35 results about "CALCIUM CATION" patented technology

The invention is a high-yield mannitol preparing method using glucose as raw material, on acidic condition, making the glucose through epimerization reaction to obtain the mixture mannitose-glucose, separate mannitose-glucose by simulated moving bed at 40-85 deg.C, using calcium cation exchange resin as sorbent and water as eluent to continuously obtain glucose-rich component and mannitose-rich component, where the former can repeatedly make epimerization reaction, the latter can generate manitol when added with hydrogen and the mannitol content in the mixed alcohol added with hydrogen is up to above 75%, then crystallizing, centrifuging and drying to obtain the mannitol product, where mannitol productivity is 70% of dry glucose charging capacity.

A composite coating and method for preparing the composite coating on titanium implants for tissue culture and tissue engineering is provided. The implants are characterized in that the titanium component to be coated is placed in a aqueous solution containing calcium cations, phosphate anions, and dispersed carbon nanoparticles (such as single layer graphene oxide or graphene oxide) in an amount of about 0.05%-1.50% by weight relative to the total weight of aqueous solution. The dimensions of the dispersed graphene oxide should be around, but not limited to, 300-800 nm (X-Y), while their thickness is about 0.7-1.2 nm. The aqueous solution with carbon nanoparticles is prepared by mixing for at least 72 h in temperature in range 20-35° C. and sonicated before electrodeposition process. In the prepared solution is further placed titanium which acts as cathode element (may be the implant), and anode which can be, for example, a platinum rod. Between the cathode and anode is set a potential from −1.3V to −1.7V which results in coating formation by electrodeposition. The titanium implant before the electrodeposition process is treated in sodium hydroxide of HF to improve coating formation and thickness.

There is provided a method of forming an aqueous composition, said method comprising

• (a) first, forming at least one aqueous polymer dispersion by a process comprising polymerizing a monomer mix comprising 5-50% by weight based on the weight of said monomer mix, of one or more carboxylic acid functional monomers;
• (b) second, adding to said aqueous polymer dispersion, ingredients comprising
  • (i) 1 to 10 parts by weight of at least one swelling agent, based on 100 parts by weight of said monomer mix; and
  • (ii) one or more nonionic surfactant, anionic surfactant, or mixture thereof; and
• (c) third, adding calcium cation or magnesium cation or a mixture thereof to said aqueous polymer dispersion.

Preparation of a masterbatch of diene elastomer and silica including preparing at least one silica dispersion in water; bringing into contact and mixing an elastomer latex and the aqueous silica dispersion in the presence of a calcium salt in order to obtain a coagulum; and recovering the coagulum and drying the recovered coagulum in order to obtain the masterbatch. The molar content of calcium cations, defined as the number of moles of calcium cations of the calcium salt per BET unit area of the silica, is between 1.19*10⁻⁶ and 2.81*10⁻⁶ mol/m².

A method of manufacturing nitrile rubber latex medical examination gloves during which (a) the glove formers are dipped into a coagulant solution containing divalent calcium cations and calcium carbonate particles, to which has been added chlorohexidene, photo-catalytic titanium dioxide, triclosan, benzalkonium chloride, silver salts and nanoparticles and poly(hexamethylene biguanide) (PHMB); and during which (b) the coated glove formers are then dipped into a nitrile rubber latex dispersion containing triclosan that is not in a paste form, in which sodium dodecyl benzene sulphonate and alkyl alcohol ethoxylate are used in order to disperse the triclosan; and during which (c) the nitrile rubber latex gloves are finally placed in to packaging utilizing a clear coat varnish that it is impregnated with a phenolic chlorine compound, micronised nanosilver colloid, and a quaternary compound.

The present invention provides a method of mineralisation of carbon dioxide. The method comprises forming an alkaline in aqueous solution containing carbonate anions by dissolving the carbon dioxide and an alkali such as ammonia in water. Next, the method comprises mixing the alkaline aqueous solution with a water source (such as a connate/formation brine or produced water or industrial waste waters or re-constituted mineral-bearing waters) containing magnesium and calcium cations. A first product (e.g. PCC) containing calcium cations and carbonate anions is precipitated in a first precipitation step at a first pH (e.g. around pH7.5) and then a second product (e.g. nesquehonite (NQ) a type of PMC) containing magnesium cations and carbonate anions is precipitated in a second precipitation step at a second, higher pH e.g. around pH 9.5.

A method of manufacturing nitrile rubber latex medical examination gloves during which (a) the glove formers are dipped into a coagulant solution containing divalent calcium cations and calcium nitrate particles, to which has been added a composition comprising Alcohol ethoxylate, Amine oxide, Ethylenediaminetetracetic acid, Glutaraldehyde, Chlorhexidine di-gluconate, Chlorhexidine di-hydrochloride, Salisept, Titanium Dioxide, nano particle silver; and during which (b) the coated glove formers are then dipped into a nitrile rubber latex dispersion to which has been added a composition comprising Alcohol ethoxylate, Amine oxide, Lactic acid, Ethylenedi-aminetetracetic acid, Glutaraldehyde, Salisept; and during which (c) the nitrile rubber latex gloves are finally placed in to packaging utilising a clear coat varnish that it is impregnated with a phenolic chlorine compound, micronised nanosilver colloid, and a quaternary compound.

An additive composition comprises phosphate ester anions conforming to a specified structure, aromatic carboxylate anions, optionally cycloaliphatic dicarboxylate anions, aluminum (III) cations, sodium cations, optionally calcium cations, optionally lithium cations, and optionally zinc (II) cations. The anions are present in the additive composition in specified molar percentages. The cations are also present in the additive composition in specified molar percentages.

An opacified liquid detergent composition includes at least one anionic surfactant, a fatty acid, calcium cations, and water. The fatty acid and calcium cations are present in the opacified liquid detergent composition in a weight ratio of the fatty acid to the calcium cations of from about 1:25 to about 1:150. The opacified liquid detergent composition is free of a microplastic opacifier and has a turbidity value of greater than 250 NTU measured utilizing a turbidity meter at about 24° C.

The invention belongs to the technical field of chemical analysis, and particularly relates to a method for detecting the content of trace metal ions in high-purity thiourea through ion chromatography. Sodium, ammonium, potassium, magnesium and calcium cations are detected by adopting an ion chromatography method; a standard working solution is prepared by utilizing five cation standard samples; and according to the response of the metal ions in the cation system, a standard curve is established by using the response peak area of the metal ion standard sample as a vertical coordinate and the ion content as a horizontal coordinate; and the response peak area of the corresponding ions in the sample is substituted into the standard curve to calculate the metal ion content in the sample. The method is simple to operate, rapid in detection, free of complex pretreatment, non-toxic and harmless in detection process, high in accuracy and good in reproducibility.

The present invention relates to a denture adhesive composition comprising mixed salts of an alkyl vinyl ether-maleic acid or anhydride copolymer and/or terpolymer with isobutylene wherein the mixed salt contains a cationic salt function comprising at least about 22.5 % calcium cations, from about 15 % to about 25 % of zinc cations, of the total initial carboxyl groups reacted, the mixed salt containing from about 36 % to about 50 % free acid component. In addition the present invention relates to denture adhesive compositions comprising the above composition and at least one non-adhesive self-supporting layer. The present invention further relates to a method of increasing the adhesion of dentures to the oral cavity by applying the above compositions to dentures, directly to the oral cavity, palate or ridge of the oral cavity, or applying it to both, and thereafter securing the denture to the ridge or palate of the oral cavity.