1657 results about "Sulfamic acid" patented technology

PCT No. PCT/US97/06725 Sec. 371 Date Aug. 10, 1998 Sec. 102(e) Date Aug. 10, 1998 PCT Filed Apr. 21, 1997 PCT Pub. No. WO97/44314 PCT Pub. Date Nov. 27, 1997The instant invention is new compounds of Formula I their use as cerebrovascular agents in diseases such as stroke, peripheral vascular disease, restenosis, and as agents for regulating plasma cholesterol concentrations, for treating hypercholesterolemia and atherosclerosis, and for lowering the serum or plasma level of Lp(a). A pharmaceutical composition is also claimed.

The invention relates to an acidizing block remover suitable for a complex lithologic reservoir. The acidizing block remover suitable for the complex lithologic reservoir comprises the following components by weight: 0-12% of hydrochloric acid, 0-3% of ammonium bifluoride, 0-10% of sulfamic acid, 0-5% of fluoboric acid, 0-3% of boric acid, 0-4% of alcohol, 0-2% of triethanolamine, 3% of glacial acetic acid, 4.0-6.0% of corrosion inhibitor, 2.0-4.0% of mutual solvent, 0.5-1.0% of penetrating agent, 2.0% of clay stabilizer and 45-88.5% of water. The problems that the lithologic and physical property differences of oil fields are large, the oil fields are in staggered distribution, and the acidizing debugging construction effect of a common water injection well is not ideal are mainly solved. The acidizing block remover suitable for the complex lithologic reservoir can effectively corrode the strata minerals and obstruent, does not destroy a rock skeleton, can prevent secondary precipitation caused by sensitive mineral, improves the water absorbing capacity of the reservoir, and increases the daily increasing water injection rate of an average single-well measure.

Compounds and methods are provided for modulating in vitro and in vivo processes mediated by selectin binding. More specifically, selectin modulators and their use are described, wherein the selectin modulators that modulate (e.g., inhibit or enhance) a selectin-mediated function comprise particular glycomimetics linked to a member of a class of compounds termed BASAs (Benzyl Amino Sulfonic Acids).

The invention relates to a method for preparing novel sulfamic acid high-efficiency concrete water reducing agent, which is carried out according to the steps of: (1) hydroxymethylation: adding formaldehyde with the mass ratio of 3-6 with melamine into melamine solution, adjusting the pH value to be 10-12, and carrying out heat preservation for 1-5h at the temperature of 65-95 DEG C; wherein the formaldehyde is polyformaldehyde or 30-40% of formaldehyde water solution; (2) sulfonation: adding p-amino benzene sulfonic acid sodium with the mass ratio of 1-3 with melamine into the melamine solution treated by hydroxymethylation, maintaining the pH value to be 10-12, and keeping the temperature of 70-85 DEG C for 1-3h; (3) etherification reaction: adjusting the pH value to be 3.5-6, and reacting for 1-6h at the temperature of 70-95 DEG C; and (4) neutralization: adding alkali and adjusting the pH value to be 7-9. The high-efficiency concrete water reducing agent prepared by the method can be separately used when the solid doping quantity is 4%, has the water reducing rate of 24% and increases the later period strength of concrete to be 140%.

Described is a process of producing a concentrated liquid biocide formulation. Mixed together are (a) bromine chloride or bromine and (b) an aqueous solution of alkali metal salt of sulfamic acid having a pH of at least about 7, in amounts such that (i) the active bromine content of the solution is at least about 100,000 ppm (wt/wt), and (ii) the atom ratio of nitrogen to active bromine from (a) and (b) is greater than 1 when bromine is used and is greater than 0.93 when bromine chloride is used. Use of bromine chloride as the source of the active bromine in the process is preferred because in the resulting aqueous compositions, all of the bromine of the bromine chloride is made available as active bromine in solution. In other words, the chlorine of the bromine chloride is converted in the process to dissolved alkali metal chloride salt, thereby liberating all of the bromine in the biocidal composition as active bromine capable of providing biocidal activity.

Described are highly concentrated liquid biocidal solutions formed in water from (a) specified bromine sources (e.g., BrCl or mixtures of BrCl and Br2) and (b) alkali metal salt of sulfamic acid and/or sulfamic acid and alkali metal base, wherein the solution contains >160,000 ppm of active bromine. Solutions of this type have been found to have greater stability than a commercially-available solution made from the same components containing 148,600 ppm of active bromine. Also described are new, water-soluble, solid state biocidal products formed by removing the water from solutions made in water from (a) and (b) irrespective of the initial concentration of active bromine. Removal of water can be accomplished by flashing or distillation at reduced pressure or preferably by spray drying. Such solid state products are typically in the form of powders or small particles, but can be compacted into larger forms preferably with the aid of one or more suitable binding agents.

The invention relates to a water soluble compound potassium monopersulfate powdered disinfecting agent comprising sodium chloride, potassium monopersulfate, sulfamic acid, malic acid, lemon acid, sodium hexametaphosphate, sodium dodecanesulphonate and sodium silicate by weight percentage.

Provided is a cleaning agent for electronic materials, which enables very efficient advanced cleaning such that yield in the production of the electronic materials is improved and cleaning in a short period of time becomes possible, the cleaning agent having excellent cleaning power for fine-grained particles and organic matter and being able to reduce metallic contamination on the substrate. The cleaning agent for electronic materials comprises sulfamic acid (A), an anionic surfactant having at least one sulfonic acid group or a salt thereof in the molecule (B), a chelating agent (C), and water, wherein the pH at 25 C is preferably not more than 3.0 and the (B) is preferably a polymeric anionic surfactant (B1) having a weight average molecular weight of 1,000 to 2,000,000.

The invention discloses an acrylic modified epoxy resin emulsion and a preparation method thereof. The preparation method comprises the following steps of: mixing epoxy resin, fatty alcohol-polyoxyethylene ether and triphenylphosphine and reacting the mixture at the temperature of between 90 and 110 DEG C for 3 to 5 hours to obtain epoxy resin polyethenoxy ether monoester; controlling the temperature of the obtained epoxy resin polyethenoxy ether monoester within a range from 70 to 90 DEG C; adding sulfamic acid into the epoxy resin polyethenoxy ether monoester, reacting the two materials for 2 to 4 hours, adding aqueous solution of NaOH into the mixture for neutralizing and dispersing, and adjusting the pH to be 7 to 8 after the dispersion to obtain a reactive type anionic and nonionic epoxy resin emulsifier; and polymerizing the emulsifier with epoxy resin and acrylic acid series monomer emulsion to obtain stable environment-friendly acrylic grafted epoxy resin emulsion. The method avoids the influence of the emulsifier on storage stability and later-stage filming of the emulsion; and compared with pure acrylic emulsion, the obtained product has the advantages that the film has more superior wear resistance, adhesion and chemical resistance, and can be applied to metal corrosion-resistant paint, road mark paint, indoor and outdoor floor paint and the like.

A process for producing a bis(fluorosulfonyl)imide anion compound by substituting a bis(chlorosulfonyl)imide anion compound, obtained from sulfamic acid, chlorosulfonic acid, and a halogenating agent, with fluorine is used as a process for producing a fluorine compound for use, for example, in the synthesis of battery electrolytes and ionic liquids. According to the above process, the inclusion of impurities can be reduced, and a high-purity fluorine compound of a bis(fluorosulfonyl)imide compound can be efficiently produced at a high yield. A base catalyst can be used in the reaction for substituting the bis(chlorosulfonyl)imide anion with fluorine. The base catalyst is preferably a nitrogen-containing compound.

The present disclosure relates to hair-treatment compositions, which are particularly useful for repairing, strengthening, and protecting hair from damage. The hair-treatment composition include at least 0.5 wt. % of at least one amino acid or amino sulfonic acid, and/or a salt thereof, and optionally, at least 0.5 wt. % of at least one non-polymeric mono, di, or tricarboxylic acid, and/or a salt thereof. Additional components such as surfactants and water may also be included. The unique components of the hair-treatment compositions restructure the hair fibers and result in the hair exhibiting improved properties such as increased hair fiber strength, better discipline, and more curl definition.

The invention relates to a scale and rust remover used for cleaning main frame of central air-conditioner. It is characterized in that it comprises solid mixture and liquid inhibitor; said solid mixture comprises amidosulfonic acid, polyphosphinic acid chelating agent, silicofluoride scale and rust dissolution promotor, non-ionic surface activator aliphatic alcohol polyester penetrant, their weight proportions in order are as follows: 75%-85%, 5%-10%, 5%-10%, 1%-5%; said inhibitor is liquid and comprises hexamethylene tetramin, aniline and methyl azimido-benzene according to weight proportion of 2: 2: 1. Said inhibitor is added into acidic washing solution with its weight amount being 0.3% of that of water amount. The product can dissolve carbonate, silicate, sulfate and iron oxide, the descaling speed at room temperature is fast, and is increased within 60 Deg. C, the corrosive rate to metal is pretty low, and there is no acid mist and harmful gas generation during desaling process.

The invention discloses a blocking remover for a reservoir of an oil well. The blocking remover is applied to the technical field of oil extraction in an oil field, comprises an agent A and an agent B, and is characterized in that the weight percentage of the agent A is 25-35%; the weight percentage of the agent B is 65-75%; the agent A comprises the following components by weight: 45-50% of petroleum mixed xylene, 1-2% of nonyl phenol polyoxyethylene (4) ether, and the balance of 0# diesel oil; the agent B comprises the following components by weight: 6-10% of glacial acetic acid or sulfamic acid, 2-2.5% of ammonium bifluoride, 2% of ammonium chloride, 1-2% of citric acid, 1.5-2% of corrosion inhibitor 7801, 3-5% of tertiary butanol, 0.5-1% of octyl phenol polyoxyethylene (10) ether and the balance of water. The blocking remover has the following effects that: the agent A and the agent B are respectively prepared so as to be beneficial to storing the blocking remover for a long time, the agent A of the blocking remover has strong dissolving capacity on crude oil heavy components, such as wax colloid asphalt, and the washing oil efficiency on oil sand is more than 90%. The dissolving rate of the agent B of the blocking remover on carbonate is more than 80%, and the corrosion speed on N80 steel is low and is smaller than 2 g/m<2>.h.

The invention relates to a production process for electroplated abrasive material on the surfaces of a metal wire. The production process comprises the following steps: 1. carrying out chemical nickel plating treatment on the surface of a diamond; 2. preparing impactive nickel electroplating solution; 3. preparing sulfamic acid nickel plating solution and nickel-plated diamond mixed electroplating solution; 4. cleaning; 5. carrying out impactive nickel electroplating; 6. electroplating the nickel-plated diamond on the surface of the metal wire; 7. reinforcing nickel-plated diamond granules; and 8. carrying out post-electroplating treatment. The invention employs the diamond and the metal wire the surfaces of which are chemically nickel-plated as raw materials, and realizes high-speed production by using sulfamic acid nickel plating solution. The binding of the nickel-plated diamond and a nickel plating layer is identical nickel-material binding, and belongs to identical nickel-metal atomic force binding, so that the diamond has high firmness, long service life and high sawing capability.

A flame retardant aqueous liquid composition containing water, guanidine sulfamate, a citric acid compound including a metal salt of citric acid, and a water soluble polymer. A flame retardant polyurethane foam is produced by a process including the steps of providing a mixture of the above flame retardant aqueous liquid composition with a polyol and an isocyanate, and reacting the mixture in the presence of a catalyst.

This invention relates to a method for preparing allyloxy polyether scale inhibitor, which is a stable, phosphorus-free, biodegradable and environmentally friendly scale inhibitor. The scale inhibitor is a mixture of free radical copolymerization product of allyloxy polyether monomer and vinyl-containing monomer 80-90 wt.%, and graft-copolymerization product of allyloxy polyether monomer and maleic anhydride-acrylic acid copolymer 10-20 wt.%. The method comprises: (1) reacting allyloxy polyethoxy ether, amino sulfonic acid and urea under nitrogen protection to obtain allyloxy polyethoxy ammonia sulfonate; (2) mixing with maleic anhydride-acrylic acid copolymer, and adding water to obtain an aqueous solution; (3) adding initiator solution and maleic anhydride solution at a uniform speed; (4) reacting for 0.5-5 h to obtain the product.

This invention relates to a method for preparing high-performance aminosulfonic acid-series water reducer with polyether-grafted comb-like molecular structure for cement. The high-performance aminosulfonic acid-series water reducer is prepared from: p-aminobenzenesulfonic acid 100 parts, NaOH 115-140 parts, phenol 10-100 parts, modified polyether 0-90 parts, formaldehyde 300-600 parts, and water 3000-10000 parts. The method comprises: dissolving p-aminobenzenesulfonic acid, NaOH, phenol and modified polyether in water at 5-50 deg.C, heating to 50-120 deg.C, dropping formaldehyde, and keeping the temperature for 1-9 h. The high-performance aminosulfonic acid-series water reducer can effectively inhibit the collapse loss of concrete. The high-performance aminosulfonic acid-series water reducer has high workability, and water cannot infiltrate into concrete containing it.