.4. The process according to claim 1 , characterized in that the ...

RECYCLED ASPHALT CONCRETE WITH MINIMIZED AMOUNT OF FLAT AND ELONGATED PARTICLES, AND MANUFACTURING METHOD THEREFOR

The present invention relates to recycled asphalt concrete and a manufacturing method therefor and, more specifically, to recycled and regenerated asphalt concrete and a manufacturing method therefor, which minimizes the amount of flat and elongated particles included in aggregates used as materials for asphalt concrete, thereby increasing the quality of the asphalt concrete to first grade (the amount of the flat and elongated particles is less than 10%) and increasing the durability of the asphalt concrete. 1. A recycled asphalt concrete with a minimized amount of flat and elongated particles , wherein the recycled asphalt concrete consists of 50 to 55 wt % of natural aggregates and recycled aggregates , 35 to 40 wt % of sand , 2.9 to 5 wt % of a filler , and 4.8 to 10 wt % of new asphalt containing PCM so that the amount of the flat and elongated particles is less than 10 wt % of the entire aggregates , wherein the PCM consists of 5 to 10 wt % of a recycling additive consisting of one of paraffinic and aromatic mixed oils or malten oil , Baca C oil (containing 10 to 20 wt % of asphalt and 15 to 30 wt % of malten oil) , 5 to 10 wt % of a modified additive , 1 to 5 wt % of a dispersant , and 1 to 5 wt % of p-toluene sulfonic acid (p-TSA) as a peel reducing agent with respect to the new asphalt.2. A recycled asphalt concrete with a minimized amount of flat and elongated particles , wherein the recycled asphalt concrete consists of 50 to 55 wt % of natural aggregates and recycled aggregates , 35 to 40 wt % of sand , 2.9 to 5 wt % of a filler , and 4.8 to 10 wt % of new asphalt containing PCM so that the amount of the flat and elongated particles is less than 10 wt % of the entire aggregates , wherein the PCM is constituted by mixing 5 to 10 wt % of a recycling additive consisting of one of paraffinic and aromatic mixed oils or malten oil , Baca C oil (containing 10 to 20 wt % of asphalt and 15 to 30 wt % of malten oil) , 5 to 10 wt % of a modified additive , 1 to 5 wt ...

ADDITIVE FOR SUSPENSIONS

The present invention proposes a polyczuboxylate ether-based additive having the general formula (I) for use as flow modifier in suspensions. The present invention further proposes a method for obtainment of such additive, wherein the method comprises the sequential steps of esterification of polyethylene glycol (PEG) with maleic anhydride (MA) and thus obtainment of a chemical product (PEGMA) and free radical polymerization in a mixture comprising acrylic acid (AA), 2-acrylamido-2 methylpropanesulfonic acid (AMPS) and PEGMA as reactants, further comprising water and an initiator, initial pH value of said mixture is within the range between 7.5 and 8.5, and any free oxygen is removed from the mixture throughout the free radical polymerization. 2. Mixture comprising polycarboxylate ether-based additive according to the .3. A method for obtainment of a polycarboxylate ether-based additive for use in suspensions claim 1 , wherein the method comprises the sequential steps of:a) Esterification of polyethylene glycol (PEG) with maleic anhydride (MA) and thus obtainment of a chemical product (PEGMA);b) Free radical polymerization in a mixture comprising acrylic acid (AA), 2-acrylamido-2 methylpropanesulfonic acid (AMPS) and PEGMA as reactants, said mixture further comprising water and an initiator; said mixture having an initial pH value within the range between 7.5 and 8 and any free oxygen is removed from the mixture throughout the free radical polymerization.4. A method according to the claim 3 , wherein the step (b) comprises following sequential steps:c) stirring upon preparation of a mixture comprising water, acrylic acid (AA), 2-acrylamido-2 methylpropanesulfonic acid (AMPS) and PEGMA for a first time interval ranging between 25 and 35 minutes, along with removal of free oxygen from the mixture,d) controlled addition of a first portion of initiator into the reactor, and raising the reactor temperature to a range between 48 and 53° C. and maintaining the reactor ...

Method for Low-to-Mid-Range Water Reduction of Cementitious Compositions

Methods for plasticizing cementitious mixtures having relatively high water/cement ratio (at least 0.40 or higher) are surprisingly improved in terms of dosage efficiency, compared to conventional “superplasticizer” polycarboxylate polymers, when the polycarboxylate polymer is formed from particularly small-sized, specifically selected monomer constituents: (A) polyoxyalkylene monomer represented by the structural formula (R)(R)C═C(R)((CH)(CO)O(CH)(AO)R) wherein (AO)represents linear ethylene oxide groups and p is 5-23 and more preferably 5-15; (B) unsaturated carboxylic acid represented by (R)(R)C═C(R)(C(O)OM) wherein M represents an alkali metal, the ratio of component A to component B being 20:80 to 50:50; and, optionally, (C) a hydrophilic monomer represented by (R)(R)C═C(R)(CX) wherein R, R, and Reach represent hydrogen or methyl group, and X represents C(O)NH, C(O)NHR, C(O)NRR, SOH, CHSOH, or C(O)NHC(CH)CHSOH, or mixture thereof, wherein R, R, and Reach represent a Cto Calkyl group. 1. (canceled)2. (canceled)3. (canceled)4. (canceled)5. (canceled)6. (canceled)7. (canceled)8. (canceled)9. (canceled)10. (canceled)11. (canceled)12. (canceled)13. (canceled)14. (canceled)15. (canceled)16. (canceled)18. The method of wherein the hydratable cementitious mixture is a concrete having a cement to concrete ratio within the range of 240 to 340 kg/m.19. The method of wherein claim 17 , in the first component (A) polyoxyalkylene monomer claim 17 , “p” is an integer of 5 to 15.20. The method of wherein claim 17 , in the first component (A) polyoxyalkylene monomer claim 17 , “p” is an integer of 8 to 12.21. The method of wherein claim 17 , in the first component (A) polyoxyalkylene monomer claim 17 , Rrepresents a methyl group.22. The method of further comprising adding to the cement and water at least one additional admixture selected from the group consisting of an alkanolamine claim 17 , a second air detraining agent which is different from the at least one air detraining ...

TWO COMPONENT SYNTHETIC WATER RETENTION AGENT AND RHEOLOGY MODIFIER FOR USE IN CEMENTS, MORTARS AND PLASTERS

The present invention provides compositions useful as a replacement for cellulose ether in cement, plaster or mortar compositions comprising i) nonionic or substantially nonionic vinyl or acrylic brush polymers having pendant or side chain polyether groups, and having a relative weight average molecular weight of from 140,000 to 50,000,000 g/mole, and ii) aromatic cofactors containing one or more phenolic groups, such as catechol tannins, phenolic resins, polyphenolics, and napthhols or, in combination, one or more aromatic groups with at least one sulfur acid group, such as naphthalene sulfonate aldehyde condensate polymers, poly(styrene-co-styrene sulfonate) copolymers, and lignin sulfonates, preferably branched cofactors, including phenolic resins, aldehyde condensate polymers and lignin sulfonates. The compositions may comprise a dry powder blend of i) and ii), one dry powder of both i) and ii), or an aqueous mixture. 1. A composition useful as a replacement for cellulose ether in cement , plaster or mortar compositions comprising i) one or more nonionic or substantially nonionic vinyl or acrylic brush polymers having pendant or side chain polyether groups , and having a relative weight average molecular weight of from 140 ,000 to 50 ,000 ,000 g/mole , and ii) one or more aromatic cofactors containing one or more phenolic groups or , in combination , one or more aromatic groups with at least one sulfur acid group.2. The composition as claimed in claim 1 , wherein the weight ratio of the total amount of i) brush polymer solids to the total amount of ii) aromatic cofactor solids ranges from 1:0.5 to 1:10.3. The composition as claimed in claim 1 , wherein the ii) one or more aromatic cofactor is chosen from a naphthalene sulfonate aldehyde condensate polymer claim 1 , a poly(styrene-co-styrene sulfonate) copolymer claim 1 , lignin sulfonate claim 1 , catechol tannins claim 1 , phenolic resins claim 1 , polyphenolics claim 1 , napthhol claim 1 , and mixtures thereof ...

CORROSION PROTECTED FIBRE-REINFORCED CEMENT COMPOSITION FOR USE IN COLD TEMPERATURE CONDITIONS

The present invention relates to an admixture for a cementitious composition, the cementitious composition comprising said admixture and a method for casting a durable cementitious solid, in particular a concrete, in cold weather conditions, such as in winter time or in cold geographical areas, more in particular for casting part of the cement tube in bore hole drilling in cold weather conditions. 118-. (canceled)19. Admixture for a cementitious composition , comprising:a) 9 to 75 weight %, relative to the total weight of the admixture, of metallic fibres,b) 18 to 74 weight %, relative to the total weight of the admixture, of calcium nitrate,c) 3 to 24 weight %, relative to the total weight of the admixture, of aluminium nitrate,d) 1.6 to 12.5 weight %, relative to the total weight of the admixture, of a superplasticizer (SP), ande) 0 to 1 weight %, relative to the total weight of the admixture, of an air entraining agent (AEA), wherein the sum of components a), b), c), d) and e) adds up to 100 weight %.20. Cementitious composition comprising:i) cement,ii) water,{'claim-ref': {'@idref': 'CLM-00019', 'claim 19'}, 'iii) the admixture for a cementitious composition according to , and'}iv) optionally an aggregate.21. The cementitious composition according to claim 20 , selected from the group consisting of a mortar composition claim 20 , a cement paste composition claim 20 , and a concrete composition.22. The cementitious composition according to claim 20 , wherein the water to cement weight ratio (w/c) is in the range of about 0.30 to 0.35.23. The cementitious composition according to claim 20 , wherein the metallic fibres are present at a concentration of 0.5 to 10 weight % claim 20 , relative to the weight of the cement.24. The cementitious composition according to claim 20 , wherein the calcium nitrate is present at a concentration of 2.5 to 3.5 weight % claim 20 , relative to the weight of the cement.25. The cementitious composition according to claim 20 , wherein ...

COPOLYMERS HAVING A GRADIENT STRUCTURE

The present invention relates to a copolymer, especially for use as a dispersant for solid particles, in particular for use as dispersant for mineral binder compositions, having a polymer backbone and side chains bonded thereto, comprising at least one ionizable monomer unit M1 and at least one side chain-bearing monomer unit M2, wherein the copolymer has a gradient structure in at least one section A in a direction along the polymer backbone with regard to the ionizable monomer unit M1 and/or with regard to the side chain-bearing monomer unit M2. 1. A copolymer , especially for use as a dispersant for solid particles , having a polymer backbone and side chains bonded thereto , comprising at least one ionizable monomer unit M1 and at least one side chain-bearing monomer unit M2 , wherein the copolymer has a gradient structure in at least one section A in a direction along the polymer backbone with regard to the ionizable monomer unit M1 and/or with regard to the side chain-bearing monomer unit M2.2. The copolymer as claimed in claim 1 , wherein the polydispersity of the copolymer is <1.5 and is particularly in the range of 1.0-1.4.3. The copolymer as claimed in claim 1 , wherein the at least one section A having the gradient structure has a proportion of at least 30% claim 1 , of monomer units claim 1 , based on a total number of monomer units in the polymer backbone.4. The copolymer as claimed in claim 1 , wherein the copolymer claim 1 , in addition to the at least one section A claim 1 , has a further section B having an essentially constant local concentration of monomers and/or a random distribution of monomers claim 1 , wherein the further section B comprises ionizable monomer units M1 and/or side chain-bearing monomer units M2.5. The copolymer as claimed in claim 4 , wherein the further section B having the essentially constant local concentration claim 4 , based on all the monomer units present therein claim 4 , comprises at least 30 mol % claim 4 , of side ...

FLUORESCENT POLYCARBOXYLATE SUPERPLASTICIZER AND PREPARATION METHOD THEREOF

A fluorescent polycarboxylate superplasticizer and a preparation method thereof. The preparation process of the polycarboxylate superplasticizer is as follows. Firstly, a redox radical polymerization is performed on a monomer of an unsaturated acid and a derivative thereof, and an unsaturated polyether monomer to form a polycarboxylate superplasticizer pre-product. Then, the polycarboxylate superplasticizer pre-product is subjected to an esterification reaction with an organic molecule having a fluorescent property to obtain the fluorescent polycarboxylate superplasticizer. The method effectively reduces the reaction difficulty and makes the reaction rapid and efficient. The fluorescent polycarboxylate superplasticizer is non-toxic and non-polluting, and has good controllability in the production process and less side reactions. The fluorescent polycarboxylate superplasticizer can be applied to different kinds of cement, having a high water-reducing rate, and a relatively high cost performance and competitive advantage. 2. The fluorescent polycarboxylate superplasticizer of claim 1 , wherein a weight-average molecular weight of the fluorescent polycarboxylate superplasticizer ranges from 20 claim 1 ,000 to 80 claim 1 ,000.3. A preparation method of a fluorescent polycarboxylate superplasticizer claim 1 , comprising the following steps:1) performing a redox radical polymerization reaction on a monomer of an unsaturated acid and a derivative of the unsaturated acid, and an unsaturated polyether monomer at a temperature of 5-45° C. for 3-5 hours under a combined action of an initiator, a reducing agent and a chain transfer agent to obtain a polycarboxylate superplasticizer pre-product; wherein, a molar ratio of the unsaturated polyether monomer, the monomer of the unsaturated acid and the derivative of the unsaturated acid, the initiator, the reducing agent and the chain transfer agent is 1:(2-6):(0.01-0.1): (0.02-0.2):(0.03-0.1); and2) performing an esterification ...

DISPERSANT FOR CALCIUM SULPHATE-BASED COMPOSITIONS

The present invention relates to the use of a copolymer as a dispersant for binder compositions based on calcium sulfate, the copolymer having a polymer backbone and sidechains bound thereto, and at least one ionizable monomeric unit M1 and at least one sidechain-carrying monomeric unit M2, characterized in that the copolymer has, in a direction along the polymer backbone, a non-random distribution of the monomeric units M1 and/or of the monomeric units M2. 1. A method comprising applying a copolymer as dispersant for binder compositions based on calcium sulfate , wherein the copolymer comprises a polymer backbone and side chains bonded thereto and there are at least one ionizable monomer unit M1 and at least one side chain-bearing monomer unit M2 , wherein the copolymer has a nonrandom distribution of the monomer units M1 and/or the monomer units M2 in a direction along the polymer backbone.2. The method as claimed in claim 1 , wherein the copolymer has a gradient structure and/or a block structure in at least one section.5. The method as claimed in claim 1 , wherein the copolymer is a block copolymer claim 1 , wherein the ionizable monomer unit M1 is present essentially in at least one first block A and the side chain-bearing monomer unit M2 essentially in at least one second block B.6. The method as claimed in claim 1 , wherein the copolymer has a gradient structure in at least one section AA in a direction along the polymer backbone with respect to the ionizable monomer unit M1 and/or with respect to the side chain-bearing monomer unit M2.7. The method as claimed in claim 6 , wherein the copolymer claim 6 , in addition to the at least one section AA having a gradient structure claim 6 , has a further section AB claim 6 , wherein there is essentially a constant local concentration of the monomers and/or a statistical or random distribution of the monomers over the entire section AB.8. The method as claimed in claim 1 , wherein the polydispersity of the copolymer ...

Low-to-Mid Range Water-Reducing Polymer With Mixed Polyoxyalkylene Side Chains

Methods for plasticizing cementitious mixtures having relatively high water/cement ratio (at least 0.40 or higher) are surprisingly improved in terms of dosage efficiency, compared to conventional “superplasticizer” polycarboxylate polymers, when the comb-type carboxylate copolymer is formed from two different polyether side chains, specifically selected monomer constituents: (A) first polyoxyalkylene monomer represented by structural formula (R)(R)C═C(R)((CH)(CO)O(CH)(AO)R) wherein (AO)represents linear alkylene oxide and p is an integer of 5-23; (B) second polyoxyalkylene monomer represented by structural formula (R)(R)C═C(R)((CH)(CO)O(CH)(AO)R) wherein (AO)represents linear alkylene oxide groups and q is an integer of 20 to 200; (C) unsaturated carboxylic acid monomer represented by (R)(R)C═C(R)(C(O)OM) wherein M represents an alkali metal, and the ratio of component A to component B is 20:80 to 50:50; and, optionally, (D) a water-soluble monomer represented by (R)(R)C═C(R)(X) wherein R, R, and Reach represent hydrogen or methyl group, and X represents C(O)NH, C(O)NHR, C(O)NRR, OR, SOH, CHSOH, or C(O)NHC(CH)CHSOH, or mixture thereof, wherein R, R, R, and Reach represent a Cto Calkyl group. 2. The method of wherein said hydratable cementitious mixture is a concrete having a cement to concrete ratio within the range of 240 to 340 kg/m.3. The method of wherein claim 1 , in said first polyoxyalkylene monomer of component (A) claim 1 , “p” is an integer of 8 to 30.4. The method of wherein claim 1 , in said first polyoxyalkylene monomer of component (A) claim 1 , “p” is an integer of 10 to 25.5. The method of wherein claim 1 , in said second polyoxyalkylene monomer of component (B) claim 1 , “q” is an integer of 25 to 150.6. The method of wherein claim 1 , in said second polyoxyalkylene monomer of component (B) claim 1 , “q” is an integer of 30 to 100.7. The method of wherein said first and second monomer components (A) and (B) claim 1 , the polyoxyalkylene is ...

Superplasticizing Admixture for Cementitious Compositions

The present invention provides a composition and method for modifying a hydratable cementitious composition such as concrete or mortar using at least three different, distinct carboxylate polymers, even when clay is present in the concrete or mortar that would otherwise diminish dosage efficiency of polycarboxylate polymer used as dispersant. The three polycarboxylate polymers, designated as Polymer I, Polymer II, and Polymer II, are derived from monomer Components A, B, and C wherein Component A is an unsaturated carboxylic acid, Component B is a polyoxyalkylene, and Component C is an unsaturated carboxylate ester. The component molar ratio ranges for A:B:C are different as between Polymers I and II; while a distinct component molar ratio A:B+C is identified for Polymer III. When treated with these three different polycarboxylate polymers, the hydratable cementitious composition is surprisingly enhanced in terms of initial workability and slump retention, especially if clay is present. 2. The composition of wherein claim 1 , in Polymer I claim 1 , the molar ratio of Component A to Component B is in the range (A:B) of 2:1 to 5:1.3. The composition of wherein claim 1 , in Polymer I claim 1 , the molar ratio of Component A to Component B is in the range (A:B) of 2.3:1 to 4.5:1.4. The composition of wherein claim 1 , in Polymer I claim 1 , the molar ratio of Component A to Component B is in the range (A:B) of 2.5:1 to 4.0:1.5. The composition of wherein claim 1 , in Polymer II claim 1 , the molar ratio of Component A to Component B is in the range (A:B) of 0.1:1 to 2:1.6. The composition of wherein claim 1 , in Polymer II claim 1 , the molar ratio of Component A to Component B is in the range (A:B) of 0.6:1 to 1.7:1.7. The composition of wherein claim 1 , in Polymer III claim 1 , the molar ratio of Component A to the sum of Components B and C is in the range (A:B+C) of 0.3:1 to 3:1.8. The composition of wherein claim 1 , in Polymer III claim 1 , the molar ratio of ...

THERMO-INSULATING CONCRETE

The present invention refers to a new concrete composition comprising fiberglass waste and an air-entraining additive. The concrete presents a thermo-insulating performance far superior to conventionally produced concretes. The present invention is mainly intended for the construction industry, in non-structural applications for thermal insulation. The use of fiberglass waste reduces the consumption of natural aggregates and allows for the use of waste which is expense to dispose of. 1. A thermo-insulating concrete comprising cement , a fine aggregate , fiberglass waste , water and one or more air-entraining additives , where:the proportion by weight of cement:fine aggregate:fiberglass waste ranges from 1:1:1.5 to 1:3:3;the ratio by weight of water/cement ranges from 0.45 to 0.60; andthe quantity of air-entraining additive ranges from 0.1% to 1% by weight of the total mass of cement.2. The thermo-insulating concrete of claim 1 , the cement is a Portland cement of type CP-I or CP-III RS 40.3. The thermo-insulating concrete of claim 1 , wherein the fiberglass has particle size between 4.8 mm and 25 mm.4. The thermo-insulating concrete of claim 1 , wherein the air-entraining additive is a surfactant.5. The thermo-insulating concrete of claim 4 , wherein the air-entraining additive is a common surfactant based on Linear Alkylbenzene Sulfonate.6. The thermo-insulating concrete of claim 1 , wherein the fine aggregate has particle size less than 4.8 mm.7. The thermo-insulating concrete of claim 1 , wherein the fine aggregate is sand claim 1 , steel plant slag claim 1 , quartzite waste claim 1 , iron ore tailings claim 1 , or mixtures thereof.8. The thermo-insulating concrete of claim 1 , wherein the proportion by weight of cement: fine aggregate: fiberglass waste is from 1:1.8:2.42.9. The thermo-insulating concrete of claim 1 , wherein the ratio by weight of water/cement varies from 0.50 to 0.55.10. A method for refitting a building comprising installing the thermo- ...

Polymers in solid changing state

Polymers in the form of solid aggregate are obtained by reacting polymers derived from unsaturated mono- or di-carboxylic acids with polymers having unreactive blocking groups at one end of the chain and hydroxy or amino groups at the other end. Polymers in the form of a solid aggregate (I), obtained by reaction of: (A) polymer(s) derived from (a) unsaturated mono- or di-carboxylic acid(s) or analogs thereof and optionally (b) other unsaturated monomer(s); (B) polymer(s) which are terminated with functional hydroxy or amino groups at one end and blocked at the other end with groups which are unreactive under normal reaction conditions; and optionally (C) amine(s). Independent claims are also included for: (1) aggregated polymers (IA) as above, obtained by reaction of monomers (a) with (c) unsaturated esters and/or amides of polymer (B) and optionally other monomers (b) in presence of a radical initiator; (2) a method (M1) for the production of (I) by cooling a polymer melt and optionally pulverizing it into a transportable form; (3) a method (M2) for the production of (IA) by copolymerization of monomers as in (1) above, optionally in a solvent which is subsequently removed; and (4) aqueous solutions obtained by dissolving these polymers in water

Полимеры в твердом агрегатном состоянии

ÐÎÑÑÈÉÑÊÀß ÔÅÄÅÐÀÖÈß (19) RU (51) ÌÏÊ 7 (11) 2004 131 541 (13) A C 08 G 81/02 ÔÅÄÅÐÀËÜÍÀß ÑËÓÆÁÀ ÏÎ ÈÍÒÅËËÅÊÒÓÀËÜÍÎÉ ÑÎÁÑÒÂÅÍÍÎÑÒÈ, ÏÀÒÅÍÒÀÌ È ÒÎÂÀÐÍÛÌ ÇÍÀÊÀÌ (12) ÇÀßÂÊÀ ÍÀ ÈÇÎÁÐÅÒÅÍÈÅ (21), (22) Çà âêà: 2004131541/04, 19.03.2003 (71) Çà âèòåëü(è): ÇÈÊÀ ØÂÀÉÖ Àà (CH) (30) Ïðèîðèòåò: 25.03.2002 EP 02006760.9 (43) Äàòà ïóáëèêàöèè çà âêè: 20.04.2005 Áþë. ¹ 11 (86) Çà âêà PCT: EP 03/02892 (19.03.2003) (87) Ïóáëèêàöè PCT: WO 03/08071 (02.10.2003) Àäðåñ äë ïåðåïèñêè: 129010, Ìîñêâà, óë. Á.Ñïàññêà , 25, ñòð.3, ÎÎÎ "Þðèäè÷åñêà ôèðìà Ãîðîäèññêèé è Ïàðòíåðû", ïàò.ïîâ. Ã.Á. Åãîðîâîé R U Ôîðìóëà èçîáðåòåíè 1. Ïîëèìåð â òâåðäîì àãðåãàòíîì ñîñòî íèè, ïîëó÷åííûé ïóòåì ðåàêöèè, ïî ìåíüøåé ìåðå, îäíîãî ïîëèìåðà À, ïîëó÷åííîãî èç, ïî ìåíüøåé ìåðå, îäíîãî ìîíîìåðà à, âûáðàííîãî èç íåíàñûùåííûõ ìîíî- èëè äèêàðáîíîâûõ êèñëîò èëè àíàëîãà íåíàñûùåííûõ ìîíî- èëè äèêàðáîíîâûõ êèñëîò è, â ñëó÷àå íåîáõîäèìîñòè, ïî ìåíüøåé ìåðå, îäíîãî ýòèëåííåíàñûùåííîãî ìîíîìåðà b, ïî ìåíüøåé ìåðå, ñ îäíèì ïîëèìåðîì B, êîòîðûé ñ îäíîé ñòîðîíû çàêàí÷èâàåòñ êîíöåâûìè ãðóïïàìè, íåðåàêöèîííîñïîñîáíûìè ïðè îáû÷íûõ óñëîâè õ ðåàêöèè, è íà äðóãîì êîíöå èìååò ôóíêöèîíàëüíûå ãèäðîêñèëüíûå èëè àìèíîãðóïïû, è, â ñëó÷àå íåîáõîäèìîñòè, ïî ìåíüøåé ìåðå, ñ îäíèì àìèíîì C. 2. Ïîëèìåð â òâåðäîì àãðåãàòíîì ñîñòî íèè, ïîëó÷åííûé ïóòåì ðåàêöèè, ïî ìåíüøåé ìåðå, îäíîãî ìîíîìåðà à, âûáðàííîãî èç íåíàñûùåííûõ ìîíî- èëè äèêàðáîíîâûõ êèñëîò èëè àíàëîãà íåíàñûùåííûõ ìîíî- èëè äèêàðáîíîâûõ êèñëîò, â ïðèñóòñòâèè èñòî÷íèêà ðàäèêàëîâ, ïî ìåíüøåé ìåðå, ñ îäíèì ìîíîìåðîì ñ, âûáðàííûì èç ãðóïïû íåíàñûùåííûõ ñëîæíûõ ýôèðîâ è àìèäîâ ïîëèìåðà B, êîòîðûé ñ îäíîé ñòîðîíû çàêàí÷èâàåòñ êîíöåâûìè ãðóïïàìè, íåðåàêöèîííîñïîñîáíûìè ïðè îáû÷íûõ óñëîâè õ ðåàêöèè, è íà äðóãîì êîíöå èìååò ôóíêöèîíàëüíûå ãèäðîêñèëüíûå èëè àìèíîãðóïïû, è, â ñëó÷àå íåîáõîäèìîñòè, ïî ìåíüøåé ìåðå, ñ îäíèì ýòèëåííåíàñûùåííûì ìîíîìåðîì b. 3. Ïîëèìåð â òâåðäîì àãðåãàòíîì ñîñòî íèè ïî ï. 1 èëè 2, îòëè÷àþùèéñ òåì, ÷òî àíàëîã íåíàñûùåííîé ìîíî- èëè äèêàðáîíîâîé êèñëîòû âûáðàí èç ...

Эмульгирующие полимеры и их применение

1. Полимер P, получаемый сополимеризацией ! a) по меньшей мере одного мономера A с этиленовой ненасыщенностью, выбранного из группы, состоящей из ненасыщенных моно- или дикарбоновых кислот или аналогов ненасыщенных моно- или дикарбоновых кислот, ненасыщенных сульфоновых кислот или аналогов ненасыщенных сульфоновых кислот, и ненасыщенных фосфоновых кислот или аналогов ненасыщенных фосфоновых кислот, с ! b) по меньшей мере одним этиленовоненасыщенным мономером B формулы (I), (II) или (III), ! ! ! ! где R1 независимо друг от друга означают указанные в (a) моно- или дикарбоновые кислоты после удаления n групп карбоновой кислоты, ! где R2 независимо друг от друга означают H, алкил с 1-20 атомами углерода или алкиларил с 7-20 атомами углерода, ! где R3 означает указанные в (a) дикарбоновые кислоты после удаления обеих групп карбоновой кислоты, ! где Y независимо друг от друга означают , или , ! где R4 независимо друг от друга означают алкил с 1-20 атомами углерода, алкиларил с 7-20 атомами углерода или H, предпочтительно R4=H, ! n независимо друг от друга означают 1 или 2, ! где r независимо друг от друга имеют значение 0 или 1, ! x, y, z каждый независимо друг от друга имеет значение от 0 до 250, и x+y+z=3 или больше; ! где Q означает остаток многоатомного спирта формулы Q(OH)q+1 после удаления всех OH-групп, ! q имеет значение от 2 до 5, в частности, 2 или 3, ! и c) с по меньшей мере одним этиленовоненасыщенным мономером C формулы (IV), ! ! где R5 независимо друг от друга означают алкил с 1-30 атомами углерода, алкокси формулы -OR6, полиоксиалкилокси формулы -O-[(C2H4O)x-(C3H6O)y-(C4H8O)Z]-R2, Cl, F, Br или NO2, ! где m является числом от 0 до 5, предпочтительно 0, ! R6 независимо друг от друга означают алки РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 2010 107 237 (13) A (51) МПК C08F 220/06 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ, ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ (12) ЗАЯВКА НА ИЗОБРЕТЕНИЕ (21)(22) Заявка: 2010107237/04, 31.07.2008 (71) Заявитель(и): ЗИКА ...

乳化聚合物及其用途

本发明涉及一种乳化的聚合物，特别是所述聚合物用于稳定地乳化水性混凝土液化剂中疏水添加剂的用途。

자기 가교형 아스팔트용 개질 첨가제 및 이의 제조방법, 그리고 이를 포함하는 상온 재생 아스팔트 콘크리트

본 발명은, 자기 가교형 아스팔트용 개질 첨가제에 관한 것으로서, 보다 상세하게는 아스팔트 콘크리트 내 혼합시, 아스팔트의 물성을 개선시키고, 이로 인하여 골재와 골재 사이의 접착성을 향상시켜 내부 응집력을 증가시킴으로써, 아스팔트 콘크리트의 강도를 향상시킬 수 있는 자기 가교형 아스팔트용 개질 첨가제 및 이의 제조방법, 그리고 이를 포함하는 상온 재생 아스팔트 콘크리트에 관한 것으로서, 아스팔트의 점도가 낮아져 작업성이 향상되고 이로 이하여 양생시간이 단축되어 공사기간을 줄일 수 있다. 또한, 개질 첨가제 내 아크릴 에멀젼으로 인하여 아스팔트의 접착력이 향상되어 골재 간의 결합력을 향상시킴으로써, 아스팔트 콘크리트에 필요한 마샬안정도값 및 흐름값의 개선이 이루어지게되어 신재골재의 사용량을 최소화할 뿐만 아니라, 산업폐기물인 폐아스팔트 콘크리트를 재활용하여 사용함으로써 산업상 유용한 용도를 갖도록 재활용하여 환경을 보호하고 경제성을 높일 수 있다. 또한, 개질 첨가제 내 열가교제를 포함함으로써, 고온에서 가교결합 성질을 활용하여 아스팔트의 물성을 향상시켜 아스팔트 콘크리트의 소성변형, 비로균열, 마모, 탈리저항성 등 내구성능을 향상시킬 수 있다.

Emulsifying polymers and use thereof

FIELD: chemistry. SUBSTANCE: invention relates to emulsifying polymers and use of these polymers for stable emulsification of hydrophobic additives in aqueous concrete plasticisers. Disclosed is a polymer P, obtained via copolymerisation (a) of at least one ethylenically unsaturated monomer A selected from a group consisting of unsaturated mono- and dicarboxylic acids, sulphonic acids, phosphonic acids in form of free acids or salts or partial salts or halide or anhydride, with (b) at least one ethylenically unsaturated monomer B of formula , or , where radicals and coefficients are as described in the claim and (c) with at least one ethylenically unsaturated monomer C of formula , where radicals and coefficients are as described in the claim and with (d) at least one ethylenically unsaturated monomer D of formula , where radicals and coefficients are as described in the claim and optionally (e) with at least one basic ethylenically unsaturated monomer E of formula , where radicals and coefficients are as described in the claim and optionally (f) with at least one other ethylenically unsaturated monomer W. Use of the polymer as a plasticiser for water-curable compositions and a water-curable composition are also disclosed. EFFECT: polymer improves quality of mortar. 19 cl, 5 tbl РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 2 467 984 (13) C2 (51) МПК C04B C08F C08F C08F C08F C08F ФЕДЕРАЛЬНАЯ СЛУЖБА C08F ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ C08F (12) ОПИСАНИЕ 40/00 (2006.01) 220/06 (2006.01) 212/06 (2006.01) 212/08 (2006.01) 218/00 (2006.01) 222/02 (2006.01) 222/08 (2006.01) 222/40 (2006.01) ИЗОБРЕТЕНИЯ К ПАТЕНТУ (21)(22) Заявка: 2010107237/04, 31.07.2008 (24) Дата начала отсчета срока действия патента: 31.07.2008 (73) Патентообладатель(и): ЗИКА ТЕКНОЛОДЖИ АГ (CH) (43) Дата публикации заявки: 10.09.2011 Бюл. № 25 2 4 6 7 9 8 4 (45) Опубликовано: 27.11.2012 Бюл. № 33 (56) Список документов, цитированных в отчете о поиске: WO 2004/056445 A1, 08.07.2004. EP 0667371 A2, 16.08.1995. RU ...

Cement admixture and cement composition

개질 아스팔트를 이용한 구스 아스팔트 조성물

본 발명은 스트레이트 아스팔트 56-95 중량%; 탄성중합체 1-10 중량%; 열가소성 수지 1-10 중량%; 석유계 PITCH 1-10 중량%; 아미드 왁스 1-10 중량%; 열안정제 0.1-5 중량%;를 포함하는 것을 특징으로 하는 개질 아스팔트를 이용한 구스 아스팔트 조성물을 제시함으로써, 천연 아스팔트를 혼입하지 않음에 따라, 균일한 배합비율을 유지할 수 있고, 고온에서의 냄새 및 연기 배출을 저하시킬 수 있으며, 효율적인 공정관리가 가능하면서도, 도로포장의 내구성, 열안정성, 소성변형 저항성, 내후성, 내마모성 등의 특성을 향상시킬 수 있도록 한다.

Polimero fabricado a partir de acido maleico, eter de alilo y acetato de vinilo y la preparacion y uso de dicho polimero.

La invención se relaciona con los polímeros en peine hechos a partir de ácido maleico o derivados de los mismos, éteres de alilo, y acetato de vinilo y la preparación del mismo por polimerización de radical libre en una temperatura de reacción de 10°C a 50°C. La invención se relaciona además con el uso de dichos polímeros en peine para mejorar la aplicabilidad de composiciones de fraguado hidráulico.

一种除霉防腐型的聚羧酸减水剂及其制备方法

本发明公开了一种除霉防腐型的聚羧酸减水剂及其制备方法，分子量为20000～60000，结构如通式Ⅰ所示，其中R 1 为H或CH 3 ，R 2 为H或COOM，R 3 为2～4个碳的烷基，R 4 为1～3个碳的烷基，M为H或Na或K或NH 4 ；该除霉防腐型的聚羧酸减水剂通过聚醚单体、复合型除霉防腐剂、引发剂、不饱和羧酸和分子量调节剂反应制得，除霉防腐效果好，绿色环保无毒，提高混凝土性能，且制备过程简单，无需改造现有设备。

一种利用衣康酸废液制备聚羧酸减水剂的方法

本发明公开了一种利用衣康酸废液制备聚羧酸减水剂的方法，所述减水剂由以下重量组分制成：甲基烯丙基聚氧乙烯醚290～340份、过氧化氢3～4.5份、丙烯酸20～25份、衣康酸废液50～80份、疏基丙酸1.2～2.5份、维生素C 1.2～2份，本发明减水剂的合成方法中，利用氧化还原体系，引发自由基聚合，使反应可以在室温下进行，节省聚合过程中丙烯酸的用量，衣康酸废液含有缓凝组分，节省后期减水剂中缓凝组分的加入，能提高混凝土的坍落度保持能力，调整氧化剂同还原剂的配比，确定各单体用量，提高转化率，防止原料的浪费并有效的控制了副反应的发生，本发明制得的减水剂具有高减水率，保坍性能好，适用范围广，适合工业化大规模生产。

시멘트 분쇄 보조제

본 발명은 시멘트 분쇄 보조제로서 사용되어 시멘트 분쇄 시간을 효율적으로 감소시킬 수 있게 하며 우수한 특징을 나타내는 시멘트를 얻도록 하는 수성의 중합체 조성물에 관한 것이다. 공지의 시멘트 분쇄 보조제들과 중합체 A를 결합한 시멘트 분쇄 보조제를 개시한다. 시멘트 분쇄 보조제

一种高效保坍剂及其制备方法

一种高效保坍剂，包括如下重量份组分：250‑600份单体A、11‑40份单体B、20‑60份单体C、5‑15份单体D、1‑20份引发剂、0.8‑10份复合分子量调节剂、0.5‑4份维C钠、300‑700份水，其中，单体A为异戊烯基聚乙二醇醚、羟丁基乙烯基聚乙二醇醚、乙氧基乙烯基聚乙二醇醚中的任一种或几种混合，单体B为丙烯酸、富马酸、衣康酸、马来酸酐中的任一种或两种混合，单体C为丙烯酸羟乙酯、丙烯酸羟丙酯、甲基丙烯酰氧磷酸酯、甲基丙烯酸羟乙酯中的任一种或几种混合，单体D为二丙烯酰胺二甲基丙磺酸或丙烯酰胺，复合分子调节剂为巯基乙醇。这些组分经搅拌反应制得产品。本发明提供的高效保坍剂保坍性能好、性能波动较小，适应性优，可有效满足各地区混凝土的保坍要求。

배수성 아스팔트의 제조방법

본 발명은 최대 골재 입경이 13㎜인 조골재 85∼87％, 모래 8∼10％, 채움재 5~6％의 골재 배합물에 상기 골재 배합물 사용량의 4.5∼5.5％의 개질 아스팔트를 혼합하고, 상기 개질 아스팔트는 60℃에서 점도가 200,000 포이즈 이상이 되도록 중량평균 분자량이 70,000∼110,000 범위의 열가소성 SBS 공중합체를 주성분으로 하는 개질제가 아스팔트에 대해 11∼13％를 첨가하여 제조한 고점도의 개질 아스팔트를 혼합하여 제조한 약 20∼27％의 공극률을 갖는 차도 포장용 배수성 아스팔트 및 그 제조방법을 구현하고자 한다.

Concrete mixture for making high-strength concrete of different density, method of its producing, concrete and method of its producing

FIELD: building industry and materials. SUBSTANCE: invention relates to an aqueous concrete mixture having volume of air pores from 10 to 85%, preferably from 20 to 85% and to concrete having homogeneous density and high strength. Method of making involves addition of an aqueous anionic surface-active compound to concrete mixture. This compound has two groups of sulfonic acid of the general formula (R) m -R 1 -(SO 3 M) 2 where R means aliphatic group containing 4-20 carbon atoms; m is the whole number 1 or 2 and total amount of carbon atoms or in groups R is 6-30; R 1 is an aromatic group containing at least 2 aromatic cycles and 10-20 carbon atoms; M means monovalent cation or hydrogen atom preferably. Anionic compound shows air-absorbing effect and improves homogeneity of concrete mixture. EFFECT: homogeneous density and high strength of concrete. 14 cl, 5 tbl, 3 ex Эс 08с ПЧ с» смесь (19) РОССИЙСКОЕ АГЕНТСТВО ПО ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ ВИ `” 2 180 326 (51) МПК” (13) С2 С 04 В 38/10 (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ РОССИЙСКОЙ ФЕДЕРАЦИИ (21), (22) Заявка: 98120644/03, 04.04.1997 (24) Дата начала действия патента: 04.04.1997 (30) Приоритет: 18.04.1996 ЗЕ 9601471-7 (43) Дата публикации заявки: 20.10.2000 (46) Дата публикации: 10.03.2002 (56) Ссылки: ЗЦ 1749431 АЗ, 23.07.1992. $Ц 337362 А, 02.06.1972. $Ц 302320 А, 22.06.1911. $Ч 1409614 АЛ, 15.07.1988. КЦ 2084427 СЛ, 20.07.1997. СВ 717766 А, 03.11.1954. 9$ 3468684 А, 23.09.1969. (85) Дата перевода заявки РСТ на национальную фазу: 18.11.1998 (86) Заявка РСТ: ЕР 97/01682 (04.04.1997) (87) Публикация РСТ: М/О 97/39992 (30.11.1997) (98) Адрес для переписки: 129010, Москва, ул. Большая Спасская 25, стр.3, ООО "Юридическая фирма Городисский и Партнеры", Томской Е.В. (71) Заявитель: . АКЦО НОБЕЛЬ СЕРФЕИС КЕМИСТРИ АБ (ЗЕ), СЕНАД ТЕКНИКБЕТОНГ АБ (ЗЕ) (72) Изобретатель: СТРИД Челль ($Е), ИОХАНССОН Ингемар (3Е), СВЕДМАН Челль (ЗЕ), НЕСЛУНД Марита ($Е) (73) Патентообладатель: . АКЦО НОБЕЛЬ СЕРФЕИС КЕМИСТРИ АБ (ЗЕ), СЕНАД ...

Anti-sagging gypsum board composition

The present invention provides a gypsum board composition comprising gypsum and a deformation preventing additive, wherein the deformation preventing additive comprises a gallic acid compound, and a gypsum board using the composition. The composition of the present invention can enhance quality and reliability of the gypsum board.

Cement compositions for reducing gas or water migration and methods of using the same

A method of cementing a wellbore comprising preparing a cement composition comprising a water-soluble aromatic sulfonated polymer, and placing the cement composition into the wellbore, wherein the cement composition develops a compressive strength of greater than about zero in less time than a similar cement composition having a comparable thickening time and lacking a water-soluble aromatic sulfonated polymer. A cement composition comprising a water-soluble aromatic sulfonated polymer, wherein the cement composition develops a compressive strength of greater than about zero in less time than a similar cement composition having comparable thickening time and lacking a water-soluble aromatic sulfonated polymer.

Cement compositions for reducing gas or water migration and methods of using the same

A method of cementing a wellbore comprising preparing a cement composition comprising a water-soluble aromatic sulfonated polymer, and placing the cement composition into the wellbore, wherein the cement composition develops a compressive strength of greater than about zero in less time than a similar cement composition having a comparable thickening time and lacking a water-soluble aromatic sulfonated polymer. A cement composition comprising a water-soluble aromatic sulfonated polymer, wherein the cement composition develops a compressive strength of greater than about zero in less time than a similar cement composition having comparable thickening time and lacking a water-soluble aromatic sulfonated polymer.

Cement compositions for reducing gas or water migration and methods of using the same

A method of cementing a wellbore comprising preparing a cement composition comprising a water-soluble aromatic sulfonated polymer, and placing the cement composition into the wellbore, wherein the cement composition develops a compressive strength of greater than about zero in less time than a similar cement composition having a comparable thickening time and lacking a water-soluble aromatic sulfonated polymer. A cement composition comprising a water-soluble aromatic sulfonated polymer, wherein the cement composition develops a compressive strength of greater than about zero in less time than a similar cement composition having comparable thickening time and lacking a water-soluble aromatic sulfonated polymer.

Cement compositions for reducing gas or water migration and methods of using the same

A method of cementing a wellbore comprising preparing a cement composition comprising a water-soluble aromatic sulfonated polymer, and placing the cement composition into the wellbore, wherein the cement composition develops a compressive strength of greater than about zero in less time than a similar cement composition having a comparable thickening time and lacking a water-soluble aromatic sulfonated polymer. A cement composition comprising a water-soluble aromatic sulfonated polymer, wherein the cement composition develops a compressive strength of greater than about zero in less time than a similar cement composition having comparable thickening time and lacking a water-soluble aromatic sulfonated polymer.

Method for improving the mechanical strength, particularly the strength "at the young ages" of cement matrices, and the cement matrices obtained thereby

Cements or hydraulic binders may be prepared by adding an aqueous suspension comprising a ground mineral filler and at least one grinding aid agent to a cement or hydraulic binder. The resulting cement or hydraulic binder has very appreciably improved mechanical properties, particularly the property of “strength at young ages.” The grinding aid agent may be a natural or synthetic homopolymer and/or copolymer.

Method for improving the mechanical strength, particularly the strength "at young ages" of cement matrices, and the cement matrices obtained thereby

Cements or hydraulic binders may be prepared by adding an aqueous suspension comprising a ground mineral filler and at least one grinding aid agent to a cement or hydraulic binder. The resulting cement or hydraulic binder has very appreciably improved mechanical properties, particularly the property of “strength at young ages.” The grinding aid agent may be a natural or synthetic homopolymer and/or copolymer.

PROCESS FOR IMPROVING MECHANICAL RESISTANCE IN PARTICULAR "TO THE YOUNG AGES" OF CEMENT MATRICES, CEMENT MATRICES THUS OBTAINED AND THEIR USES

Cement and cement composition having improved rheological properties

An improved hydraulic cement and resultant hydraulic cement composition having an imidized acrylic polymer uniformly distributed therein.

Cement admixture product

The present invention is directed to a polyoxyalkylene ammonium salt of an imidized polycarboxylic acid polymer cement admixture, storage stable aqueous solutions of said polymer, and to improved cement compositions containing said polymer.

Polymers in a solid state

本发明涉及固态聚合物，其可以通过以下物质的反应而获得：至少一种聚合物A，该聚合物A由选自不饱和一元羧酸或二元羧酸或不饱和一元羧酸或二元羧酸的类似物的至少一种单体a以及非必要地至少一种烯属不饱和单体b制备；至少一种聚合物B，该聚合物B用在常规反应条件下为非反应性的端基在一侧封端并在另一端加以羟基官能化或胺官能化；以及非必要地至少一种胺C。本发明还涉及固态聚合物，其可以通过至少一种单体a，该单体a选自不饱和一元羧酸或二元羧酸或不饱和一元羧酸或二元羧酸的类似物，在自由基产生剂存在下，与至少一种单体c，该单体c选自用在常规反应条件下为非反应性端基在一侧封端并在另一端加以羟基官能化或胺官能化的聚合物B的不饱和酯或酰胺，以及与非必要地至少一种烯属不饱和单体b反应而获得。另外，还公开了该固体聚合物的制备方法及其作为分散剂和流化剂在水泥体系中的用途。

一种超支化型聚羧酸盐高效减水剂及其制备方法

本发明涉及一种超支化型聚羧酸盐高效减水剂及其制备方法，所述的减水剂由丙烯酸叔丁酯和甲基丙烯酸叔丁酯中的一种与甲基丙烯磺酸钠、烯丙基聚氧乙烯醚聚合成共聚物主链，再由丙烯酸和甲基丙烯酸中的一种与乙二胺缩聚成超支化聚酰胺结构接枝到主链两端而成。其制备方法为：(1)将甲基丙烯磺酸钠用DMF配成溶液，在氮气气氛下加热；(2)将其余两种单体与引发剂溶于DMF中配成混合溶液，缓慢滴加到步骤(1)中，反应1～20h；(3)反应完毕加入缩合剂CDI，以N-甲基吗啉为有机碱，乙二胺和丙烯酸为单体，DMF为溶剂，进行缩合反应；(4)减压蒸馏除去剩余的单体和溶剂，用三氟乙酸的二氯甲烷溶液回流2～5小时，即得。本发明的超支化型聚羧酸盐减水剂具有掺量低、减水率高、坍落度损失小、与水泥相容性好、对钢筋无腐蚀性、抗冻能力强等优点。

Admixtures for Cement Compositions and Cement Compositions Containing the Same

시멘트 혼화재료는 시멘트 모르타르 또는 콘크리트와 같은 시멘트 조성물에 부가될 때, 시멘트 조성물의 슬럼프 손실을 억제하고 그의 시공연도와 적용성을 향상시킨다. 이 혼화재료는 알켄일 에테르, 폴리알켄일 에테르 및 말레산 무수물로된 공중합체로 구성된다. Cement admixtures, when added to cement compositions such as cement mortar or concrete, suppress slump loss of the cement composition and improve its age and applicability. This admixture consists of a copolymer of alkenyl ether, polyalkenyl ether and maleic anhydride.

Concrete viscosity reducer and preparation method thereof

本发明提出了混凝土降粘剂，包括以下步骤：马来酸酐聚乙二醇酯(MAH‑PEG)溶液合成:在四颈烧瓶中加入聚乙二醇（PEG）500.0份，升温到50℃，开启搅拌，投入马来酸酐（MAH）86.0份，再依次加入对苯二酚0.1份、催化剂0.9份，升温至70‑80℃，不断搅拌下反应3‑4h，酯化反应停止，得到黄色或红色液体即为马来酸聚乙二醇酯(MAH‑PEG)溶液；混凝土降粘剂具有一定减水性能，降粘效果好，能够在低水胶比时，掺入混凝土中明显降低混凝土的粘度而不影响混凝土的流动性，提高泵送施工性能；混凝土降粘剂掺量低，性价比高于硅灰掺合料，并且对混凝土强度无负面影响；混凝土降粘剂与普通聚羧酸减水剂产品等混凝土外加剂复配，具有良好的相容性和稳定性，不会出现分层或絮凝现象。

It is sustained controllable type polycarboxylate superplasticizer mother liquor and preparation method thereof

本发明涉及缓释可控型聚羧酸减水剂母液及其制备方法，采用大单体TPEG、单酯类小单体、双酯类小单体、功能单体作为聚合单体，并将聚羧酸减水剂聚合物调节pH值至强碱性进行部分水解，从而实现聚羧酸减水剂母液缓释可控。

A kind of polycarboxylic admixture and preparation method thereof suitable for high temperature spray-drying

本发明公开了一种适用于高温喷雾干燥的聚羧酸外加剂及其制备方法。本发明所述外加剂由聚醚大单体a、羧酸单体b、功能单体c和含抗氧化基团的单体d通过自由基共聚而成，主要是通过在聚羧酸聚合物中引入抗氧化基团制得。本发明从改进聚合物结构出发，开发了一种适合高温喷雾的粉末状聚羧酸外加剂，可解决高温下聚合物易着火的现象，也能解决长时间高温储存粉末的稳定性问题。

Emulsifying polymers and their use

本発明は、乳化用ポリマーに関し、特に、水性コンクリート可塑剤中の疎水性添加剤の安定乳化のためのそのポリマーの使用に関する。

Process for the production of building elements used fly ash

The brick for building is produced by mixing 45-60 wt.% fly ash as aggregate source with 35-50 wt.% first chemical additive having of sodium silicate mixture and 2% cationic surfactant in the ratio of 1:2-3 at 60 rpm mixing speed changing direction of rotation at 1 minute intervals for 5-7 minutes, adding and mixing 5 wt.% second chemical additive solution having 20 % calcium dehydrate at 80 rpm mixing speed in the same way as above for 10 minutes, moulding, heating at the rate of 10 deg.C per 1 minute, curing at 250 deg.C for 10 hours, cooling at the same rate.

Preparation method of fluorine-containing shrinkage-reduction type polycarboxylate superplasticizer

本发明公开了一种含氟减缩型聚羧酸减水剂的制备方法，具体步骤如下：1)聚羧酸减水剂预聚体的制备：将含羰基不饱和单体、不饱和酸类单体与不饱和大单体在引发剂、还原剂和链转移剂的作用下，进行氧化‑还原自由基聚合反应得到含有羰基的聚羧酸减水剂预聚体；2)含氟减缩型聚羧酸减水剂的制备：含羰基的聚羧酸减水剂预聚体与Prakash试剂(TMSCF 3 )进行亲核取代反应得到含氟减缩型聚羧酸减水剂。本发明制备的含氟减缩型聚羧酸减水剂能显著降低表面张力，提高水泥的分散性，在高减水的前提下又具有高的减缩性能，与水泥的适应性好，且用于混凝土时具有较低的含气量，有效增加混凝土的体积稳定性，减小收缩开裂，提高混凝土结构的耐久性和服役寿命。

Dispersing preparation, containing mixture of polymers

FIELD: chemistry. SUBSTANCE: invention relates to a composition of polymers, used as a component of a dispersing preparation, its obtaining and application. Claimed is the composition for application as the dispersing preparation, containing 5-95 wt % of a copolymer H and 2-60 wt % of a copolymer K, the copolymers H and K each has polyether macromonomer structural elements and acidic monomer structural elements, present in the copolymers H and K in each case in a molar ratio from 1:20 to 1:1, and at least 20 mol. % of all structural elements of the copolymer H and at least 25 mol. % of all the structural elements of the copolymer K are present in each case in the form of the acidic monomer structural elements. Polyether macromonomer structural elements of the copolymer H, which has side chains, contain in each case at least 5 oxygen atoms of ether, with a number of oxygen atoms of ether per the side chain of the polyether macromonomer structural elements of the copolymer H changing in such a way that a respective diagram of distribution of occurrence frequencies, in which the number of oxygen atoms of ether per the side chain of the polyether macromonomer structural element is plotted along the abscissa axis, and combined frequency for the copolymer H is plotted along the ordinate axis, contains at least two maximums. A method of obtaining the said composition, its application and based on it dispersing preparation is also claimed. EFFECT: dispersing preparation based on the claimed composition is economical, makes it possible to obtain effective binding agents, used as a superplasticiser for concrete. 92 cl, 2 tbl, 3 ex РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (51) МПК C08L 33/02 C08L 29/10 C08L 35/08 B01F 17/44 C04B 24/24 (13) 2 531 083 C2 (2006.01) (2006.01) (2006.01) (2006.01) (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ (21)(22) Заявка: ИЗОБРЕТЕНИЯ К ПАТЕНТУ 2011127906/04, 25.11.2009 (24) Дата начала отсчета срока действия патента: 25. ...

Water-soluble graft polymers and production process thereof

A process for producing a water-soluble graft polymer, which includes the steps of: (1) preparing (A) a polyether compound including 80 mol % or more of ethylene oxide as a constituent unit and having a number-average molecular weight of 200 or more and (B) a monomer component including (bl) 40 to 100 mol % of (meth)acrylic acid and (b2) 0 to 60 mol % of another copolymerizable monoethylenically unsaturated monomer; and then (2) carrying out graft polymerization of the monomer component (B) upon the polyether compound (A) by mixing the monomer component (B) with the polyether compound (A) at 100 °C or higher in the presence of a polymerization initiator using substantially no solvent. In this reaction, the amount grafted of the monomer component (B) is approximately 25 wt. % per 100 wt. % of the polyether compound (A) or larger.

Copolymers based on unsaturated mono- or dicarboxylic acid derivatives and oxyalkylene glycol alkenyl ethers, process for their preparation and their use

The invention relates to copolymers which are based on mono or dicarboxylic acid derivatives, oxyalkylene glycol alkenyl ethers, vinyl polyalkylene glycol-, polysiloxane- or ester compounds in addition to the use thereof as additives for aqueous suspensions based on mineral or bituminous binding agents. The copolymers provide aqueous building material suspensions with excellent processing properties even in the smallest of doses without inhibiting resistance. The drastic reduction of the water/binding agent content achieved by the use of the inventive copolymers results in highly flowable building materials without any segregation of individual constituents in said building material mixture.

Copolymers based on unsaturated mono- or dicarboxylic acid derivatives and oxyalkylene glycol alkenyl ethers, method for the production and use thereof

The invention relates to copolymers which are based on mono or dicarboxylic acid derivatives, oxyalkylene glycol alkenyl ethers, vinyl polyalkylene glycol-, polysiloxane- or ester compounds in addition to the use thereof as additives for aqueous suspensions based on mineral or bituminous binding agents. The copolymers provide aqueous building material suspensions with excellent processing properties even in the smallest of doses without inhibiting resistance. The drastic reduction of the water/binding agent content achieved by the use of the inventive copolymers results in highly flowable building materials without any segregation of individual constituents in said building material mixture.

POLYMER DISPERSANT AS A FLUIDIZING AGENT OF HYDRAULIC BINDER COMPOSITIONS AND PROCESS FOR PREPARATION

Shrinkage-reducing polycarboxylate superplasticizer and preparation method and application thereof

本发明涉及水泥混凝土用减缩型聚羧酸减水剂技术领域，尤其涉及一种减缩型聚羧酸减水剂及其制备方法和应用。本发明提供的制备方法，包括以下步骤：将不饱和羧酸、不饱和羧酸羟基酯、不饱和聚氧乙烯醚、水、分子量调节剂和引发剂混合，发生聚合反应，得到固体共聚合产物；将所述固体共聚合产物、汞盐、低级烯烃和有机溶剂混合，发生烷氧汞化反应，得到烷氧汞化产物；在所述烷氧汞化产物中滴加硼氢化钠‑氢氧化钠水溶液，发生脱汞反应，得到所述减缩型羧酸减水剂。所述制备方法无需共聚减缩型功能单体，仍然能够保留原有的减水功能，大大提高了工作能效，丰富了聚羧酸减水剂的种类及其在混凝土中的应用。

Preparation method of cardanol modified ester polycarboxylate superplasticizer

本发明公开了一种腰果酚改性酯类聚羧酸减水剂的制备方法，包括如下步骤：(1)制备腰果酚改性功能混合物；(2)共聚反应；(3)中和反应。本发明中的腰果酚改性功能混合物有效成分为一种可聚合的两性型表面活性剂，使得聚羧酸分子链上带有阴离子、阳离子和长疏水碳链，可使加入减水剂的混凝土的保坍性能增加，早期强度提高，改善混凝土和易性，降低减水剂对混凝土材料的敏感度。

Copolymers based on unsaturated monocarboxylic or dicarboxylic acid derivatives and oxyalkylene glycol alkenyl ethers, process for preparing them and their use

本发明描述了基于不饱和单－或二羧酸衍生物、氧化烯二醇链烯基醚以及任选乙烯基聚亚烷基二醇或者酯化合物的共聚物及其在基于矿物或者沥青粘结剂，尤其是水泥、石膏、石灰、硬石膏或者其它硫酸钙基粘结剂和基于粉末分散体粘结剂的含水悬浮液中作为添加剂的用途。本发明所述的共聚物使该含水粘结剂悬浮液分散非常好并且具有液化作用同时加工性能优异。而且，本发明所述的氧化烯二醇链烯基醚工业上制备相对简单并且制备成本低以及共聚所需引发剂浓度相对低。

Method of producing complex addition for concrete mixture

FIELD: building materials. SUBSTANCE: at first method involves the presulfonation process of phenol waste with 1/20-1/10 part of sulfonating agent at 120-150 C for 0.5-0.9 h in air medium under vacuum 75-250 mm Hg up to removal 50-75% of volatile substances from the reaction zone or in medium of gaseous nitrogen at its specific consumption 1.5-2.5 m 3 /h per m 3 of reaction mass volume followed by the sulfonation stage in the presence of measured amount of sulfonating agent. After sulfonation the reaction mass is diluted with water up to concentration 40-50% and thermocatalytic polycondensation is carried out for 0.8-2.5 h under excessive pressure 0.2-1.2 atm and 80-130 C followed by dilution of the reaction mass up to concentration 20-35% (by dry matter), neutralization of an acid oligomer with 10-30% sodium, potassium or calcium hydroxide an aqueous solution to pH 6-8 at 40-80 C and modification of the obtained neutralized mass at 40-80 C and pH 6-8. Method ensures to obtain high-effective complex addition that can be used in concrete mixture, technology of concrete and ferroconcrete articles making. Method provides the increase of strength, hardiness and sulfate-resistance of ready concrete by 10-20, 17-25 and 8-12%, respectively, as compared with the known method. EFFECT: improved method of producing, improved properties of concrete articles. 2 cl, 5 tbl, 6 ex зЗОосссгс пы Го РОССИЙСКОЕ АГЕНТСТВО ПО ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ (19) (51) МПК ВИ "” 2 132 308. С 04 В 26/00//(С 04 В 26/00, 13) СЛ 24:22), 28/02 12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ РОССИЙСКОЙ ФЕДЕРАЦИИ (21), (22) Заявка: 96123604/04, 15.12.1996 (46) Дата публикации: 27.06.1999 (56) Ссылки: КУ 2061665 СЛ, 10.06.96. КУ 2039720 СЛ, 20.07.95. КУ 2066330 СЛ, 10.09.96. КУ 2054401 СЛ, 20.02.96. Паулс К.Ф. и др. Нефтепереработка и нефтехимия, 1986, МЗ, с.20. (98) Адрес для переписки: 111524, Москва, ул.Плеханова, 7, ВНИИЖЕЛЕЗОБЕТОН (71) Заявитель: Всероссийский федеральный научно-исследовательский и проектно- ...

Cement dispersant agent and cement compsn. using same

本发明提供了一种以很少的添加量就能呈现出很高分散性,即使在高减水率领域内也能发挥优良分散性的水泥分散剂及使用它的水泥组合物。所述第一种水泥分散剂含有作为必须成分的以下的共聚物,该共聚物含有来自以下述一般式(1)所示不饱和(聚)烷撑二醇醚系单体(a1)的构成单元(I－1),和来自下述一般式(2)所示不饱和单羧酸系单体(b1)的构成单元(II－1),而且,上述构成单元(II－1)至少含有来自丙烯酸(盐)的构造。水泥组合物含有作为必须成分的上述水泥分散剂、水泥和水。

Concrete mixture which yields concrete having high strength at varying desity, method for producing the mixture and the concrete, and use of an anionic additive

本发明涉及气孔体积为10-85%、优选为20-85%的含水混凝土拌和物，当养护时，获得具有均匀密度和较高强度的混凝土。其通过使用含有两个磺酸基的通式(I)为(R) m -R 1 -(SO 3 M) 2 的水溶性阴离子表面活性化合物来实现，式中，R是4-20个碳原子的脂族基，m是1或2，在一个或多个R基团中碳原子的总数是6-30，R 1 是含有至少两个芳香环和10-20个碳原子的芳香基，而M是阳离子或氢。阴离子化合物具有引气效果并改善混凝土拌和物的均质性。

Cracking resistance reinforcing type polycarboxylic acid water-reducing agent and its preparation process

本发明公开了一种混凝土抗裂增强型聚羧酸高性能减水剂，通过酯化反应和自由基聚合反应等步骤制备；从减小混凝土溶液表面张力出发，在聚羧酸减水剂的分子结构中引入抗裂功能基团，有效降低混凝土的收缩，改善混凝土的收缩开裂；本发明的抗裂增强型聚羧酸高性能减水剂使水泥胶砂的28d干燥收缩减少了20%～30%，28d抗压强度增加了7～11MPa，抗折强度增加了0.3～0.6MPa。

Method of preparing chemical additive for cements used in cast-in- place concretes

FIELD: manufacture of building materials. SUBSTANCE: invention relates to chemical additives for controlling properties of cement-sand mixes, concrete mixes, and concretes for use in producing cast-in-place concretes. Additive is based on sodium alkylarylsulfonate obtained by sulfonation of non-rectified heavy pyrolysis resin with spent sulfuric acid followed by neutralization of sulfonation reaction mixture with sodium hydroxide. Aqueous solution of sodium alkylarylsulfonate is further used to impregnate carbonate slime, which is fine mineral powder precipitated in processes of reagent treatment of industrial waste waters and water treatment at chemical and power generation enterprises, proportion of sodium alkylarylsulfonate is 10% of the weight of indicated slime. Impregnated slime is held at ambient temperature during 2 h and dried at 90°C. EFFECT: essentially improved rheological characteristics in all stages of hardening of cement, cement-sand mixes and also improved physicochemical properties of cement-sand samples. 3 tbl, 2 ex ÐÎÑÑÈÉÑÊÀß ÔÅÄÅÐÀÖÈß (19) RU (51) ÌÏÊ 7 (11) 2 258 050 (13) C2 C 04 B 28/00//(C 04 B 28/00, 24:16), 103:30 ÔÅÄÅÐÀËÜÍÀß ÑËÓÆÁÀ ÏÎ ÈÍÒÅËËÅÊÒÓÀËÜÍÎÉ ÑÎÁÑÒÂÅÍÍÎÑÒÈ, ÏÀÒÅÍÒÀÌ È ÒÎÂÀÐÍÛÌ ÇÍÀÊÀÌ (12) ÎÏÈÑÀÍÈÅ ÈÇÎÁÐÅÒÅÍÈß Ê ÏÀÒÅÍÒÓ (21), (22) Çà âêà: 2003121622/03, 14.07.2003 (72) Àâòîð(û): Ãîðþõèí Ä.À. (RU), Ñàáëóêîâà È.Â. (RU), Êîðåíüêîâà Ñ.Ô. (RU) (24) Äàòà íà÷àëà äåéñòâè ïàòåíòà: 14.07.2003 (43) Äàòà ïóáëèêàöèè çà âêè: 10.01.2005 2 2 5 8 0 5 0 (56) Ñïèñîê äîêóìåíòîâ, öèòèðîâàííûõ â îò÷åòå î ïîèñêå: RU 2145947 C1, 27.02.2000. RU 2177920 C2, 10.01.2002. RU 2088548 C1, 27.08.1997. SU 908765 A, 28.02.1982. US 5997631 A, 07.12.1999. ÃÎÑÒ 101890-90. Áåòîíû. Ìåòîäû îïðåäåëåíè ïðî÷íîñòè íà êîíòðîëüíûõ îáðàçöàõ. (73) Ïàòåíòîîáëàäàòåëü(ëè): Ãîñóäàðñòâåííîå îáðàçîâàòåëüíîå ó÷ðåæäåíèå âûñøåãî ïðîôåññèîíàëüíîãî îáðàçîâàíè "Ñàìàðñêèé ãîñóäàðñòâåííûé àðõèòåêòóðíîñòðîèòåëüíûé óíèâåðñèòåò" (ÑÃÀÑÓ) (RU) R U (45) Îïóáëèêîâàíî: 10.08.2005 Áþë. ¹ 22 Àäðåñ äë ...

Powdery polycarboxylic-acid cement dispersant and dispersant composition containing the dispersant

본 발명은 폴리아미드 폴리아민을 중합체 골격으로 함유하는 분말상 폴리카르본산계 시멘트 분산제로, 감수성(water amount reduction), 슬럼프 플로우(Slump flow)의 지속성, 콘크리트의 강도 발현성을 개량시킬 수 있다는 효과를 갖는 동시에, 블로킹이 효과적으로 방지될 수 있으며, 또한, 슬러리(slurry)로의 용해성이 뛰어날 뿐만 아니라, 무기 분체와 균일 혼합될 수 있는 분산제 및 상기 분산제를 함유하는 분산제 조성물을 제공한다. The present invention is a powdered polycarboxylic acid-based cement dispersant containing a polyamide polyamine as a polymer backbone, and has an effect of improving water amount reduction, slump flow persistence, and strength strength of concrete. At the same time, the blocking can be effectively prevented, and the dispersant and the dispersant composition containing the dispersant which not only have excellent solubility in slurry but also can be uniformly mixed with the inorganic powder are provided. 본 발명은 폴리아미드 폴리아민을 중합체 골격으로 함유하는 공중합체의 용액 또는 분산액을 건조 분말화하여 얻어진 분말상 시멘트 분산제로 이루어지는 동시에, 상기 분말은 구 형상을 이루며, 30∼300㎛의 평균 입경 및 입경 50∼350㎛의 입자가 전 중량에 대해 70％ 이상을 차지하는 입도 분포를 갖는 것을 특징으로 한다. The present invention comprises a powdered cement dispersant obtained by dry powdering a solution or dispersion of a copolymer containing a polyamide polyamine as a polymer backbone, while the powder has a spherical shape, with an average particle diameter of 30 to 300 µm and a particle diameter of 50 to It is characterized by having a particle size distribution in which the particles of 350 mu m occupy 70% or more by weight. 폴리아미드 폴리아민, 중합체, 분말상, 폴리카르본산계, 시멘트, 분산제, 조성물 Polyamide polyamine, polymer, powder, polycarboxylic acid, cement, dispersant, composition

Method for preparing high-solid content polycarboxylate superplasticizer

本发明公开了一种高固含聚羧酸减水剂的制备方法，步骤包括a）、将不饱和聚氧乙烯醚单体加入底水中配制成60—75%浓度在20—40℃下提前搅拌预溶解，待溶解后将底料泵送至反应釜中；b）、在反应釜搅拌状态下一次性加入浓度为25—30%的双氧水溶液；c）、将链转移剂与还原剂配制成4—10%的混合溶液，缓慢滴加于上述反应釜中，15min后开始滴加单体A、单体B配制成的混合溶液，其中单体A、单体B混合溶液浓度为60—75%；d）、滴加结束，保温老化1h，加入浓度为30—40%的碱溶液调整产物为中性，即可泵送至母液储罐。本发明采用无热源的常温反应生产得到的高固含聚羧酸减水剂，固含量可达50—63.4%，相对于传统40%固含聚羧酸减水剂，生产效率明显提高，可提高储存效率。

DISPERSING AGENT CONTAINING A MIXTURE OF COPOLYMERS

1. Композиция полимеров, содержащая 5-95 мас.% сополимера Н и 2-60 мас.% сополимера K, сополимеры Н и K каждый имеют полиэфирные макромономерные структурные элементы и кислотные мономерные структурные элементы, которые присутствуют в сополимерах Н и K в каждом случае в молярном соотношении от 1:20 до 1:1, и по меньшей мере 20 мол.% всех структурных элементов сополимера Н и по меньшей мере 25 мол.% всех структурных элементов сополимера К присутствуют в каждом случае в форме кислотных мономерных структурных элементов, полиэфирные макромономерные структурные элементы сополимера Н, имеющего боковые цепи, содержат в каждом случае по меньшей мере 5 кислородных атомов эфира, число кислородных атомов эфира на боковую цепь полиэфирных макромономерных структурных элементов сополимера Н изменяется таким способом, что соответствующая диаграмма распределения частот встречаемости, в которой число кислородных атомов эфира на боковую цепь полиэфирного макромономерного структурного элемента нанесена вдоль оси абсцисс и объединенная частота для сополимера Н нанесена вдоль оси ордината, содержит по меньшей мере 2 максимума, чьи значения абсциссы отличаются больше чем на 8 кислородных атомов эфира друг от друга, все полиэфирные макромономерные структурные элементы сополимера K имеют или боковые цепи с большим числом кислородных атомов эфира, или альтернативно боковые цепи с небольшим числом кислородных атомов эфира, боковые цепи с большим числом кислородных атомов эфира будут такими боковыми цепями, которые в каждом случае имеют больше кислородных атомов эфира, чем суммарное среднее арифметическое кислородных атомов эфира на боко� РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (51) МПК C08L 33/02 (13) 2011 127 906 A (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ЗАЯВКА НА ИЗОБРЕТЕНИЕ (21)(22) Заявка: 2011127906/05, 25.11.2009 (71) Заявитель(и): КОНСТРАКШН РИСЕРЧ ЭНД ТЕКНОЛОДЖИ ГМБХ (DE) Приоритет(ы): (30) Конвенционный приоритет: 08.12.2008 EP 09170969.3 (85) Дата начала ...

Viscosity-reducing polycarboxylic acid water reducer and preparation method thereof

本发明提供了一种降粘型的聚羧酸系减水剂及其制备方法，属于混凝土外加剂技术领域。技术方案为所述减水剂本质上是由不饱和聚氧化乙烯乙二醇醚类大单体、不饱和酸单体和含酯基改性单体在氧化还原体系和链转移剂的作用下共聚而成，其中含酯基改性单体为水杨酸和顺丁烯二酸酐的酯化物。本发明合成的降粘型的聚羧酸系减水剂工艺简单、成本低、易于操作，具有良好的分散性和分散保持性，满足长距离运输的需要；应用于高性能混凝土中时降粘效果明显，能够有效降低高标号混凝土粘度，提高混凝土坍落度保持性，改善混凝土流变性能和工作性能，尤其适用于配制高强、超高强、自密实混凝土。此外，对不同水泥和骨料具有广泛适应性。

Process for the preparation of building materials using slag

The ceramic sintered building material having 7 GPa Vicker's hardness and 0.2 micrometer mean surface roughness is manufactured by (a) preparing slag in the weight ratio of 2.5-5.0 calcium oxide and magnesium oxide to 1.0 alumina and silica, (b) pulverizing slag and controlling the particle size in the range of 30-45 wt% 1.0-8.0 mm particles and 15-35 wt% less than 0.1 mm particles, (c) removing iron and dressing slag to include below 1.0 wt% residual iron, (d) hydrating the dressed slag in the weight increment rate of below 1.0 wt%, after treating the dressed slag with the pressure of 2 kg/cm2 for 2 hrs in the autoclave, (e) mixing 60-80 wt% the hydrated slag, 20-40 wt% portland cement including 0.2-4.0 wt% naphthalene sodium sulfonate, and water, (f) molding the mixture in the mold for 48 hrs. and curing the molded body for 72 hrs. in air after releasing the body from the mold.

A kind of preparation method of the polycarboxylate water-reducer of high-molecular-weight poly ether monomer synthesis

本发明提出了一种高分子量聚醚单体合成的聚羧酸减水剂的制备方法，选用高分子量的聚醚单体与羧酸单体在氧化还原体系的引发剂和链转移剂作用下合成，其兼具优良的减水性能和保坍性能，并且工艺条件无需升温，能耗低，节约生产成本。

Polycarboxylate superplasticizer special for self-compacting concrete and preparation method thereof

本发明提供了一种自密实混凝土专用聚羧酸减水剂及其制备方法，解决了现有技术中的减水剂不具备保塌效果，在进行复配时需要加入大量的保塌剂，复配成本偏高的技术问题。它由下述重量份的原料合成：甲基烯丙基聚氧乙烯醚300‑360份；丙烯酸28.7‑37份；衣康酸6份；催化剂0‑2.2份；还原剂0.4‑1.5份；氧化剂2.7‑3.2份；水417.8‑605份。本发明在保证高减水率的同时，还具有一定时间的保塌效果；降低了保塌剂加入量，降低了施工成本；还具有良好的胶砂流动度，且应用浇筑试块表面无麻窝面，表面均匀。

Preparation method and application of viscosity-reducing polycarboxylate superplasticizer

本发明提供了一种降粘型聚羧酸减水剂的制备方法及其应用，所述降粘型聚羧酸减水剂在保证高减水、高保坍的前提下，还能大幅降低混凝土的粘度，并且该制备方法具有工艺简单、成本低、污染小等优点。所述制备方法是由特定的不饱和酸单体、特定的不饱和聚醚大单体与N?(4?乙烯基苄基)?N,N?二烷基胺按摩尔比(2.5～6.5):1:(0.05～0.2)进行自由基共聚反应而得到降粘型聚羧酸减水剂。

Concrete mix

FIELD: concrete mixes including superdiluting additive for concrete operations. SUBSTANCE: concrete mix includes portland cement, fillers and superdiluting additive-reaction product of steam cracking at 90-120 C for 0.5-3 h of oil raw material with liquid or gaseous sulfuric anhydride at their molar ratio of (0.66- 1.45):1, respectively, with subsequent removal of sulfur dioxide. Water-to-portland cement mass ratio is (0.43-0.45):1; portland cement-to- fillers mass ratio is 1:5, and amount of superdiluting additive, as calculated for organic sulfonate, amounts to 0.69-1.4% of portland cement mass. Workability of concrete mix is increased by 35% as compared with reference one, and compression strength is up to 488 kg/sq.cm. EFFECT: higher efficiency. 1 tbl СбУЗУОС ПЧ Го РОССИЙСКОЕ АГЕНТСТВО ПО ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ (19) (51) МПК ВИ “” 2045 493 ' С 04В 28/04//(С 04 В 28/04, 13) СЛ 24:22) 12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ РОССИЙСКОЙ ФЕДЕРАЦИИ (21), (22) Заявка: 4614236/05, 12.05.1989 (30) Приоритет: 13.05.1988 [Т 20.562 А/88 (46) Дата публикации: 10.10.1995 (56) Ссылки: Патент США М 3277162, кл. 260 - опублик. 1971.Авторское свидетельство СССР М 1070136, кл. С ОТС 139/06, 1981. 505, (71) Заявитель: Эниричерке С.п.А. (ТТ), Снампрогетти С.п.А. (ТТ) (72) Изобретатель: Альдо Преведелло[П], Эдоардо Платоне[!], Дарио Эрколани[1Т], Элио Донати[П] (73) Патентообладатель: Эниричерке С.п.А. (1Т), Снампрогетти С.п.А. (ТТ) (54) БЕТОННАЯ СМЕСЬ (57) Реферат: Область использования: бетонная смесь, включающая суперразжижающую добавку для бетонных работ. Сущность изобретения: бетонная смесь, включающая портландцемент, заполнители и суперразжижающую добавку продукт реакции парового крекинга при 90-120°С в течение 0,5-3 ч нефтяного сырья с жидким или газообразным серным ангидритом при их молярном соотношении 0,56-1,45:1 соответственно с последующим удалением двуокиси серы, причем массовое соотношение воды к портландцементу составляет 0,43-0,45:1, массовое соотношение портланцемента ...

Method of synthesis of water-soluble sulfonated dispersers

FIELD: chemical technology. SUBSTANCE: method involves interaction of sulfur trioxide with aromatic fractions at mass ratio (0.8-1.5):1 at 5-45 C in the presence of sulfur dioxide. After sulfur dioxide removal sulfonation product is heated to 70-110 C and kept at this temperature for 10-200 min. Stages of interaction, sulfur dioxide removing, heating and keeping are carried out under conditions providing grinding and the forced moving the sulfonation solid product. Stage of oxidative oligomerization is carried out without solvent using. EFFECT: improved method of synthesis. 7 cl, 2 tbl соо гс пы Го РОССИЙСКОЕ АГЕНТСТВО ПО ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ (19) ВИ "” 2417 003 ' 13) СЛ ОМК С 07С 303/06, В ОЛЕ 17/12 12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ РОССИЙСКОЙ ФЕДЕРАЦИИ (21), (22) Заявка: 94008620/04, 14.03.1994 (30) Приоритет: 19.03.1993 11 М3 А 000520 (46) Дата публикации: 10.08.1998 (56) Ссылки: СВ, заявка, 2159536, кл. С 10 С 304, 1989, ЕР, заявка, 3791749, кл. С 07 С 303/06, 1990. (71) Заявитель: Эниричерке С.П.А. (1Т), Снампрогетти С.П.А. (1Т) (72) Изобретатель: Армандо Маркотуллио (1!Т), Энрико Боргарелло (1Т), Роберто Тротга (ГГ), Элио Донати (1Т) (73) Патентообладатель: Эниричерке С.П.А. (1Т), Снампрогетти С.П.А. (1Т) (54) СПОСОБ ПОЛУЧЕНИЯ ВОДОРАСТВОРИМЫХ СУЛЬФИРОВАННЫХ ДИСПЕРГАТОРОВ (57) Реферат: Для получения водорастворимых сульфированных диспергаторов проводят взаимодействие триоксида серы С ароматическими фракциями при массовом соотношении 0,8-1,5:1 и температуре 5 - 45°С в присутствии диоксида серы. После удаления диоксида серы продукт сульфирования нагревают до температуры 70 - 110°С и выдерживают при этой температуре от 10 до 200 мин. Стадии взаимодействия, удаления диоксида серы, нагревания и выдерживания проводят в условиях, обеспечивающих измельчение и принудительное поддерживание движения твердого продукта сульфирования. 6 з.п. ф-лы, 2 табл. 2117003 С1 КО соо гс пы Го КУЗЗАМ АСЕМСУ ГОК РАТЕМТ$ АМО ТКАОЕМАКК$ (19) ВО "’ 2117 003 ” С1 ОО” © 07С 303/06, В ...

Cyclic micro-crosslinkable polycarboxylic acid polymerization intermediate, preparation method thereof and polycarboxylic acid water reducing agent

本发明涉及混凝土外加剂技术领域，具体公开了一种环状可微交联聚羧酸聚合中间体的制备方法，包括以下步骤：将多元醇及有机溶剂加入反应器中，搅拌均匀后加入缚酸剂，通入氮气保护，在0~5℃条件下，滴加不饱和酰氯反应1~8h，用饱和盐溶液进行萃取得到萃取物，然后将萃取物减压蒸馏蒸发有机溶剂，得到环状可微交联聚羧酸聚合中间体。本发明利用多元醇与不饱和酰氯直接高效酯化得到环状可微交联聚羧酸聚合中间体，将制得中间体应用于羧酸聚合，得到带环状结构且分子链微交联的聚羧酸减水剂，降低羧酸对泥土的敏感性，提高聚羧酸减水剂的保水性，增强对水泥的分散能力，降低对水的敏感度，提高抗离析泌水性能。

Improved cement compositions capable of exhibiting inhibition to slump loss with respect to time

一种能抑制根据时间的坍落度损失的改进的水泥组合物，该组合物含有水硬性的水泥、集料、水和一种水泥组合物外加剂，这种外加剂由链烯基醚，聚链烯基醚，和马来酸酐的共聚物组成。

Concrete mix

Изобретение относитс  к промышленности строительных материалов, а именно к составам бетонных смесей, содержащих пластифицирующие добавки. Целью изобретени   вл етс  повышение морозостойкости бетона. Бетонна  смесь содержит в качестве пластифицирующей добавки натриевую соль 1,2 нафтохинон-4-сульфокислоты. Состав бетонной смеси, мас.% : портландцемент 10-25, крупный заполнитель 42,6-51,595, мелкий заполнитель 22,2-33,4, натриева  соль 1,2-нафтохинон-4-сульфокислоты 0,005-0,2, вода 5-10. Бетон из указанной бетонной смеси выдерживает не менее 300 циклов попеременного замораживани  и оттаивани . 2 табл. The invention relates to the building materials industry, namely to the composition of concrete mixtures containing plasticizing agents. The aim of the invention is to increase the frost resistance of concrete. The concrete mix contains sodium naphthoquinone-4-sulfonic acid as a plasticizer. The composition of the concrete mixture, wt.%: Portland cement 10-25, coarse aggregate 42.6-51,595, fine aggregate 22.2-33.4, sodium salt 1,2-naphthoquinone-4-sulfonic acid 0.005-0.2, water 5 -ten. Concrete from the specified concrete mixture can withstand at least 300 cycles of alternate freezing and thawing. 2 tab.

Preparation method and application of powdery polycarboxylate superplasticizer

本发明公开了一种粉末状聚羧酸减水剂的制备方法及应用。本发明所述制备方法包括：由羧酸单体a、含苯环小单体b、含苯环聚醚单体c在水性介质中通过自由基共聚反应制备，得到聚羧酸减水剂母液；将所述聚羧酸减水剂母液，直接通过喷雾机的离心式雾化器形成雾滴，无需添加隔离剂，控制粉末的平均粒径在50‑150um，雾滴进入干燥室后干燥成粉末，通过引风机将物料引到出料口，采用袋装包装机包装出料，得到粉末状聚羧酸减水剂。本发明制备方法既提高了粉末中聚合物的有效含量，又减化了生产工艺流程，降低了生产成本；制得的粉剂流动性佳，不结块，储存稳定性好，长距离运输成本低，减水性能优异，适用于各种干粉砂浆。

Copolymers suitable for plasticization of inorganic binder systems

FIELD: chemistry. SUBSTANCE: present invention relates to copolymer, a building chemical composition, and the use of copolymer. This copolymer includes structural links of the formula and structural links having free side chains with a simple polyester function selected from links of formulas: and . The building chemical composition includes this copolymer and a geopolymer binder. This copolymer is used as dispersant for geopolymer binders. EFFECT: obtaining copolymers having effective plasticization of inorganic binder systems; copolymers also allow reducing water content in inorganic binder systems without reducing fluidity and processability of building compositions. 9 cl, 3 tbl, 7 ex РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (51) МПК C08F 216/14 C08F 290/06 C04B 24/26 C04B 28/00 C04B 28/08 (11) (13) 2 759 766 C2 (2006.01) (2006.01) (2006.01) (2006.01) (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК C08F 216/14 (2020.08); C08F 290/06 (2020.08); C04B 24/26 (2020.08); C04B 28/00 (2020.08); C04B 28/08 (2020.08) (21)(22) Заявка: 2019113344, 29.09.2017 29.09.2017 Дата регистрации: Приоритет(ы): (30) Конвенционный приоритет: 12.10.2016 EP 16193509.3 (43) Дата публикации заявки: 13.11.2020 Бюл. № 32 (56) Список документов, цитированных в отчете о поиске: EP 0 323 521 A1, 12.07.1989. RU 2 443 648 C2, 27.02.2012. WO 2013/152963 A1, 17.10.2013. (45) Опубликовано: 17.11.2021 Бюл. № 32 (86) Заявка PCT: EP 2017/074733 (29.09.2017) C 2 C 2 (85) Дата начала рассмотрения заявки PCT на национальной фазе: 13.05.2019 (87) Публикация заявки PCT: 2 7 5 9 7 6 6 WO 2018/069062 (19.04.2018) R U 2 7 5 9 7 6 6 (73) Патентообладатель(и): КОНСТРАКШН РИСЕРЧ ЭНД ТЕКНОЛОДЖИ ГМБХ (DE) 17.11.2021 R U (24) Дата начала отсчета срока действия патента: (72) Автор(ы): КРАУС Александер (DE), ПУЛЬКИН Максим (DE), МИТКИНА Татьяна (DE) Адрес для переписки: 105082, Москва, пер. Спартаковский, 2, стр. 1, секция 1, этаж 3, ЕВРОМАРКПАТ (54) СОПОЛИМЕРЫ, ...

Modified mud retarder for concrete and preparing method thereof

本发明提出了一种混凝土用改性阻泥剂及其制备方法，甲基烯丙基聚氧乙烯醚3240wt％，引发剂0.20.4wt％，A料0.40.8wt％，B料12.8519.11wt％，底水2050wt％。制备方法，包括以下步骤：1)反应釜中进一部分底水，然后启动搅拌投入甲基烯丙基聚氧乙烯醚，升温至2025℃，待完全溶解后，缓慢向反应釜中加入引发剂，继续搅拌510分钟；2)然后向反应釜中分别滴加A料与B料，A料的滴加时间2.02.5小时，B料的滴加时间2.53.0小时，滴加过程中控制反应釜中的温度在45℃以下；3)待滴加完毕后，在3045℃保温1.52.0小时，然后将余下底水补齐即可。与市场常用混凝土减水剂有很好的相容性，可以复配使用，使得混凝土体系具有更好的流动性和保坍性。

Low-to-mid range water-reducing polymer with mixed polyoxyalkylene side chains

Methods for plasticizing cementitious mixtures having relatively high water/cement ratio (at least 0.40 or higher) are surprisingly improved in terms of dosage efficiency, compared to conventional “superplasticizer” polycarboxylate polymers, when the comb-type carboxylate copolymer is formed from two different polyether side chains having specifically selected monomer constituents.

Composite gypsum-free portland cement

The invention relates to mixed gypsumless Portland cement the application of which enables to achieve high initial and long-lasting strength. The cement contains 60 to 96.7 mass-% of gypsumless Portland cement clinker with a speci­fic surface of 350 to 550 m²/kg, 3 to 40 mass-% of ground latently hydraulic matter, such as granulated blast-fur­nace slag, light ash etc., these two components having been ground in the presence of 0.01 to 0.1 mass-% of a liquid milling admixture, advantageously with a syntheti­cal surface-active matter with wetting properties, and containing further 0 to 20 mass-% of fine amorphous SiO₂ and/or 0.1 to 3 mass-% of a sulfonated polyelectrolyte or ligninsulfonate, and from 0.5 to 6 mass-% of an alkali carbonate, hydrogen carbonate or hydroxide.

A kind of anti-mud polycarboxylate high performance water-reducing agent of sustained release cationic and preparation method thereof

本发明公开了一种缓释阳离子具有抗泥效果的聚羧酸系高性能减水剂及其制备方法。本发明以不饱和羧酸、聚醚大单体、阳离子不饱和单体、不饱和酯类、交联剂、链转移剂、氧化剂及还原剂为原料，在常温下，无热源成功合成了缓释阳离子型抗泥聚羧酸高性能减水剂。本发明在减水剂的分子结构中引入了长链酯类交联剂和阳离子不饱和单体，使该聚羧酸减水剂具有很好的缓释和抗泥效果，该减水剂掺量低，减水率高，具有优异的坍落度保持能力，对砂石含泥不敏感，且该工艺不需要额外的热源，常温即可进行，投资设备少，成本低，适宜大面积推广应用。

Preparation method of polycarboxylic acid workability regulator

本发明涉及一种聚羧酸系和易性调节剂的制备方法，其通过单体混合物的水溶液自由基聚合而获得所述和易性调节剂，所述单体混合物包括可聚合还原剂、不饱和酸、不饱和酯，所述可聚合还原剂具有叔氨基团和纤维素醚结构。本发明制备的聚羧酸系和易性调节剂能明显改善混凝土的包裹性、流动性，降低泌水离析现象，还能够提高混凝土的分散性和分散保持性。

Additive for construction material mixtures containing a fluid phase

Copolymer comprising 5-95 mol.% of a cationic structural unit (A), 5-55 mol.% of a macromonomer structural unit (B), 0-80 mol.% of a structural unit (C) and 0-80 mol.% of another structural unit (D), is claimed, where the structural unit (A) is an ammonium structural unit (I) or (II). Copolymer comprising 5-95 mol.% of a cationic structural unit (A), 5-55 mol.% of a macromonomer structural unit (B), 0-80 mol.% of a structural unit (C) and 0-80 mol.% of another structural unit (D), is claimed, where the structural unit (A) is an ammonium structural unit of formula (CH 2=CH-CH 2-N +>(R 1>)(R 2>)-CH 2-CH=CH 2) (I) or (-CH 2-C(R 1>)(CO-Y 1>-V 1>-R 2>)-) (X ->) (II). R 1> : H or CH 3; R 2> : N +>R 3>R 4>R 5>; R 3>-R 5> : H, aliphatic 1-20C-hydrocarbon, a cycloaliphatic 5-8C-hydrocarbon, 6-14C-aryl or polyethylene glycol; Y 1> : O, NH or NR 3>; V 1> : -(CH 2) x-, benzen-1,4-yl and/or cyclohexan-1,4-yl; x : 1-6; and X : halo, 1-4C-alkyl sulfate and/or 1-4C-alkyl sulfonate. An independent claim is included for a formulation comprising the copolymer and maximum 10, preferably 4-6.5 wt.% of optionally a setting retarder for calcium sulfate-based building material systems comprising chelating agent, i.e. complex forming agents such as EDTA, diethylenetriamine pentaacetate, phosphates, phosphonates, sugar, tartaric acid, succinic acid, citric acid, gluconate, maleic acid, polyacrylic acid or its salts and/or retardants.