105 results about "Iminodisuccinic acid" patented technology

Treatment fluids containing biodegradable chelating agents and methods for use thereof are described. The methods can comprise providing a treatment fluid that comprises an aqueous base fluid and a chelating agent composition, and introducing the treatment fluid into at least a portion of a subterranean formation. The treatment fluids can also be used for treatment of pipes or tubing such as, for example, well bore pipes or tubing penetrating a subterranean formation and above-ground pipelines. Illustrative biodegradable chelating agents include, but are not limited to, glutamic acid diacetic acid, methylglycine diacetic acid, β-alanine diacetic acid, S,S-ethylenediaminedisuccinic acid, iminodisuccinic acid, hydroxyiminodisuccinic acid, any salt thereof, any derivative thereof, and any combination thereof. The treatment fluids can optionally comprise an acid, which can include hydrofluoric acid or a hydrofluoric acid generating compound.

Methods of retarding the setting of a cement composition comprise including one or more secondary amines substituted with a carboxyl group or salts thereof (e.g., 3-hydroxy N,N′-iminodisuccinic acid) in the cement composition. The inclusion of such materials in cement compositions may be highly beneficial. In wellbores having BHCT's of less than or equal to about 250° F., the use of the secondary amine as the set retarder ensures that the thickening time of the cement composition is sufficient to allow the cement composition to be pumped to its desired downhole location. Further, the secondary amine may be used in combination with conventional set retarders to enhance the ability of those retarders to increase the thickening time of the cement composition at higher BHCT's, e.g., from about 250° F. to about 525° F.

Cement compositions may comprise one or more secondary amines substituted with a carboxyl group or salts thereof (e.g., 3-hydroxy N,N′-iminodisuccinic acid) for retarding the setting of such compositions. The inclusion of such materials in cement compositions may be highly beneficial. In wellbores having BHCT's of less than or equal to about 250° F., the use of the secondary amine as the set retarder ensures that the thickening time of the cement composition is sufficient to allow the cement composition to be pumped to its desired downhole location. Further, the secondary amine may be used in combination with conventional set retarders to enhance the ability of those retarders to increase the thickening time of the cement composition at higher BHCT's, e.g., from about 250° F. to about 525° F.

The invention relates to a microetching and roughening liquid for a copper surface. The microetching and roughening liquid comprises the following components by mass concentration: 5-50 g/L bivalent copper ions from a copper ion source, 20-150 g/L organic acid, 3-105 g/L chloride ions from a chloride ion source, a 0.0005-2 g/L water-soluble polymer and a 0.001-10 g/L pyridine derivative; a solventis water; the organic acid is at least one of formic acid, acetic acid, malic acid, citric acid, tartaric acid, edetic acid, iminodisuccinic acid, monochloro acetic acid, dichloroacetic acid and trichloroacetic acid; and the water-soluble polymer is a polymer of which a molecular chain contains a Imidazole or ammonium salt structure. The microetching and roughening liquid can form uniform roughening on the copper surface, is not affected by the crystal structure of the copper surface, and in the follow-up processes, can effectively increase the adhesive force of a solder-resist coating with which the copper surface is coated.

The invention relates to a layered double hydroxide composite material and a preparation method and application thereof. The layered double hydroxide composite material is obtained by introducing biodegradable iminodisuccinic acid anions with excellent chelating performance into layered double hydroxide nanocrystals and performing functionalizing. The obtained layered double hydroxide composite material has the advantages of high specific surface area, porosity and the like, also has strong chelating ability to metal cations, especially heavy metal cations, is safe, environment-friendly, efficient and good in cycle performance, and can be applied to adsorption and treatment of heavy metal pollution of water bodies and soil.

The invention discloses an acidic disinfectant and a preparation method thereof; the acidic disinfectant comprises the following major components in parts by weight: 18 parts of water, 10 parts of 90 wt% acetic acid, 72 parts of 35 wt% hydrogen peroxide, 2-3 parts of 90 wt% sulfuric acid, 1-10 parts of nonionic surfactant, 1-10 parts of stabilizer, 10-20 parts of C8-C16 alkylaryl sulfonic acid, 1-10 parts of iminodisuccinic acid, 1-5 parts of sodium sulfate or carboxymethylcellulose, 1-10 parts of glucose pentaacetate and 1-8 parts of cocoyl hydroxyethyl imidazoline, wherein the nonionic surfactant is an ethylene oxide/epoxypropane segmented copolymer started/ended from C6-C12 aliphatic alcohol; and the stabilizer is a polyhydroxy, polycarboxylic and multi-ligand compound which is generated by a condensation reaction of ethylenediamine tetraacetic acid and phosphoric acid with molar ratio of 1:1.

The invention discloses a separation medium with iminodisuccinic acid (IDS) as ligand and a preparation method and application of the separation medium. As the ligand, the IDS is bonded to a chromatographic filler through a spacer arm, so as to prepare a novel chromatographic medium with ion exchange chromatography, high-strength metal-chelating chromatographic properties and a dual separation function. When metal ions are not immobilized, the ion exchange properties of the separation medium can be rivaled with a conventional IDA medium; when the metal ions are immobilized, the metal-chelating chromatographic properties of the separation medium are far superior to those of a commercial IDA column, and are comparable to those of an EDTA column, and defects of a conventional common metal-chelating immobilized phase filler with IDA as the ligand are overcome. Meanwhile, a good basis is made for solving the problem of metal ion loss on an IMAC column in later periods. The separation medium has great values for expanding the application range and the application prospects of the IMAC column, and increasing the market benefits of the IMAC filler.

The invention discloses an oxidation cleaning disinfector which comprises the following raw materials in parts by weight: 1-3 parts of peracetic acid, 8-24 parts of hydrogen peroxide, 7-21 parts of acetic acid, 2-8 parts of iminodisuccinic acid, 1-3 parts of sodium dodecyl diphenyl ether disulfonate and 60-90 parts of deionized water. The oxidation cleaning disinfector is easily soluble in water,low in foaming, convenient to use, quick and thorough in sterilization, high in cleaning efficiency and good in disinfection effect; no residual toxicity is available on a disinfected article; a decomposition product is innocuous to a human body; and the disinfector has high cost performance, is convenient to popularize and apply and can achieve good economic benefits.

The invention relates to a method for measuring the content of a magnesium element in an aluminum alloy. A compound masking reagent adopts a triethanolamine solution of iminodisuccinic acid, dimercaprol and tetrasodium glutamate diacetate, and triethanolamine reacts with Al<3+> and Fe<3+> to obtain a stable complex under an acidic environment, the formed complex is colorless and easily soluble, the iminodisuccinic acid and Cu<2+>, Ca<2+> and Zn<2+> form a stable complex; tetrasodium glutamate diacetate is strong in complexing power with rare earth element ions; dimercaprol is strong in complexing power with nickel and manganese ions, and is poor in complexing power with other ions. Thus, the compound masking reagent formed by multiple components is used for performing complexing masking on each element except for the manganese ions in the aluminum alloy in a targeted manner, and thus the detection accuracy is improved. The method for measuring the content of the magnesium element in the aluminum alloy, provided by the invention, is accurate in measuring result, and remarkable in end point, and has the environmental-friendly effects in the used reagent without pollution.

The invention discloses a lodging-resistant, disease-resistant and growth-promoting leaf fertilizer for corn. The leaf fertilizer comprises components as follows: 160-240 g/L of iminodisuccinic acid, 200-300 g/L of potassium silicate, 60-100 g/L of calcium nitrate, 20-60 g/L of zinc sulfate heptahydrate, 10-30 g/L of boric acid, 20-50 g/L of agricultural streptomycin and 20-30 g/L of glycerol. Potassium, calcium, zinc, silicone and other elements are particularly added to the leaf fertilizer, the leaf fertilizer has high permeability for leaves of the corn, the leaves of the corn are wetted for a long time, few liquid fertilizers are lost, the utilization rate of nutrient elements is high, meanwhile, the leaf fertilizer has a sterilization function and can effectively prevent bacterial wilt, downy mildew, small and large leaf spot diseases, rust diseases and the like from infecting the corn.

The invention relates to a process for the preparation of iminodisuccinic acid ammonium metal salts, characterized in that, in a first stage, maleic anhydride (MA), alkali metal hydroxide and water are mixed in the molar ratio of 2:0–3:5–30 and then ammonia is metered in in the ratio MA: ammonia 2:1.5–8, in order to obtain iminodisuccinic acid ammonium salts which, in a second stage, are reacted with metal oxides, metal hydroxides (and) or other metal salts or their mixtures to give iminodisuccinic acid ammonium metal salts of the formula 8,

IDA(NH₄)_x(Na)_y(K)_z(Me)_m.(NH₃)_nFormula 8

in which

• • IDA represents iminodisuccinic acid moiety,
  • x=0.1–3.9
  • y=0–3
  • z=0–3
  • m=0.1–2
  • n=0–6

and

Me represents metals of the IInd, IIIrd and IVth main groups and of the Ist to VIIIth subgroups as well as metals of the lanthanide series, of the Periodic Table, which can occur in the oxidation states 1, 2, 3 or 4, the compounds themselves and their intermediates and the use.

An effective, readily ingested molluscicidal bait poison includes a mollusc bait and a second component. The second component can contain a transition metal compound and a complexing agent, and/or the complex of a transition metal compound and a complexing agent. The complexing agent is preferably iminodisuccinic acid (IDS), including sodium IDS (IDS Na-Salt), iminodifumaric acid (IDF), iminoditartaric acid (IDT), iminodimaleic acid (IDMAL), ethylenediaminedifumaric acid (EDDF), ethylenediaminedimalic acid (EDDM), iminodimalic acid (IDM), ethylenediamineditartaric acid (EDDT), ethylenediaminedimaleic acid (EDDMAL), and salts thereof.

The invention discloses an antibacterial mild fast dissolving laundry sheet and a preparation technology thereof. The antibacterial mild fast dissolving laundry sheet comprises the following components in parts by mass: 40-50 parts of soap powder, 12-24 parts of a surfactant, 6-10 parts of a disintegration dispersing agent, 20-30 parts of sodium citrate, 0.4-0.6 part of complex enzyme, 0.6-0.8 part of iminodisuccinic acid, 40-60 parts of sodium gluconate, 4-8 parts of bamboo vinegar, 20-30 parts of a detergent builder and 0.4-0.8 part of essence. The antibacterial mild fast dissolving laundry sheet disclosed by the invention has the beneficial effects that natural plant extracts are utilized for replacing partial chemical reagents with irritating effect, so that the laundry sheet is milder and can be rapidly dissolved.

The invention provides a detergent for yellow spots on the outer surface of a railway vehicle and a preparation method and application of the detergent. The detergent for the yellow spots on the outersurface of the railway vehicle consists of the following components in percentage by mass: 12-18.5% of a compounded surfactant, 15-20% of a chelating agent, 8-14% of a solubilizer, 5-8% of a builderand the balance of water, wherein the compounded surfactant consists of an anionic surfactant and a nonionic surfactant in a mass ratio of 1:(2-4); the chelating agent is selected from one or two of ethylenediamine tetraacetic acid tetrasodium salt and sodium iminodisuccinate in any ratio; the solubilizer is one or two of N,N-dimethyldecanamide and sodium isopropyl benzoate in any ratio; and the builder is selected from one or two of ethanol amine and potassium carbonate in any ratio. The detergent provided by the invention is good in dirt removing power, and particularly has a good removing capability for yellow spots on railway vehicles.

The invention relates to the technical field of metal surface treatment, and discloses a stainless steel surface hydrophilic treatment method. The stainless steel surface hydrophilic treatment methodcomprises the following steps that (1) an agent A is evenly coated on the surface of a steel plate, and a standing reaction is made for 10-30 minutes; (2) an agent B is evenly coated on the surface ofthe stainless steel, and a standing reaction is made for 10-30 minutes; and (3) the surface of the stainless steel is rinsed with water, and the water is dried. The agent A includes one or more of phytic acid, ethylene diamine tetraacetic acid, hydroxyethyl ethylenediamine triacetic acid, dihydroxyethyl glycine, diethylenetriamine pentaacetic acid, nitrilotriacetic acid, iminodisuccinic acid andhydroxy ethyl diphosphonic acid; and the agent B is a ferric ion solution. The stainless steel surface hydrophilic treatment method can solve the problems that in the prior art, when the surface of the stainless steel is subjected to the hydrophilic treatment, the processing conditions are harsh, and large-area steel surface treatment is not facilitated.

The invention discloses a wastewater defluorination application of an iminodisuccinic acid (IDS) metal chelating type adsorbent. The IDS metal chelating type adsorbent is formed by coordination of iminodisuccinic acid and metal ions M<n+>, and is an adsorbent with high stability and high adsorption capacity. Due to super-strong coordination of the IDS to the M<n+>, the obtained IDS-M<n+> chelatingtype adsorbent can be applied to removal of fluorides in sewage, and the adsorbent exhibits remarkable advantages of high stability and easy reproducibility in processes of removing fluorides in industrial sewage or domestic water. When the adsorbent is used, operation is simple, greenness and environment protection are achieved, and a fluorine removal effect is remarkable. In addition, comparedwith a chelating type functional ligand iminodiacetic acid (IDA) which is commonly used for fluorine removal, the adsorbent has a better effect. The IDS metal chelating type adsorbent has very important application values and significance in the aspect of removing fluorides in a water phase system.

The invention discloses cleanout fluid applicable to cleaning of clinical laboratory instruments. The cleanout fluid is composed of, by mass, 81-90% of water, 2-4% of a surface active agent, 2-5% of an inorganic auxiliary agent, 1-2% of a solubilizing agent, 1-2% of lubrication rust inhibitor, 0.5-1% of a sterilizing agent and 2-5% of a green chelating agent. The preparation method of the cleanout fluid includes the steps that firstly, pure water is added into a container, then the surface active agent, the inorganic auxiliary agent, the solubilizing agent, the lubrication rust inhibitor, the sterilizing agent and the green chelating agent are sequentially added, the mixture is mixed and stirred to be uniform, and the cleanout fluid is obtained. According to the cleanout fluid, due to the fact that the added iminodisuccinic acid is a brand-new green chelating agent, the cleanout fluid has biodegradability and is safe and environmentally friendly; due to the fact that a compounded mixed surfactant system of the surface active agent sodium dodecyl benzene sulfonate, the inorganic auxiliary agent and the solubilizing agent is added, the cleanout fluid has good oil stain removal capacity and is low in foam output and easy to clean; due to the fact that rust prevention brightener methyl silicone oil is added, the cleanout fluid achieves rust prevention, maintenance and brightening effects on the instruments.

The invention discloses a combined inhibitor for flotation separation of lead-zinc sulfide ore and application. The combined inhibitor comprises zinc sulfate and iminodisuccinic acid. The combined inhibitor is used as a sphalerite inhibitor for flotation separation of galena and sphalerite. The method comprises the steps of conducting ore grinding and pulp mixing on raw ore, obtaining ore pulp to be floated, sequentially adding a combined inhibitor, quick lime, a collecting agent and a foaming agent into the ore pulp for lead flotation operation, obtaining lead concentrate and lead flotation tailings, sequentially adding an activating agent, the collecting agent and the foaming agent into the lead flotation tailings for zinc flotation operation, and obtaining zinc concentrate and tailings. The combined inhibitor has a strong inhibition effect on sphalerite, flotation separation of galena and sphalerite is effectively achieved, the combined inhibitor can be naturally degraded and is environmentally friendly, and the dosage of zinc sulfate can be reduced by adding iminodisuccinic acid, so that the mineral separation cost is reduced.

The invention discloses an antibacterial antistatic sheet-like detergent, which comprises, by mass, 40-44 parts of soap powder, 12-18 parts of a surfactant, 6-10 parts of a disintegrating dispersant, 20-26 parts of sodium citrate, 0.4-0.6 part of compound enzyme, 0.6-0.8 part of iminodisuccinic acid, 40-46 parts of sodium gluconate, 4-8 parts of bamboo vinegar powder, 20-24 parts of a washing aid, 12-16 parts of sodium dodecanol sulfate, 4-6 parts of bone powder, 6-10 parts of a film forming agent, 10-14 parts of cocamidopropyl betaine, and 0.4-0.8 part of essence. According to the present invention, the part of the chemical preparations having stimulating effects are replaced with the natural plant extracts, and the good antibacterial performance is provided.

The invention relates to the field of agriculture, and in particular relates to a chelated fertilizer and a preparation method thereof. The chelated fertilizer provided by the invention comprises diethylene triamine pentamethylene phosphonic acid chelated mineral element and iminodisuccinic acid chelated mineral element which can be used for realizing the full chelation of free trace metal elements, and solves the problem of seedling burnt caused by too fast releasing the nutritional ingredients of the chelated fertilizer, and the two cooperate with each other, so that the releasing of trace elements can be stable and lasting, the supply of the nutrients is more balanced, and the aims of increasing the benefit and yield are realized.