39 results about "EDDS" patented technology

A method of inhibiting copper deposition on hair and facilitating the removal of copper deposited on hair including applying to the hair a shampoo composition having ethylenediamine-N,N′-disuccinic acid (EDDS) and / or histidine, rinsing the shampoo composition from the hair, applying to the hair a conditioner composition comprising histidine, rinsing the conditioner composition from the hair, and applying to the hair a leave-on treatment comprising ethylenediamine-N,N′-disuccinic acid (EDDS).

A method for controlling colloidal / amorphous silica scale deposition in an aqueous system is described, which comprises adding to the aqueous system an effective amount of a synergistic combination comprising: A) 10% to 90% by weight of at least one carboxylate polymer comprising units derived from one or more carboxylate monomers; and B) 90% to 10% by weight of at least one chelating agent, based on the total weight of said synergistic combination. The carboxylate polymer may be a homopolymer of (meth)acrylic acid, maleic acid, itaconic acid, or their salts, or a copolymer of one or more monomers selected from meth)acrylic acid, maleic acid, itaconic acid, and their salts and, optionally, one or more sulfonic-free ethylenically unsaturated monomers. The chelating agent may be one or more of: methylamine, ethanolamine methylethanolamine (MEA), ethylenediamine (EDA), diethylenetriamine (DETA), ethylenediamine tetraacetic acid (EDTA), ethylenediamine disuccinic acid (EDDS), iminodiaacetic acid (IDA), tetrasodium ethylene diaminetetraacetic acid, and derivatives thereof, among others.

The invention relates to an environment-friendly three-element catalytic detergent. The detergent is at least prepared from the following components by weight percent: 0.5 to 0.8 percent of hydrochloric acid, 10 to 20 percent of EDDS, 6 to 15 percent of cleaning agent, 5 to 10 percent of scale and corrosion inhibitor, 5 percent of co-solvent and deionized water, wherein the sum of the weight percent of the hydrochloric acid, the EDDS, the cleaning agent, the scale and corrosion inhibitor, the co-solvent and the deionized water is 100 percent. The three-element catalytic detergent disclosed by the invention can primarily clean an engine which is completely blocked and cannot be started at normal temperature to remove the sulfur and phosphorus complex and accumulated carbon deposit, so that the engine can be started, then the engine is started to be secondarily cleaned at an idle speed at high temperature so as to regenerate a precious metal catalyst, and an effect for thoroughly and effectively cleaning a three-element catalytic converter is achieved; and moreover, components used in the three-element catalytic detergent are good in biodegradability, and the three-element catalytic detergent is an environment-friendly three-element catalytic detergent.

The present invention provides an aqueous opaque coating formulation comprising (A) and aqueous solvent; (B) an inorganic material; and (C) a chelating polymer which comprises units derived from one or more aminocarboxylate compounds or their salts, one or more other polymerizable monomers, one or more ethylenically unsaturated monomers and, optionally, one or more crosslinking monomers. For example, the aminocarboxylate compounds or their salts may be one or more of iminodiacetic acid (IDA), iminodisuccinic acid (IDS), ethylenediamine triacetic acid (ED3A) and ethylenediamine disuccinic acid (EDDS), or their salts. Suitable polymerizable monomers may be one or more of glycidyl methacrylate (GMA), allyl glycidyl ether (AGE), vinylbenzyl chloride (VBC), allyl bromide, and their derivatives. The inorganic material may be a pigment, such as titanium dioxide (Ti02) or cadmium sulfide (CdS), or an extender or filler, such as talc (Mg3Si4Oio(OH)2), calcium carbonate (CaC03) or mica, or even combinations thereof.

The present invention relates to hair care compositions comprising an oxidizing agent and chelants having ratio calculated at pH 10 of at least 3.20 wherein log KCuL is the common logarithm of the Conditional Stability Constant of said chelant with Cu<2+> and log KCaL is the common logarithm of the Conditional Stability Constant of said chelant with Ca<2+>. Suitable chelants are diamine-N,N'-dipolyacids or monoamine monoamide-N,N'-dipolyacids. The compositions according to the present invention contribute to reducing the oxidative damage sustained by a keratinous fiber such as hair during bleaching, dyeing, perming or other oxidative treatments. Especially preferred diamine dipolyacid is ethylenediamine-N,N'-disuccinic acid (EDDS).

A phosphate-free automatic dishwashing agent is described comprising from 0.05 to 20 wt. % amphoteric polymer and from 2 to 40 wt. % ethylene diamine disuccinic acid. The novel combination of amphoteric polymer with ethylene diamine disuccinic acid (EDDS) results in excellent performance compared to traditional phosphate-free automatic dishwashing agents, especially with regard to good cleaning, clear rinsing, and the overall inhibition of deposits.

The present invention provides a floor coating composition comprising (A) and aqueous solvent; and (B) a chelating polymer which comprises units derived from one or more aminocarboxylate compounds or their salts, one or more other polymerizable monomers, one or more ethylenically unsaturated monomers and, optionally, one or more crosslinking monomers. For example, the aminocarboxylate compounds or their salts may be one or more of iminodiacetic acid (IDA), iminodisuccinic acid (IDS), ethylenediamine triacetic acid (ED3A) and ethylenediamine disuccinic acid (EDDS), or their salts. Suitable polymerizable monomers may be one or more of glycidyl methacrylate (GMA), allyl glycidyl ether (AGE), vinylbenzyl chloride (VBC), allyl bromide, and their derivatives.

A system for managing vehicle information displayed on a plurality of vehicles, said system including a central computer system and plurality of electronic display devices (EDD), each being associated with one of said vehicles and each being in electronic communication with the central computer system (CCS). The CCS includes one or more computer processors; computer readable data storage; and a CCS computer program stored on said data storage, the CCS program being executable by the processors to perform the steps of selecting a vehicle from said plurality of vehicles; generating vehicle data representing information about said vehicle; and sending said vehicle data to an associated one of said EDDs. Each one of said EDDs includes one or more computer processors; computer readable data storage; an EDD computer program stored on said data storage; and a visual display unit, the EDD program being executable by the processors to perform the steps of receiving vehicle data from the CCS representing information about an associated vehicle; and displaying said vehicle data representing information about the associated vehicle on the visual display unit.

The invention discloses an oral care composition, which is composed of a chelating agent and an antibacterial agent. The chelating agent does not contain phosphorus, the 28-day biodegradation rate isgreater than 60%, and the calcium ion binding rate (pH is 5.5-10, 25 DEG C) is greater than 700mg / g; the iron ion binding rate (pH is 5.5-10, 100 DEG C) is greater than 700mg / g; wherein the chelatingagent is selected from one or more of citrate, L-GLDA, MGDA, IDS and EDDS, and preferably L-GLDA. The antibacterial agent does not contain chlorine and benzene, the 28-day biodegradation rate is larger than 90%, the minimum antibacterial concentration is achieved, and candida albicans (smaller than 50 ppm), streptococcus mutans (smaller than 50 ppm), porphyromonas gingivalis (smaller than 30 ppm)and fusobacterium nucleatum (smaller than 100 ppm) are included; wherein the antibacterial agent is selected from one or more of 1, 2-pentanediol, 1, 2-hexanediol, 1, 2-octanediol and 1, 2-decanediol,and preferably, the antibacterial agent is compounded according to a certain proportion. The chelating agent and the antibacterial agent are environmentally friendly and are compounded according to acertain proportion, the minimum inhibitory concentration of the antibacterial agent can be reduced, and meanwhile the effect of removing exogenous stains is achieved.

The invention relates to a preparation method and application of EDDS lyase immobilized enzymes, and belongs to the technical field of biology. In order to solve existing problems of being poor in purity and low in conversion rate, the invention provides a preparation method of the EDDS lyase immobilized enzymes. The method comprises the steps of performing fermentation and coarse extraction on EDDS lyase genetic engineering bacteria having His-tag to obtain EDDS lyase coarse enzyme liquid; enabling the coarse enzyme liquid to be in contact with a metal compatible carrier, enabling EDDS lyaseto be adsorbed onto the metal compatible carrier, and performing purification; eluting the EDDS lyase on the metal compatible carrier to obtain purified enzyme liquid; and immobilizing the enzyme liquid and the immobilized carrier to obtain EDDS lyase immobilized enzymes having His-tag for synthetizing (S,S)-EDDS by using fumaric acid and ethylenediamine as substrates. According to the preparationmethod disclosed by the invention, fumarase in the enzyme liquid can be effectively removed, the efficient purification effect can be achieved, and the preparation method has efficient enzyme activity capacity and high reutilization rate.

A process for making nanoparticles of biocompatible materials is described, wherein an aqueous reaction mixture comprising cerous ion, ethylenediaminedisuccinic acid, an oxidant, water, and optionally citric acid, is provided along with temperature conditions to directly form within the reaction mixture, a stable dispersion of cerium oxide nanoparticles. Biocompatible, nanoparticles comprised of cerium oxide, ethylenediaminedisuccinic acid, and optionally citric acid, are described. An increase in catalase-like enzyme activity is demonstrated by cerium oxide nanoparticles prepared with citric acid and ethylenediaminedisuccinic acid.

A process for making nanoparticles of biocompatible materials, wherein an aqueous reaction mixture comprising cerous ion, ethylenediaminedisuccinic acid, an oxidant, water, and optionally citric acid, is provided along with temperature conditions to directly form within the reaction mixture, a stable dispersion of cerium oxide nanoparticles. Also, biocompatibe nanoparticles comprised of cerium oxide, ethyenediaminedisuccinic acid, and optionally citric acid. An increase in catalase-like enzyme activity is demonstrated by cerium oxide nanoparticles prepared with citric acid and ethylenediaminedisuccinic acid.

The invention relates to a method for determining the dosage of a phytoremediation chelating agent by utilizing a constraint optimization principle. The constraint condition is that the application dose of chelating agent has no inhibition effect on the plant growth or the landscape effect of plant restoration, and the amount of the plant enrichment 238U, 232Th and 226Ra is taken as an objective function and the objective function maximization is taken as an optimization objective. Using potted plant experiment, using macleaya cordata as repair plant, using the biodegradable chelating agent CAand EDDS to enhance the enrichment of 238U, 232Th and 226Ra of macleaya cordata.The dosage range of CA and EDDS is determined according to the constraint condition that the dose of CA and EDDS had noinhibitory effect on the growth of macleaya cordata. The method not only meets the landscape effect of plant restoration and the normal growth of plants, but also improves the efficiency of plant restoration, and is suitable for the restoration of soil polluted by radionuclides or heavy metals.